Fixed vs. fixed indexed annuities: what's the difference?

Fixed annuities and fixed indexed annuities (FIAs) share the most important feature in retirement savings: neither exposes your principal to market loss. From there they diverge — in how interest is credited, how predictable the outcome is, and what kind of saver each one serves. This guide compares the two directly so you can see which trade-off fits your plan.

How a fixed annuity credits interest

A traditional fixed annuity — including the popular multi-year guaranteed annuity (MYGA) — pays a declared interest rate, guaranteed for a set period. A 5-year MYGA at 5.4% credits exactly 5.4% per year for five years. You know your ending balance on the day you sign the contract.

Structurally, it works much like a bank CD: deposit, fixed rate, fixed term. The differences favor the annuity in three ways — rates from insurance carriers typically run higher than comparable bank CDs, growth is tax-deferred rather than taxed annually, and at maturity you can roll into a new contract via 1035 exchange without triggering taxes. The trade-off: annuities are not FDIC-insured (guarantees rest on the insurer's claims-paying ability), and surrender charges apply to early withdrawals beyond the free-withdrawal allowance. See our full annuity vs. CD comparison for the head-to-head.

You can compare today's MYGA rates across 60+ carriers here — rates change frequently with the interest rate environment.

How a fixed indexed annuity credits interest

A fixed indexed annuity credits interest based on the performance of a market index — most commonly the S&P 500 — without ever investing your money in the market. When the index rises over a crediting period, you receive a portion of that gain. When the index falls, you receive zero interest for that period — but you lose nothing. Your principal and all previously credited interest are locked in.

The "portion of the gain" is defined by one or more crediting limits:

Cap: the maximum interest you can earn in a period. With a 10% cap, an 18% index gain credits 10%; a 6% gain credits 6%.
Participation rate: the share of the index gain you receive. At 60% participation, a 10% index gain credits 6%.
Spread (or margin): a percentage subtracted from the index gain before crediting. With a 2% spread, an 8% gain credits 6%.

Two details matter when comparing FIA quotes: index calculations exclude dividends (a meaningful part of total S&P 500 returns), and carriers can usually adjust caps and participation rates at each renewal period — so ask what the renewal history looks like, not just the first-year teaser.

Side-by-side: fixed annuity vs. FIA

Predictability — Fixed annuity: total; the rate is contractual. FIA: variable; depends on index performance and crediting terms each period.
Growth potential — Fixed annuity: moderate and locked. FIA: higher ceiling in strong index years, zero floor in weak ones.
Principal risk — Both: none from market performance. Surrender charges apply to early exits on both.
Complexity — Fixed annuity: simple; one number. FIA: moderate; caps, participation rates, index choices, and crediting methods require comparison.
Typical fit — Fixed annuity: known money for a known date; CD alternative. FIA: longer-horizon money seeking upside without downside.
Typical term — Fixed: 3–7 years. FIA: 7–10+ years.

Which one is right for you?

Choose a fixed annuity (MYGA) when you want a known, guaranteed outcome — especially for money you'll need at a specific time, or when locking today's rates matters more than chasing upside. It's the cleaner instrument for the conservative slice of a bucket strategy covering years four through ten.

Choose an FIA when your horizon is seven to ten years or longer, you want growth potential above declared fixed rates, and you can accept years of zero credit as the price of that potential. FIAs also commonly offer optional lifetime income riders — see our guide to annuity riders — which can convert the contract into a guaranteed lifetime income stream.

Many retirees sensibly hold both: a MYGA ladder for near-term certainty, an FIA for longer-horizon growth. The split depends on your income gap, liquidity needs, and how much certainty you're willing to trade for upside.

The questions to ask before buying either

What is the surrender schedule, year by year, and what is the free-withdrawal allowance?
For a MYGA: does the rate guarantee period match the surrender period? What happens at renewal?
For an FIA: what are the current cap/participation rates, are they guaranteed or adjustable, and what is the carrier's renewal-rate history?
What is the carrier's AM Best rating? (Our carrier financial strength guide explains what the ratings mean.)

All guarantees are backed by the claims-paying ability of the issuing insurance company. If you'd like side-by-side quotes on both product types for your situation, a licensed agent can run them across 60+ carriers — free, no obligation.

Frequently Asked Questions

Can I lose money in a fixed indexed annuity?

Your principal is not exposed to market loss — in a down index year you receive zero interest but lose nothing. You can, however, lose money to surrender charges if you withdraw more than the free-withdrawal amount during the surrender period, and optional rider fees reduce account value.

Do fixed indexed annuities really earn market returns?

No — they credit a limited portion of index gains via caps, participation rates, or spreads, and index calculations exclude dividends. Over time, expect returns somewhere between fixed annuity rates and full market returns, with no negative years.

Which pays more, a MYGA or an FIA?

It depends on the period. A MYGA's rate is guaranteed and known up front. An FIA may credit more in strong index years and zero in weak ones. Over a full market cycle, results depend on the FIA's crediting terms, renewal-rate behavior, and index performance.

Are fixed and fixed indexed annuities FDIC insured?

No. Annuities are not bank products and are not FDIC-insured. All guarantees are backed by the financial strength and claims-paying ability of the issuing insurance company — which is why checking the carrier's AM Best rating matters before you buy.