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 2016

Commission File Number: 000-53445

KB Financial Group Inc.

(Translation of registrant’s name into English)

84, 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.

Agenda for Annual General Meeting of Shareholders for Fiscal Year 2015

Agendum 1. Approval of Financial Statements and the Proposed Dividend Payment for Fiscal Year 2015

Please find the following Exhibits attached to this document:

Exhibit Index

For the proposed dividend payment amount for fiscal year 2015, please refer to Separate Statements of Appropriation of Retained Earnings for the years ended December 31, 2015 and 2014 included in Exhibit 99.1 attached hereto.

Agendum 2. Approval of Amendments to the Articles of Incorporation

The following table sets forth a summary of the proposed amendments to the Articles of Incorporation:

Agendum 3. Appointment of Directors

Nominees for Non-executive Directors^{(1) (2)(5)}

Note: (1) None of the nominees has (i) engaged in any transaction with KB Financial Group Inc. in the past three years or (ii) any relationship with the largest shareholder of KB Financial Group Inc.

(2) Pursuant to Article 18 of the Financial Corporate Governance Code, details regarding the recommendation of non-executive director candidates have been posted on our website as well as the Korea Federation of Banks’s website.

(3) For the period of March 27, 2015 to December 31, 2015

(4) Mr. Michael Byungnam Lee was eligible to attend seven (7) Board of Directors meetings, of which he missed two (2), resulting in an attendance rate of 71.4%. Mr. Lee was not able to participate in the Board of Directors meetings on December 11, 2015 and December 21, 2015 due to a private family emergency (death of a family member).

(5) All of the nominees were initially appointed as non-executive directors on March 26, 2015.

Agendum 4. Appointment of Members of the Audit Committee, Who are Non-executive Directors

Nominees for Members of the Audit Committee Who are Non-executive Directors⁽¹⁾

Note: (1) None of the nominees has (i) engaged in any transaction with KB Financial Group Inc. in the past three years or (ii) any relationship with the largest shareholder of KB Financial Group Inc.

Agendum 5. Approval of the Aggregate Remuneration Limit for Directors

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.

Separate Statements of Financial Position

December 31, 2015 and 2014

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

1

KB Financial Group Inc.

Separate Statements of Comprehensive Income

Years Ended December 31, 2015 and 2014

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

2

KB Financial Group Inc.

Separate Statements of Changes in Equity

Years Ended December 31, 2015 and 2014

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

3

KB Financial Group Inc.

Separate Statements of Cash Flows

Years Ended December 31, 2015 and 2014

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

4

KB Financial Group Inc.

Notes to Separate Financial Statements

December 31, 2015 and 2014

1. The Company

KB Financial Group Inc. (the “Company”), in accordance with Financial Holding Companies Act, was established on September 29, 2008, through stock transfers with the former shareholders of Kookmin Bank, KB Investment & Securities Co., Ltd., KB Asset Management Co., Ltd., KB Real Estate Trust Co., Ltd., KB Investment Co., Ltd., KB Futures Co., Ltd., KB Credit Information Co., Ltd., and KB Data Systems Co., Ltd. in order to provide management services and financing to associated companies. The headquarters are located at 84, Namdaemunro, Jung-gu, Seoul. The Company’s paid-in capital as of December 31, 2015, is ￦1,931,758 million. 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 Company 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 March 2014, the Company acquired Woori Financial Co., Ltd. and changed the name to KB Capital Co., Ltd. In addition, the Company included LIG Insurance Co., Ltd. as an associate and changed the name to KB Insurance Co., Ltd. in June 2015.

The Company is authorized to issue up to 1 billion shares. The 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 Korean IFRS

The Company 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 (“Korean IFRS”). The accompanying separate 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 Company’s financial position, financial performance or cash flows, is not presented in the accompanying separate financial statements.

The Company’s separate financial statements have been prepared in accordance with Korean IFRS. Korean 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 separate financial statements requires the use of certain critical accounting estimates. It also requires management to exercise judgment in the process of applying the Company’s accounting policies. The areas involving a higher degree of judgment or complexity, or areas where assumptions and estimates are significant to the separate financial statements are disclosed in Note 2.4.

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KB Financial Group Inc.

Notes to Separate Financial Statements

December 31, 2015 and 2014

The separate financial statements were prepared in accordance with Korean IFRS 1027, Separate Financial Statements.

