UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of March 2015

Commission File Number: 000-53445

KB Financial Group Inc.

(Translation of registrant’s name into English)

9-1, 2-ga, Namdaemoon-ro, Jung-gu, Seoul 100-703, Korea

(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F  x            Form 40-F  ¨

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):  ¨

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7):  ¨

Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.

Yes  ¨            No   x

If “Yes” is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): 82- N/A .

Audit Report of KB Financial Group Inc. for Fiscal Year 2014

On March 12, 2015, KB Financial Group Inc. (“KB Financial Group”) disclosed audit reports for fiscal year 2014 based on the International Financial Reporting Standards as adopted by the Republic of Korea (including the consolidated and separate financial statements of KB Financial Group as of and for the years ended December 31, 2014 and 2013 and related notes) received from Samil PricewaterhouseCoopers, its independent auditor. The financial statements in such reports have not been approved by the shareholders of KB Financial Group and remain subject to change.

KB Financial Group is furnishing the following documents as exhibits to this Form 6-K filing:

Exhibit 99.1: An English-language translation of the Consolidated Audit Report of KB Financial Group for FY 2014.

Exhibit 99.2: An English-language translation of the Separate Audit Report of KB Financial Group for FY 2014.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Exhibit 99.1

KB Financial Group Inc. and

Subsidiaries

Consolidated Financial Statements

December 31, 2014 and 2013

KB Financial Group Inc. and Subsidiaries

Index

December 31, 2014 and 2013

Independent Auditor’s Report

(English Translation of a Report Originally Issued in Korean)

To the Shareholders and Board of Directors of

KB Financial Group Inc.

We have audited the accompanying consolidated financial statements of KB Financial Group Inc. and its subsidiaries (collectively the “Group”), which comprise the consolidated statements of financial position as of December 31, 2014 and 2013, and January 1, 2013, and the related consolidated statements of comprehensive income, changes in equity and cash flows for the years ended December 31, 2014 and 2013, and notes, comprising a summary of significant accounting policies and other explanatory information.

Management’s responsibility for the financial statements

Management is responsible for the preparation and fair presentation of these financial statements in accordance with the International Financial Reporting Standards as adopted by the Republic of Korea (“K-IFRS”) and for such internal control as management determines is necessary to enable the preparation of financial statements that are free from material misstatement, whether due to fraud or error.

Auditor’s responsibility

Our responsibility is to express an opinion on these financial statements based on our audits. We conducted our audits in accordance with the Korean Standards on Auditing. Those standards require that we comply with ethical requirements and plan and perform the audit to obtain reasonable assurance about whether the financial statements are free from material misstatement.

An audit involves performing procedures to obtain audit evidence about the amounts and disclosures in the financial statements. The procedures selected depend on the auditor’s judgment, including the assessment of the risks of material misstatement of the financial statements, whether due to fraud or error. In making those risk assessments, the auditor considers internal control relevant to the entity’s preparation and fair presentation of the financial statements in order to design audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the entity’s internal control. An audit also includes evaluating the appropriateness of accounting policies used and the reasonableness of accounting estimates made by management, as well as evaluating the overall presentation of the financial statements.

We believe that the audit evidence we have obtained is sufficient and appropriate to provide a basis for our audit opinion.

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Opinion

In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of KB Financial Group Inc. and its subsidiaries as of December 31, 2014 and 2013, and January 1, 2013, and their financial performance and cash flows for the years ended December 31, 2014 and 2013, in accordance with the K-IFRS.

Other Matter

The financial position of the Group as of January 1, 2013, and the financial statements of the Group as of and for the year ended December 31, 2013, were audited in accordance with the previous Korean Standards on Auditing.

Auditing standards and their application in practice vary among countries. The procedures and practices used in the Republic of Korea to audit such financial statements may differ from those generally accepted and applied in other countries.

Seoul, Korea

March 12, 2015

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KB Financial Group Inc. and Subsidiaries

Consolidated Statements of Financial Position

December 31, 2014 and 2013, and January 1, 2013

The accompanying notes are an integral part of these consolidated financial statements.

3

KB Financial Group Inc. and Subsidiaries

Consolidated Statements of Comprehensive Income

Years Ended December 31, 2014 and 2013

The accompanying notes are an integral part of these consolidated financial statements.

4

KB Financial Group Inc. and Subsidiaries

Consolidated Statements of Changes in Equity

Years Ended December 31, 2014 and 2013

The accompanying notes are an integral part of these consolidated financial statements.

5

KB Financial Group Inc. and Subsidiaries

Consolidated Statements of Cash Flows

Years Ended December 31, 2014 and 2013

The accompanying notes are an integral part of these consolidated financial statements.

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KB Financial Group Inc. and Subsidiaries

Notes to Consolidated Financial Statements

December 31, 2014 and 2013

1. The Parent Company

KB Financial Group Inc. (the “Parent Company”) was incorporated on September 29, 2008, under the Financial Holding Companies Act of Korea. KB Financial Group Inc. and its subsidiaries (the “Group”) derive substantially all of their revenue and income from providing a broad range of banking and related financial services to consumers and corporations primarily in Korea and in selected international markets. The Parent Company’s principal business includes ownership and management of subsidiaries and associated companies that are engaged in financial services or activities. In 2011, Kookmin Bank spun off its credit card business segment and established a new separate credit card company, KB Kookmin Card Co., Ltd., and KB Investment & Securities Co., Ltd. merged with KB Futures Co., Ltd. The Group established KB Savings Bank Co., Ltd. in January 2012, acquired Yehansoul Savings Bank Co., Ltd. in September 2013 and KB Savings Bank Co., Ltd. merged with Yehansoul Savings Bank Co., Ltd. in January 2014. In addition, the Group acquired Woori Financial Co., Ltd. and changed the name to KB Capital Co., Ltd. in March 2014.

The Parent Company’s share capital as of December 31, 2014, is ￦1,931,758 million. The Parent Company is authorized to issue up to 1 billion shares. The Parent Company has been listed on the Korea Exchange (“KRX”) since October 10, 2008, and on the New York Stock Exchange (“NYSE”) for its American Depositary Shares (“ADS”) since September 29, 2008. Number of shares authorized on its Articles of Incorporation is 1,000 million.

2. Basis of Preparation

2.1 Application of K-IFRS

The Group maintains its accounting records in Korean won and prepares statutory financial statements in the Korean language (Hangul) in accordance with the International Financial Reporting Standards as adopted by the Republic of Korea (K-IFRS). The accompanying consolidated financial statements have been condensed, restructured and translated into English from the Korean language financial statements.

Certain information attached to the Korean language financial statements, but not required for a fair presentation of the Group’s financial position, financial performance or cash flows, is not presented in the accompanying consolidated financial statements.

The consolidated financial statements of the Parent company and its subsidiaries (“The Group”) have been prepared in accordance with Korean-IFRS(K-IFRS). K-IFRS are the standards and related interpretations issued by the International Accounting Standards Board (“IASB”) that have been adopted by the Republic of Korea.

The preparation of consolidated financial statements requires the use of certain critical accounting estimates. It also requires management to exercise judgment in the process of applying the Group’s accounting policies. The areas involving a higher degree of judgment or complexity, or areas where assumptions and estimates are significant to the consolidated financial statements are disclosed in Note 2.4.

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KB Financial Group Inc. and Subsidiaries

Notes to Consolidated Financial Statements

December 31, 2014 and 2013

The Group has applied the following accounting policy for the financial year beginning on January 1, 2014

Amendment to K-IFRS 1032, Financial Instruments: Presentation

According to Amendment to K-IFRS 1032, Financial Instruments: Presentation, provides that the right to offset must not be contingent on a future event and must be legally enforceable in all of circumstances; and if an entity can settle amounts in a manner such that outcome is, in effect, equivalent to net settlement, the entity will meet the net settlement criterion. The application of this amendment does not have a material impact on the consolidated financial statements.

Amendment to K-IFRS 1036, Impairment of Assets

Amendment to K-IFRS 1036, Impairment of Assets, removed certain disclosures of the recoverable amount of cash-generating units which had been included in this amendment by the issuance of K-IFRS 1113. The application of this amendment does not have a material impact on the consolidated financial statements.

Amendment to K-IFRS 1039, Financial Instruments: Recognition and Measurement

Amendment to K-IFRS 1039, Financial Instruments: Recognition and Measurement, allows the continuation of hedge accounting for a derivative that has been designated as a hedging instrument in a circumstance in which that derivative is novated to a central counterparty (CCP) as a consequence of laws or regulations. The application of this amendment does not have a material impact on the consolidated financial statements.

