VOYA RETIREMENT INSURANCE AND ANNUITY COMPANY

FLORIDA UNIVERSITY SYSTEM OPTIONAL RETIREMENT

PROGRAM AND THE FLORIDA SENIOR MANAGEMENT

SERVICE OPTIONAL ANNUITY PROGRAM

A GROUP DEFERRED FIXED AND VARIABLE ANNUITY CONTRACT

(THE “CONTRACT” OR “CONTRACTS”)

issued to

Plans Established by Eligible Organizations Under Tax Code Sections 401(a),
403(b) and Roth 403(b)

SUMMARY PROSPECTUS FOR NEW INVESTORS

May 1, 2024

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This summary prospectus summarizes key features of the Contract.

Before you participate in the Contract through your retirement plan, you should also review the full prospectus for the Contract (the “full Contract Prospectus”). It contains more information about the Contract’s features, benefits and risks. You can find this document and other information about the contract online at https://vpx.broadridge.com/getcontract1.asp?dtype=isp&cid=voyavpx&fid=NVA003240. You can also obtain this information at no cost by calling 1-800-584-6001 or by sending an email request to ProspectusRequests@voya.com.

___________________________________________________________________________

An Investor may cancel the Contract within 10 days of receiving it

without paying fees or penalties.

In some states, this cancellation period may be longer. Upon cancellation, you will receive either a full refund of the amount you paid with your application or your total Account Value. You should review this summary prospectus, or consult with your investment professional, for additional information about the specific cancellation terms that apply.

___________________________________________________________________________

The U.S. Securities and Exchange Commission (“SEC”) has not approved or disapproved this Contract or passed upon the adequacy of this summary prospectus. Any representation to the contrary is a criminal offense.

ISP.207045-24 

TABLE OF CONTENTS

SPECIAL TERMS USED IN THIS SUMMARY PROSPECTUS

The following are some of the important terms used throughout this summary prospectus that have special meaning. There are other capitalized terms that are explained or defined in other parts of this summary prospectus.

Account Value: The value of: (1) amounts allocated to the Fixed Interest Options, including interest earnings to date; less (2) any deductions from the Fixed Interest Options (e.g., withdrawals and fees); and plus (3) the current dollar value of amounts allocated to the Subaccounts of Variable Annuity Account C, which includes investment performance and fees deducted from the Subaccounts.

Accumulation Phase: The period of time between the date the Contract became effective and the date you start receiving Income Phase payments under the Contract. During the Accumulation Phase, you accumulate retirement benefits.

Accumulation Unit: A unit of measurement used to calculate the Account Value during the Accumulation Phase.

Accumulation Unit Value: The value of an Accumulation Unit for a Subaccount of Variable Annuity Account C. Each Subaccount of Variable Annuity Account C has its own Accumulation Unit Value, which may increase or decrease daily based on the investment performance of the applicable underlying Fund in which it invests.

Beneficiary (or Beneficiaries): The person designated to receive the death benefit payable under the Contract.

Contract or Contracts: The group deferred variable annuity Contract offered by your Plan Sponsor as a funding vehicle for your retirement plan.

Contract Holder: The person to whom we issue the Contract. Generally, the Plan Sponsor or a trust.

Customer Service: The location from which we service the Contracts. The mailing address and telephone number of Customer Service is Defined Contributions Administration, P.O. Box 990063, Hartford, CT 06199-0063, 1-800-584-6001.

Fund(s): The underlying mutual Funds in which the Subaccounts invest.

General Account: The account that contains all of our assets other than those held in Variable Annuity Account C or one of our other separate accounts.

Good Order: Generally, a request is considered to be in “Good Order” when it is signed, dated and made with such clarity and completeness that we are not required to exercise any discretion in carrying it out. We can only act upon written requests that are received in Good Order.

Income Phase: The period during which you receive payments from your Contract.

Investor (also “you” or “participant”): The individual who participates in the Contract through a retirement plan.

Plan Sponsor: The sponsor of your retirement plan. Generally, your employer.

Purchase Payment: Collectively, the initial purchase payment and any additional purchase payment.