The Company’s separate financial statements as of and for the year ended December 31, 2015, have been prepared in accordance with Korean IFRS.

The Company newly applied the following amended and enacted standards and interpretations for the annual period beginning on January 1, 2015, and application of these amendment and improvements does not have a material impact on its separate financial statements.

The Company expects that the following amended standards and interpretations issued but not effective for the financial year beginning January 1, 2015, and not early adopted would not have a material impact on its financial statements.

Also, new standards and interpretations issued but not effective for the financial year beginning January 1, 2015, and not early adopted are as follows:

The new Standard issued in December 2015 regarding financial instruments replaces Korean IFRS 1039, Financial Instruments: Recognition and Measurement, Korean IFRS 1109, Financial Instruments, requires financial assets to be classified and measured on the basis of the holder’s business model and the instrument’s contractual cash flow characteristics. The Standard requires a financial instrument to be classified and measured at amortized cost, fair value through other comprehensive income, or fair value through profit or loss, and provides guidance on accounting for related gains and losses. The impairment model is changed into an expected credit loss model, and changes in those expected credit losses are recognized in profit or loss. This amendment has been partially reflected, which is consistent with the risk management of companies for hedge accounting. The new Standard is effective for the financial year initially beginning on or after January 1, 2018, but early adoption is allowed. Early adoption of only the requirements related to financial liabilities designated at fair value through profit or loss is also permitted. The Company is in the process of determining the effects resulting from the adoption of the new Standard.

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KB Financial Group Inc.

Notes to Separate Financial Statements

December 31, 2015 and 2014

The new Standard for the recognition of revenue issued in December 2015 will replace Korean IFRS1018, Revenue, Korean IFRS 1011, Construction Contracts, and related Interpretations. Korean IFRS 1115, Revenue from Contracts with Customers, will replace the risk-and-reward model under the current standards and is based on the principle that revenue is recognized when control of goods or services transfer to the customer by applying the five-step process. Key changes to current practices include guidance on separate recognition of distinct goods or services in any bundled arrangement, constraint on recognizing variable consideration, criteria on recognizing revenue over time, and increased disclosures. The new Standard is effective for annual reporting beginning on or after January 1, 2018, but early application is permitted. The Company is in the process of determining the effects resulting from the adoption of the new Standard.

2.2 Measurement Basis

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

2.3 Functional and Presentation Currency

Items included in the separate financial statements of the Company are measured using the currency of the primary economic environment in which the Company operates (the functional currency). The separate financial statements are presented in Korean won, which is the Company’s functional and presentation currency.

2.4 Significant Estimates

The preparation of separate 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 incomes (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.

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KB Financial Group Inc.

Notes to Separate Financial Statements

December 31, 2015 and 2014

The significant accounting estimates and assumptions are consistently applied to all periods presented, except for the assumptions for income tax expense and fair value of financial instruments.

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 financial statements are as follows:

2.4.1 Income taxes

The Company is operating in numerous countries and the income generated from these operations is subject to income taxes based on tax laws and interpretations of tax authorities in numerous jurisdictions. There are many transactions and calculations for which the ultimate tax determination is uncertain.

If certain portion of the taxable income is not used for investments, increase in wages, or dividends in accordance with the Tax System for Recirculation of Corporate Income, the Company is liable to pay additional income tax calculated based on the tax laws. The new tax system is effective for three years from 2015. Accordingly, the measurement of current and deferred income tax is affected by the tax effects from the new system. As the Company’s income tax is dependent on the investments, increase in wages and dividends, there exists uncertainty with regard to measuring the final tax effects.

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 (Note 5).

2.4.3 Net defined benefit liability

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 16).

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KB Financial Group Inc.

Notes to Separate Financial Statements

December 31, 2015 and 2014

3. Significant Accounting Policies

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

3.1 Cash and cash equivalents

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

3.2 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 Company as at fair value through profit or loss upon initial recognition.

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

The Company 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.

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KB Financial Group Inc.

Notes to Separate Financial Statements

December 31, 2015 and 2014

3.3 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 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 provision for credit losses.

Impairment loss on loans reduces the carrying amount of the asset through use of an allowances account, and when a loan becomes uncollectable, it is written off against the related allowances 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 an allowances account. The amount of the reversal is recognized in profit or loss.