- Amendment to Korean IFRS 1102, Share-based payment

K-IFRS 1102, Share-based payment, clarifies the definition of ‘vesting conditions’ such as ‘performance condition’, ‘service condition’ and others. This amendment is applied to share-based payment transactions for which the grant date is on or after July 1, 2014. The application of this amendment does not have a material impact on the consolidated financial statements.

Enactment of K-IFRS 2121, Levies

K-IFRS 2121, Levies, is applied to a liability to pay a levy imposed by a government in accordance with the legislation. The interpretation requires that the liability to pay a levy is recognized when the activity that triggers the payment of the levy occurs, as identified by the legislation (the obligating event). The interpretation does not have a significant impact on the consolidated financial statements.

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KB Financial Group Inc. and Subsidiaries

Notes to Consolidated Financial Statements

December 31, 2014 and 2013

The group has applied the following policy for the financial year beginning on January 1, 2014.

Changes in accounting policy with respect to uncertain tax position

For the periods prior to the year ended December 31, 2014, pursuant to Korean IFRS 1037 if a uncertain tax position satisfied the criteria for provisions, the Group measured the best estimate of expenditures for the uncertain tax position. The amount in relation to the claim of rectification and litigation over the levied amount from taxation authority was recognized as contingent assets. However, the Group retrospectively applied the accounting policy in accordance with the Korean IFRS 1012, which allows recognition of the tax payment in 2014 as income tax assets when it is probable to receive a tax refund. The restated comparative consolidated financial statements reflect adjustments resulting from the retrospective application.

The effect of these changes in accounting policy to financial position as of December 31, 2014 and 2013, and January 1, 2013, and to comprehensive income for the years ended December 31, 2014 and 2013, are as follows:

Effect on Consolidated Statements of Financial Position

Effect on Consolidated Statements of Comprehensive Income

The Group expects that new standards, amendments and interpretations issued but not effective for the annual period beginning on January 1, 2014, and not early adopted would not have a material impact on its consolidated financial statements.

2.2 Measurement Basis

The consolidated financial statements have been prepared under the historical cost convention unless otherwise specified.

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KB Financial Group Inc. and Subsidiaries

Notes to Consolidated Financial Statements

December 31, 2014 and 2013

2.3 Functional and Presentation Currency

Items included in the financial statements of each entity of the Group are measured using the currency of the primary economic environment in which the entity operates (“the functional currency”). The consolidated financial statements are presented in Korean won, which is the Parent Company’s functional and presentation currency. Refer to Notes 3.2.1 and 3.2.2.

2.4 Significant Estimates

The preparation of consolidated financial statements requires the application of accounting policies, certain critical accounting estimates and assumptions that may have a significant impact on the assets (liabilities) and income (expenses). Management’s estimates of outcomes may differ from actual outcomes if management’s estimates and assumptions based on management’s best judgment at the reporting date are different from the actual environment.

Estimates and assumptions are continually evaluated and any change in an accounting estimate is recognized prospectively by including it in profit or loss in the period of the change, if the change affects that period only. Alternatively if the change in accounting estimate affects both the period of change and future periods, that change is recognized in the profit or loss of all those periods.

Uncertainty in estimates and assumptions with significant risk that may result in material adjustment to the consolidated financial statements are as follows:

2.4.1 Deferred income taxes

The recognition of a deferred tax asset relies on an assessment of the probability and sufficiency of future taxable profits, future reversals of existing taxable temporary differences and ongoing tax planning strategies.

2.4.2 Fair value of financial instruments

The fair value of financial instruments where no active market exists or where quoted prices are not otherwise available is determined by using valuation techniques. Financial instruments, which are not actively traded in the market and those with less transparent market prices, will have less objective fair values and require broad judgment on liquidity, concentration, uncertainty in market factors and assumptions in price determination and other risks.

As described in the significant accounting policies in Note 3.3, ‘Recognition and Measurement of Financial Instruments’, diverse valuation techniques are used to determine the fair value of financial instruments, from generally accepted market valuation models to internally developed valuation models that incorporate various types of assumptions and variables.

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KB Financial Group Inc. and Subsidiaries

Notes to Consolidated Financial Statements

December 31, 2014 and 2013

2.4.3 Provisions for credit losses (allowances for loan losses, provisions for acceptances and guarantees, and unused loan commitments)

The Group determines and recognizes allowances for losses on loans through impairment testing and recognizes provisions for guarantees, and unused loan commitments. The accuracy of provisions for credit losses is determined by the methodology and assumptions used for estimating expected cash flows of the borrower for individually assessed allowances of loans, collectively assessed allowances for groups of loans, guarantees and unused loan commitments.

2.4.4 Measurements of net defined benefit liabilities

The present value of net defined benefit liability depends on a number of factors that are determined on an actuarial basis using a number of assumptions (Note 24).

2.4.5 Estimated impairment of goodwill

The Group tests annually whether goodwill has suffered any impairment. The recoverable amounts of cash-generating units have been determined based on value-in-use calculations (Note 15).

3. Significant Accounting Policies

The significant accounting policies applied in the preparation of these consolidated financial statements are set out below. These policies have been consistently applied to all years presented, unless otherwise stated.

3.1 Consolidation

3.1.1 Subsidiaries

Subsidiaries are companies that are controlled by the Group. The Group controls an investee when it is exposed, or has rights, to variable returns from its involvement with the investee and has the ability to affect those returns through its power over the investee. The existence and effects of potential voting rights that are currently exercisable or convertible are considered when assessing whether the Group controls another entity. Subsidiaries are fully consolidated from the date when control is transferred to the Group and de-consolidated from the date when control is lost.

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KB Financial Group Inc. and Subsidiaries

Notes to Consolidated Financial Statements

December 31, 2014 and 2013

If a subsidiary uses accounting policies other than those adopted in the consolidated financial statements for like transactions and events in similar circumstances, appropriate adjustments are made to make the subsidiary’s accounting policies conform to those of the Group when the subsidiary’s financial statements are used by the Group in preparing the consolidated financial statements.

Profit or loss and each component of other comprehensive income are attributed to the owners of the parent and to the non-controlling interests, if any. Total comprehensive income is attributed to the owners of the parent and to the non-controlling interests even if this results in the non-controlling interests having a deficit balance.

Transactions with non-controlling interests that do not result in loss of control are accounted for as equity transactions; that is, as transactions with the owners in their capacity as owners. The difference between fair value of any consideration paid and the relevant share acquired of the carrying value of net assets of the subsidiary is recorded in equity. Gains or losses on disposals to non-controlling interests are also recorded in equity.

When the Group ceases to have control, any retained interest in the entity is re-measured to its fair value at the date when control is lost, with the change in carrying amount recognized in profit or loss. The fair value is the initial carrying amount for the purposes of subsequently accounting for the retained interest as an associate, joint venture or financial asset. In addition, any amounts previously recognized in other comprehensive income in respect of that entity are accounted for as if the Group had directly disposed of the related assets or liabilities. This may mean that amounts previously recognized in other comprehensive income are reclassified to profit or loss.

The Group applies the acquisition method to account for business combinations. The consideration transferred is measured at the fair values of the assets transferred, and identifiable assets acquired and liabilities and contingent liabilities assumed in a business combination are initially measured at their fair values at the acquisition date. The Group recognizes any non-controlling interest in the acquiree on an acquisition-by-acquisition basis in the event of liquidation, either at fair value or at the non-controlling interest’s proportionate share of the recognized amounts of acquiree’s identifiable net assets. Acquisition-related costs are expensed as incurred.

3.1.2 Associates

Associates are entities over which the Group has significant influence in the financial and operating policy decisions. If the Group holds 20% or more of the voting power of the investee, it is presumed that the Group has significant influence.

Under the equity method, investments in associates are initially recognized at cost and the carrying amount is increased or decreased to recognize the Group’s share of the profit or loss of the investee and changes in the investee’s equity after the date of acquisition. The Group’s share of the profit or loss of the investee is recognized in the Group’s profit or loss. Distributions received from an investee reduce the carrying amount of the investment. Profit and losses resulting from ‘upstream’ and ‘downstream’ transactions between the Group and associates are eliminated to the extent of the Group’s interest in associates.

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KB Financial Group Inc. and Subsidiaries

Notes to Consolidated Financial Statements

December 31, 2014 and 2013

If associates use accounting policies other than those adopted in the consolidated financial statements for like transactions and events in similar circumstances, appropriate adjustments are made to make the associate’s accounting policies conform to those of the Group when the associate’s financial statements are used by the Group in applying equity method.

After the carrying amount of the investment is reduced to zero, additional losses are provided for, and a liability is recognized, only to the extent that the Group has incurred legal or constructive obligations or made payments on behalf of the investee.

The Group determines at each reporting date whether there is any objective evidence that the investments in the associates are impaired. If this is the case, the Group calculates the amount of impairment as the difference between the recoverable amount of the associates and its carrying value and recognizes the amount as ‘share of profit or loss of associates’ in the statements of comprehensive income.

