Voya Retirement Insurance and Annuity Company

and its

Variable Annuity Account C

Voya MAP Plus NP^SM

Supplement Dated February 2, 2021, to the Contract Prospectus and
Contract Prospectus Summary, each dated May 1, 2020, as amended

This supplement updates and amends certain information contained in your variable annuity contract prospectus and contract prospectus summary. Please read it carefully and keep it with your contract prospectus and contract prospectus summary for future reference.

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NOTICE OF AND IMPORTANT INFORMATION ABOUT
AN UPCOMING FUND REORGANIZATION

The following information only affects you if you currently invest in or plan to invest in the subaccount
that corresponds to the Invesco Endeavor Fund.

In a meeting held January 22, 2021, the Board of Trustees for the Invesco Funds unanimously approved an Agreement and Plan of Reorganization (the “Reorganization”) to reorganize, effective on or about April 23, 2021 (the “Reorganization Date”), Class A shares of the Invesco Endeavor Fund (the “Merging Fund”) with and into Class A shares of the Invesco Main Street Mid Cap Fund^® (the “Surviving Fund”).

Voluntary Transfers Before the Reorganization Date. Prior to the Reorganization Date, you may transfer amounts allocated to the subaccount that invests in the Merging Fund to any other available subaccount or any available fixed interest option.  There will be no charge for any such transfer, and any such transfer will not count as a transfer when imposing any applicable restriction or limit on transfers. See the “TRANSFERS” section of either the contract prospectus or contract prospectus summary for information about making subaccount transfers.

On the Reorganization Date. On the Reorganization Date, your investment in the subaccount that invested in the Merging Fund will automatically become an investment in the subaccount that invests in the Surviving Fund with an equal total net asset value. You will not incur any tax liability because of this automatic reallocation, and your contract value immediately before the reallocation will equal your contract value immediately after the reallocation.

Automatic Fund Reallocation After the Reorganization Date. After the Reorganization Date, the Merging Fund will no longer be available through your contract.  Unless you provide us with alternative allocation instructions, after the Reorganization Date all allocations directed to the subaccount that invested in the Merging Fund will be automatically allocated to the subaccount that invests in the Surviving Fund. See the “TRANSFERS” section of either the contract prospectus or contract prospectus summary for information about making fund allocation changes.

Allocation Instructions. You may give us alternative allocation instructions at any time by contacting us at Customer Service, P.O. Box 990063, Hartford, CT 06199-0063 or calling us at 1-800-584-6001.

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MORE INFORMATION IS AVAILABLE

More information about the funds available through your contract, including information about the risks associated with investing in them can be found in the current prospectus and Statement of Additional Information for each fund. You may obtain these documents by contacting us at:

Customer Service

P.O. Box 990063

Hartford, CT 06199-0063

1-800-584-6001

If you received a summary prospectus for any of the funds available through your contract, you may obtain a full prospectus and other fund information free of charge by either accessing the internet address, calling the telephone number or sending an email request to the email address shown on the front of the fund’s summary prospectus.

Insurance products, annuities and retirement plan funding issued by (third party administrative services may also be provided by) Voya Retirement Insurance and Annuity Company, One Orange Way, Windsor, CT 06095. Securities are distributed by Voya Financial Partners, LLC (member SIPC). Securities may also be distributed through other broker-dealers with which Voya Financial Partners, LLC has selling agreements.

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