One of the questions I hear most from clients nearing retirement is how to make sure they do not run out of income if they live longer than expected. Fixed annuities exist precisely to solve that concern: they turn a lump sum of savings into guaranteed income, protected from market downturns. This guide explains how they work, their real risks, and when they make sense within a retirement plan.
What a fixed annuity is
A fixed annuity is a contract between you and an insurance company: you hand over a sum of money, either in a single payment or through periodic contributions, and the insurer commits to paying you a guaranteed interest rate for a fixed period, typically 3 to 10 years. Unlike a brokerage account, the principal and the rate of return do not fluctuate with the stock market.
At the end of the guaranteed period, you can typically renew at a new rate, withdraw the money, transfer it to another annuity through a tax-free 1035 exchange, or convert it into an income stream.
Fixed, indexed, and variable: how they differ
A fixed annuity pays a predictable, guaranteed interest rate, with no direct market exposure. An indexed annuity ties part of its return to the performance of a stock market index, such as the S&P 500, but with a cap on gains and a floor that prevents losing principal to market downturns. A variable annuity invests directly in subaccounts similar to mutual funds, so its value can rise or fall with the market, with no principal guarantee.
Each type has a different risk profile, and none is automatically better: it depends on how much certainty you need versus how much potential growth you are willing to trade for that certainty.
How they generate guaranteed lifetime income
When you decide to turn your annuity into income — either by annuitizing the contract or activating a guaranteed lifetime withdrawal benefit (often called a GLWB) — the insurer calculates a periodic payment based on your balance, your age, and the options you choose, and commits to keep paying it for as long as you live, even if the original account balance reaches zero. That is the central appeal against the risk of outliving your savings.
You can choose options such as income for yourself only, joint income that continues for your spouse, or a minimum guaranteed period of payments to beneficiaries if you pass away shortly after income begins. Each option adjusts the size of the periodic payment.
When it makes sense to use them in retirement
Fixed annuities tend to fit best as one piece of a broader retirement plan, not as the sole source of income. They tend to make sense once you already have emergency savings covered, you want to supplement Social Security with additional predictable income, and you value the certainty of a guaranteed payment more than the potential for higher market growth.
A common approach is to allocate a portion of retirement savings — not all of it — to a fixed annuity to cover guaranteed essential expenses, while the rest stays invested with more flexibility and growth potential.
How this relates to a 401(k) rollover
Many people consider a fixed annuity right around the time they are deciding what to do with savings from a former employer's 401(k). It is one of several possible options alongside a traditional or Roth IRA, and it is worth comparing carefully before moving funds. You can review the key steps and questions in our 401(k) rollover checklist, which explains direct and indirect rollovers, fees, and how to compare alternatives.
Availability, cost, benefits, and eligibility vary by person, product, contract, and insurance company, as well as by your service area. Guarantees are subject to the claims-paying ability of the issuing insurance company. Karla Arámburo is not affiliated with or endorsed by Medicare or the federal government.
Important risks and considerations
Liquidity is the most relevant limitation: most contracts have a surrender period of several years, during which withdrawing more than the allowed annual free amount — commonly 10% — triggers a surrender charge that can meaningfully reduce the available value. Withdrawals before age 59½ also typically carry an additional 10% federal tax penalty on the gains, just like other retirement accounts.
Inflation is another factor to consider: a guaranteed fixed payment does not automatically grow with the cost of living, so its purchasing power can decline over the years unless the contract includes an inflation-adjustment rider. That is why a fixed annuity tends to work best as one component of the plan, combined with other income sources that do have growth potential.
How fixed annuities are taxed
Inside a non-qualified annuity — purchased with after-tax money — growth is tax-deferred: you do not pay taxes year to year, only when you withdraw the gains, and that withdrawal is taxed as ordinary income, not as a capital gain. If the annuity is qualified, for example inside an IRA that came from a rollover, the entire withdrawal follows that retirement account's tax rules. This is an area where it is worth coordinating with your accountant or tax preparer.
How I help you evaluate whether an annuity fits your plan
As an independent, bilingual insurance agent licensed to serve families in Orange, Los Angeles, San Diego, and Riverside counties, I compare different fixed annuities from well-rated insurers and clearly explain the rates, surrender periods, income options, and penalties of each contract, in Spanish or English. I do not work with a single product or a single company, so the comparison is honest and tailored to your situation.
You can call or text (619) 321-8733, review our guide on life insurance with an ITIN if you are also interested in additional protection for your family, or schedule a free conversation to review whether a fixed annuity fits your retirement plan. This page is general education, not individualized tax, legal, or investment advice.
Frequently asked questions
What exactly is a fixed annuity?
It is a contract with an insurance company where you hand over a sum of money in exchange for a guaranteed interest rate for a set period and, if you choose, a guaranteed income later. Unlike an investment account, the return does not depend on the market.
What is the difference between a fixed, indexed, and variable annuity?
A fixed annuity pays a set, guaranteed rate. An indexed annuity links part of the return to the performance of a stock market index, with a cap and a floor, without investing directly in the market. A variable annuity does invest in subaccounts similar to mutual funds, so it can gain or lose value with the market.
How does an annuity turn into guaranteed lifetime income?
By 'annuitizing' the contract or activating a guaranteed withdrawal benefit, the insurer commits to paying you a fixed amount periodically — monthly, for example — for the rest of your life, no matter how long you live or how the market performs.
What happens if I need to withdraw my money early?
Most fixed annuities have a surrender period, commonly several years, during which withdrawing more than the allowed free amount triggers a surrender charge. In addition, withdrawals before age 59½ typically carry a 10% federal tax penalty on the gains.
Do fixed annuities protect against inflation?
Not automatically. A guaranteed fixed rate does not grow with inflation, so the purchasing power of a fixed payment can shrink over time. Some contracts offer an inflation-adjustment rider, usually in exchange for a lower initial payout.
How are fixed annuity gains taxed?
Growth inside a non-qualified annuity grows tax-deferred; you pay ordinary income tax only on the gains when you withdraw them, not on the principal you already contributed. If the annuity is qualified, inside an IRA for example, that account's tax rules apply to the entire withdrawal.
Can I lose my money in a fixed annuity?
The principal and the fixed interest rate are guaranteed by the insurance company that issues the contract, not by the market. The guarantee depends on that company's financial strength, so choosing a well-rated insurer is an important part of the decision.