3.1.3 Structured entity

A structured entity is an entity that has been designed so that voting or similar rights are not the dominant factor in deciding who controls the entity. When the Group decides whether it has power to the structured entities in which the Group has interests, it considers factors such as the purpose, the form, the practical ability to direct the relevant activities of a structured entity, the nature of its relationship with a structured entity and the amount of exposure to variable returns.

3.1.4 Management of Funds

The Group provides management services for trust assets, collective investment and other funds. These trusts and funds are not consolidated in the Group’s consolidated financial statements, except for trusts and funds over which the Group has control.

3.1.5 Intra-group transactions

All intra-group balances and transactions, and any unrealized gains arising on intra-group transactions, are eliminated in preparing the consolidated financial statements. Unrealized losses are eliminated in the same way as unrealized gains except that they are only eliminated to the extent that there is no evidence of impairment.

3.2 Foreign Currency

3.2.1 Foreign currency transactions and balances

A foreign currency transaction is recorded, on initial recognition in the functional currency, by applying the spot exchange rate between the functional currency and the foreign currency at the date of the transaction. At the end of each reporting period foreign currency monetary items are translated using the closing rate which is the spot exchange rate at the end of the reporting period. Non-monetary items that are measured at fair value in a foreign currency are translated using the spot exchange rates at the date when the fair value was determined and non-monetary items that are measured in terms of historical cost in a foreign currency are translated using the spot exchange rate at the date of the transaction.

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KB Financial Group Inc. and Subsidiaries

Notes to Consolidated Financial Statements

December 31, 2014 and 2013

Exchange differences arising on the settlement of monetary items or on translating monetary items at rates different from those at which they were translated on initial recognition during the period or in previous financial statements are recognized in profit or loss in the year in which they arise. When gains or losses on a non-monetary item are recognized in other comprehensive income, any exchange component of those gains or losses are also recognized in other comprehensive income. Conversely, when gains or losses on a non-monetary item are recognized in profit or loss, any exchange component of those gains or losses are also recognized in profit or loss.

3.2.2 Foreign Operations

The financial performance and financial position of all foreign operations, whose functional currencies differ from the Group’s presentation currency, are translated into the Group’s presentation currency using the following procedures:

Assets and liabilities for each statement of financial position presented are translated at the closing rate at the end of the reporting period. Income and expenses in the statement of comprehensive income presented are translated at average exchange rates for the period. All resulting exchange differences are recognized in other comprehensive income.

Any goodwill arising from the acquisition of a foreign operation and any fair value adjustments to the carrying amounts of assets and liabilities arising from the acquisition of that foreign operation are treated as assets and liabilities of the foreign operation. Thus they are expressed in the functional currency of the foreign operation and are translated into the presentation currency at the closing rate.

On the disposal of a foreign operation, the cumulative amount of the exchange differences relating to that foreign operation, recognized in other comprehensive income and accumulated in the separate component of equity, are reclassified from equity to profit or loss (as a reclassification adjustment) when the gains or losses on disposal are recognized. On the partial disposal of a subsidiary that includes a foreign operation, the Group re-attributes the proportionate share of the cumulative amount of the exchange differences recognized in other comprehensive income to the non-controlling interests in that foreign operation. In any other partial disposal of a foreign operation, the Group reclassifies to profit or loss only the proportionate share of the cumulative amount of the exchange differences recognized in other comprehensive income.

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KB Financial Group Inc. and Subsidiaries

Notes to Consolidated Financial Statements

December 31, 2014 and 2013

3.3 Recognition and Measurement of Financial Instruments

3.3.1 Initial recognition

The Group recognizes a financial asset or a financial liability in its statement of financial position when, the Group becomes a party to the contractual provisions of the instrument. A regular way purchase or sale of financial assets (a purchase or sale of a financial asset under a contract whose terms require delivery of the financial instruments within the time frame established generally by market regulation or practice) is recognized and derecognized using trade date accounting.

The Group classifies financial assets as financial assets at fair value through profit or loss, held-to-maturity financial assets, available-for-sale financial assets, or loans and receivables. The Group classifies financial liabilities as financial liabilities at fair value through profit or loss or other financial liabilities. The classification depends on the nature and holding purpose of the financial instrument at initial recognition in the financial statements.

At initial recognition, a financial asset or financial liability is measured at its fair value plus or minus, in the case of a financial asset or financial liability not at fair value through profit or loss, transaction costs that are directly attributable to the acquisition or issue of the financial asset or financial liability. The fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. The fair value of a financial instrument on initial recognition is normally the transaction price (that is, the fair value of the consideration given or received) in an arm’s length transaction.

3.3.2 Subsequent measurement

After initial recognition, financial instruments are measured at amortized cost or fair value based on classification at initial recognition.

Amortized cost

The amortized cost of a financial asset or financial liability is the amount at which the financial asset or financial liability is measured at initial recognition and adjusted to reflect principal repayments, cumulative amortization using the effective interest method and any reduction (directly or through the use of an allowance account) for impairment or uncollectibility.

Fair value

Fair values, which the Group primarily uses for the measurement of financial instruments, are the published price quotations based on market prices or dealer price quotations of financial instruments traded in an active market where available. These are the best evidence of fair value. A financial instrument is regarded as quoted in an active market if quoted prices are readily and regularly available from an exchange, dealer, broker, an entity in the same industry, pricing service or regulatory agency, and those prices represent actual and regularly occurring market transactions on an arm’s length basis.

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KB Financial Group Inc. and Subsidiaries

Notes to Consolidated Financial Statements

December 31, 2014 and 2013

If the market for a financial instrument is not active, fair value is determined either by using a valuation technique or independent third-party valuation service. Valuation techniques include using recent arm’s length market transactions between knowledgeable, willing parties, if available, referencing to the current fair value of another instrument that is substantially the same, discounted cash flow analysis and option pricing models.

The Group uses valuation models that are commonly used by market participants and customized for the Group to determine fair values of common over-the-counter (OTC) derivatives such as options, interest rate swaps and currency swaps which are based on the inputs observable in markets. For more complex instruments, the Group uses internally developed models, which are usually based on valuation methods and techniques generally recognized as standard within the industry, or a value measured by an independent external valuation institution as the fair values if all or some of the inputs to the valuation models are not market observable and therefore it is necessary to estimate fair value based on certain assumptions.

The Group’s Fair Value Evaluation Committee, which consists of the risk management department, trading department and accounting department, reviews the appropriateness of internally developed valuation models, and approves the selection and changing of the external valuation institution and other considerations related to fair value measurement. The review results on the fair valuation models are reported to the Market Risk Management subcommittee by the Fair Value Evaluation Committee on a regular basis.

If the valuation technique does not reflect all factors which market participants would consider in setting a price, the fair value is adjusted to reflect those factors. These factors include counterparty credit risk, bid-ask spread, liquidity risk and others.

The chosen valuation technique makes maximum use of market inputs and relies as little as possible on entity-specific inputs. It incorporates all factors that market participants would consider in setting a price and is consistent with accepted economic methodologies for pricing financial instruments. Periodically, the Group calibrates the valuation technique and tests it for validity using prices from observable current market transactions of the same instrument or based on other relevant observable market data.

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KB Financial Group Inc. and Subsidiaries

Notes to Consolidated Financial Statements

December 31, 2014 and 2013

3.3.3 Derecognition

Derecognition is the removal of a previously recognized financial asset or financial liability from the statement of financial position. The Group derecognizes a financial asset or a financial liability when, and only when:

Derecognition of financial assets

Financial assets are derecognized when the contractual rights to the cash flows from the financial assets expire or the financial assets have been transferred and substantially all the risks and rewards of ownership of the financial assets are also transferred, or all the risks and rewards of ownership of the financial assets are neither substantially transferred nor retained and the Group has not retained control. If the Group neither transfers nor disposes of substantially all the risks and rewards of ownership of the financial assets, the Group continues to recognize the financial asset to the extent of its continuing involvement in the financial asset.

If the Group transfers the contractual rights to receive the cash flows of the financial asset, but retains substantially all the risks and rewards of ownership of the financial asset, the Group continues to recognize the transferred asset in its entirely and recognize a financial liability for the consideration received.

Derecognition of financial liabilities

Financial liabilities are derecognized from the statement of financial position when the obligation specified in the contract is discharged, cancelled or expires.

3.3.4 Offsetting

Financial assets and liabilities are offset and the net amount reported in the consolidated statements of financial position where there is a legally enforceable right to offset the recognized amounts and there is an intention to settle on a net basis or realize the assets and settle the liability simultaneously. The legally enforceable right must not be contingent on future events and must be enforceable in the normal course of business and in the event of default, insolvency or bankruptcy of the Group or the counterparty.

