What a Life Annuity Is and How It Works

A life annuity converts a lump sum into monthly payments that last as long as you live

A life annuity is a contract between you and an insurance company. You give the company a sum of money — either all at once or over time — and in return, the company sends you a fixed payment every month for the rest of your life, no matter how long you live. The payment stops when you die.

The insurance company bets that you will die by a certain age. You bet that you will live longer. If you live longer than average, you come out ahead. If you die sooner, the company keeps what remains of your money — which is why life annuities are not the right choice for everyone.

Life annuities are different from other retirement accounts because you cannot access the full amount you put in. Once you buy the annuity, the money belongs to the insurance company, and you receive only the monthly payment. This trade-off — giving up access to your principal in exchange for may provide income — is the core feature that separates life annuities from IRAs, 401(k)s, and other savings vehicles.

Key Takeaways

• A life annuity pays you a fixed amount each month for as long as you live, and the payment amount is set when you buy the contract.
• You cannot withdraw the lump sum you paid in; the insurance company owns the money and sends you only the monthly income.
• The monthly payment is calculated based on your age, gender, current interest rates, and life expectancy tables at the time you purchase.
• If you die before recovering your initial investment, your beneficiary receives nothing unless you chose a contract with a may provide period or survivor benefit.
• Life annuities offer certainty about income but eliminate flexibility and access to your principal.

How the monthly payment is calculated

The insurance company uses four main inputs to set your monthly payment: the amount you invest, your age at purchase, your gender, and current interest rates. A 65-year-old will receive a higher monthly payment than a 55-year-old who invests the same amount, because the company expects to pay for fewer years. Men typically receive higher monthly payments than women at the same age, because mortality tables show men have a shorter average life expectancy.

Interest rates matter because the insurance company invests your money and uses the returns to fund your payments. When interest rates are high, the company can pay you more each month. When rates are low, your payment is smaller. This is why two people buying the same annuity at different times may receive different monthly amounts.

Once you lock in a payment amount, it does not change. If you buy a life annuity at age 65 and receive $1,500 per month, you will receive $1,500 per month at age 75, age 85, and beyond — even if inflation has made that money worth less. Some annuities include a cost-of-living adjustment (COLA) that raises your payment each year, but this option reduces your starting payment.

Life annuity versus other retirement account types

A life annuity differs from traditional IRAs, 401(k)s, and Roth IRAs in several critical ways. The most important difference is that a life annuity guarantees you income for life, while the other accounts do not. With an IRA or 401(k), you control how much you withdraw each year and can leave money untouched. With a life annuity, you receive only the fixed monthly payment and cannot access your principal.

The table below shows how these accounts compare across key features:

Feature	Life Annuity	Traditional IRA	401(k)	Roth IRA
Monthly income may provide for life	Yes	No	No	No
Can withdraw principal anytime	No	Yes (with penalties before 59½)	Yes (with penalties before 59½)	Yes (contributions anytime)
Tax-deferred growth	Yes	Yes	Yes	Yes
Payments taxed as income	Yes	Yes	Yes	No (may have access to withdrawals)
Required minimum distributions at age 73	No	Yes	Yes	No
Beneficiary receives remaining balance	Only with rider	Yes	Yes	Yes

What happens to your money if you die early

This is the biggest risk of a life annuity. If you buy an annuity at age 65 with $300,000 and die at age 72, having received only $84,000 in payments, the remaining $216,000 stays with the insurance company. Your heirs receive nothing unless you purchased a contract with additional protections.

You can reduce this risk by choosing a period-certain annuity or a life annuity with a may provide period. These contracts promise that if you die within a set number of years (commonly 10 or 20 years), your beneficiary will receive the remaining payments or a lump sum. This may provide lowers your monthly payment because the insurance company's risk is reduced.

Another option is a joint-and-survivor annuity, which continues paying your spouse or designated beneficiary for their lifetime after you die. This also reduces your starting payment, sometimes significantly, because the company may be paying for two lifetimes instead of one.

Tax treatment of life annuity payments

How your annuity payments are taxed depends on whether you bought it with pre-tax or after-tax money. If you used funds from a traditional IRA or 401(k) to purchase the annuity, your entire monthly payment is taxed as ordinary income. If you bought it with after-tax money from a savings account, only a portion of each payment is taxed — the part that represents the insurance company's earnings on your money.

The insurance company will send you a 1099-R form each year showing how much of your payment is taxable. You report this on your tax return. Unlike a traditional IRA or 401(k), a life annuity has no required minimum distributions, so you do not have to take payments larger than the contract specifies.

When a life annuity makes sense

A life annuity is most useful if you have other savings or sources of income to cover emergencies and unexpected expenses. The trade-off — may provide income in exchange for no access to principal — works best for people who want to reduce investment risk and are comfortable with a fixed payment that does not grow with inflation.

Life annuities are also common as a payout option from a pension or a 401(k). When you reach retirement age, your employer's plan may offer you the choice between taking a lump sum or receiving monthly payments for life. Choosing the monthly payment is, in effect, buying a life annuity through your employer's plan.

People who live longer than average benefit most from life annuities because they receive more total payments than they invested. Someone who lives into their 90s or beyond will receive far more than their initial purchase price. Conversely, someone who dies in their early 70s will receive less.

Frequently Asked Questions

Can I change my mind after buying a life annuity?

Once you buy a life annuity, you cannot reverse the purchase or get your money back. Some insurance companies offer a short window (typically 10 to 30 days) to cancel without penalty, but after that period, the contract is final. This is why it is important to understand the terms before you commit.

What if I need money for an emergency?

A standard life annuity does not allow withdrawals. Your only income is the monthly payment. If you think you might need access to a larger sum, a life annuity is not the right choice. Other retirement accounts like IRAs and 401(k)s allow withdrawals, though they may carry penalties or taxes.

Do life annuities keep up with inflation?

A basic life annuity does not increase with inflation. Your $1,500 monthly payment stays $1,500 forever. You can purchase a COLA rider that raises your payment each year, but this reduces your starting payment. Without a COLA, inflation erodes the purchasing power of your fixed income over time.

Can I buy a life annuity with money from my 401(k)?

Yes. You can use a 401(k) distribution or roll over funds from a 401(k) into an IRA, then use that IRA to purchase an annuity. The tax treatment remains the same — your payments are taxed as ordinary income because the original money was pre-tax. Some employers also allow you to purchase an annuity directly through the 401(k) plan.

Who should not buy a life annuity?

Life annuities are not suitable if you have a serious health condition that may shorten your life, if you need access to your money for emergencies, or if you want to leave a large inheritance. They are also less attractive in a high-inflation environment, where a fixed payment loses value quickly. A financial advisor can help you weigh whether the may provide income outweighs the loss of flexibility.