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Summary of significant accounting policies (Policies) | 12 Months Ended
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Mar. 31, 2021
Principles of consolidation | a. Principles of consolidation The consolidated financial statements include the accounts of HDFC Bank Limited and its subsidiaries. The Bank consolidates subsidiaries in which, directly or indirectly, it holds more than 50% of the voting rights and/or has control. Entities where the Bank holds 20% to 50% of the voting rights and/or has the ability to exercise significant influence are accounted for under the equity method. These investments are included in other assets and the Bank’s proportionate share of income or loss is included in Non-interest revenue, other. The Bank consolidates Variable Interest Entities (VIEs) where the Bank is determined to be the primary beneficiary (see note 2j). All significant inter-company balances and transactions are eliminated on consolidation.
Basis of presentation | b. Basis of presentation These financial statements have been prepared in accordance with the accounting principles generally accepted in the United States of America (“US GAAP”). US GAAP differs in certain material respects from accounting principles generally accepted in India, the requirements of India’s Banking Regulation Act 1949 and related regulations issued by the Reserve Bank of India (“RBI”) (collectively “Indian GAAP”), which form the basis of the statutory general purpose financial statements of the Bank in India. Principal differences, insofar as they relate to the Bank, include: determination of the allowance for credit losses, classification and valuation of investments, accounting for deferred taxes, stock-based compensation, loan origination fees, derivative financial instruments, business combination, lease accounting and the presentation format and disclosures of the financial statements and related notes.
Use of estimates | c. Use of estimates The preparation of financial statements in conformity with US GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of these financial statements and the reported amounts of revenues and expenses for the years presented. Actual results could differ from these estimates. Material estimates included in these financial statements that are susceptible to change include the allowance for credit losses, the valuation of unquoted investments, impairment in securities, valuation of derivatives, stock-based compensation, unrecognized tax benefits, valuation of lease liabilities and impairment assessment of goodwill.
Cash and cash equivalents | d. Cash and due from banks, and restricted cash Cash and due from banks comprise of cash and deposit with banks that have original maturities of 90 days or less. The Bank has captioned cash and cash equivalent as “cash and due from banks, and restricted cash” on the consolidated balance sheets. Cash and due from banks includes restricted cash (see note 3).
Customer acquisition costs | e. Customer acquisition costs Customer acquisition costs principally consist of commissions paid to third party referral agents who source retail loans and such costs are deferred and amortized as a yield adjustment over the life of the loans. Advertising and marketing expenses incurred to solicit new business are expensed as incurred.
Investments in securities | f. Investments in securities Investments consist of securities purchased as part of the Bank’s treasury operations, such as government securities and other debt securities, and investments purchased as part of the Bank’s wholesale banking operations, such as credit substitute securities issued by the Bank’s wholesale banking customers . Credit substitute securities typically consist of commercial paper and debentures issued by the same customers with whom the Bank has a lending relationship in its wholesale banking business. Investment decisions for credit substitute securities are subject to the same credit approval processes as for loans, and the Bank bears the same customer credit risk as it does for loans extended to those customers. Additionally, the yield and maturity terms are generally directly negotiated by the Bank with the issuer. As the Bank’s exposures to such securities are similar to its exposures on its loan portfolio, additional disclosures have been provided on impairment status in note 7 and on concentrations of credit risk in note 10. All other securities including mortgage and asset-backed securities are actively managed as part of the Bank’s treasury operations. The issuers of such securities are either government, public financial institutions or private issuers. These investments are typically purchased from the market, and debt securities are generally publicly rated. Securities that are held principally for resale in the near term are classified as held for trading (“HFT”) and are carried at fair value, with changes in fair value recorded in net income. Debt securities that management has the positive intent and ability to hold to maturity are classified as held to maturity (“HTM”) and are carried at amortized cost. All debt securities that are not classified as HTM or HFT are classified as available for sale debt securities (“AFS”) and are carried at fair value. Unrealized gains and losses on such securities, net of applicable taxes, are reported in accumulated other comprehensive income (loss), a separate component of shareholders’ equity. Up to March 31, 2018, equity securities with readily determinable fair values that were not classified as HFT were classified as available for sale and were carried at fair value. Unrealized gains and losses on such securities, net of applicable taxes, were reported in accumulated other comprehensive income (loss), a separate component of shareholders’ equity. Dividend income on such securities was included in Interest and dividend revenue- available for sale debt securities. Non-marketable equity securities were carried at cost. Equity securities are classified under other assets. Marketable securities are measured at fair value, change in fair value recorded in earnings. Non- marketable equity securities under the measurement alternative are carried at cost plus or minus changes resulting from observable price changes in orderly transactions for the identical or a similar investment of the same issuer and impairment, if any. The Bank’s review for impairment for equity method, cost method and measurement alternative securities typically includes an analysis of the facts and circumstances of each security, the intent or requirement to sell the security, and the expectations of cash flows. Fair values are based on market quotations where a market quotation is available or otherwise based on present values at current interest rates for such investments. Transfers between categories are recorded at fair value on the date of the transfer.