3.4 Cash and cash equivalents

Cash and cash equivalents include cash on hand, foreign currency, and short-term, highly liquid investments that are readily convertible to known amounts of cash and which are subject to an insignificant risk of changes in value.

3.5 Non-derivative financial assets

3.5.1 Financial assets at fair value through profit or loss

This category comprises two sub-categories: financial assets classified as held for trading, and financial assets designated by the Group as at fair value through profit or loss upon initial recognition.

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KB Financial Group Inc. and Subsidiaries

Notes to Consolidated Financial Statements

December 31, 2014 and 2013

A non-derivative financial asset is classified as held for trading if either:

The Group may designate certain financial assets, other than held for trading, upon initial recognition as at fair value through profit or loss when one of the following conditions is met:

After initial recognition, a financial asset at fair value through profit or loss is measured at fair value and gains or losses arising from a change in the fair value are recognized in profit or loss. Interest income, dividend income, and gains or losses from sale and repayment from financial assets at fair value through profit or loss are recognized in the statement of comprehensive income as net gains on financial instruments at fair value through profit or loss.

3.5.2 Financial Investments

Available-for-sale and held-to-maturity financial assets are presented as financial investments.

Available-for-sale financial assets

Profit or loss of financial assets classified as available for sale, except for impairment loss and foreign exchange gains and losses resulting from changes in amortized cost of debt securities, is recognized as other comprehensive income, and cumulative profit or loss is reclassified from equity to current profit or loss at the derecognition of the financial asset, and it is recognized as part of other operating profit or loss in the statement of comprehensive income.

However, interest revenue measured using the effective interest method is recognized in current profit or loss, and dividends of financial assets classified as available-for-sale are recognized when the right to receive payment is established.

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KB Financial Group Inc. and Subsidiaries

Notes to Consolidated Financial Statements

December 31, 2014 and 2013

Available-for-sale financial assets denominated in foreign currencies are translated at the closing rate. For available-for-sale debt securities denominated in foreign currency, exchange differences resulting from changes in amortized cost are recognized in profit or loss as part of other operating income and expenses. For available-for-sale equity securities denominated in foreign currency, the entire change in fair value including any exchange component is recognized in other comprehensive income.

Held-to-maturity financial assets

Held-to-maturity financial assets are non-derivative financial assets with fixed or determinable payments and fixed maturity that the Group’s management has the positive intention and ability to hold to maturity. Held-to-maturity financial assets are subsequently measured at amortized cost using the effective interest method after initial recognition and interest income is recognized using the effective interest method.

3.5.3 Loans and receivables

Non-derivative financial assets which meet the following conditions are classified as loans and receivables:

After initial recognition, these are subsequently measured at amortized cost using the effective interest method.

If the financial asset is purchased under an agreement to resale the asset at a fixed price or at a price that provides a lender’s return on the purchase price, the consideration paid is recognized as loans and receivables.

3.6 Impairment of financial assets

The Group assesses at the end of each reporting period whether there is any objective evidence that a financial asset or group of financial assets except for financial assets at fair value through profit or loss is impaired. A financial asset or a group of financial assets is impaired and impairment losses are incurred, if and only if, there is objective evidence of impairment as a result of one or more events that occurred after the initial recognition of the asset (a ‘loss event’) and that loss event (or events) has an impact on the estimated future cash flows of the financial asset or group of financial assets that can be reliably estimated. However, losses expected as a result of future events, no matter how likely, are not recognized.

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KB Financial Group Inc. and Subsidiaries

Notes to Consolidated Financial Statements

December 31, 2014 and 2013

Objective evidence that a financial asset or group of assets is impaired includes observable data that comes to the attention of the holder of the asset about the following loss events:

In addition to the types of events in the preceding paragraphs, objective evidence of impairment for an investment in an equity instrument classified as an available-for-sale financial asset includes a significant or prolonged decline in the fair value below its cost. Accordingly, the Group considers the decline in the fair value of over 30% against the original cost as a “significant decline” and a six-month decline in the fair value below its cost for an equity instrument as a “prolonged decline”.

If there is objective evidence that an impairment loss has been incurred, the amount of the loss is measured and recognized in profit or loss as either provisions for credit loss or other operating income and expenses.

3.6.1 Loans and receivables

If there is objective evidence that an impairment loss on loans and receivables carried at amortized cost has been incurred, the amount of the loss is measured as the difference between the asset’s carrying amount and the present value of estimated future cash flows (excluding future credit losses that have not been incurred) discounted at the financial asset’s original effective interest rate.

The Group first assesses whether objective evidence of impairment exists individually for financial assets that are individually significant (individual assessment of impairment), and individually or collectively for financial assets that are not individually significant. If the Group determines that no objective evidence of impairment exists for an individually assessed financial asset, whether significant or not, it includes the asset in a group of financial assets with similar credit risk characteristics and collectively assesses them for impairment (collective assessment of impairment).

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KB Financial Group Inc. and Subsidiaries

Notes to Consolidated Financial Statements

December 31, 2014 and 2013

Individual assessment of impairment

Individual assessment of impairment losses are calculated by discounting the expected future cash flows of a loan at its original effective interest rate and comparing the resultant present value with the loan’s current carrying amount. This process normally encompasses management’s best estimate, such as operating cash flow of the borrower and net realizable value of any collateral held.

Collective assessment of impairment

A methodology based on historical loss experience is used to estimate inherent incurred loss on groups of assets for collective assessment of impairment. Such methodology incorporates factors such as type of collateral, product and borrowers, credit rating, loss emergence period, recovery period and applies probability of default on a group of assets and loss given default by type of recovery method. Also, consistent assumptions are applied to form a formula-based model in estimating inherent loss and to determine factors on the basis of historical loss experience and current condition. The methodology and assumptions used for collective assessment of impairment are reviewed regularly to reduce any differences between loss estimates and actual loss experience.

Impairment loss on loans reduces the carrying amount of the asset through use of an allowance account, and when a loan becomes uncollectable, it is written off against the related allowance account. If, in a subsequent period, the amount of the impairment loss decreases and is objectively related to the subsequent event after recognition of impairment, the previously recognized impairment loss is reversed by adjusting the allowance account. The amount of the reversal is recognized in profit or loss.

3.6.2 Available-for-sale financial assets

When a decline in the fair value of an available-for-sale financial asset has been recognized in other comprehensive income and there is objective evidence that the asset is impaired, the cumulative loss (the difference between the acquisition cost and current fair value, less any impairment loss on that financial asset previously recognized in profit or loss) that had been recognized in other comprehensive income is reclassified from equity to profit or loss as part of other operating income and expenses. The impairment loss on available-for-sale financial assets is directly deducted from the carrying amount.

If, in a subsequent period, the fair value of a debt instrument classified as available-for-sale increases and the increase can be objectively related to an event occurring after the impairment loss was recognized in profit or loss, a portion of the impairment loss is reversed up to but not exceeding the previously recorded impairment loss, with the amount of the reversal recognized in profit or loss as part of other operating income and expenses in the statement of comprehensive income. However, impairment losses recognized in profit or loss for an available-for-sale equity instrument classified as available for sale are not reversed through profit or loss.

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KB Financial Group Inc. and Subsidiaries

Notes to Consolidated Financial Statements

December 31, 2014 and 2013

3.6.3 Held-to-maturity financial assets

If there is objective evidence that an impairment loss on held-to-maturity financial assets carried at amortized cost has been incurred, the amount of the loss is measured as the difference between the asset’s carrying amount and the present value of estimated future cash flows discounted at the financial asset’s original effective interest rate. The amount of the loss is recognized in profit or loss as part of other operating income and expenses. The impairment loss on held-to-maturity financial assets is directly deducted from the carrying amount.

In the case of a financial asset classified as held to maturity, if, in a subsequent period, the amount of the impairment loss decreases and it is objectively related to an event occurring after the impairment is recognized, a portion of the previously recognized impairment loss is reversed up to but not exceeding the amortized cost at the date of recovery. The amount of reversal is recognized in profit or loss as part of other operating income and expenses in the statement of comprehensive income.

3.7 Derivative Financial Instruments

The Group enters into numerous derivative financial instrument contracts such as currency forwards, interest rate swaps, currency swaps and others for trading purposes or to manage its exposures to fluctuations in interest rates and currency exchange, amongst others. These derivative financial instruments are presented as derivative financial instruments within the financial statements irrespective of transaction purpose and subsequent measurement requirement.

The Group designates certain derivatives as hedging instruments to hedge the risk of changes in fair value of a recognized asset or liability or of an unrecognized firm commitment (fair value hedge) and the risk of changes in cash flow (cash flow hedge).

