Fixed Index Annuities vs. CDs: Growth, Tax Treatment, and Lifetime Income Compared

From 2022 through 2024, the conversation in retirement planning shifted in a direction that had not been seen in over a decade: suddenly, Certificates of Deposit were interesting again.

After more than a decade of near-zero interest rates, the Federal Reserve's rate hiking cycle pushed short-term CD rates above 5% at several major banks and credit unions. For savers who had been earning 0.5% on their savings accounts, a 5% CD felt like a windfall. Millions of Americans moved retirement cash into them.

That window is closing.

As the Fed began cutting rates in late 2024 and continued into 2025, CD rates followed. By mid-2026, the top nationally available 12-month CD rate has dropped below 4.5%, and most standard bank CDs are paying 3.5% to 4%. The 5% era was temporary. It always was. And the retirees who built their income strategy around it are now facing a problem that has a specific name in finance: reinvestment risk.

When your CD matures, you reinvest it at whatever rate is available that day. You have no control over what that rate will be. You do not lock in a high rate permanently. You loan the bank your money for a term, the bank pays you the agreed rate, and when the term ends, you are back in the market taking whatever rate is on offer.

For a retiree who needs reliable income over 20 to 30 years, that is not a plan. It is a coin flip repeated every 12 to 60 months for the rest of your life.

A Fixed Index Annuity solves all three of the problems a CD cannot: it offers index-linked growth potential with no downside, tax-deferred compounding, and the option to convert accumulated value into guaranteed income you cannot outlive — regardless of what interest rates do in 2030, 2035, or 2040.

A Certificate of Deposit is a loan you make to a bank.

You deposit money, the bank agrees to pay you a fixed interest rate for a set term, and at maturity, the bank returns your principal plus interest. FDIC insurance covers up to $250,000 per depositor per institution, making it one of the safest places to park money in the short term.

That is where the advantages end.

A CD does not offer growth beyond the stated rate. If you deposit $100,000 into a 12-month CD at 4.2%, you will have approximately $104,200 at maturity. Not more. The interest is fixed. If the stock market returns 18% that year, you still receive 4.2%.

CD interest is taxable as ordinary income in the year it is earned, even if you do not withdraw it. If you are in the 22% federal bracket, your effective after-tax yield on a 4.2% CD is approximately 3.3%. In a state with income tax, that number falls further.

A CD provides no income for life. When the balance is gone, the income stops. A retiree who deposits $200,000 into a series of CDs and draws $800 per month from them will exhaust that account in approximately 18 to 20 years, depending on the rate environment. There is no guarantee the income continues after that point.

And when the current CD matures in a lower rate environment, the retiree has no choice but to accept a lower rate on the next one.

A Fixed Index Annuity is a contract issued by an insurance company that credits interest based on the performance of an external market index — typically the S&P 500, though many carriers offer multiple index options.

The critical design feature is the floor: your principal and previously credited interest can never be reduced by index losses. In a year where the S&P 500 drops 20%, your FIA earns 0%. You do not lose anything.

In a year where the S&P 500 gains 24%, your FIA credits gains up to a cap or participation rate set by the carrier. A common structure might be a 10% annual cap: if the index earns 24%, you earn 10%. If the index earns 7%, you earn 7%.

This creates an asymmetric outcome that a CD cannot replicate:

• ◆Down years: FIA earns 0%. CD earns its fixed rate.
• ◆Moderate up years: FIA earns the index gain (if under the cap). CD earns its fixed rate.
• ◆Strong up years: FIA earns up to the cap. CD earns its fixed rate.

Over a full market cycle, the FIA wins in most scenarios. And it does it without the reinvestment risk that follows every CD maturity.

FIA growth is tax-deferred, meaning no income taxes are owed on credited interest until funds are withdrawn. This allows compounding to work on the full account balance, including the portion that would otherwise go to taxes each year.

To understand why this matters, consider two retirees — both 60 years old, both with $200,000 to allocate, both planning to draw income beginning at age 70.

Retiree A: CD Ladder Strategy

Retiree A builds a CD ladder, rolling a series of 12-month and 24-month CDs over the next 10 years. Assuming the current rate environment where rates average 4.0% over the decade (accounting for the declining rate trend from the 2023 peak):

$200,000 at 4.0% compounded annually for 10 years:

$296,049 at age 70

That figure is the gross amount. Taxes paid annually on CD interest at a 22% federal rate reduce the effective compounding rate to approximately 3.12%, producing a net after-tax accumulation closer to $272,000.

She now begins drawing from that $272,000. At a 4% safe withdrawal rate: $10,880 per year. That income lasts approximately 25 years before the account is exhausted — assuming consistent 4% returns in the drawdown phase, which is not guaranteed.

Retiree B: Fixed Index Annuity

Retiree B places the same $200,000 into an FIA with a 10% annual cap on the S&P 500 index strategy.

Over rolling 10-year periods, the S&P 500's average annual return has historically ranged from 7% to 14%, depending on entry and exit points. Applying a conservative assumption: in cap-limited years, the FIA earns the cap (10%); in moderate years, it earns the index gain; in down years, it earns 0%.

Using a blended crediting assumption of 6.5% average annual growth (which is conservative relative to historical S&P performance with a 10% cap and a 0% floor), $200,000 grows tax-deferred for 10 years:

$375,364 at age 70

No taxes were paid during accumulation. At withdrawal, ordinary income tax applies only to the portion withdrawn each year.

At a 4% withdrawal rate from $375,364: $15,014 per year — approximately 38% more annual income than the CD ladder, from the same starting amount, over the same time period.

But the more important feature is what comes next.

A CD has no income rider. It has no guaranteed lifetime withdrawal benefit. It cannot promise to pay you $1,200 per month at age 70 regardless of how long you live, what the market does, or what interest rates are in 2041.

A Fixed Index Annuity can.

Most FIAs offer an optional Guaranteed Lifetime Withdrawal Benefit (GLWB) rider that separates the "income account value" from the actual account value. The income account value grows at a guaranteed rollup rate — often 6% to 8% annually, compounded — regardless of what the index does during the deferral period. The rider costs a small annual fee, typically 0.75% to 1.25% of the income account value.

When the owner activates income, they receive a fixed percentage of the income account value every year for the rest of their life — even if the actual account balance is eventually depleted.

Illustrative example (not a guarantee; carrier terms vary):

• ◆Age 60: $200,000 premium, GLWB rider with 7% rollup rate and 1% rider fee
• ◆Income account value at age 70 (after 10 years): approximately $393,430 (7% compounded)
• ◆Lifetime withdrawal percentage at age 70: 5.5% (typical for a 70-year-old)
• ◆Annual guaranteed income: $21,639 per year ($1,803 per month) for life

Even if the retiree lives to 95 — another 25 years of payments — the income continues. Even if the market performs poorly. Even if the actual account balance eventually reaches zero. The guarantee is backed by the claims-paying ability of the insurance carrier, not by market performance.

A CD cannot do any of that. When the money in a CD is gone, the income stops. The retiree either cuts expenses or goes back to work.

The tax comparison between a CD and an FIA is one of the most significant and least discussed aspects of this decision.

CDs: taxed annually on interest earned

Each year, the bank issues a 1099-INT for all interest earned, regardless of whether you withdrew the money. If your CD earned $8,000 in interest, you owe income tax on $8,000 even if you reinvested it. In the 22% bracket, that is $1,760 per year redirected to taxes instead of compounding.

Over 10 years at $8,000 annual interest with 22% annual tax drag, your compounding base is perpetually reduced by the tax payment. The effective after-tax compound growth rate is meaningfully lower than the stated CD rate.

FIAs: tax-deferred until withdrawal

An FIA grows tax-deferred, meaning no taxes are owed on credited interest until you take a withdrawal. The full balance, including all credited interest, continues to compound. You are effectively investing with pre-tax dollars on the growth portion.

The compounding difference between a tax-deferred account and a taxable account — over 10 to 20 years — is substantial. A dollar that compounds at 6.5% tax-deferred for 20 years becomes $3.52. The same dollar compounding at an effective after-tax rate of 5.07% (after a 22% tax drag on annual earnings) becomes $2.71.

On a $200,000 starting balance, that difference produces approximately $162,000 more in the tax-deferred FIA over 20 years, before factoring in any income rider benefit.

A CD is an excellent tool for one specific purpose: storing money you will need in the short term in a place where the principal is guaranteed by FDIC insurance.

An emergency fund. A down payment being saved over 18 months. Cash that will be needed within 3 years for a known expense. These are appropriate CD uses.

What a CD is not appropriate for is serving as the primary growth and income engine for a 20- to 30-year retirement. The math does not support it, and the reinvestment risk means the strategy's performance is determined by Fed policy rather than by any planning decision you make.

The retirees who locked in 5.1% CDs in October 2023 felt smart. The retirees whose CDs matured in early 2026 and rolled them at 3.8% are now recalibrating their income projections. The ones whose CDs mature in late 2027 do not know what rate they will receive.

That is reinvestment risk. A 70-year-old cannot afford to have a core income strategy depend on Fed decisions they cannot predict or control.

Reinvestment risk is the specific danger of having short-term fixed-rate instruments (CDs, Treasury bills, money market funds) as a retirement income strategy in a declining rate environment.

Here is how it plays out in practice:

A retiree at 65 has $400,000 in a series of 12-month CDs paying 4.8%. Annual interest income: $19,200. Comfortable.

