What an Income Annuity Is and How It Works

An income annuity converts a lump sum of money into may provide monthly payments for life

An income annuity is a contract with an insurance company where you give them a sum of money upfront, and they promise to send you a fixed payment every month for the rest of your life. You cannot change the payment amount once it starts, and you cannot get your original money back — the insurance company owns it now. In exchange, you know exactly how much will arrive in your account each month, no matter how long you live or what happens in the stock market.

The payment amount depends on three things: how much money you put in, your age when you buy it, and current interest rates. A 65-year-old who puts in $100,000 will receive a different monthly amount than a 75-year-old with the same $100,000, because the 75-year-old has fewer years left to receive payments. The insurance company uses life expectancy tables to calculate what they can afford to pay.

Income annuities are sometimes called when ready annuities because payments can start within a month or two of purchase. They are different from deferred annuities, which you buy years before payments begin, and different from variable annuities, where your payment amount changes based on investment performance.

Key Takeaways

• You give an insurance company a lump sum, and they send you the same fixed payment every month for life, regardless of market conditions.
• The monthly payment is calculated based on your age, the amount you invest, and current interest rates at the time you purchase.
• Once payments begin, you cannot withdraw your original money or change the payment amount, so this is a permanent decision.
• Income annuities provide certainty about retirement income but eliminate flexibility and access to your principal.
• Different payout options exist, such as payments that stop at your death or continue to a surviving spouse, which affect the monthly amount.

How the payment amount is calculated

The insurance company looks at your age, the lump sum you provide, and the current interest rate environment to determine your monthly payment. Older buyers receive higher monthly payments because statistically they will collect for fewer years. A 70-year-old will get more per month than a 60-year-old from the same $100,000 investment.

Interest rates matter significantly. When interest rates are high, insurance companies can earn more from investing your money, so they can afford to pay you more each month. When rates are low, your monthly payment shrinks. This is why the timing of your purchase affects your income for life.

The insurance company also factors in their costs, profit margin, and the risk that you will live longer than average. They use mortality tables — statistical data about how long people in your age group typically live — to set a payment that lets them stay in business while honoring their promise to you for life.

Single-life versus joint-life payout options

When you buy an income annuity, you choose who receives payments. A single-life annuity pays you a monthly amount for as long as you live. When you die, payments stop completely — your beneficiaries receive nothing, and the remaining balance stays with the insurance company. This option produces the highest monthly payment because the insurance company's obligation ends at your death.

A joint-life annuity (also called a survivor annuity) continues paying a surviving spouse or other named person after you die, usually at the same amount or a reduced amount. This option produces a lower monthly payment because the insurance company may need to pay for two lifetimes instead of one. Some joint-life annuities pay 100 percent to the survivor; others pay 50 or 75 percent.

You can also choose a period-certain annuity, which guarantees payments for a set number of years (such as 10 or 20 years) regardless of whether you are alive. If you die before the period ends, your beneficiary receives the remaining payments. This middle-ground option pays less than single-life but more than joint-life.

What happens to your money after you buy

Once you hand over your lump sum, you no longer own it. The insurance company invests that money in bonds, mortgages, and other fixed-income securities to generate the returns needed to pay you every month. You have no say in how it is invested, and you cannot ask for it back if you change your mind or face an emergency.

The insurance company is legally required to hold reserves and maintain a certain financial strength to may support they can pay you for life. State insurance regulators oversee this, and each state has a guaranty fund that protects annuity holders if an insurance company fails — though the protection has limits, usually $250,000 per person per company.

Your monthly payment is backed by the insurance company's promise and financial stability, not by a separate investment account in your name. This is why the credit rating and history of the insurance company matter when you are deciding whether to buy.

Pros and cons of income annuities

The main advantage is certainty. You know the exact amount arriving each month, and you cannot outlive the income. This removes longevity risk — the fear of running out of money if you live into your 90s or beyond. For people who want to replace a pension or create a may provide income floor in retirement, an income annuity can provide peace of mind.

The main disadvantage is loss of control. You cannot access your principal if you need it for a medical emergency or major expense. You cannot leave the money to your heirs if you die early — with a single-life annuity, the insurance company keeps what remains. You also lose the ability to benefit if investment returns are strong or if you want to adjust your spending.

Income annuities also lock in current interest rates. If rates rise significantly after you purchase, you will regret not waiting. Conversely, if rates fall, you will be glad you bought when you did. There is no way to know which direction rates will move.

Income annuities versus other retirement income sources

An income annuity is one tool among several for generating retirement income. Social Security is similar in that it provides a may provide monthly payment for life, but you do not control the amount — the government sets it based on your earnings history. A pension works the same way: may provide income, but you do not control the amount or the payout structure.

An income annuity differs from a bond portfolio or dividend-paying stock portfolio, where you own the underlying assets, can sell them if you need cash, and can pass them to heirs. Those options offer flexibility but no may provide of income.

Some people use a combination: Social Security and a pension provide a base income, and an income annuity purchased with a portion of savings adds another may provide layer. The remainder stays in investments they can access or leave to family. This approach balances certainty with flexibility.

Tax treatment of income annuity payments

The tax you owe on each monthly payment depends on whether you bought the annuity with pre-tax money (like a rollover from a traditional IRA) or after-tax money (like savings). With pre-tax money, the entire payment is taxable as ordinary income. With after-tax money, only the earnings portion is taxable; the part that represents your original contribution comes back tax-free.

The insurance company will send you a 1099-R form each year showing how much of your payment is taxable. If you bought with after-tax money, they calculate an exclusion ratio — the percentage of each payment that is non-taxable — and that ratio stays the same for the life of the annuity.

Income annuities purchased inside a may have access to retirement account (like a traditional IRA or 401(k)) have different rules. Consult a tax professional about your specific situation, because the timing and structure of your purchase can affect your tax bill.

Frequently Asked Questions

Can I get my money back if I change my mind?

No. Once you purchase an income annuity and payments begin, you cannot cancel the contract or withdraw your principal. Some insurance companies offer a short window (typically 10 to 30 days) to cancel after purchase, but after that period ends, the decision is permanent. This is why it is important to be certain before you buy.

What if I die shortly after buying an income annuity?

With a single-life annuity, your beneficiaries receive nothing — the insurance company keeps the remaining balance. With a joint-life or period-certain annuity, your beneficiary receives the remaining payments or a lump sum, depending on the option you chose. This is a major reason some people choose a joint-life payout even though it reduces their monthly income.

Do income annuities keep up with inflation?

Standard income annuities pay a fixed amount that never increases, so inflation erodes the purchasing power over time. Some insurance companies offer inflation-adjusted annuities where the payment rises each year by a set percentage or tied to the Consumer Price Index, but these start with a lower initial payment. You choose this option at purchase.

How do I know if an insurance company will still be around to pay me?

Check the insurance company's financial strength rating from agencies like A.M. Best, Moody's, or Standard & Poor's. Look for a rating of A or higher. You can also contact your state's insurance department to verify the company is licensed and to check for complaints. Most states have a guaranty fund that protects annuity holders if an insurer fails, though coverage limits explore.

Can I use an income annuity with money from a 401(k) or IRA?

Yes. You can roll over funds from a traditional IRA or 401(k) into an income annuity. This is called a may have access to longevity annuity contract (QLAC) if it meets certain rules. There are contribution limits and age requirements for QLACs, so speak with a financial advisor or tax professional about whether this strategy makes sense for your situation.