At the inception of the hedge there is formal designation and documentation of the hedging relationship and the Group’s risk management objective and strategy for undertaking the hedge. That documentation includes identification of the hedging instrument, the hedged item or transaction, the nature of the risk being hedged and how the entity will assess the hedging instrument’s effectiveness in offsetting the exposure to changes in the hedged item’s fair value attributable to the hedged risk.

3.7.1 Derivative financial instruments held for trading

All derivative financial instruments, except for derivatives that are designated and qualify for hedge accounting, are classified as financial instruments held for trading and are measured at fair value. Gains or losses arising from a change in fair value are recognized in profit or loss as part of net gains or losses on financial instruments at fair value through profit or loss.

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KB Financial Group Inc. and Subsidiaries

Notes to Consolidated Financial Statements

December 31, 2014 and 2013

3.7.2 Fair value hedges

If derivatives qualify for a fair value hedge, the change in fair value of the hedging instrument and the change in fair value of the hedged item attributable to the hedged risk are recognized in profit or loss as part of other operating income and expenses. Fair value hedge accounting is discontinued prospectively if the hedging instrument expires or is sold, terminated or exercised, or the hedge no longer meets the criteria for hedge accounting or the Group revokes the designation. Once fair value hedge accounting is discontinued, the adjustment to the carrying amount of a hedged item is fully amortized to profit or loss by the maturity of the financial instrument using the effective interest method.

3.7.3 Cash flow hedges

The portion of the gain or loss on the hedging instrument that is determined to be an effective hedge is recognized directly in other comprehensive income and the ineffective portion of the gain or loss on the hedging instrument is recognized in profit or loss. The associated gains or losses that were previously recognized in other comprehensive income are reclassified from equity to profit or loss as a reclassification adjustment in the same period or periods during which the hedged forecast cash flows affects profit or loss. Cash flow hedge accounting is discontinued prospectively if the hedging instrument expires or is sold, terminated or exercised, or the hedge no longer meets the criteria for hedge accounting or the Group revokes the designation. When the cash flow hedge accounting is discontinued, the cumulative gains or losses on the hedging instrument that have been recognized in other comprehensive income are reclassified to profit or loss over the year in which the forecast transaction occurs. If the forecast transaction is no longer expected to occur, the cumulative gains or losses that had been recognized in other comprehensive income are immediately reclassified to profit or loss.

3.7.4 Embedded derivatives

An embedded derivative is separated from the host contract and accounted for as a derivative if, and only if the economic characteristics and risks of the embedded derivative are not closely related to those of the host contract and a separate instrument with the same terms as the embedded derivative would meet the definition of a derivative and the hybrid (combined) instrument is not measured at fair value with changes in fair value recognized in profit or loss. Gains or losses arising from a change in the fair value of an embedded derivative separated from the host contract are recognized in profit or loss as part of net gains or losses on financial instruments at fair value through profit or loss.

3.7.5 Day one gain and loss

If the Group uses a valuation technique that incorporates data not obtained from observable markets for the fair value at initial recognition of the financial instrument, there may be a difference between the transaction price and the amount determined using that valuation technique. In these circumstances, the difference is deferred and not recognized in profit or loss, and is amortized by using the straight-line method over the life of the financial instrument. If the fair value of the financial instrument is subsequently determined using observable market inputs, the remaining deferred amount is recognized in profit or loss as part of net gains or losses on financial instruments at fair value through profit or loss or other operating income and expenses.

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KB Financial Group Inc. and Subsidiaries

Notes to Consolidated Financial Statements

December 31, 2014 and 2013

3.8 Property and equipment

3.8.1 Recognition and Measurement

All property and equipment that qualify for recognition as an asset are measured at cost and subsequently carried at cost less any accumulated depreciation and any accumulated impairment losses.

The cost of property and equipment includes any costs directly attributable to bringing the asset to the location and condition necessary for it to be capable of operating in the manner intended by management and the initial estimate of the costs of dismantling and removing the item and restoring the site on which it is located.

Subsequent expenditures are capitalized only when they prolong the useful life or enhance values of the assets but the costs of the day-to-day servicing of the assets such as repair and maintenance costs are recognized in profit or loss as incurred. When part of an item of an asset has a useful life different from that of the entire asset, it is recognized as a separate asset.

3.8.2 Depreciation

Land is not depreciated, whereas other property and equipment are depreciated using the method that reflects the pattern in which the asset’s future economic benefits are expected to be consumed by the Group. The depreciable amount of an asset is determined after deducting its residual value. As for leased assets, if there is no reasonable certainty that the Group will obtain ownership by the end of the lease term, the asset is fully depreciated over the shorter of the lease term and its useful life.

Each part of an item of property and equipment with a cost that is significant in relation to the total cost of the item is depreciated separately.

The depreciation method and estimated useful lives of the assets are as follows:

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KB Financial Group Inc. and Subsidiaries

Notes to Consolidated Financial Statements

December 31, 2014 and 2013

The residual value, the useful life and the depreciation method applied to an asset are reviewed at least at each financial year end, if expectations differ from previous estimates, the changes are accounted for as a change in an accounting estimate.

3.9 Investment properties

3.9.1 Recognition and Measurement

Properties held to earn rentals or for capital appreciation or both are classified as investment properties. Investment properties are measured initially at their cost and subsequently the cost model is used.

3.9.2 Depreciation

Land is not depreciated, whereas other investment properties are depreciated using the method that reflects the pattern in which the asset’s future economic benefits are expected to be consumed by the Group. The depreciable amount of an asset is determined after deducting its residual value.

The depreciation method and estimated useful lives of the assets are as follows:

The residual value, the useful life and the depreciation method applied to an asset are reviewed at least at each financial year end and, if expectations differ from previous estimates or if there has been a significant change in the expected pattern of consumption of the future economic benefits embodied in the asset, the changes are accounted for as a change in an accounting estimate.

3.10 Intangible assets

Intangible assets are measured initially at cost and subsequently carried at their cost less any accumulated amortization and any accumulated impairment losses.

Intangible assets, except for goodwill and membership rights, are amortized using the straight-line method with no residual value over their estimated useful economic life since the asset is available for use.

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KB Financial Group Inc. and Subsidiaries

Notes to Consolidated Financial Statements

December 31, 2014 and 2013

The amortization period and the amortization method for intangible assets with a finite useful life are reviewed at least at each financial year end. Where an intangible asset is not being amortized because its useful life is considered to be indefinite, the Group carries out a review in each accounting period to confirm whether or not events and circumstances still support the assumption of an indefinite useful life. If they do not, the change from the indefinite to finite useful life is accounted for as a change in an accounting estimate.

3.10.1 Goodwill

Recognition and measurement

Goodwill acquired from business combinations before January 1, 2010, is stated at its carrying amount which was recognized under the Group’s previous accounting policy, prior to the transition to K-IFRS.

Goodwill acquired from business combinations is initially measured as the excess of the aggregate of the consideration transferred, fair value of non-controlling interest and the acquisition-date fair value of the acquirer’s previously held equity interest in the acquiree over the net identifiable assets acquired and liabilities assumed. If this consideration is lower than the fair value of the net assets of the business acquired, the difference is recognized in profit or loss.

For each business combination, the Group decides whether the non-controlling interest in the acquiree is initially measured at fair value or at the non-controlling interest’s proportionate share of the acquiree’s identifiable net assets at the acquisition date.

Acquisition-related costs incurred to effect a business combination are charged to expenses in the periods in which the costs are incurred and the services are received, except for the costs to issue debt or equity securities.

Additional acquisitions of non-controlling interest

Additional acquisitions of non-controlling interests are accounted for as equity transactions. Therefore, no additional goodwill is recognized.

Subsequent measurement

Goodwill is not amortized and is stated at cost less accumulated impairment losses. However, goodwill that forms part of the carrying amount of an investment in associates is not separately recognized and an impairment loss recognized is not allocated to any asset, including goodwill, which forms part of the carrying amount of the investment in the associates.

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KB Financial Group Inc. and Subsidiaries

Notes to Consolidated Financial Statements

December 31, 2014 and 2013

3.10.2 Subsequent expenditure

Subsequent expenditure is capitalized only when it enhances values of the assets. Internally generated intangible assets, such as goodwill and trade name, are not recognized as assets but expensed as incurred.

3.11 Leases

3.11.1 Finance lease

A lease is classified as a finance lease if it transfers substantially all the risks and rewards incidental to ownership. At the commencement of the lease term, the Group recognizes finance leases as assets and liabilities in its statements of financial position at amounts equal to the fair value of the leased property or, if lower, the present value of the minimum lease payments, each determined at the inception of the lease. Any initial direct costs of the lessee are added to the amount recognized as an asset.