3.4 Investments in subsidiaries

Investments in subsidiaries are accounted at cost method in accordance with Korean IFRS 1027. The Company determines at each reporting date whether there is any objective evidence that the investments in the subsidiaries are impaired. If this is the case, the Company calculates the amount of impairment as the difference between the recoverable amount of the subsidiaries and its carrying value.

3.5 Property and equipment

Recognition and Measurement

All property and equipment that qualify for recognition as an asset are measured at its 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.

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KB Financial Group Inc.

Notes to Separate Financial Statements

December 31, 2015 and 2014

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.

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 Company. The depreciable amount of an asset is determined after deducting its residual value.

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:

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.

3.6 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 membership right, are amortized using the straight-line method with no residual value over their estimated useful economic life since the asset is available for use.

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 Company 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.

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KB Financial Group Inc.

Notes to Separate Financial Statements

December 31, 2015 and 2014

3.7 Impairment of non-financial assets

The Company 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 Company estimates the recoverable amount of the asset.

The recoverable amount is estimated for the individual asset. If it is not possible to estimate the recoverable amount of the individual asset, the Company 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, and only 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.

3.8 Provisions

Provisions are recognized when the Company 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 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.

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KB Financial Group Inc.

Notes to Separate Financial Statements

December 31, 2015 and 2014

3.9 Equity instrument issued by the company

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.

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

3.10 Revenue recognition

Revenue shall be recognized when all the following conditions have been satisfied:

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.

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 Company estimates cash flows considering all contractual terms of the financial instrument but does not consider future credit losses.

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.

Fee and commission income

Fee and commission income is recognized on an accrual basis in accordance with the substance of transaction.

Dividend income

Dividend income is recognized when the shareholder’s right to receive payment is established.

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KB Financial Group Inc.

Notes to Separate Financial Statements

December 31, 2015 and 2014

3.11 Employee compensation and benefits

Post-employment benefit: Defined benefit plans

All post-employment benefit, other than defined contribution plans, is 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.

When the fair value of plan assets deducted from the total of the present value of the defined benefit obligation results in an asset, it is recognized to the extent of any cumulative unrecognized past service cost and 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 arises when the Company introduces a defined benefit plan that attributes to past service or changes the benefits payable for past service under an existing defined benefit plan. Such past service cost is recognized immediately in profit or loss.

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 Company 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.

Share-based payment

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

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KB Financial Group Inc.

Notes to Separate Financial Statements

December 31, 2015 and 2014

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

The Company measures the services acquired and the liability incurred at fair value. Until the liability is settled, the Company 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.

Termination benefits

Termination benefits are employee benefits provided in exchange for the termination of an employee’s employment as a result of either (a) the Company decision to terminate an employee’s employment before the normal retirement date; or (b) an employee’s decision to accept an offer of benefits in exchange for the termination of employment. The Company recognizes liabilities and expenses for termination benefits at the earlier of the following dates: when the Company can no longer withdraw the offer of those benefits and when the Company recognizes costs for a restructuring that is within the scope of Korean 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 which are not expressed to be settled wholly before 12 months after the end of the reporting period are discounted to present values.

3.12 Income tax expenses

Income tax expense (tax benefit) comprises current tax expense (current tax benefit) and deferred income tax expense (deferred income tax benefit). 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 event which is recognized either in other comprehensive income or directly in equity and (b) a business combination.

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 expenses 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.

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KB Financial Group Inc.

Notes to Separate Financial Statements

December 31, 2015 and 2014

The Company offsets current income tax assets and current income tax liabilities if, and only if, the Company (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.

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.

The carrying amount of a deferred income tax asset is reviewed at the end of each reporting period. The Company 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 be applied 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 Company expects, at the end of the reporting period, to recover or settle the carrying amount of its assets and liabilities.

The Company offsets deferred income tax assets and deferred income tax liabilities when the Company 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.

Uncertain tax positions

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

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KB Financial Group Inc.

Notes to Separate Financial Statements

December 31, 2015 and 2014

3.13 Earnings per share

The Company calculates basic earnings per share amounts and diluted earnings per share amounts for profit or loss attributable to ordinary equity holders 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 by the weighted average number of ordinary shares outstanding during the period. For the purpose of calculating diluted earnings per share, the Company adjusts profit or loss attributable to ordinary equity holders and the weighted average number of shares outstanding for the effects of all dilutive potential ordinary shares including convertible bond and share option.