Purchase Payment Period (also called “Deposit Cycle” in the Contract): For installment Purchase Payments, the period of time it takes to complete the number of installment Purchase Payments expected to be made to your account over a year. For example, if your payment frequency is monthly, a payment period is completed after 12 Purchase Payments are made. If only 11 Purchase Payments are made, the payment period is not completed until the twelfth Purchase payment is made. At any given time, the number of payment periods completed cannot exceed the number of Account Years completed, regardless of the number of payments made.

Subaccount: Division(s) of Variable Annuity Account C that are investment options under the Contract. Each Subaccount invests in a corresponding underlying mutual Fund.

Tax Code: The Internal Revenue Code of 1986, as amended.

VRIAC, the Company, we, us and our: Voya Retirement Insurance and Annuity Company, a stock company domiciled in Connecticut, that issues the Contract described in this summary prospectus.

Variable Annuity Account C, the Separate Account: Voya Variable Annuity Account C, a segregated asset account established by us to fund the variable benefits provided by the Contract. The Variable Annuity Account C is registered as a unit investment trust under the Investment Company Act of 1940, as amended, and it also meets the definition of “separate account” under the federal securities laws.

Variable Investment Options: The Subaccounts of Variable Annuity Account C. Each one invests in a specific mutual Fund.

Vested: The amount of money in a participant’s individual account attributable to participant contributions. In an employer-sponsored retirement plan (i.e., 401(a) or 403(b) plan), the Vested amount may include employer matching contributions.

IMPORTANT INFORMATION YOU SHOULD CONSIDER ABOUT THE CONTRACT

OVERVIEW OF THE CONTRACT

This summary provides a brief overview of the more significant aspects of the Contract. Further detail is provided in this summary prospectus, the Contract and the summary or full prospectuses for the Funds being considered. We urge you to read the entire summary prospectus as it describes all material features and benefits of the Contract and your rights and limitations thereunder. It also sets forth information you should know before making the decision to participate in the Contract through your retirement plan. Certain features and benefits may vary depending on the state in which your Contract is issued.

Purpose

The Contract described in this summary prospectus is a group deferred variable and fixed annuity contract. It is intended to be used as a funding vehicle for certain types of retirement plans and to qualify for beneficial tax treatment and/or to provide current income reduction under Tax Code Sections 403(b) and Roth 403(b) plans.

The Contract is designed for Investors who intend to accumulate funds for retirement purposes, and thus is best suited for those with a long investment horizon. The Contract should not be viewed as a highly liquid investment. The value of deferred taxation on earnings grows with the amount of time your money is left in the Contract. For these reasons, you should not participate in this Contract if you are looking for a short-term investment. When considering whether to purchase or participate in the Contract, you should consider your financial goals, investment time horizon and risk tolerance.

Phases of Contract

The Contract has two phases: An Accumulation Phase and an Income Phase.

Accumulation Phase: During the Accumulation Phase, you direct us to invest your Purchase Payments or Account Value among the follow investment options:

Income Phase: During the Income Phase, you start receiving annuity, or Income Phase, payments from your Contract. However, during the Income Phase you will be unable to make withdrawals, and any death benefits and living benefits will terminate. The Contract offers several Income Phase payment options. In general, you may:

Withdrawals will not be allowed during the Income Phase. See “THE INCOME PHASE” in the full Contract Prospectus.

The Variable Investment Options

The Variable Investment Options are Subaccounts within the Separate Account. Each Subaccount invests its assets directly in shares of a corresponding underlying Fund, and each Fund has its own distinct investment objectives, fees and expenses and investment advisers. Earnings on amounts invested in a Subaccount will vary depending upon the performance and fees of the corresponding underlying Fund. You do not invest directly in or hold shares of the Funds. Additional information about each underlying fund is set forth in an appendix to this summary prospectus. See “APPENDIX: FUNDS AVAILABLE UNDER THE CONTRACT.”

There is no guarantee that your Account Value will increase. Depending upon the investment experience of each Fund in which a Subaccount invests, your Account Value may increase or decrease daily. You bear the investment risk for the Funds in which the Subaccounts invest; you will benefit from favorable investment experience but also bear the risk of poor investment performance.

