Choosing between an indexed annuity and a fixed annuity comes down to one question: how much certainty do you want in exchange for how much upside? A fixed annuity guarantees a set interest rate for a set number of years. An indexed annuity ties your interest to a market index like the S&P 500, with a floor that prevents losses but caps that limit gains. Both protect your principal. Both grow tax-deferred. What differs is the shape of your returns and how much control the insurer keeps over them year to year.
What a Fixed Annuity Actually Does
A fixed annuity is the simpler product. You hand the insurance company a lump sum, and the company guarantees a specific interest rate for a defined period. A three-year fixed annuity paying 5% will credit exactly 5% each year for three years. Stock market, bond market, recession, boom — none of it changes what you earn. The insurer absorbs the investment risk entirely.
The most common version is a Multi-Year Guaranteed Annuity, or MYGA, which behaves a lot like a bank CD but grows tax-deferred. Guarantee periods usually run three, five, or seven years, with longer commitments generally paying higher rates. As of early 2026, competitive MYGA rates range roughly from 5% to over 6% for three- to seven-year terms. The highest-rated insurers tend to cluster at the lower end of that range; the headline numbers usually come from less-established carriers.
When the guarantee period ends, the insurer offers a renewal rate based on current conditions. That rate won’t drop below a contractual minimum, but it’s almost always lower than what you originally locked in.1Brighthouse Financial. Fixed Rate Annuities If you don’t like the renewal, you can surrender the contract or roll into a new annuity, though surrender charges may still apply if you’re inside the penalty window. Some contracts include a bailout provision that waives surrender charges if the renewal rate falls below a specified threshold. Not every contract has one, so ask before you buy.
What an Indexed Annuity Actually Does
An indexed annuity (sometimes called a fixed indexed annuity, or FIA) takes a different route. Instead of a flat rate, the insurer credits interest based on the performance of a market index. The S&P 500 is the most common benchmark, though contracts may also offer the Nasdaq, Russell 2000, or international indexes.2Fidelity. What Is a Fixed Indexed Annuity Your money is never actually invested in stocks. The index is just a measuring stick.
You don’t get the full index return, though. Three mechanisms limit your upside, and a contract can use one, two, or all three:
- Participation rate. The percentage of the index gain you receive. If the S&P 500 rises 10% and your participation rate is 80%, you’re credited 8%. Typical rates currently fall between 80% and 100% on S&P 500 accounts, though custom or volatility-controlled indexes sometimes advertise rates above 100%.
- Cap. A hard ceiling on the interest credited in a single period. If your cap is 10% and the index rises 15%, you get 10%. Current S&P 500 point-to-point caps on competitive contracts run roughly 9% to 12%.
- Spread (or margin). A flat percentage subtracted from the index gain before interest is calculated. Index gains 8%, spread is 2%, you’re credited 6%.
Here’s the part people miss: the insurer can adjust caps and participation rates at the start of each crediting period. A cap that looks generous today might shrink at your next anniversary. That’s where the unpredictability lives.
How the Insurer Measures the Index
The crediting method matters as much as the cap. The two most common are annual point-to-point and monthly averaging. Point-to-point compares the index value on the first day of your crediting period to the value on the last day, ignoring everything in between. If the index finishes higher, you earn interest subject to the caps and participation rates. If it finishes lower, you’re credited zero — not a loss.3Ameritas. How an Annuity Indexing Strategy Helps with Volatility
Monthly averaging records the index at the end of each month and uses the average to calculate the annual credit. This smooths out volatility and protects you from a scenario where the market tanks the week before your anniversary. The tradeoff is that a strong late-year rally won’t help you as much, because those high values get averaged with eleven other months.
The Zero-Percent Floor
The defining safety feature of an indexed annuity is the 0% floor. In any crediting period where the index drops, your account is credited zero instead of absorbing the loss. If the S&P 500 falls 20% in a year, your balance stays exactly where it was.3Ameritas. How an Annuity Indexing Strategy Helps with Volatility Once interest is credited, it becomes part of your guaranteed value and can’t be taken back by later market drops.
How the Returns Actually Compare
Fixed annuities give you certainty. Lock in 5.5% for five years and you know your $100,000 will grow to roughly $130,700 before fees. No guesswork, no waiting to see what the market does.
Indexed annuities give you a wider range of outcomes. In a strong market year you might earn 8% to 10% after caps and participation rates. In a flat or down year you earn zero. Over a full market cycle, indexed annuities have historically landed somewhere between what a pure fixed annuity and a direct equity investment would produce. But the year-to-year variation is real. You might earn 9% one year, then 0% the next two, then 7%. That’s a psychologically different experience from watching a fixed rate compound steadily.
The comparison gets more nuanced once you factor in the insurer’s ability to change indexed annuity parameters. A fixed annuity’s rate is locked for the guarantee period. An indexed annuity’s cap and participation rate can be reset every year. If the company decides to lower your cap from 10% to 7%, your upside just shrank, and you may not notice unless you read the annual statement carefully.
What’s the Same Either Way
A lot of what people worry about when comparing the two is actually identical between them.
Principal Protection
Both guarantee your principal. You cannot lose your original deposit due to poor market performance or low interest rates. The protection comes from two sources. Insurance regulators require companies to hold capital proportional to the riskiness of their assets, which ensures reserves are there during economic stress.4National Association of Insurance Commissioners. Risk-Based Capital The Standard Nonforfeiture Law for Individual Deferred Annuities adds another layer by requiring every contract to provide minimum cash surrender values and paid-up annuity benefits.5National Association of Insurance Commissioners. Standard Nonforfeiture Law for Individual Deferred Annuities
If an insurer fails, state guaranty associations step in. Most states cover annuities up to $250,000 per person. Some go higher, with several covering up to $300,000 and a handful reaching $500,000.6National Organization of Life & Health Insurance Guaranty Associations. How Youre Protected If you’re putting more than $250,000 into annuities, splitting across carriers from different states is a common way to stay within guaranty limits.
One caveat applies to both: principal protection only holds if you leave the money alone.
Surrender Charges and Liquidity
Neither product is liquid. Both impose surrender charges if you withdraw more than a small percentage during the early years. A typical schedule starts at 6% to 7% in year one and declines by roughly one percentage point annually, reaching zero after six to ten years. Indexed annuities tend to have longer surrender periods because the insurer needs more time to recoup the cost of the hedging that provides your floor protection.
Most contracts include a free withdrawal provision letting you pull up to 10% of your account value each year without penalty. Beyond that, the full charge applies to the excess.
Some contracts also include a market value adjustment, or MVA, that can raise or lower your payout when you surrender early. The MVA compares interest rates at purchase to rates at withdrawal. If rates have risen, the MVA works against you; if rates have fallen, it works in your favor.7Jackson. How a Market Value Adjustment Impacts Your Annuity The mechanism exists because rising rates reduce the value of the bonds the insurer bought with your premium.
Taxes
Fixed and indexed annuities follow the same federal tax rules. Interest grows tax-deferred; you owe nothing while the money compounds inside the contract. Taxes hit when money comes out.
For non-qualified annuities purchased with after-tax dollars, partial withdrawals follow a last-in, first-out rule. The IRS treats every dollar you withdraw as coming from earnings first, and earnings are taxed as ordinary income. You don’t reach tax-free principal until all the accumulated gains have been withdrawn. That makes early partial withdrawals more expensive from a tax perspective than many people expect.
Once you annuitize and start receiving structured payments, an exclusion ratio splits each payment into a taxable portion (earnings) and a tax-free portion (return of premium). The ratio stays the same for the life of the payout.8Office of the Law Revision Counsel. 26 USC 72 – Annuities; Certain Proceeds of Endowment and Life Insurance Contracts
Take money out before age 59½ and the IRS adds a 10% penalty on top of ordinary income tax on the taxable portion. Exceptions cover distributions after death, disability, or payments structured as substantially equal periodic installments over your life expectancy.8Office of the Law Revision Counsel. 26 USC 72 – Annuities; Certain Proceeds of Endowment and Life Insurance Contracts The penalty applies identically to both types.
Payout Options
When you convert either product into income, the menu is the same. Life-only pays the highest monthly amount but stops at death. Joint and survivor continues until the second person dies, at a lower monthly rate. Period certain guarantees a set number of years, with remaining payments going to your beneficiary if you die early. Life with period certain combines the two. Installment refund continues payments for life but guarantees your beneficiary receives at least what you paid in. The insurer sets payment amounts based on your accumulated value, your age, current interest rates, and the structure you pick. Once you annuitize, the decision is generally permanent.
Which One Fits Your Situation
A fixed annuity makes sense when you want absolute predictability. You know your rate, your timeline, and exactly what your account will be worth at the end of the guarantee period. People who are already in retirement or within a few years of it, and who need to know precisely how much income they’ll have, tend to land here. When MYGA rates look attractive relative to CDs and bonds, a fixed annuity can lock in that rate for longer than most banks will offer.
An indexed annuity makes sense when you have a longer horizon and want to capture some market upside without risking principal. The 0% floor means you’ll never have a negative year, but the caps and participation rates mean you’ll never fully keep pace with a roaring bull market either. People who are five to fifteen years from retirement, uncomfortable with direct stock exposure but frustrated by pure fixed rates, are the natural audience.
The mistake most people make is comparing these products to the wrong benchmark. A fixed annuity isn’t trying to beat the stock market. It’s trying to beat CDs and savings accounts on an after-tax basis, and the tax deferral gives it an edge there. An indexed annuity isn’t trying to replicate an S&P 500 index fund. It’s trying to deliver better long-term returns than a fixed annuity while keeping the safety net. Judge each product against what it’s actually designed to replace in your portfolio, and the comparison gets much clearer.