3.14 Operating segments

The Company is composed of a single operating segment. Therefore, disclosures on segments are omitted in accordance with Korean IFRS 1108, Operating Segments.

4. Financial Risk Management

4.1 Summary

4.1.1 Overview of Financial Risk Management Policy

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

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

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

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KB Financial Group Inc.

Notes to Separate Financial Statements

December 31, 2015 and 2014

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 Company’s target risk appetite, approves significant risk matters and reviews the level of risks that the Company is exposed to and the appropriateness of the Company’s risk management operations as an ultimate decision-making authority.

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 Company’s risk management.

Risk Management Division

The Risk Management Division is responsible for managing work processes, procedures and detailed policies.

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 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 is considered.

4.2.2 Credit Risk Management

The Company measures expected losses on assets that are subject to credit risk management and uses it as a management indicator.

4.2.3 Maximum Exposure to Credit Risk

The Company’s maximum exposures of financial instruments to credit risk without consideration of collateral values as of December 31, 2015 and 2014, are as follows:

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KB Financial Group Inc.

Notes to Separate Financial Statements

December 31, 2015 and 2014

4.2.4 Credit Risk of Loans

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

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

Loans are classified as follows:

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

Credit quality of loans graded according to the probability of default are as follows:

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KB Financial Group Inc.

Notes to Separate Financial Statements

December 31, 2015 and 2014

4.2.5 Credit Risk Concentration Analysis

The details of the Company’s loans by country, as of December 31, 2015 and 2014, are as follows:

The details of the Company’s corporate loans by industry as of December 31, 2015 and 2014, are as follows:

4.3 Liquidity Risk

4.3.1 Overview of Liquidity Risk

Liquidity risk is the risk of insolvency or loss due to a disparity between the inflow and outflow of funds, unexpected outflow of funds, and obtaining funds at a high price or disposing of securities at an unfavorable price due to lack of available funds. The Company manages its liquidity risk through analysis of the contractual maturity of all financial assets and liabilities. The Company discloses them by maturity group: On demand, up to one month, between over one month and three months, between over three months and 12 months, between over one year and five years, and over five years.

Cash flows disclosed for the maturity analysis are undiscounted contractual principal and interest to be received (paid) and, thus, differs from the amount in the financial statements which are based on the present value of expected cash flows in some cases. The amount of interest to be received or paid on floating rate assets and liabilities is measured on the assumption that the current interest rate would be the same through maturity.

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KB Financial Group Inc.

Notes to Separate Financial Statements

December 31, 2015 and 2014

4.3.2 Liquidity Risk Management

The liquidity risk is managed by liquidity management principles and related guidelines which are applied to the risk management policies and procedures that address all the possible risks that arise from the overall business of the Company.

4.3.3 Analysis of Remaining Contractual Maturity of Financial Assets and Liabilities

The remaining contractual maturity of financial assets and liabilities as of December 31, 2015 and 2014, are as follows:

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KB Financial Group Inc.

Notes to Separate Financial Statements

December 31, 2015 and 2014

4.4 Market Risk

4.4.1 Concept

Market risk is the risk of possible losses which arise from changes in market factors, such as interest rate, stock price, foreign exchange rate and other market. The most significant risks are interest rate risks.

4.4.2 Interest Rate Risk

Definition of interest rate risk

Interest rate risk is the risk that the fair value or future cash flows arising from interest income and interest cost will fluctuate because of changes in interest.

Observation method and management indicator on interest rate risk

The main objective of interest rate risk management is to protect asset values against interest rate fluctuations. The Company manages the risk through measurement and management of interest rate VaR.

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KB Financial Group Inc.

Notes to Separate Financial Statements

December 31, 2015 and 2014

Interest Rate VaR

Interest rate VaR is the maximum possible loss due to interest rate risk at a 99.94% confidence level. The measurement results of risk as of December 31, 2015 and 2014, are as follows:

4.5 Capital adequacy

The Company complies with the capital adequacy standard established by the Financial Services Commission. The capital adequacy standard is based on Basel III published by Basel Committee on Banking Supervision in Bank for International Settlements in June 2011, and was implemented in Korea in December 2013. The Group is required to maintain a minimum Common Equity Tier 1 ratio of at least 4.5%(2014: 4.0%), a minimum Tier 1 ratio of 6.0%(2014: 5.5%) and a minimum Total Regulatory Capital ratio of 8.0%(2014: 8.0%) as of December 31, 2015.