Contract Features

Death Benefit. A Beneficiary may receive a death benefit in the event of your death during both the Accumulation and Income Phases (described above). The availability of a death benefit during the Income Phase depends upon the Income Phase annuity payment option selected. See the “Benefits Available Under the Contract” below.

The death benefit is calculated as of the next time we value your account following the date on which Customer Service receives proof of death and a payment request in Good Order.

Asset Rebalancing Program. Our asset rebalancing program may be available in connection with certain Contracts. Asset rebalancing allows you to reallocate your Account Value in the investments and percentages you identify. There is no additional charge for this program. See ‘THE CONTRACT - Contract Purchase and Limitations - The Asset Rebalancing Program” in the full Contract Prospectus.

Loans. If allowed by the Contract and the plan and subject to the terms and conditions imposed by the plan and the plan’s loan agreement, you may initiate a loan during the Accumulation Phase from your Account Value allocated to certain Subaccounts and Fixed Interest options. Loans are subject to requirements under the Tax Code and related loan regulations, as well as ERISA (if applicable). Further restrictions may apply due to our administrative practices.

Systematic Distribution Options. These allow you to receive regular payments from your account, while retaining the account in the Accumulation Phase. See “SYSTEMATIC DISTRIBUTION OPTIONS” in the full Contract Prospectus.

Withdrawals. During the Accumulation Phase, you may, under some plans, withdraw all or part of your Account Value. Amounts withdrawn may be subject to tax withholding, other deductions, and taxation.

Charges for Advisory Services. A participant may enter into an agreement with an independent investment adviser that will provide agreed-upon advisory services and may arrange to have the advisory fees deducted from the Variable Investment Options, in which case such deductions will reduce the death benefit payable under the participant’s Contract, they may be treated as withdrawals, and they may be subject to federal and state income taxes and a 10% penalty tax. See “CHARGES AND FEES – Charges for Advisory Services” in the full Contract Prospectus.

Taxation. Taxes will generally be due when you receive a distribution. Tax penalties may apply in some circumstances. See “FEDERAL Tax Considerations” in the full Contract Prospectus.

Benefits Available Under the Contract

Name of Benefit	Purpose	Is Benefit Standard or Optional	Maximum Fee	Brief Description of Restrictions/Limitations
Systematic Distribution Options	Allows you to receive regular payments from your account without moving into the Income Phase.	Standard	No additional fee for this benefit.	If not required under the plan, VRIAC may discontinue the availability of one or all of the systematic distribution options at any time and/or change the terms of future elections. This benefit may not be available under your Contract. Participants should refer to their plan documents for available benefits.
Loans	Allows you to borrow against your Account Value.	Standard	Loan Initiation Fee:  $100 per loan.	Loans from your Account Value may be subject to a loan initiation fee, which will not exceed $100 per loan. The loan initiation fee will be deducted from the Vested individual Account Value during the first month of the loan period. We reserve the right to change the loan initiation fee, but not to exceed $100 per loan. This benefit may not be available under your Contract. Participants should refer to their plan documents for available benefits.
Deduction of Advisory Fees from Participant Account	Contract permits adviser retained by participant to have its fees deducted from participant account.	Standard	No additional fee for this benefit.	Advisory fees deducted reduce the amount of death benefit and may be treated as a withdrawal upon proper authorization – see discussion of each death benefit in this table above.   Withdrawal of advisory fees from a participant’s account may be subject to federal and state income taxes and a 10% federal penalty tax.

Purchasing the Contract

To purchase the Contract:

Participating in the Contract

To participate in the Contract:

Allocation of Purchase Payments

The Contract Holder or you, if the Contract Holder permits, directs us to allocate initial Purchase Payments to the investment options available under the plan. Generally, you will specify this information on your enrollment materials. After your enrollment, changes to allocations for future Purchase Payments or transfers of existing balances among investment options may be requested by telephone, electronically at www.voyaretirementplans.com or through such other means as may be available under our administrative procedures in effect from time to time. Allocations must be in whole percentages, and there may be limitations on the number of investment options that can be selected. See “THE Investment Options” in the full Contract Prospectus.

Tax Code Restrictions

The Tax Code places some limitations on contributions to your account. See “FEDERAL Tax Considerations” in the full Contract Prospectus.

When Initial and Subsequent Purchase Payments Are Credited

Initial Purchase Payment. We must accept or reject an application or your enrollment materials within two business days of receipt. If the forms are incomplete, we may hold any forms and accompanying Purchase Payments for five business days, unless you consent to our holding them longer. Under limited circumstances, we may also agree, for a particular plan, to hold Purchase Payments for longer periods with the permission of the Contract Holder. If we agree to do this, the Purchase Payments remain in a non-interest bearing bank account until processed (or for a maximum of 105 days). If we reject the application or enrollment forms, we will return the forms and any Purchase Payments.

Subsequent Purchase Payments. If all or a portion of initial Purchase Payments are directed to the Subaccounts, they will purchase Subaccount Accumulation Units at the Accumulation Unit Value next computed after our acceptance of the applicable application or enrollment forms, as described in “CONTRACT PURCHASE AND PARTICIPATION” in the full Contract Prospectus. Subsequent Purchase Payments or transfers directed to the Subaccounts that we receive in Good Order by the close of business of the New York Stock Exchange (“NYSE”) (normally at 4:00 p.m. Eastern Time) will purchase Subaccount Accumulation Units at the Accumulation Unit Value computed as of the close of the NYSE on that day. The value of Subaccounts may vary day to day. Subsequent Purchase Payments and transfers received in Good Order after the close of the NYSE will purchase Accumulation Units at the Accumulation Unit Value computed as of the close of the NYSE on the next business day.

Withdrawals

Subject to limitations on withdrawals and other restrictions (see “Withdrawal Restrictions” in this section), the Contract Holder, or you if permitted by the plan, may withdraw all or a portion of your Account Value at any time during the Accumulation Phase.

Steps for Making a Withdrawal

The Contract Holder, or you if permitted by the plan, must:

For amounts you withdraw from Account Value allocated to the Subaccounts, we will redeem the number of Accumulation Units needed to fund the withdrawal and reduce your Account Value accordingly. A reduction to your Account Value due to a withdrawal result in a lesser amount available to be annuitized and a lesser death benefit (if your death benefit amount is based on your Account Value).

Calculation of Your Withdrawal

We determine your Account Value every normal business day after the close of the NYSE. We pay withdrawal amounts based on your Account Value either:

Delivery of Payment

Payments for withdrawal requests will be made in accordance with SEC requirements. Normally, we will send your payment no later than seven calendar days following our receipt of your disbursement form in Good Order.

Withdrawal Restrictions

Many plans may have limits on withdrawals that may be made from the plan. Some examples of these limits are listed below:

The Tax Code and/or your plan may impose other limitations on withdrawals. See “FEDERAL Tax Considerations – Distributions – Eligibility” in the full Contract Prospectus.

Systematic Distribution Options

If available under your plan, a systematic distribution option allows you to receive regular payments from your account without moving into the Income Phase. By remaining in the Accumulation Phase, you retain certain rights and investment flexibility not available during the Income Phase. Because the account remains in the Accumulation Phase, all Accumulation Phase charges continue to apply.

Systematic Distribution Options Currently Available

These options may be exercised at any time during the Accumulation Phase of the Contract. To exercise one of these options, the Account Value must meet any minimum dollar amount and age criteria applicable to that option. To determine what systematic distribution options are available, please write or call Customer Service.

Systematic distribution options currently available under the Contract include the following:

Other Systematic Distribution Options

Other systematic distribution options may be available from time to time. Additional information relating to any of the systematic distribution options may be obtained by contacting Customer Service.

Availability of Systematic Distribution Options

If not required under the plan, the Company may discontinue the availability of one or all of the systematic distribution options at any time and/or change the terms of future elections.

Electing a Systematic Distribution Option

The Contract Holder or you, if permitted by the plan, may elect a systematic distribution option. The Plan Sponsor or its delegate generally must provide the Company with certification that you are eligible for a distribution and that the distribution is in accordance with the terms of the plan.