Impairment of securities | g. Impairment of debt securities Up to March 31, 2020, declines in the fair values of held to maturity and available for sale debt securities below their carrying value that were other than temporary were reflected in net income as other than temporary impairment losses, based on management’s best estimate of the fair value of the investment. The Bank conducted a review each year to identify other than temporary declines based on an evaluation of all significant factors. The Bank’s review of impairment generally entailed identification and evaluation of investments that had indications of possible impairment, analysis of evidential matter, including an evaluation of factors or triggers that would or could cause individual investments to have other than temporary impairment and documentation of the results of these analysis, as required under business policies. Estimates of any declines in the fair values of credit substitute securities that were other than temporary were measured on a case-by-case basis together with loans to those customers. The Bank did not recognize an impairment for debt securities if the cause of the decline was related solely to interest rate increase and the Bank did not intend to sell the security and it was not more likely than not that the Bank would be required to sell the security before recovery of its amortized cost basis. The Bank adopted ASU 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments (CECL) with effect from April 1, 2020. The Bank conducts review of all available-for-sale securities with fair value below their carrying value or with zero loss expectation. The Bank evaluates whether the decline in fair value has resulted from credit losses or other factors. In making this assessment, management considers the extent to which fair value is less than amortized cost, any changes to the rating of the security by a rating agency, and adverse conditions specifically related to the security, among other factors. If the assessment indicates that a credit loss exists, the present value of cash flows to be collected from the security are compared to the amortized cost basis of the security. If the present value of cash flows expected to be collected is less than the amortized cost basis, a credit loss exists and an allowance for credit losses is recorded through a provision for credit loss expense, limited by the amount that fair value is less than the amortized cost basis. Any impairment that has not been recorded through an allowance for credit losses is recognized in other comprehensive income. The allowance is increased or decreased if credit conditions subsequently worsen or improve. Reversal of credit losses are recognized in earnings. The Bank recognizes the entire difference between amortized cost basis and fair value in earnings for impaired AFS debt securities that the Bank has an intent to sell or for which the Bank believes it will more-likely-than-not be required to sell prior to recovery of the amortized cost basis. The Bank applied ASC 326 to AFS debt securities when Other Than Temporary Impairment has been recognized before the adoption. Amortized cost of a security, including the security’s effective interest rate where an other-than-temporary impairment had been recognized up to March 31, 2020 has remained unchanged. Amounts previously recognized in accumulated other comprehensive income as of the adoption date that relate to improvements in cash flows continue to be accreted to interest income over the remaining life of the security on a level-yield basis. Recoveries of amounts previously written off relating to improvements in cash flows after the date of adoption are recorded to income in the period received. The Bank does not record an allowance on accrued interest receivables on the balance sheet due to its policy to reverse interest income on Debt securities in a timely manner in line with the Bank’s non-accrual and past due policies and also on any Debt security classified as non-performing. The Bank does not purchase debt securities with credit deterioration.
Loans | h. Loans The Bank grants retail and wholesale loans to customers. Loans that management has the intent and ability to hold for the foreseeable future or until maturity or payoff are reported at their outstanding unpaid principal balances adjusted for an allowance for credit losses. Loan origination fees and certain direct origination costs are deferred and recognized as adjustments to net income over the lives of the related loans. Interest is accrued on the unpaid principal balance and is included in interest income. Loans are generally placed on “non-accrual” status when interest or principal payments are three months past due or if they are considered non-performing , at which time no further interest is accrued and any unrealized interest recognized in the income statement is reversed. Interest income and principal payments on loans placed on non-accrual status is recognized when received. Loans are returned to accrual status when all principal and interest amounts contractually due are brought current, and future payments are reasonably assured.
Allowance for credit losses | i. Allowance for credit losses The Bank provides an allowance for credit losses based on management’s best estimate of losses inherent in the loan portfolio which includes troubled debt restructuring. The allowance for credit losses consists of allowances for retail loans and wholesale loans. Upon adoption of ASC 326, the Bank revised its accounting policy for Allowance for credit losses as detailed below: Retail Up to March 31, 2020 the Bank’s retail loan loss allowance consisted of specific allowance and allowance for loans collectively evaluated for impairment (termed as “unallocated allowance”). The Bank established a specific allowance on the retail loan portfolio based on factors such as the nature of the product, delinquency levels or the number of days the loan is past due and the nature of the security available. Additionally, the Bank monitored loan to value ratios for loan against securities. The loans were charged off against allowances typically when the account became 150 to 1,083 days past due depending on the type of loan. The defined delinquency levels at which major loan types are charged off were 150 days past due for personal loans, credit card receivables, auto loans, commercial vehicle and construction equipment finance, 720 days past due for housing loans and on a customer by customer basis in respect of retail business banking when management believed that any future cash flows from these loans were remote including realization of collateral, if applicable, and where any restructuring or any other settlement arrangements were not feasible. Subsequent recoveries, if any, against write-off cases, were adjusted to provision for credit losses in the consolidated statement of income. The Bank also recorded unallocated allowances for its retail loans by product type. The Bank’s retail loan portfolio is comprised of groups of large numbers of small value homogeneous loans. The Bank established an unallocated allowance for loans in each product group based on its estimate of the overall portfolio quality, asset growth, economic conditions and other risk factors. The Bank estimated its unallocated allowance for retail loans based on its probability of default and loss given default, determined for the respective risk pools . Wholesale Up to March 31, 2020, the allowance for wholesale loans consisted of specific and unallocated components. The allowance for such credit losses was evaluated on a regular basis by management and was based upon management’s view of the probability of recovery of loans in light of historical experience, the nature and volume of the loan portfolio, adverse situations that may affect the borrower’s ability to repay, the estimated value of any underlying collateral, factors affecting the industry which the loan exposure relates to and prevailing economic conditions. This evaluation was inherently subjective as it required estimates that are susceptible to significant revision as more information became available. Loans were charged off against the allowance when management believes that the loan balance may not be recovered. Subsequent recoveries, if any, against write-off cases, were adjusted to provision for credit losses in the consolidated statement of income. The Bank grades its wholesale loan accounts considering both qualitative and quantitative criteria. Wholesale loans are considered impaired when, based on current information and events, it is probable that the Bank will be unable to collect scheduled payments of principal or interest when due according to the contractual terms of the loan agreement. Factors considered by management in determining impairment include payment status, the financial condition of the borrower, the value of collateral held, and the probability of collecting scheduled principal and interest payments when due. The Bank established specific allowances for each impaired wholesale loan customer, in the aggregate, for all facilities, including term loans, cash credits, bills discounted and lease finance, based on either the present value of expected future cash flows discounted at the loan’s effective interest rate or the net realizable value of the collateral if the loan is collateral dependent. Collateral values are generally based on appraisals from internal and external valuation sources. Wholesale loans that experienced insignificant payment delays and payment shortfalls were generally not classified as impaired but were placed on a surveillance watch list and closely monitored for deterioration. Management determines the significance of payment delays and payment shortfalls on a case-by-case basis, taking into consideration all of the circumstances surrounding the loan and the borrower, including the length of the delay, the reasons for the delay, the borrower’s prior payment record, market information, and the amount of the shortfall in relation to the principal and interest owed. These factors were considered by the Bank for selection of loans for credit reviews and assessment of impairment. The Bank also established an unallocated allowance for wholesale standard loans based on the internal rating grades assigned, and the probability of default associated with internal rating grade pools and the loss given default. Effective April 1, 2020, the Bank adopted the CECL accounting guidance. The adoption of this guidance established a single allowance framework for all financial assets measured at amortized cost and certain off-balance sheet credit exposures including undrawn commitments not cancellable, Investments including AFS Securities and other financial assets measured at amortized cost. This framework requires that management’s estimate reflects credit losses over the instrument’s remaining expected life and considers expected future changes in macroeconomic conditions. The Banks allowance for credit losses comprises:
| • |  | the allowance for loan losses, which covers the Bank’s loan portfolios and is presented separately on the balance sheet in Loans,
| • |  | the allowance for lending-related commitments, which is recognized on the balance sheet in Accrued expenses and other liabilities,
| • |  | the allowance for credit losses on investment securities, which covers the Bank’s AFS debt securities and is recognized on the balance sheet in Investments available for sale debt securities on the balance sheet and,
| • |  | the allowance for credit losses on other financial assets measured at amortized cost, and other off-balance sheet credit exposures, which is recognized on the balance sheet in Accrued expenses and other liabilities.
All changes in the allowance for credit losses is recognized in the income statement. Determining the appropriateness of the allowance for credit losses is complex and requires significant judgment by management about the effect of matters that are inherently uncertain. Subsequent evaluations of credit exposures, considering the macroeconomic conditions, forecasts and other factors then prevailing, may result in significant changes in the allowance for credit losses in future periods. The Bank’s policies used to determine its allowance for credit losses and its allowance for lending-related commitments are described in the following paragraphs. The Bank’s portfolio is bifurcated into Retail and Wholesale portfolios, wherein the Retail portfolio is segmented into homogenous pools using various factors such as nature of product, delinquencies, and other demographic and behavioral variables of the borrowers. The wholesale portfolio is segmented into various risk grades on the basis of host of quantitative and qualitative factors including financial performance, industry risk, business risk and management quality. The allowance for loan-related losses and allowance for lending-related commitments represents expected credit losses over the remaining expected life of outstanding loans and lending-related commitments that are not unconditionally cancellable. The Bank does not record an allowance for future draws on unconditionally cancellable lending-related commitments (e.g., credit cards). The Bank does not record an allowance on accrued interest receivables on the balance sheet due to its policy to reverse interest income on loans more than 90 days past due and in case of agricultural loans more than 365 days past due , and also on any loans classified as non-performing. The expected life for retail loans and wholesale loans is determined by considering its contractual term and expected prepayments. The expected life of funded credit card loans is generally estimated by considering expected future payments on the credit card account. The Bank has Unconditionally Cancellable Clause (UCC) for credit card lines and as allowed by CECL accounting guidance, the Bank makes an allowance only for debt drawn at the time of expected loss measurement. Bank applies expected principal payments to the credit card receivable balances existing at the reporting date until the balance is exhausted. The estimate of expected credit losses includes expected recoveries of amounts previously charged off or expected to be charged off, even if such recoveries result in a negative allowance. The Retail loans are charged off against allowances typically when the account becomes 150 to 1,083 days past due depending on the type of loan. The defined delinquency levels at which major loan types are charged off are 150 days past due for personal loans, credit card receivables, and 180 days for auto loans, commercial vehicle and construction equipment finance, 720 days past due for housing loans and on a customer by customer basis in respect of retail business banking when management believes that any future cash flows from these loans are remote including realization of collateral, if applicable, and where any restructuring or any other settlement arrangements were not feasible. The wholesale Loans are charged off against the allowance when management believes that the loan balance may not be recovered including realization of collateral, if applicable, and where any restructuring or any other settlement arrangements were not feasible. Subsequent recoveries, if any, against write-off cases, are adjusted to provision for credit losses in the consolidated statement of income. Wholesale loans are considered non-performing when, based on current information and events, it is probable that the Bank will be unable to collect scheduled payments of principal or interest when due according to the contractual terms of the loan agreement. Factors considered by management in determining non-performance include payment status, the financial condition of the borrower, the value of collateral held, and the probability of collecting scheduled principal and interest payments when due. Wholesale loans that experienced insignificant payment delays and payment shortfalls are generally not classified as non-performing but are placed on a surveillance watch list and closely monitored for deterioration. Management determines the significance of payment delays and payment shortfalls on a case-by-case basis, taking into consideration all of the circumstances surrounding the loan and the borrower, including the length of the delay, the reasons for the delay, the borrower’s prior payment record, market information, and the amount of the shortfall in relation to the principal and interest owed. These factors are considered by the Bank for selection of loans for credit reviews and assessment of allowance. In order to estimate the allowance, the Bank primarily relies on its risk-segmentation models, which are also an integral part of the Bank’s risk management framework. Risk segmentation aims to group homogenous exposures together to allow for collective assessment of expected losses. Expected Loss estimation under collective assessment, is primarily based on Probability of Default (PD), Loss given Default (LGD), Exposure at Default (EAD) estimates. The Bank has modeled its probability of default (PD) estimates at the aforementioned granularity for its retail and wholesale portfolios and has also created the tenor structure of the same for computation of credit losses. The Bank’s off-balance sheet credit exposures include unfunded loan commitments, financial guarantees, including standby letters of credit, and other similar instruments. For off-balance sheet credit exposures, the Bank recognizes an Allowance for credit loss (ACL) associated with the unfunded amounts. The Bank does not recognize an ACL for commitments that are unconditionally cancelable at Bank’s discretion. ACL for off-balance sheet credit exposures are reported as a liability in accrued expenses and other liabilities on the consolidated balance sheet. ACL is in such cases is measured for the remaining contractual term, adjusted for prepayments, of the financial asset (including off-balance sheet credit exposures) using historical experience, current conditions, and reasonable and supportable forecasts . Collective and Individual Assessments Management estimates the allowance balance using relevant available information, from internal and external sources, relating to past events, current conditions, and reasonable and supportable forecasts. Historical loan default and loss experience provides the basis for the estimation of expected credit losses. Adjustments to historical loss information incorporate management’s view of current conditions and forecasts. The methodology for estimating the amount of credit losses reported in the allowance for credit losses has two basic components: first, a pooled component for expected credit losses for pools of loans that share similar risk characteristics and second an asset-specific component involving loans that do not share risk characteristics and the measurement of expected credit losses for such individual loans.. . As an integral part of the credit process, the Bank has a credit rating model appropriate to its retail and wholesale credit segments. The Bank monitors credit quality within its segments based on primary credit quality indicators. This internal grading is updated at least annually. The majority of the Bank’s credit exposures share risk characteristics with other similar exposures, and as a result are collectively assessed for allowance (“portfolio-based component”). If an exposure does not share risk characteristics with other exposures, the Bank generally estimates expected credit losses on an individual basis, considering expected repayment and conditions impacting that individual exposure (“asset-specific component”). The asset-specific component covers loans modified or reasonably expected to be modified in a TDR, collateral-dependent loans, as well as, borrowers with financial difficulties Portfolio-based component (Pooled Loans) The portfolio-based component begins with a quantitative calculation that considers the likelihood of the borrower changing delinquency status or moving from one risk rating to another. The quantitative calculation covers expected credit losses over an instrument’s expected life and is estimated by applying credit loss factors to the Bank’s exposure at default. Apart from its historical experience, the Bank seeks to incorporate any reasonable and supportable information regarding the prevalent and future economic and operating conditions, and their impact on credit losses for the Bank into its allowance. The Bank therefore includes in its estimation the use of quantitative statistical models to predict impact of macro-economic variables on defaults. The Bank relies on a single economic variable to develop reasonable and supportable forecasts. In deploying these models the Bank has assessed the impact of an exhaustive set of macro-economic variables such as GDP, inflation, Gross Capital Formation and Index of Industrial Production(IIP) on its expected losses, and uses consensus macro-economic forecasts surveyed and published by the Reserve Bank of India. As the consensus macro-economic forecasts are published for a year the Bank reverts to the historical average default rate beyond this period. Any adjustments needed to the modeled expected losses in the quantitative calculations are addressed through a qualitative adjustment. Qualitative adjustment , among other things: the uncertainty of forward-looking scenarios based on the likelihood and severity of a possible recession; the uncertainty of economic conditions related to an alternative downside scenario; certain portfolio characteristics and concentrations; collateral coverage; model limitations; idiosyncratic events; and other relevant criterias. The qualitative adjustment also reflects the estimated impact of the pandemic on the economic forecasts and the impact on credit loss estimates. The total ACL is comprised of the quantitative and qualitative components. The Bank estimates its allowance for credit losses for pooled loans based on its probability of default and loss given default, determined for the respective risk pools. Asset-specific component To determine the asset-specific component of the allowance, collateral-dependent loans (including those loans for which foreclosure is probable) and larger, non-accrual risk-rated loans in the wholesale portfolio segment are generally evaluated individually, while smaller loans (both scored and risk-rated) are aggregated for evaluation using factors relevant for the respective class of assets. The Bank generally measures the asset-specific allowance as the difference between the amortized cost of the loan and the present value of the cash flows expected to be collected, discounted at the loan’s original effective interest rate. Subsequent changes in impairment, including those related to passage of time, are generally recognized as an adjustment to the allowance for credit losses. For collateral-dependent loans, the fair value of collateral less estimated costs to sell is used to determine the charge-off amount for declines in value (to reduce the amortized cost of the loan to the fair value of collateral) or the amount of negative allowance that should be recognized (for recoveries of prior charge-offs associated with improvements in the fair value of collateral). The asset-specific component of the allowance for credit losses that have been or are expected to be modified in TDRs incorporates the effect of the modification on the loan’s expected cash flows (including forgone interest, principal forgiveness, as well as other concessions), and also the potential for redefault. For wholesale loans modified or expected to be modified in TDRs, expected losses incorporate management’s expectation of the borrower’s ability to repay under the modified terms. Estimating the timing and amounts of future cash flows is highly judgmental as these cash flow projections rely upon estimates such as loss severities, asset valuations, default rates (including redefault rates on modified loans), the amounts and timing of interest or principal payments (including any expected prepayments) or other factors that are reflective of current and expected market conditions. All of these estimates and assumptions require significant management judgment and certain assumptions are highly subjective.
Sales/transfer of receivables | j. Sales/transfer of receivables The Bank enters into assignment transactions, which are similar to asset-backed securitization transactions through the special purpose entities (SPEs) route, except that such portfolios of receivables are assigned directly to the purchaser and are not represented by pass-through certificates. The Bank also sells finance receivables to SPEs, formerly qualifying special purpose entities (QSPEs) in securitization transactions. Recourse is in the form of the Bank’s investment in subordinated securities issued by these SPEs, cash collateral and other credit and liquidity enhancements. The receivables are derecognized in the balance sheet when they are sold and consideration has been received by the Bank. Sales and transfers that do not meet the criteria for surrender of control are accounted for as secured borrowings. The Bank first makes a determination as to whether the securitization entity would be consolidated. Second, it determines whether the transfer of financial assets is considered a sale. Furthermore, former qualifying special purpose entities (QSPEs) are now considered VIEs and are no longer exempt from consolidation. The Bank consolidates VIEs when it has both: (1) power to direct activities of the VIE that most significantly impact the entity’s economic performance and (2) an obligation to absorb losses or right to receive benefits from the entity that could potentially be significant to the VIE. The scope conditions examined include whether the entities’ equity investment at risk is insufficient to finance the activities without subordinated financial support and whether the holders of equity lack the characteristics of a financial interest. A controlling financial interest includes characteristics such as ability to make decisions through voting or similar rights, unlimited obligation to absorb the entities expected losses, and unlimited rights to receive the entities expected residual returns. Gains or losses from the sale of receivables are recognized in the income statement in the period the sale occurs based on the relative fair value of the portion sold and the portion allocated to retained interests, and are reported net of the estimated cost of servicing by the Bank. Fair values are determined based on the present value of expected future cash flows, using best estimates for key assumptions, such as prepayment and discount rates, commensurate with the risk involved.
Property and equipment | k. Property and equipment Property and equipment are stated at cost, less accumulated depreciation. Depreciation is provided over the estimated useful lives of property and equipment on a straight-line basis at the following rates:
Type of Asset |  | Rate of depreciation
Premises |  | 1.63%
Software and systems |  | 20.00%
Equipment and furniture |  | 10.00%-33.33%
For assets purchased and sold during the year, depreciation is provided on a pro rata basis by the Bank and capital advances are included in other assets. Improvements to leasehold premises are charged off over the remaining primary period of the lease.
Lease accounting | l. Lease accounting Effective April 1, 2019, the Bank adopted FASB ASU 2016-02 “Leases (Topic 842)”. The Bank applied Topic 842 using the modified retrospective method. As a result, comparative information has not been adjusted and continues to be reported under ASC 840. As of April 1, 2019, the date of the Bank’s initial application of ASC 842, the Bank recognized its lease liabilities measured as the present value of lease payments not yet paid, discounted using the incremental borrowing rate as at the date of initial application. The right-of-use asset as of the date of the initial application includes an initial measurement of the lease liabilities adjusted for accrued lease payments as of date of initial application. At the inception of the contract, the Bank assesses whether the contract, is or contains, a lease. The Bank’s assessment is based on whether(1) the contract involves the use of distinct identified assets, (2) the Bank has the right to substantially all the economic benefit from the use of the asset throughout the term of the contract, and (3) the Bank has the right to direct the use of the asset. Leases are examined for classification as either finance leases or operating leases. A lease is classified as a finance lease if any one of the following criteria is met (1) the lease transfers ownership of the asset by the end of the lease term, (2) the lease contains an option to purchase the asset that is reasonably certain to be exercised, (3) the lease term is for the major part of the remaining useful life of the asset or (4) the present value of the lease payments equals or exceeds substantially all of the fair value of the asset. A lease is classified as an operating lease if it does not meet any one of the above criteria. The Banks’s lessee arrangements consist of operating leases. The Bank records right-of-use assets and lease liabilities at the lease commencement date. Right-of-use assets are reported in other assets on the Consolidated Balance Sheets, and the related lease liabilities are reported in accrued expenses and other liabilities. The Bank has elected not to record right-of-use assets for short-term-leases that have a lease term of 12 months or less and thus, all leases with a lease term exceeding 12 months are recorded on the consolidated balance sheet. Lease expense is recognized on a straight-line basis over the lease term and is recorded in non-interest expense- premises and equipment in the consolidated statements of income. The Bank made an accounting policy decision not to separate lease and non-lease components of a contract that is or contains a lease. At the lease commencement, lease liabilities are recognized based on the present value of the remaining lease payments and discounted using the incremental borrowing rate as at the date of the lease commencement. Right-of-use assets initially equal the lease liabilities, adjusted for any lease payments made prior to lease commencement and for any lease incentives. The Bank assesses leased assets for impairment, and if the carrying amount of the leased asset exceeds the undiscounted cash flows from the lease payments and the estimated residual value upon disposition of the leased asset, an impairment loss is recognized.
Impairment or disposal of tangible long-lived assets | m. Impairment or disposal of tangible long-lived assets Whenever events or circumstances indicate that the carrying amount of tangible long lived assets may not be recoverable, the Bank subjects such long lived assets to a test of recoverability based on the undiscounted cash flows from use or disposition of the asset. Such events or circumstances would include changes in the market, technology obsolescence, adverse changes in profitability or regulation. If the asset is impaired, the Bank recognizes an impairment loss estimated as the difference between the carrying value and the net realizable value.
Income tax | n. Income tax Income tax expense/benefit consists of the current tax expense and the net change in deferred tax assets or liabilities during the year. Deferred tax assets and liabilities are recognized for the future tax consequences of differences between the carrying values of assets and liabilities for financial reporting purposes and their respective tax bases, and for operating loss and tax credit carry forwards. Deferred tax assets are reduced by a valuation allowance to the amount that is more likely than not to be realized based on management’s judgment. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which the deferred tax assets or liabilities are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in the income statement in the period of enactment of the change. Income tax benefits are recognized and measured based upon a two-step model: 1) a tax position must be more-likely-than-not to be sustained based on its technical merits in order to be recognized, and 2) the benefit is measured as the largest amount of that position that is greater than 50 percent likely of being realized upon settlement. The difference between the benefit recognized for a position in accordance with this model and the tax benefit claimed on a tax return is referred to as an unrecognized tax benefit. The Bank’s policy is to include interest income, interest expense and penalties on overpayments and underpayment of income taxes within income tax expense in the consolidated statement of income. Interest income on overpayments of income taxes is recognized when the related matter is resolved. The Bank accounted for dividend distribution tax in equity in the year in which a dividend is declared. With effect from April 1, 2020, no direct tax required to be paid by the Bank since dividend distribution tax payable on dividend distributed have been abolished. The Bank follows specific identification method for releasing income tax effects from accumulated other comprehensive income.
Revenue recognition | o. Revenue recognition Interest income from loans and from investments is recognized on an accrual basis using effective interest method when earned except in respect of loans or investments placed on non-accrual status, where it is recognized when received. Fees and commissions from guarantees issued are amortized over the contractual period of the commitment. Dividends from investments are recognized when declared. Realized gains and losses on sale of securities are recorded on the trade date and are determined using the weighted average cost method. Other fees and income are recognized when earned, which is when the service that results in the income has been provided. The Bank amortizes annual fees on credit cards over the contractual period of the fees.
Foreign currency transactions | p. Foreign currency transactions The Bank’s functional currency is the Indian Rupee, except for the Bank’s foreign branches. Foreign currency transactions are recorded at the exchange rate prevailing on the date of the transaction. Foreign currency denominated monetary assets and liabilities are converted into respective functional currency using exchange rates prevailing on the balance sheet dates. Gains and losses arising on conversion of foreign currency denominated monetary assets and liabilities and on foreign currency transactions are included in the determination of net income under foreign exchange transactions. For the foreign branches, the assets, liabilities and operations are translated, for consolidation purposes, from functional currency of the foreign branch to the Indian Rupee reporting currency at period-end rates for assets and liabilities and at average rates for operations. The resulting unrealized gains or losses are reported as a component of accumulated other comprehensive income (OCI).
Stock-based compensation | q. Stock-based compensation The fair value of stock-based compensation is estimated on the date of each grant based on a binomial model. For further information, see note 2 1 .
Debt issuance costs | r. Debt issuance costs Issuance costs of long-term debt are amortized over the tenure of the debt.
Earnings per share | s. Earnings per share Basic earnings per equity share have been computed by dividing net income by the weighted average number of equity shares outstanding for the period. Diluted earnings per equity share has been computed using the weighted average number of equity shares and dilutive potential equity shares outstanding during the period, using the treasury stock method, except where the result would be anti-dilutive. The Bank also reports basic and diluted earnings per ADS, where each ADS represents three equity shares. Earnings per ADS have been computed as earnings per equity share multiplied by the number of equity shares per ADS. A reconciliation of the number of shares used in computing earnings per share has been provided in note 2 8 .
Segment information | t. Segment information The Bank operates in three reportable segments, namely retail banking, wholesale banking and treasury services. Segment-wise information has been provided in note 2 5 .
Derivative financial instruments | u. Derivative financial instruments The Bank recognizes all derivative instruments, including certain derivative instruments embedded in other contracts, as assets or liabilities in the balance sheet and measures them at fair value. The Bank has not designated any derivatives as hedges. As such, all changes in fair value of derivative instruments are recognized in net income under derivative gain/(loss) in the period of change. The Bank enters into forward exchange contracts, currency swaps and currency options with its customers and typically transfers such customer exposures in the inter-bank foreign exchange markets. The Bank also enters into such instruments to cover its own foreign exchange exposures. All such instruments are carried at fair value, determined based on market quotations or market-based inputs. The Bank enters into interest rate swaps for its own account. The Bank also enters into interest rate currency swaps and cross currency interest rate swaps with its customers and typically offsets these risks in the inter-bank market. Such contracts are carried on the balance sheet at fair value, or priced using market determined yield curves.
Business combination | v. Business combination The Bank accounts for acquired businesses using the purchase method of accounting which requires that the assets acquired and liabilities assumed be recorded at the date of acquisition at their respective fair values. The application of the purchase method requires certain estimates and assumptions, especially concerning the determination of the fair values of the acquired intangible and tangible assets, as well as the liabilities assumed at the date of the acquisition. The judgments made in the context of the purchase price allocation can materially impact the Bank’s future results of operations. The valuations are based on information available at the acquisition date. Purchase consideration in excess of bank’s interest and the acquiree’s net fair value of identifiable assets and liabilities is recognized as goodwill.
Goodwill and other intangibles | w. Goodwill and other intangibles Under applicable accounting guidance, goodwill is reviewed at the reporting unit level for potential impairment at least on an annual basis at the end of the reporting period, or more frequently if events or circumstances indicate a potential impairment. Up to March 31, 2020 this analysis was a two-step process. The first step of the goodwill impairment test compares the fair value of the reporting unit with its carrying amount, including goodwill. If the fair value of the reporting unit exceeds its carrying amount, then the goodwill of the reporting unit is considered not impaired; however, if the carrying amount of the reporting unit exceeds its fair value, the second step is to be performed. The second step involved calculating an implied fair value of goodwill for each reporting unit for which the first step indicated possible impairment. On April 1, 2020, the Bank adopted ASU 2017-04 which eliminated the requirement to calculate the implied fair value of Goodwill ( the second step). Accordingly, i f the fair value of goodwill exceeds the goodwill assigned to the reporting unit, there is no impairment. If the goodwill assigned to a reporting unit exceeds fair value of the goodwill, an impairment charge is recorded for the excess. An impairment loss recognized cannot exceed the amount of goodwill assigned to a reporting unit, and the loss establishes a new basis in the goodwill. Subsequent reversal of goodwill impairment losses is not permitted.
Recently adopted accounting standards | x. Recently adopted accounting standards In June 2016, the FASB issued ASU 2016-13 “Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments”. The ASU introduces a new accounting model, the Current Expected Credit Losses model (“CECL”), which requires earlier recognition of credit losses, while also providing transparency about credit risk. The CECL model utilizes a lifetime “expected credit loss” measurement objective for the recognition of credit losses for loans, held to maturity securities and other receivables at the time the financial asset is originated or acquired. It also applies to off-balance sheet credit exposures not accounted for as insurance (loan commitments, standby letters of credit, financial guarantees, and other similar instruments). The expected credit losses are required to be adjusted each period for changes in expected lifetime credit losses. The update requires use of judgment in determining the relevant information and estimation methods that are appropriate for measurement of expected credit losses which is to be based on relevant information about past events, historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. In addition, ASC 326-30 provides a new credit loss model for available-for-sale debt securities where the credit losses are required to be recorded through an allowance and the ASU limits the amount of the allowance for credit losses to the amount by which fair value is below amortized cost. While the update changes the measurement of the allowance for credit losses, it does not change the credit risk for the Bank’s loan portfolios. The FASB has issued multiple updates to ASU 2016-13 as codified in Topic 326, viz. ASUs 2018-19, 2019-04, 2019-05, 2019-10, 2019-11, 2020-02, and 2020-03. These ASUs have provided for various minor technical corrections and improvements to the codification as well as other transition matters. The Bank adopted the ASU effective April 1, 2020 using the modified retrospective method for all financial assets measured at amortized cost and off-balance sheet credit exposures. Results for reporting periods beginning after April 1, 2020 are presented under ASC 326 while prior period amounts continue to be reported in accordance with previously applicable GAAP. The adoption of ASC 326 had an impact of Rs. 83,496.4 million that was offset by a corresponding decrease in retained earnings of Rs. 62,480.4 million and Rs. 21,016.0 million increase in deferred tax assets. The increase in the allowance for credit losses required under the ASC 326 generally reflected the impact of reserves calculated over the life of loan, and more specifically higher reserves required for longer duration loan portfolios, and the utilization of a longer historical look-back period in the calculation of probability of default . The following table illustrates the impact on allowances for credit losses on adopting ASC 326.
|  | As of April 1, 2020 |
|  | As reported under ASC 326 |  |  | Pre-ASC 326 adoption |  |  | Impact of ASC 326 adoption |
|  | (In millions) |
Loans: |  |  |  |  |  |  |  |  |  |  |  |
Auto loans |  | Rs. | 29,099.9 |  |  | Rs. | 19,219.0 |  |  | Rs. | 9,880.9 |
Personal loans/Credit cards |  |  | 85,188.2 |  |  |  | 47,097.1 |  |  |  | 38,091.1 |
Retail business banking |  |  | 36,807.8 |  |  |  | 32,860.3 |  |  |  | 3,947.5 |
Commercial vehicle and construction equipment finance |  |  | 20,788.9 |  |  |  | 20,463.4 |  |  |  | 325.5 |
Housing loans |  |  | 3,360.2 |  |  |  | 1,700.7 |  |  |  | 1,659.5 |
Other retail loans |  |  | 38,098.6 |  |  |  | 37,864.3 |  |  |  | 234.3 |
Wholesale loans |  |  | 66,502.6 |  |  |  | 39,628.4 |  |  |  | 26,874.2 |
Allowance for Credit Losses on Loans |  | Rs. | 279,846.2 |  |  | Rs. | 198,833.2 |  |  | Rs. | 81,013.0 |
Allowance for Credit Losses on AFS debt securities |  |  | — |  |  |  | — |  |  |  | — |
Accrued expenses and other liabilities: |  |  |  |  |  |  |  |  |  |  |  |
Allowance for Credit Losses on Off-Balance Sheet Credit Exposures and undrawn commitments |  | Rs. | 5,523.4 |  |  | Rs. | 3,226.8 |  |  | Rs. | 2,296.6 |
Allowance for Credit Losses Other |  |  | 186.8 |  |  |  | — |  |  |  | 186.8 |
Tota l |  | Rs. | 285,556.4 |  |  | Rs. | 202,060.0 |  |  | Rs. | 83,496.4 |
In January 2017, the FASB issued ASU No. 2017-04 “Intangibles-Goodwill and Other (Topic 350)—Simplifying the Test for Goodwill Impairment”. The amendment in this update simplifies the subsequent measurement of goodwill impairment by eliminating the requirement to calculate the implied fair value of goodwill (i.e., the current Step 2 of the goodwill impairment test) to measure a goodwill impairment charge. The impairment test is simply the comparison of the fair value of a reporting unit with its carrying amount (the current Step 1), with the impairment charge being the deficit in fair value but not exceeding the total amount of goodwill allocated to that reporting unit. The Bank adopted the ASU effective April 1, 2020. The ASU is to be adopted prospectively. Management had conducted its annual impairment tests for goodwill and indefinite-lived intangible assets as of March 31, 2020 using generally accepted valuation methods. No impairment of goodwill or indefinite-lived intangible assets was identified as a result of the said annual impairment analyses. Future impairment testing will be conducted each March 31, unless a triggering event occurs in the interim that would suggest possible impairment, in which case it would be tested as of the date of the triggering event. The adoption of this guidance did not have a material impact on the Bank’s consolidated financial position or results of operations. In August 2018, the FASB issued ASU No. 2018-13 “Fair Value Measurement (Topic 820): Disclosure Framework—Changes to the Disclosure Requirements for Fair Value Measurement”. The amendments modify certain disclosure requirements for fair value measurements. Entities are required to disclose and describe the range and weighted average of significant observable inputs used to prospectively develop Level 3 fair value measurements. The Bank adopted the ASU effective April 1, 2020. The adoption of this guidance did not have a material impact on the Bank’s consolidated financial position or results of operations .
Recently issued accounting pronouncements not yet effective | y. Recently issued accounting pronouncements not yet effective In December 2019, the FASB issued ASU 2019-12, “Income Taxes (Topic 740) – Simplifying the Accounting for Income Taxes.” This ASU is part of the FASB’s initiative to make narrow-scope simplifications and improvements to accounting standards through a series of short-term projects. The ASU removes specific exceptions to general principles in Topic 740 (eliminating the need for an organization to analyze whether certain exceptions apply in a given period) and improving financial statement preparers’ application of certain income tax-related guidance. The amendments in the ASU are effective for public business entities for fiscal years beginning after December 15, 2020, and interim periods within those fiscal years. Early adoption is permitted. The Bank expects to adopt the guidance in fiscal 2022. The Bank is currently assessing the impact of this guidance will have on its consolidated financial position or results of operations. In January 2020, the FASB issued ASU 2020-01, “Investments – Equity Securities (Topic 321), Investments – Equity Method and Joint Ventures (Topic 323), and Derivatives and Hedging (Topic 815) – Clarifying the Interactions between Topic 321, Topic 323, and Topic 815.” ASU 2016-01 made targeted improvements to accounting for financial instruments, including providing an entity with the ability to measure certain equity securities without a readily determinable fair value at cost, less any impairment, plus or minus changes resulting from observable price changes in orderly transactions for the identical or a similar investment of the same issuer. Among other topics, the amendments clarify that an entity should consider observable transactions that require it to either apply or discontinue the equity method of accounting. The amendments in the ASU are effective for public business entities for fiscal years beginning after December 15, 2020, and interim periods within those fiscal years. Early adoption is permitted. The Bank expects to adopt the guidance in fiscal 2022. The Bank is currently assessing the impact of this guidance will have on its consolidated financial position or results of operations. In March 2020, the FASB issued ASU No. 2020-04 “Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting”. The ASU provides for optional expedients and other guidance related to modification of contracts, hedging relationships, and other transactions affected by reference rate reform. The ASU also provides an election to account for certain contract amendments related to reference rate reform as modifications rather than extinguishments without the requirement to assess the significance of the amendments. The various practical expedients and elections allow hedge accounting to continue uninterrupted during the transition period. The amendments in the update are elective and applicable on issue. The guidance terminates in December 2022. The Bank has as of March 31, 2021 not opted for any of the various practical expedients and elections provided in the update and accordingly there has been no material impact on the Bank’s consolidated financial position or results of operations.
Convenience translation | z. Convenience translation The accompanying financial statements have been expressed in Indian Rupees (“Rs.”), the Bank’s functional currency. For the convenience of the reader, the financial statements as of and for the fiscal year ended March 31, 2021 have been translated into U.S. dollars at U.S.$ 1.00 = Rs. 73.14 as published by the Federal Reserve Board of New York on March 31, 2021. Such translation should not be construed as a representation that the rupee amounts have been or could be converted into United States dollars at that or any other rate, or at all.

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- Definition Disclosure of accounting policy for estimating the allowance for losses on loans and lease receivables. The disclosure may include (a) how the entity determines each element of the allowance, (b) which loans are evaluated individually and which loans are evaluated as a group, (c) how the entity determines both the allocated and unallocated portions of the allowance, (d) how the entity determines the loss factors applied to graded loans in order to develop a general allowance, and (e) what self-correcting mechanism the entity uses to reduce differences between estimated and actual losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=84158767&loc=d3e18780-107790 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5144-111524 + Details
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- Definition Disclosure of accounting policy for revenue. Includes revenue from contract with customer and from other sources. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=84158767&loc=d3e18823-107790 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=84158767&loc=d3e18823-107790 + Details
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