Minimum lease payments are apportioned between the finance charge and the reduction of the outstanding liability. The finance charge is allocated to each period during the lease term so as to produce a constant periodic rate of interest on the remaining balance of the liability. Contingent rents are charged as expenses in the periods in which they are incurred.

The depreciable amount of a leased asset is allocated to each accounting period during the period of expected use on a systematic basis consistent with the depreciation policy the Group adopts for depreciable assets that are owned. If there is reasonable certainty that the lessee will obtain ownership by the end of the lease term, the period of expected use is the useful life of the asset; otherwise, the asset is fully depreciated over the shorter of the lease term and its useful life.

3.11.2 Operating lease

A lease is classified as an operating lease if it does not transfer substantially all the risks and rewards incidental to ownership.

Leases in the financial statements of lessors

Lease income from operating leases are recognized in income on a straight-line basis over the lease term, unless another systematic basis is more representative of the time pattern in which use benefit derived from the leased asset is diminished. Initial direct costs incurred by lessors in negotiating and arranging an operating lease are added to the carrying amount of the leased asset and recognized as an expense over the lease term on the same basis as the lease income.

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KB Financial Group Inc. and Subsidiaries

Notes to Consolidated Financial Statements

December 31, 2014 and 2013

Leases in the financial statements of lessees

Lease payments under an operating lease (net of any incentives received from the lessor) are recognized as an expense on a straight-line basis over the lease term unless another systematic basis is more representative of the time pattern of the asset’s benefit.

3.12 Impairment of non-financial assets

The Group assesses at the end of each reporting period whether there is any indication that a non-financial asset, except for (i) deferred income tax assets, (ii) assets arising from employee benefits and (iii) non-current assets (or group of assets to be sold) classified as held for sale, may be impaired. If any such indication exists, the Group estimates the recoverable amount of the asset. However, irrespective of whether there is any indication of impairment, the Group tests (i) goodwill acquired in a business combination, (ii) intangible assets with an indefinite useful life and (iii) intangible assets not yet available for use for impairment annually by comparing their carrying amount with their recoverable amount.

The recoverable amount is estimated for the individual asset. If it is not possible to estimate the recoverable amount of the individual asset, the Group determines the recoverable amount of the cash-generating unit to which the asset belongs (the asset’s cash-generating unit). A cash-generating unit is the smallest identifiable group of assets that generates cash inflows that are largely independent of the cash inflows from other assets or groups of assets. The recoverable amount of an asset is the higher of its fair value less costs to sell and its value in use. Value in use is the present value of the future cash flows expected to be derived from an asset or cash-generating unit that are discounted by a pre-tax rate that reflects current market assessments of the time value of money and the risks specific to the asset for which the future cash flow estimates have not been adjusted.

If the recoverable amount of an asset is less than its carrying amount, the carrying amount of the asset is reduced to its recoverable amount. That reduction is an impairment loss and recognized immediately in profit or loss. For the purpose of impairment testing, goodwill acquired in a business combination is allocated to each of the cash-generating units that are expected to benefit from the synergies of the combination. The impairment loss is allocated first to reduce the carrying amount of any goodwill allocated to the cash-generating unit and then to the other assets of the unit pro rata on the basis of the carrying amount of each asset in the unit.

An impairment loss recognized for goodwill is not reversed in a subsequent period. The Group assesses at the end of each reporting period whether there is any indication that an impairment loss recognized in prior periods for an asset, other than goodwill, may no longer exist or may have decreased, and an impairment loss recognized in prior periods for an asset other than goodwill shall be reversed if, and only if, there has been a change in the estimates used to determine the asset’s recoverable amount since the last impairment loss was recognized. The increased carrying amount of an asset other than goodwill attributable to a reversal of an impairment loss cannot exceed the carrying amount that would have been determined (net of amortization or depreciation) had no impairment loss been recognized for the asset in prior years.

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KB Financial Group Inc. and Subsidiaries

Notes to Consolidated Financial Statements

December 31, 2014 and 2013

3.13 Non-current assets held for sale

A non-current asset or disposal group is classified as held for sale if its carrying amount will be recovered principally through a sale transaction rather than through continuing use. For this to be the case, the asset (or disposal group) must be available for immediate sale in its present condition and its sale must be highly probable. A non-current asset (or disposal group) classified as held for sale is measured at the lower of its carrying amount and fair value less costs to sell which is measured in accordance with the applicable K-IFRS, immediately before the initial classification of the asset (or disposal group) as held for sale.

A non-current asset while it is classified as held for sale or while it is part of a disposal group classified as held for sale is not depreciated (or amortized).

Impairment loss is recognized for any initial or subsequent write-down of the asset (or disposal group) to fair value less costs to sell. Gains are recognized for any subsequent increase in fair value less costs to sell of an asset, but not in excess of the cumulative impairment loss that has been recognized.

3.14 Financial liabilities at fair value through profit or loss

Financial liabilities at fair value through profit or loss are financial liabilities held for trading. After initial recognition, financial liabilities at fair value through profit or loss are measured at fair value and gains or losses arising from changes in the fair value, and gains or losses from sale and repayment of financial liabilities at fair value through profit or loss are recognized as net gains on financial instruments at fair value through profit or loss in the statement of comprehensive income.

3.15 Insurance Contracts

KB Life Insurance Co., Ltd., one of the subsidiaries of the Group, issues insurance contracts.

Insurance contracts are defined as “a contract under which one party (the insurer) accepts significant insurance risk from another party by agreeing to compensate the policyholder if a specified uncertain future event adversely affects the policyholder”. A contract that qualifies as an insurance contract remains an insurance contract until all rights and obligations are extinguished or expire. Such a contract that does not contain significant insurance risk is classified as an investment contract and is within the scope of K-IFRS 1039, Financial Instruments: Recognition and measurement to the extent that it gives rise to a financial asset or financial liability, except if the investment contract contains a Discretionary Participation Features (DPF). If the contract has a DPF, the contract is subject to K-IFRS 1104, Insurance Contracts. The Group recognizes assets (liabilities) and gains (losses) relating to insurance contracts as other assets (liabilities) in the statements of financial position, and as other operating income (expenses) in the statements of comprehensive income, respectively.

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KB Financial Group Inc. and Subsidiaries

Notes to Consolidated Financial Statements

December 31, 2014 and 2013

3.15.1 Insurance premiums

The Group recognizes collected premiums as revenue when a due date of collection of premiums from insurance contracts comes and the collected premium which is unmatured at the end of the reporting period is recognized as unearned premium.

3.15.2 Insurance liabilities

The Group recognizes a liability for future claims, refunds, policyholders’ dividends and related expenses as follows:

Premium reserve

A premium reserve refers to an amount based on the net premium method for payment of future claims with respect to events covered by insurance policies which have not yet occurred as of the reporting date.

Reserve for outstanding claims

A reserve for outstanding claims refers to the amount not yet paid, out of an amount to be paid or expected to be paid with respect to the insured events which have arisen as of the end of each fiscal year.

Unearned premium reserve

Unearned premium refers to the portion of the premium that has been paid in advance for insurance that has not yet been provided. An unearned premium reserve refers to the amount maintained by the insurer to refund in the event of either party cancelling the contract.

Policyholders’ dividends reserve

Policyholders’ dividends reserve including an interest rate guarantee reserve, a mortality dividend reserve and an interest rate difference dividend reserve is recognized for the purpose of provisioning for policyholders’ dividends in the future in accordance with statutes or insurance terms and conditions.

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KB Financial Group Inc. and Subsidiaries

Notes to Consolidated Financial Statements

December 31, 2014 and 2013

3.15.3 Liability adequacy test

The Group assesses at each reporting date whether its insurance liabilities are adequate, using current estimates of all future contractual cash flows and related cash flow such as claims handling cost, as well as cash flows resulting from embedded options and guarantees under its insurance contracts in accordance with K-IFRS 1104. If the assessment shows that the carrying amount of its insurance liabilities is inadequate in light of the estimated future cash flows, the entire deficiency is recognized in profit or loss and reserved as insurance liabilities. Future cash flows from long-term insurance are discounted at a future rate of return on operating assets, whereas future cash flows from general insurance are not discounted to present value. For liability adequacy tests of premium and unearned premium reserves, the Group considers all cash flow factors such as future insurance premium, deferred acquisition costs, operating expenses and operating premiums. In relation to the reserve for outstanding claims, the Group elects a model that best reflects the trend of paid claims among several statistical methods to perform the adequacy test.

3.15.4 Deferred acquisition costs

Acquisition cost is deferred in an amount actually spent for an insurance contract and equally amortized over the premium payment period or the period in which acquisition costs are charged for the relevant insurance contract. Acquisition costs are amortized over the shorter of seven years or premium payment period; if there is any unamortized acquisition costs remaining as of the date of surrender or lapse, such remainder shall be amortized in the period in which the contract is surrendered or lapsed.

3.16 Provisions

Provisions are recognized when the Group has a present obligation (legal or constructive) as a result of a past event and it is probable that an outflow of resources embodying economic benefits will be required to settle the obligation and a reliable estimate can be made of the amount of the obligation. The risks and uncertainties that inevitably surround many events and circumstances are taken into account in reaching the best estimate of provisions, and where the effect of the time value of money is material, the amount of provisions are the present value of the expenditures expected to be required to settle the obligation.

Provisions on confirmed and unconfirmed acceptances and guarantees, unfunded commitments of credit cards and unused credit lines of consumer and corporate loans are recognized using a valuation model that applies the credit conversion factor, probability of default, and loss given default.

Provisions are reviewed at the end of each reporting period and adjusted to reflect the current best estimate. If it is no longer probable that an outflow of resources embodying economic benefits will be required to settle the obligation, the provisions are reversed.

If the Group has a contract that is onerous, the present obligation under the contract is recognized and measured as provisions. An onerous contract is a contract in which the unavoidable costs of meeting the obligations under the contract exceed the economic benefits expected to be received under it. The unavoidable costs under a contract reflect the minimum net cost to exit from the contract, which is the lower of the cost of fulfilling it and any compensation or penalties arising from failure to fulfill it.

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KB Financial Group Inc. and Subsidiaries

Notes to Consolidated Financial Statements

December 31, 2014 and 2013

3.17 Financial guarantee contracts

A financial guarantee contract is a contract that requires the issuer (the Group) to make specified payments to reimburse the holder for a loss it incurs because a specified debtor fails to make payments when due in accordance with the original or modified terms of a debt instrument.

Financial guarantee contracts are initially recognized at fair value. After initial recognition, financial guarantee contracts are measured at the higher of:

3.18 Equity instruments issued by the Group

An equity instrument is any contract or agreement that evidences a residual interest in the assets of an entity after deducting all of its liabilities.

3.18.1 Ordinary shares

Ordinary shares are classified as equity. Incremental costs directly attributable to the issue of new shares are deducted, net of tax, from the equity.

3.18.2 Treasury shares

If entities of the Group reacquire the Parent Company’s equity instruments, those instruments (‘treasury shares’) are deducted from equity. No gains or losses are recognized in profit or loss on the purchase, sale, issue or cancellation of own equity instruments.

3.19 Revenue recognition

3.19.1 Interest income and expense

Interest income and expense are recognized using the effective interest method. The effective interest method is a method of calculating the amortized cost of a financial asset or a financial liability (or groups of financial assets or financial liabilities) and of allocating the interest income or interest expense over the relevant period.

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KB Financial Group Inc. and Subsidiaries

Notes to Consolidated Financial Statements

December 31, 2014 and 2013

The effective interest rate is the rate that exactly discounts estimated future cash receipts or payments through the expected life of the financial instrument or, where appropriate, a shorter period, to the net carrying amount of the financial asset or financial liability. When calculating the effective interest rate, the Group estimates cash flows considering all contractual terms of the financial instrument but does not consider future credit losses. The calculation includes all fees and points paid or received between parties to the contract that are an integral part of the effective interest rate, transaction costs, and all other premiums or discounts. In those rare cases when it is not possible to estimate reliably the cash flows or the expected life of a financial instrument (or group of financial instruments), the Group uses the contractual cash flows over the full contractual term of the financial instrument (or group of financial instruments).

Interest on impaired financial assets is recognized using the rate of interest used to discount the future cash flows for the purpose of measuring the impairment loss.

3.19.2 Fee and commission income

The Group recognizes financial service fees in accordance with the accounting standard of the financial instrument related to the fees earned.

Fees that are an integral part of the effective interest of a financial instrument

Such fees are generally treated as adjustments of effective interest. Such fees may include compensation for activities such as evaluating the borrower’s financial condition, evaluating and recording guarantees, collateral and other security arrangements, negotiating the terms of the instrument, preparing and processing documents and closing the transaction and origination fees received on issuing financial liabilities measured at amortized cost. However, fees relating to the creation or acquisition of a financial instrument at fair value through profit or loss are recognized as revenue immediately.

Fees earned as services are provided

Such fees are recognized as revenue as the services are provided. The fees include fees charged for servicing a financial instrument and charged for managing investments.

Fees that are earned on the execution of a significant act

Such fees are recognized as revenue when the significant act has been completed.

Commission on the allotment of shares to a client is recognized as revenue when the shares have been allotted and placement fees for arranging a loan between a borrower and an investor is recognized as revenue when the loan has been arranged.

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KB Financial Group Inc. and Subsidiaries

Notes to Consolidated Financial Statements

December 31, 2014 and 2013

A syndication fee received by the Group that arranges a loan and retains no part of the loan package for itself (or retains a part at the same effective interest rate for comparable risk as other participants) is compensation for the service of syndication. Such a fee is recognized as revenue when the syndication has been completed.

3.19.3 Dividend income

Dividend income is recognized in profit or loss when the right to receive payment is established. Dividend income from financial assets at fair value through profit or loss and financial investment is recognized in profit or loss as part of net gains on financial assets at fair value through profit or loss and other operating income and expenses, respectively.

3.20 Employee compensation and benefits

3.20.1 Post-employment benefits:

Defined benefit plans

All post-employment benefits, other than defined contribution plans, are classified as defined benefit plans. The amount recognized as a defined benefit liability is the present value of the defined benefit obligation less the fair value of plan assets at the end of the reporting period.

The present value of the defined benefit obligation is calculated annually by independent actuaries using the Projected Unit Credit method. The rate used to discount post-employment benefit obligations is determined by reference to market yields at the end of the reporting period on high quality corporate bonds. The currency and term of the corporate bonds are consistent with the currency and estimated term of the post-employment benefit obligations. Actuarial gains and losses including experience adjustments and the effects of changes in actuarial assumptions are recognized in other comprehensive income (loss).

When the total of the present value of the defined benefit obligation minus the fair value of plan assets results in an asset, it is recognized to the extent of the present value of any economic benefits available in the form of refunds from the plan or reductions in future contributions to the plan.

Past service cost is the change in the present value of the defined benefit obligation, which arises when the Group introduces a defined benefit plan or changes the benefits of an existing defined benefit plan. Such past service cost is immediately recognized as an expense for the year.

Defined contribution plans

The contributions are recognized as employee benefit expense when they are due.

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KB Financial Group Inc. and Subsidiaries

Notes to Consolidated Financial Statements

December 31, 2014 and 2013

3.20.2 Short-term employee benefits

Short-term employee benefits are employee benefits (other than termination benefits) that are due to be settled within 12 months after the end of the period in which the employees render the related service. The undiscounted amount of short-term employee benefits expected to be paid in exchange for that service is recognized as a liability (accrued expense), after deducting any amount already paid.

The expected cost of profit-sharing and bonus payments are recognized as liabilities when the Group has a present legal or constructive obligation to make such payments as a result of past events rendered by employees and a reliable estimate of the obligation can be made.

3.20.3 Share-based payment

The Group operates share-based payment arrangements granting awards to directors and employees of the Group. The Group has a choice of whether to settle the awards in cash or by issuing equity instruments of the parent company at the date of settlement.

For a share-based payment transaction in which the terms of the arrangement provide the Group with the choice of whether to settle in cash or by issuing equity instruments, the Group determined that it has a present obligation to settle in cash because the Group has a past practice and a stated policy of settling in cash. Therefore, the Group accounts for the transaction in accordance with the requirements of cash-settled share-based payment transactions.

The Group measures the services acquired and the liability incurred at fair value. Until the liability is settled, the Group remeasures the fair value of the liability at the end of each reporting period and at the date of settlement, with any changes in fair value recognized in profit or loss for the year.

3.20.4 Termination benefits

Termination benefits are payable when employment is terminated by the Group before the normal retirement date, or whenever an employee accepts voluntary redundancy in exchange for these benefits. An entity shall recognize a liability and expense for termination benefits at the earlier of the following dates: when the entity can no longer withdraw the offer of those benefits and when the entity recognizes costs for a restructuring that is within the scope of K-IFRS 1037 and involves the payment of termination benefits. Termination benefits are measured by considering the number of employees expected to accept the offer in the case of a voluntary early retirement. Termination benefits over 12 months after the reporting period are discounted to present value.

35

KB Financial Group Inc. and Subsidiaries

Notes to Consolidated Financial Statements

December 31, 2014 and 2013

3.21 Income tax expenses

Income tax expense (tax income) comprises current tax expense (current tax income) and deferred income tax expense (deferred income tax income). Current and deferred income tax are recognized as income or expense and included in profit or loss for the year, except to the extent that the tax arises from (a) a transaction or an event which is recognized, in the same or a different period outside profit or loss, either in other comprehensive income or directly in equity and (b) a business combination.