Terminating a Systematic Distribution Option

Once you elect a systematic distribution option, you may revoke it at any time by submitting a written request to Customer Service. Any revocation will apply only to the amount not yet paid. Once revoked, an option may not be elected again until the next calendar year, nor may any other systematic distribution option be elected, unless the Tax Code permits it.

Tax Consequences

Withdrawals received through these options and revocations of elections may have tax consequences. See “FEDERAL Tax Considerations” in the full Contract Prospectus.

Loans

Availability

If allowed by the Contract and the plan and subject to the terms and conditions imposed by the plan and the plan’s loan agreement, participants may initiate a loan during the Accumulation Phase from their individual Account Value allocated to certain Subaccounts and Fixed Interest Options. Loans are not available from Roth 403(b) contracts or accounts (“loanable”). However, under some contracts, participant Roth 403(b) accounts may be included in the calculation of the amount available for loan (“lienable”) but will not be loanable. Some plans restrict loans from your employer account. Amounts available from some Investment Options may be subject to limitations specified in the loan agreement. See “LOANS” in the full Contract Prospectus for additional information.

ADDITIONAL INFORMATION ABOUT FEES

The following tables describe the fees and expenses that you will pay when buying, owning and surrendering or making withdrawals from the Contract. These fees and expenses do not reflect any advisory fee paid to an independent investment advisor retained by a participant, and if such charges were reflected, these fees and expenses would be higher. See “THE INCOME PHASE” in the full Contract Prospectus for fees that may apply after you begin receiving payment under the Contract. Please refer to your Contract specifications page for information about the specific fees you will pay each year based on the options you have elected.

The first table describes the fees and expenses that you may pay at the time you buy the Contract, surrender or make withdrawals from the Contract or take a loan from the Contract. State premium taxes may also be deducted.

Transaction Expenses

The next table describes the fees and expenses that you will pay each year during the time that you own the Contract (not including Fund fees and expenses).

Annual Contract Expenses

The next item shows the minimum and maximum total operating expenses charged by the Funds that you may pay periodically during the time that you own the Contract. A complete list of the Funds available under the Contract, including their annual expenses, may be found in an appendix to this summary prospectus. See “APPENDIX: FUNDS AVAILABLE UNDER THE CONTRACT.”

Annual Fund Expenses

Examples

These examples are intended to help you compare the cost of investing in the Contract with the cost of investing in other variable annuity contracts. These costs include transaction expenses (assuming no loans), annual Contract expenses and annual Fund expenses. They do not reflect any advisory fee paid to an independent investment adviser (if retained by a participant) from a participant’s account, and if such charges were reflected, the costs would be higher.

The following example assumes that you invest $100,000 in the Contract for the time periods indicated. The Example also assumes that your investment has a 5% return each year and assumes the most expensive combination of annual Fund expenses. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

APPENDIX: FUNDS AVAILABLE UNDER THE CONTRACT

The following is a list of Funds available under the Contract. The Funds available to you may vary based on employer and state approval and participants should refer to their plan documents for a list of available Funds.

More information about the Funds is available in the prospectuses for the Funds, which may be amended from time to time and can be found online at https://vpx.broadridge.com/getcontract1.asp?dtype=isp&cid=voyavpx&fid=NVA003240. You can also request this information at no cost by calling Customer Service at 1-800-584-6001 or by sending an email request to ProspectusRequests@voya.com.

The current expenses and performance information below reflects fee and expenses of the Funds, but do not reflect the other fees and expenses that your Contract may charge. Expenses would be higher and performance would be lower if these other charges were included. Each Fund’s past performance is not necessarily an indication of future performance.

HOW TO GET MORE INFORMATION

This summary prospectus incorporates by reference the full Florida University System Optional Retirement Program and the Florida Senior Management Service Optional Annuity Program Contract Prospectus and Statement of Additional Information, each dated May 1, 2024, as amended or supplemented. You can find these documents online at https://vpx.broadridge.com/getcontract1.asp?dtype=isp&cid=voyavpx&fid=NVA003240. You can also obtain these documents at no cost by calling 1-800-584-6001 or by sending an email request to ProspectusRequests@voya.com.

EDGAR Contract Identifier: C000163132