The Group’s equity capital is classified into three categories in accordance with the Supervisory Regulations and Detailed Supervisory Regulations on Financial Holding Companies:

Risk weighted asset means the inherent risks in the total assets held by the Group. The Group calculates risk weighted asset by each risk (credit risk, market risk, and operational risk) based on the Supervisory Regulations and Detailed Supervisory Regulations on Financial Holding Companies and uses it for BIS ratio calculation.

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KB Financial Group Inc.

Notes to Separate Financial Statements

December 31, 2015 and 2014

The Group assesses and monitors its adequacy of capital by using the internal assessment and management policy of the capital adequacy. The assessment of the capital adequacy is conducted by comparing available capital (actual amount of available capital) and economic capital (amount of capital enough to cover all significant risks under target credit rate set by the Group). The Group monitors the soundness of finance and provides risk adjusted basis for performance review using the assessment of the capital adequacy.

Economic Capital is the amount of capital to prevent the inability of payment due to unexpected loss in the future. The Group measures, allocates and monitors economic capital by risk type and subsidiaries.

The Risk Management Council of the Company determines the Group’s risk appetite and allocates economic capital by risk type and subsidiary. Each subsidiary efficiently operates its capital within a range of allocated economic capital. The Risk Management Department of the Company monitors the limit on economic capital and reports the results to management and the Risk Management Council. The Group maintains the adequacy of capital through proactive review and approval of the Risk Management Committee when the economic capital is expected to exceed the limits due to new business or business expansion. The Group and its subsidiaries complied with external capital adequacy requirements as of December 31, 2015 and 2014. The Group complied with the capital adequacy standard as of December 31, 2015 and 2014.

The details of the Group’s capital adequacy ratios based on Basel III, as of December 31, 2015 and 2014, are as follows:

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KB Financial Group Inc.

Notes to Separate Financial Statements

December 31, 2015 and 2014

5. Financial Assets and Financial Liabilities

5.1 Classification and Fair value of Financial Instruments

The carrying amounts and fair value of financial assets and liabilities by category as of December 31, 2015 and 2014, are as follows:

Fair value is the amount for which an asset could be exchanged, or a liability could be settled, between knowledgeable, willing parties in an arm’s length transaction. For each class of financial assets and financial liabilities, the Company discloses the fair value of that class of assets and liabilities in a way that permits it to be compared with its carrying amount at the end of each reporting period. The best evidence of fair value of financial instruments is quoted price in an active market.

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KB Financial Group Inc.

Notes to Separate Financial Statements

December 31, 2015 and 2014

Methods of determining fair value of financial instruments are as follows:

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KB Financial Group Inc.

Notes to Separate Financial Statements

December 31, 2015 and 2014

Fair value hierarchy

The Company believes that valuation methods used for measuring the fair values of financial instruments are reasonable and that the fair values recognized in the statements of financial position are appropriate. However, the fair values of the financial instruments recognized in the statements of financial position may be different if other valuation methods or assumptions are used. Additionally, as there is a variety of valuation techniques and assumptions used in measuring fair value, it may be difficult to reasonably compare the fair value with that of other financial institutions.

The Company classifies and discloses fair value of the financial instruments into the following three-level hierarchy:

Level 1: The fair values are based on quoted prices (unadjusted) in active markets for identical assets or liabilities that the entity can access at the measurement date.

Level 2: The fair values are based on inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly.

Level 3: The fair values are based on unobservable inputs for the asset or liability.

The level in the fair value hierarchy within which the fair value measurement is categorized in its entirety shall be determined on the basis of the lowest level input that is significant to the fair value measurement in its entirety. For this purpose, the significance of an input is assessed against the fair value measurement in its entirety. If a fair value measurement uses observable inputs that require significant adjustment based on unobservable inputs, that measurement is a Level 3 measurement.

Fair value hierarchy of financial assets and liabilities measured at fair value in the statement of financial position

The fair value hierarchy of financial assets measured at fair value in the statement of financial position as of December 31, 2015, is as follows:

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KB Financial Group Inc.

Notes to Separate Financial Statements

December 31, 2015 and 2014

Fair value hierarchy of financial assets and liabilities whose the fair values are disclosed

The fair value hierarchy of financial assets and liabilities whose fair values are disclosed as of December 31, 2015 and 2014, is as follows: