BASIS OF PRESENTATION (Policies)	3 Months Ended
Jun. 30, 2021
BASIS OF PRESENTATION
BASIS OF PRESENTATION	BASIS OF PRESENTATION The accompanying unaudited consolidated financial statements were prepared in accordance with instructions for Quarterly Reports on Form 10-Q and, therefore, do not include all disclosures necessary for a complete presentation of financial condition, results of operations and cash flows in conformity with accounting principles generally accepted in the United States of America (“generally accepted accounting principles” or “GAAP”). However, all adjustments that are, in the opinion of management, necessary for a fair presentation of the interim unaudited consolidated financial statements have been included. All such adjustments are of a normal recurring nature. The accompanying unaudited consolidated financial statements should be read in conjunction with the audited consolidated financial statements included in the Riverview Bancorp, Inc. Annual Report on Form 10-K for the year ended March 31, 2021 (“2021 Form 10-K”). The unaudited consolidated results of operations for the three months ended June 30, 2021 are not necessarily indicative of the results which may be expected for the entire fiscal year ending March 31, 2022. The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates. Certain prior period amounts have been reclassified to conform to the current period presentation; such reclassifications had no effect on previously reported net income or total shareholders’ equity.
PRINCIPLES OF CONSOLIDATION	PRINCIPLES OF CONSOLIDATION The accompanying consolidated financial statements include the accounts of Riverview Bancorp, Inc.; its wholly-owned subsidiary, Riverview Community Bank (the “Bank”); the Bank’s wholly-owned subsidiary, Riverview Services, Inc., and the Bank’s majority-owned subsidiary, Riverview Trust Company (the “Trust Company”) (collectively referred to as the “Company”). All inter-company transactions and balances have been eliminated in consolidation. For the period from April 1, 2017 through December 2019, the Trust Company was a wholly-owned subsidiary of the Bank. In December 2019, the Trust Company issued 1,500 shares of Trust Company stock in conjunction with the exercise of 1,500 Trust Company stock options by the Trust Company’s President and Chief Executive Officer. In October 2020, the Trust Company issued an additional 500 shares of Trust Company stock with the exercise of options for 500 shares of Trust Company common stock by the Trust Company's President and Chief Executive Officer. In May 2021, the Trust Company issued an additional 500 shares of Trust Company stock with the exercise of options for 500 shares of Trust Company common stock by the Trust Company’s President and Chief Executive Officer. As a result of these transactions, the Bank's ownership in the Trust Company decreased from 100% to 97.3%, resulting in a 2.7% noncontrolling interest held by the Trust Company’s President and Chief Executive Officer. The noncontrolling interest was $195,000 and $110,000 as of June 30, 2021 and 2020, respectively, and net income attributable to the noncontrolling interest was $2,000 and $3,000 for the three months ended June 30, 2021 and 2020, respectively. These amounts are not presented separately in the accompanying consolidated financial statements due to their insignificance.
NEW ACCOUNTING PRONOUNCEMENTS	NEW ACCOUNTING PRONOUNCEMENTS In June 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-13, “Financial Instruments – Credit Losses: Measurement of Credit Losses on Financial Instruments” (“ASU 2016-13”) as amended by ASU 2018-19, ASU 2019-04, ASU 2019-05, ASU 2019-10 and ASU 2019-11. ASU 2016-13 replaces the existing incurred losses methodology for estimating allowances with a current expected credit losses methodology with respect to most financial assets measured at amortized cost and certain other instruments, including trade and other receivables, loans, held to maturity investment securities and off-balance sheet commitments. In addition, ASU 2016-13 requires credit losses relating to available for sale debt securities to be recorded through an allowance for credit losses rather than as a reduction of carrying amount. ASU 2016-13 also changes the accounting for purchased credit impaired debt securities and loans. ASU 2016-13 retains many of the current disclosure requirements in GAAP and expands certain disclosure requirements. As a “smaller reporting company” filer with the U.S. Securities and Exchange Commission, ASU 2016-13 is effective for the Company for fiscal years beginning after December 15, 2022, including interim periods within those fiscal years. Upon adoption, the Company expects a change in the processes and procedures to calculate the allowance for loan losses, including changes in assumptions and estimates to consider expected credit losses over the life of the loan versus the current accounting practice that utilizes the incurred loss model. In addition, the current accounting policy and procedures for other-than-temporary impairment of investment securities available for sale will be replaced with an allowance approach. The Company is reviewing the requirements of ASU 2016-13 and has begun developing and implementing processes and procedures to ensure it is fully compliant with the amendments at the adoption date. At this time, management anticipates the allowance for loan losses will increase as a result of the implementation of ASU 2016-13; however, until management's evaluation is complete, the magnitude of the increase will not be known. In January 2017, the FASB issued ASU 2017-04, “Intangibles – Goodwill and Other: Simplifying the Test for Goodwill Impairment” (“ASU 2017-04”). ASU 2017-04 simplifies the subsequent measurement of goodwill and eliminates Step 2 from the goodwill impairment test. In computing the implied fair value of goodwill under Step 2, an entity had to perform procedures to determine the fair value at the impairment testing date of its assets and liabilities (including unrecognized assets and liabilities) following the procedure that would be required in determining the fair value of assets acquired and liabilities assumed in a business combination. Under ASU 2017-04, an entity should perform its annual, or interim, goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. An entity should recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value; however, the loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. Additionally, an entity should consider income tax effects from any tax-deductible goodwill on the carrying amount of the reporting unit when measuring the goodwill impairment loss, if applicable. ASU 2017-04 is effective for annual or interim goodwill impairment tests in fiscal years beginning after December 15, 2022. Early application of ASU 2017-04 is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. The adoption of ASU 2017-04 is not expected to have a material impact on the Company's future consolidated financial statements. In December 2019, the FASB issued ASU 2019-12, “Income Taxes (Topic 740), Simplifying the Accounting for Income Taxes” (“ASU 2019-12”). ASU 2019-12 simplifies the accounting for income taxes by removing, among other things (1) the exception to the incremental approach for intra-period tax allocation when there is a loss from continuing operations and income or a gain from other items, and (2) the general methodology for calculating income taxes in an interim period when a year-to-date loss exceeds the anticipated loss for the year. ASU 2019-12 also requires that an entity reflect the effect of an enacted change in tax laws or rates in the annual effective tax rate computation in the interim period that includes the enactment date. ASU 2019-12 is effective for fiscal years beginning after December 15, 2020, including interim periods within those fiscal years. The adoption of ASU 2019-12 did not have a material impact on the Company's consolidated financial statements. In March 2020, the FASB issued ASU 2020-04, "Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting" ("ASU 2020-04"). ASU 2020-04 applies to contracts, hedging relationships and other transactions that reference LIBOR or other rate references expected to be discontinued because of reference rate reform. ASU 2020-04 permits an entity to make necessary modifications to eligible contracts or transactions without requiring contract remeasurement or reassessment of a previous accounting determination. The Company's current interest rates on its junior subordinated debentures are based upon the three-month LIBOR plus a spread. In January 2021, ASU 2021-01 updated amendments in the new ASU to clarify that certain optional expedients and exceptions in Topic 848 for contract modifications and hedge accounting apply to derivatives that are affected by the discounting transition. ASU 2021-01 also amends the expedients and exceptions in Topic 848 to capture the incremental consequences of the scope clarification. The amendments in ASU 2021-01 have differing effective dates, beginning with interim periods including and subsequent to March 12, 2020 through December 31, 2022. The Company has not adopted ASU 2020-04 as of March 31, 2021. The adoption of ASU 2020-04 is not expected to have a material impact on the Company's future consolidated financial statements. In October 2020, the FASB issued ASU 2020-08, "Receivables - Nonrefundable Fees and Other Costs" ("ASU 2020-08"). ASU 2020-08 clarifies that the Company should reevaluate whether a callable debt security is within the scope of paragraph FASB Accounting Standards Codification ("ASC") 310-20-35-33 for each reporting period. ASU 2020-08 is effective for fiscal years beginning after December 15, 2020, including interim periods within those fiscal years. The adoption of ASU 2020-08 did not have a material impact on the Company's consolidated financial statements. The CARES Act, signed into law on March 27, 2020, and the CAA 2021, signed into law on December 27, 2020, which extended the CARES Act treatment of TDRs, amended GAAP with respect to the modification of loans to borrowers affected by the COVID-19 pandemic. Among other criteria, this guidance provided that short-term loan modifications made on a good faith basis to borrowers who were current as defined under the CARES Act prior to any relief, are not TDRs. This includes short-term (e.g., nine months) modifications such as payment deferrals, fee waivers, extensions of repayment terms, or other delays in payment that are insignificant. To qualify as an eligible loan under the CARES Act, a loan modification must be (1) related to COVID-19; (2) executed on a loan that was not more than 30 days past due as of December 31, 2019; and (3) executed between March 1, 2020, and the earlier of (a) 60 days after the date of termination of the national emergency by the President or (b) January 1, 2022. As of June 30, 2021, the Company has one modification loan related to the COVID-19 pandemic with an outstanding loan balance, net of deferred fees of $563,000. Loan modifications in accordance with the CARES Act are still subject to an evaluation in regard to determining whether or not a loan is deemed to be impaired.

BASIS OF PRESENTATION (Policies)

3 Months Ended

Jun. 30, 2021

The accompanying unaudited consolidated financial statements were prepared in accordance with instructions for Quarterly Reports on Form 10-Q and, therefore, do not include all disclosures necessary for a complete presentation of financial condition, results of operations and cash flows in conformity with accounting principles generally accepted in the United States of America (“generally accepted accounting principles” or “GAAP”). However, all adjustments that are, in the opinion of management, necessary for a fair presentation of the interim unaudited consolidated financial statements have been included. All such adjustments are of a normal recurring nature.

The accompanying unaudited consolidated financial statements should be read in conjunction with the audited consolidated financial statements included in the Riverview Bancorp, Inc. Annual Report on Form 10-K for the year ended March 31, 2021 (“2021 Form 10-K”). The unaudited consolidated results of operations for the three months ended June 30, 2021 are not necessarily indicative of the results which may be expected for the entire fiscal year ending March 31, 2022.

The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates.

Certain prior period amounts have been reclassified to conform to the current period presentation; such reclassifications had no effect on previously reported net income or total shareholders’ equity.

PRINCIPLES OF CONSOLIDATION

The accompanying consolidated financial statements include the accounts of Riverview Bancorp, Inc.; its wholly-owned subsidiary, Riverview Community Bank (the “Bank”); the Bank’s wholly-owned subsidiary, Riverview Services, Inc., and the Bank’s majority-owned subsidiary, Riverview Trust Company (the “Trust Company”) (collectively referred to as the “Company”). All inter-company transactions and balances have been eliminated in consolidation. For the period from April 1, 2017 through December 2019, the Trust Company was a wholly-owned subsidiary of the Bank. In December 2019, the Trust Company issued 1,500 shares of Trust Company stock in conjunction with the exercise of 1,500 Trust Company stock options by the Trust Company’s President and Chief Executive Officer. In October 2020, the Trust Company issued an additional 500 shares of Trust Company stock with the exercise of options for 500 shares of Trust Company common stock by the Trust Company's President and Chief Executive Officer. In May 2021, the Trust Company issued an additional 500 shares of Trust Company stock with the exercise of options for 500 shares of Trust Company common stock by the Trust Company’s President and Chief Executive Officer. As a result of these transactions, the Bank's ownership in the Trust Company decreased from 100% to 97.3%, resulting in a 2.7% noncontrolling interest held by the Trust Company’s President and Chief Executive Officer. The noncontrolling interest was $195,000 and $110,000 as of June 30, 2021 and 2020, respectively, and net income attributable to the noncontrolling interest was $2,000 and $3,000 for the three months ended June 30, 2021 and 2020, respectively. These amounts are not presented separately in the accompanying consolidated financial statements due to their insignificance.

NEW ACCOUNTING PRONOUNCEMENTS

In June 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-13, “Financial Instruments – Credit Losses: Measurement of Credit Losses on Financial Instruments” (“ASU 2016-13”) as amended by ASU 2018-19, ASU 2019-04, ASU 2019-05, ASU 2019-10 and ASU 2019-11. ASU 2016-13 replaces the existing incurred losses methodology for estimating allowances with a current expected credit losses methodology with respect to most financial assets measured at amortized cost and certain other instruments, including trade and other receivables, loans, held to maturity investment securities and off-balance sheet commitments. In addition, ASU 2016-13 requires credit losses relating to available for sale debt securities to be recorded through an allowance for credit losses rather than as a reduction of carrying amount. ASU 2016-13 also changes the accounting for purchased credit impaired debt securities and loans. ASU 2016-13 retains many of the current disclosure requirements in GAAP and expands certain disclosure requirements. As a “smaller reporting company” filer with the U.S. Securities and Exchange Commission, ASU 2016-13 is effective for the Company for fiscal years beginning after December 15, 2022, including interim periods within those fiscal years. Upon adoption, the Company expects a change in the processes and procedures to calculate the allowance for loan losses, including changes in assumptions and estimates to consider expected credit losses over the life of the loan versus the current accounting practice that utilizes the incurred loss model. In addition, the current accounting policy and procedures for other-than-temporary impairment of investment securities available for sale will be replaced with an allowance approach. The Company is reviewing the requirements of ASU 2016-13 and has begun developing and implementing processes and procedures to ensure it is fully compliant with the amendments at the adoption date. At this time, management anticipates the allowance for loan losses will increase as a result of the implementation of ASU 2016-13; however, until management's evaluation is complete, the magnitude of the increase will not be known.

In January 2017, the FASB issued ASU 2017-04, “Intangibles – Goodwill and Other: Simplifying the Test for Goodwill Impairment” (“ASU 2017-04”). ASU 2017-04 simplifies the subsequent measurement of goodwill and eliminates Step 2 from the goodwill impairment test. In computing the implied fair value of goodwill under Step 2, an entity had to perform procedures to determine the fair value at the impairment testing date of its assets and liabilities (including unrecognized assets and liabilities) following the procedure that would be required in determining the fair value of assets acquired and liabilities assumed in a business combination. Under ASU 2017-04, an entity should perform its annual, or interim, goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. An entity should recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value; however, the loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. Additionally, an entity should consider income tax effects from any tax-deductible goodwill on the carrying amount of the reporting unit when measuring the goodwill impairment loss, if applicable. ASU 2017-04 is effective for annual or interim goodwill impairment tests in fiscal years beginning after December 15, 2022. Early application of ASU 2017-04 is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. The adoption of ASU 2017-04 is not expected to have a material impact on the Company's future consolidated financial statements.

In December 2019, the FASB issued ASU 2019-12, “Income Taxes (Topic 740), Simplifying the Accounting for Income Taxes” (“ASU 2019-12”). ASU 2019-12 simplifies the accounting for income taxes by removing, among other things (1) the exception to the incremental approach for intra-period tax allocation when there is a loss from continuing operations and income or a gain from other items, and (2) the general methodology for calculating income taxes in an interim period when a year-to-date loss exceeds the anticipated loss for the year. ASU 2019-12 also requires that an entity reflect the effect of an enacted change in tax laws or rates in the annual effective tax rate computation in the interim period that includes the enactment date. ASU 2019-12 is effective for fiscal years beginning after December 15, 2020, including interim periods within those fiscal years. The adoption of ASU 2019-12 did not have a material impact on the Company's consolidated financial statements.

In March 2020, the FASB issued ASU 2020-04, "Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting" ("ASU 2020-04"). ASU 2020-04 applies to contracts, hedging relationships and other transactions that reference LIBOR or other rate references expected to be discontinued because of reference rate reform. ASU 2020-04 permits an entity to make necessary modifications to eligible contracts or transactions without requiring contract remeasurement or reassessment of a previous accounting determination. The Company's current interest rates on its junior subordinated debentures are based upon the three-month LIBOR plus a spread. In January 2021, ASU 2021-01 updated amendments in the new ASU to clarify that certain optional expedients and exceptions in Topic 848 for contract modifications and hedge accounting apply to derivatives that are affected by the discounting transition.

ASU 2021-01 also amends the expedients and exceptions in Topic 848 to capture the incremental consequences of the scope clarification. The amendments in ASU 2021-01 have differing effective dates, beginning with interim periods including and subsequent to March 12, 2020 through December 31, 2022. The Company has not adopted ASU 2020-04 as of March 31, 2021. The adoption of ASU 2020-04 is not expected to have a material impact on the Company's future consolidated financial statements.

In October 2020, the FASB issued ASU 2020-08, "Receivables - Nonrefundable Fees and Other Costs" ("ASU 2020-08"). ASU 2020-08 clarifies that the Company should reevaluate whether a callable debt security is within the scope of paragraph FASB Accounting Standards Codification ("ASC") 310-20-35-33 for each reporting period. ASU 2020-08 is effective for fiscal years beginning after December 15, 2020, including interim periods within those fiscal years. The adoption of ASU 2020-08 did not have a material impact on the Company's consolidated financial statements.

The CARES Act, signed into law on March 27, 2020, and the CAA 2021, signed into law on December 27, 2020, which extended the CARES Act treatment of TDRs, amended GAAP with respect to the modification of loans to borrowers affected by the COVID-19 pandemic. Among other criteria, this guidance provided that short-term loan modifications made on a good faith basis to borrowers who were current as defined under the CARES Act prior to any relief, are not TDRs. This includes short-term (e.g., nine months) modifications such as payment deferrals, fee waivers, extensions of repayment terms, or other delays in payment that are insignificant. To qualify as an eligible loan under the CARES Act, a loan modification must be (1) related to COVID-19; (2) executed on a loan that was not more than 30 days past due as of December 31, 2019; and (3) executed between March 1, 2020, and the earlier of (a) 60 days after the date of termination of the national emergency by the President or (b) January 1, 2022. As of June 30, 2021, the Company has one modification loan related to the COVID-19 pandemic with an outstanding loan balance, net of deferred fees of $563,000. Loan modifications in accordance with the CARES Act are still subject to an evaluation in regard to determining whether or not a loan is deemed to be impaired.