Mutual of America Interest Accumulation Account

Amounts placed in the Interest Account/Mutual of America Interest Accumulation Account (Interest Accumulation Account) are credited with interest at a rate determined by Mutual of America from time to time, and Mutual of America reserves the right to change the interest rates applicable to amounts held in the Interest Accumulation Account at our discretion, but not below the minimum guaranteed* interest rate discussed below. Your principal and previously credited interest are guaranteed. If you have contributions allocated to the Interest Accumulation Account in a Mutual of America contract, the current effective annual yield is shown on your Account Balance screen on this website.

Current Effective Annual Yield

Individual Retirement Annuity (IRA)

• 3.00% Interest Accumulation Account current effective annual yield.
• Interest Accumulation Account rate is guaranteed never to go lower than 3.00% or 1.50% for all contracts that have a contractual minimum guarantee of, respectively, 3.00% or 1.50%.

There is a $2.00 contract fee charged monthly from the Interest Accumulation Account (or 1/12 of 1% for account balances less than $2,400) which can be waived if you choose to use eDocuments to receive information from us electronically.

Minimum Guaranteed Interest Rate

You can choose to place all, or a portion of amounts held under your IRA contract in the Interest Accumulation Account, which credits interest at a rate that we declare from time to time and which may increase or decrease at our discretion. We guarantee that we will credit interest for the life of the contract to amounts in the Interest Accumulation Account of our General Account at a rate at least equal to the greater of (1) any contractual minimum guarantee provided by the contract or (2) the minimum rate required by applicable state law or, if no state law minimum rate is applicable to a contract, the minimum guaranteed credited interest rate will be set pursuant to National Association of Insurance Commissioners (NAIC) standard nonforfeiture law. The NAIC minimum rate is determined in accordance with a formula and cannot be less than 1.00% or more than 3.00% in any event. We determine whether the application of the formula will change the minimum guaranteed rate each November, and any change is effective the following January 1 for that calendar year. The current minimum rate has been set at 3.00% in accordance with this formula for all contracts that do not have a contractual minimum guarantee of 1.50%. If your contract has a contractual guaranteed minimum rate of 3.00% or 1.50%, the interest rate under your contract will not go below that amount regardless of the minimum rate that is set for a calendar year. In our sole discretion, we may credit a higher rate of interest to your contract amounts in the General Account, although we are not obligated to credit interest in excess of the minimum guaranteed rate. We compound interest daily on your contract amounts in the General Account to produce an effective annual yield that is equal to the stated interest rate. This guarantee is subject to Mutual of America's financial strength and claims-paying ability.

You should consider the investment objectives, risks, and charges and expenses of the variable annuity contract and the underlying investment funds carefully before investing. This and other information is contained in the contract prospectus and underlying funds prospectuses and summary prospectuses, which can be obtained by calling 800.468.3785 or visiting mutualofamerica.com. Read them carefully before investing.

*Guarantees subject to Mutual of America's financial strength and claims-paying ability.