Those CDs mature at 66. The best available 12-month rate is now 3.9%. Annual interest income falls to $15,600. The retiree adjusts spending.

At 67, the CDs mature again. Rates are 3.4%. Income: $13,600. A $5,600 per year reduction in just two years from the same $400,000.

At 70, if rates have stabilized at 3.0%, income from the same balance is $12,000 — a 37.5% reduction from the 65-year-old's starting point, despite no change in the invested principal.

A Fixed Index Annuity with a GLWB rider does not have this problem. The income amount is set at activation and remains constant for life (or, in some rider designs, includes an inflation adjustment option). The retiree who turns on income at 70 knows exactly what they will receive at 80 and 90, regardless of what interest rates do.

The most common objection to FIAs from CD-focused savers is: "My CD is FDIC insured. What protects my annuity?"

Every state maintains an insurance guaranty association that protects policyholders if an insurance company becomes insolvent. Coverage limits vary by state but most provide protection of $250,000 per person per insurer for annuity contract values — the same limit as FDIC insurance per depositor per bank.

Unlike FDIC insurance, the guaranty association backing comes from assessments on other insurance companies operating in the state, not from a federal fund. In practice, large insurance carriers that issue annuities are among the most heavily regulated financial institutions in the country, with reserve requirements designed to ensure they can meet obligations across multiple decades.

NAIC data shows that life insurance and annuity companies have a default rate significantly lower than commercial banks over comparable periods, in part because they are required to hold reserves against long-term liabilities rather than leveraging deposits at multiples of their equity base.

The protection is not identical to FDIC insurance, but the risk profile of the underlying institutions is also different. The comparison is more nuanced than "CDs are safe, annuities are risky."

A Fixed Index Annuity is not the right tool for every situation. It carries a surrender charge period, typically 7 to 10 years, during which withdrawals above the free withdrawal allowance (usually 10% per year) trigger a fee. It is not appropriate for money that might be needed in the near term.

FIAs are most appropriate for:

Pre-retirees aged 50 to 65 with a time horizon of 7 to 15 years before needing income, who want market-linked growth potential without downside risk, and who intend to convert the accumulated value to a lifetime income stream at retirement.

Retirees who have more savings than they expect to spend in the early retirement years and want to create a guaranteed income floor for their later years — the period from 80 to 95 when Social Security, health needs, and potential cognitive decline make managing a portfolio difficult.

Savers who are rolling over CD proceeds at a lower rate and looking for an alternative that maintains principal protection while offering better long-term growth potential and income options.

A CD is appropriate for money needed within 3 to 5 years. An FIA is appropriate for money intended to fund retirement income over 15 to 30 years.

For most retirement savers, the right answer involves both: CDs or high-yield savings for short-term reserves and near-term spending, FIAs or similar annuity structures for the portion of retirement assets dedicated to long-term income.

The brief window when CDs paid 5% was not a sign that the era of low returns was over. It was a response to the fastest inflation spike in 40 years. That spike is cooling. The rates are following it down.

The structural reality of the U.S. economy — aging demographics, slower productivity growth, persistent fiscal deficits that bias policymakers toward lower rates — suggests that the rate environment retirees will live through over the next 25 years is unlikely to look like 2023. It is more likely to look like 2015 to 2020, when CD rates routinely paid under 2% and retirees who had built income plans around CD yields were quietly dealing with income shortfalls they had not planned for.

A Fixed Index Annuity that earns 0% in a down year and captures index gains up to a cap in up years is not exciting in the way a 5% CD felt exciting in 2023. But it does not go backward. It compounds tax-deferred. It converts to guaranteed lifetime income when you are ready. And it does not expose your retirement income to whatever the Fed decides in a given quarter.

For the portion of your retirement savings dedicated to income you cannot outlive, that matters more than the rate on a 12-month CD.

All Financial Freedom works with individuals and couples to compare fixed annuity options, index annuity structures, and income rider designs from multiple carriers. A licensed professional will model your projected income from an FIA against your current CD or fixed account strategy and show you the difference over 10, 20, and 30 years. Schedule a free strategy call and let us build a retirement income comparison specific to your numbers.

• ◆FDIC, National Rates and Rate Caps — Weekly Survey: fdic.gov
• ◆Federal Reserve, Federal Funds Rate Historical Data: federalreserve.gov
• ◆LIMRA, U.S. Individual Annuity Sales Survey 2024: limra.com
• ◆Wink's Sales and Market Report, Fixed Index Annuity Sales Trends 2024: winkintelligence.com
• ◆National Association of Insurance Commissioners, State Life and Health Guaranty Association Coverage: naic.org
• ◆IRS, Publication 575: Pension and Annuity Income: irs.gov
• ◆IRS, Topic No. 403: Interest Received: irs.gov
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• ◆Morningstar, Annuity Research: Fixed Index Annuity Performance Analysis: morningstar.com
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