3.21.1 Current income tax

Current income tax is the amount of income taxes payable (recoverable) in respect of the taxable profit (tax loss) for a period. A difference between the taxable profit and accounting profit may arise when income or expense is included in accounting profit in one period, but is included in taxable profit in a different period. Differences may also arise if there is revenue that is exempt from taxation, or expense that is not deductible in determining taxable profit (tax loss). Current income tax liabilities (assets) for the current and prior periods are measured at the amount expected to be paid to (recovered from) the taxation authorities, using the tax rates (and tax laws) that have been enacted or substantively enacted by the end of the reporting period.

The Group offsets current income tax assets and current income tax liabilities if, and only if, the Group (a) has a legally enforceable right to offset the recognized amounts and (b) intends either to settle on a net basis, or to realize the asset and settle the liability simultaneously.

3.21.2 Deferred income tax

Deferred income tax is recognized, using the asset-liability method, on temporary differences arising between the tax based amount of assets and liabilities and their carrying amount in the financial statements. Deferred income tax liabilities are recognized for all taxable temporary differences and deferred income tax assets are recognized for all deductible temporary differences to the extent that it is probable that taxable profit will be available against which the deductible temporary difference can be utilized. However, deferred income tax liabilities are not recognized if they arise from the initial recognition of goodwill; deferred income tax is not accounted for if it arises from initial recognition of an asset or liability in a transaction other than a business combination that at the time of the transaction affects neither accounting nor taxable profit or loss.

Deferred income tax is provided on temporary differences arising on investments in subsidiaries and associates, except for deferred income tax liabilities for which the timing of the reversal of the temporary difference is controlled by the Group and it is probable that the temporary difference will not reverse in the foreseeable future.

36

KB Financial Group Inc. and Subsidiaries

Notes to Consolidated Financial Statements

December 31, 2014 and 2013

The carrying amount of a deferred income tax asset is reviewed at the end of each reporting period. The Group reduces the carrying amount of a deferred income tax asset to the extent that it is no longer probable that sufficient taxable profit will be available to allow the benefit of part or all of that deferred income tax asset to be utilized.

Deferred income tax assets and liabilities are measured at the tax rates that are expected to apply to the period when the asset is realized or the liability is settled, based on tax rates (and tax laws) that have been enacted or substantively enacted by the end of the reporting period. The measurement of deferred income tax liabilities and deferred income tax assets reflects the tax consequences that would follow from the manner in which the Group expects, at the end of the reporting period, to recover or settle the carrying amount of its assets and liabilities.

The Group offsets deferred income tax assets and deferred income tax liabilities when the Group has a legally enforceable right to offset current income tax assets against current income tax liabilities; and the deferred income tax assets and the deferred income tax liabilities relate to income taxes levied by the same taxation authority on either the same taxable entity; or different taxable entities which intend either to settle current income tax liabilities and assets on a net basis, or to realize the assets and settle the liabilities simultaneously, in each future period in which significant amounts of deferred income tax liabilities or assets are expected to be settled or recovered.

3.21.3 Uncertain tax positions

Uncertain tax positions arise from a claim for rectification brought by the Group, an appeal for a refund of tax levied by the tax authorities, or others due to different interpretation of tax laws or others. The Group recognizes its uncertain tax positions in the consolidated financial statements based on the guidance in K-IFRS 1012. The income tax asset is recognized if a tax refund is probable for taxes paid and levied by the tax authority. However, additional tax and additional dues on tax refund are recognized in accordance with K-IFRS 1037.

3.22 Earnings per share

The Group calculates basic earnings per share amounts and diluted earnings per share amounts for profit or loss attributable to ordinary equity holders of the parent entity and presents them in the statement of comprehensive income. Basic earnings per share is calculated by dividing profit or loss attributable to ordinary equity holders of the Parent Company by the weighted average number of ordinary shares outstanding during the period. For the purpose of calculating diluted earnings per share, the Group adjusts profit or loss attributable to ordinary equity holders of the Parent Company and the weighted average number of shares outstanding for the effects of all dilutive potential ordinary shares including convertible bonds and share options.

37

KB Financial Group Inc. and Subsidiaries

Notes to Consolidated Financial Statements

December 31, 2014 and 2013

3.23 Operating segments

Operating segments are components of the Group where separate financial information is available and is evaluated regularly by the chief operating decision maker in deciding how to allocate resources and in assessing performance.

Segment information includes items which are directly attributable and reasonably allocated to the segment.

4. Financial risk management

4.1 Summary

4.1.1 Overview of Financial Risk Management Policy

The financial risks that the Group is exposed to are credit risk, market risk, liquidity risk, operational risk and others.

The note regarding financial risk management provides information about the risks that the Group is exposed to, including the objectives, policies and processes for managing the risks, the methods used to measure the risks, and capital adequacy. Additional quantitative information is disclosed throughout the consolidated financial statements.

The Group’s risk management system focuses on increasing transparency, developing the risk management environment, preventing transmission of risk to other related subsidiaries, and the preemptive response to risk due to rapid changes in the financial environment to support the Group’s long-term strategy and business decisions efficiently. Credit risk, market risk, liquidity risk, and operational risk have been recognized as the Group’s key risks. These risks are measured in Economic Capital or VaR (Value at Risk) and are managed using a statistical method.

4.1.2 Risk Management Organization

Risk Management Committee

The Risk Management Committee establishes risk management strategies in accordance with the directives of the Board of Directors and determines the Group’s target risk appetite, approves significant risk matters and reviews the level of risks that the Group is exposed to and the appropriateness of the Group’s risk management operations as an ultimate decision-making authority.

38

KB Financial Group Inc. and Subsidiaries

Notes to Consolidated Financial Statements

December 31, 2014 and 2013

Risk Management Council

The Risk Management Council is a consultative group which reviews and makes decisions on matters delegated by the Risk Management Committee and discusses the detailed issues relating to the Group’s risk management.

Risk Management Department

The Risk Management Department is responsible for monitoring and managing the Group’s economic capital limit and managing specific policies, procedures and work processes relating to the Group’s risk management.

4.2 Credit Risk

4.2.1 Overview of Credit Risk

Credit risk is the risk of possible losses in an asset portfolio in the event of a counterparty’s default, breach of contract and deterioration in the credit quality of the counterparty. For risk management reporting purposes, the individual borrower’s default risk, country risk, specific risks and other credit risk exposure components are considered as a whole.

4.2.2 Credit Risk Management

The Group measures expected losses and economic capital on assets that are subject to credit risk management whether on- or off-balance sheet and uses expected losses and economic capital as a management indicator. The Group manages credit risk by allocating credit risk economic capital limits.

In addition, the Group controls the credit concentration risk exposure by applying and managing total exposure limits to prevent an excessive risk concentration to each industry and borrower.

The Group has organized a credit risk management team that focuses on credit risk management in accordance with the Group’s credit risk management policy. For Kookmin Bank, which is the main subsidiary, its loan analysis department which is independent from the sales department is responsible for loan policy, loan limit, loan review, credit evaluation, restructuring and subsequent events. Kookmin Bank’s risk management group is also responsible for planning risk management policy, applying limits of credit lines, measuring the credit risk economic capital, adjusting credit limits, reviewing credit and verifying credit evaluation models.

39

KB Financial Group Inc. and Subsidiaries

Notes to Consolidated Financial Statements

December 31, 2014 and 2013

4.2.3 Maximum exposure to credit risk

The Group’s maximum exposures of financial instruments, excluding equity securities, to credit risk without consideration of collateral values as of December 31, 2014 and 2013, are as follows:

4.2.4 Credit risk of loans

The Group maintains an allowance for loan losses associated with credit risk on loans to manage its credit risk.

The Group recognizes an impairment loss on loans carried at amortized cost when there is any objective indication of impairment. Under K-IFRS, an impairment loss is based on losses incurred at the end of the reporting year. Therefore, the Group does not recognize losses expected as a result of future events. The Group measures inherent incurred losses on loans and presents them in the financial statements through the use of an allowance account which is offset against the related loans.

40

KB Financial Group Inc. and Subsidiaries

Notes to Consolidated Financial Statements

December 31, 2014 and 2013

Loans are classified as follows:

Credit quality of loans that are neither past due nor impaired are as follows:

41

KB Financial Group Inc. and Subsidiaries

Notes to Consolidated Financial Statements

December 31, 2014 and 2013

Credit quality of loans graded according to internal credit ratings are as follows:

Loans that are past due but not impaired are as follows:

42

KB Financial Group Inc. and Subsidiaries

Notes to Consolidated Financial Statements

December 31, 2014 and 2013

Impaired loans are as follows: