Skip to main content
Annuities

What Is an Annuity? A Guide for Retirement Planning

Pomegra Learn

What Is an Annuity?

An annuity is an insurance contract that converts a lump sum of money (or regular contributions) into a stream of guaranteed income payments, typically lasting for the rest of your life or a specific period. Think of it as the reverse of life insurance: instead of your heirs receiving a payout when you die, you receive regular payments while you're alive. Annuities solve a fundamental retirement problem—the risk of outliving your savings—by transferring longevity risk to an insurance company in exchange for predictable income you cannot outlive.

Quick definition: An annuity is a contract between you and an insurance company that provides guaranteed periodic income payments in exchange for either a lump-sum payment or series of contributions.

Key takeaways​

  • An annuity is an insurance contract that pays you a regular income stream, often for life
  • Annuities transfer longevity risk (outliving your money) from you to the insurance company
  • The four main types are immediate, deferred, fixed, and variable—each with different features
  • Annuities provide guaranteed income but typically lock up your capital and come with fees
  • Annuities are one tool in a comprehensive retirement strategy, not a one-size-fits-all solution

How annuities work​

An annuity operates through a straightforward exchange: you give the insurance company a sum of money (the "principal"), and in return, the company commits to paying you a fixed or variable amount at regular intervals—monthly, quarterly, or annually. The insurance company makes this promise based on mortality tables and investment returns, betting that on average, they'll keep more than they pay out across their entire pool of annuity holders.

The structure is simple but powerful. If you buy a $300,000 annuity at age 65, the insurance company calculates your life expectancy, expected investment returns, and overhead costs, then determines your monthly payment—say, $1,500. You receive $1,500 every month for the rest of your life, regardless of market conditions, your health, or how long you actually live. If you live to 95, you've received payments worth $540,000 on your $300,000 investment. If you die at 75, your heirs may receive a benefit (depending on the contract terms), but the insurance company keeps the difference. Over their entire customer base, the math works in their favor.

The longevity insurance benefit​

The defining feature of an annuity is that it solves longevity risk—the statistical chance that you'll live longer than your savings can support. In traditional retirement planning, you withdraw from a portfolio each year. If you live longer than expected or the market performs poorly early in retirement, you risk running out of money. An annuity guarantees you won't: the insurance company bears that risk.

This is particularly valuable for people with longer-than-average life expectancies or strong family histories of longevity. If your grandparents lived into their 90s, the extra security of guaranteed lifetime income has tangible value. Financial planners often recommend dedicating a portion of your retirement portfolio—perhaps 20–40%—to annuitized income, creating a "floor" of guaranteed payments that cover essential expenses like housing, utilities, and healthcare, while the remainder of your portfolio pursues growth.

Annuity ownership and taxation​

When you purchase an annuity, you become the "annuitant"—the person receiving the income—and you may also be the "owner," or someone else (often a spouse or entity) may own it. This distinction matters for taxation. The income you receive from an annuity is taxed as ordinary income at your marginal tax rate. If you bought the annuity with pre-tax money (like a rollover from a traditional IRA), the entire payment is taxable. If you purchased it with after-tax money, a portion of each payment is a return of principal (not taxed) and the rest is taxable growth.

For example, suppose you bought a $200,000 non-qualified annuity (after-tax money) and the insurance company determines that $1,000 per month is sustainable. If the exclusion ratio (your principal divided by the expected total of all payments) is 40%, then $400 of each $1,000 payment is a tax-free return of principal, and $600 is taxable income.

Annuities versus other retirement vehicles​

Annuities are often compared to bonds, CDs, Social Security, and managed portfolios, but each has distinct tradeoffs. A bond fund offers liquidity and flexibility; you can sell anytime. Social Security provides inflation-adjusted income but offers less customization. A traditional portfolio gives you control and access to your capital but exposes you to longevity risk. An annuity trades liquidity and control for guaranteed income and peace of mind.

The choice depends on your circumstances. Someone with substantial investment knowledge, a long investment horizon, and a low longevity risk (short life expectancy due to health) might prefer a self-directed portfolio. Someone nearing retirement, unfamiliar with investing, or wanting to "set and forget" income might find an annuity's simplicity and guarantee valuable.

The role of the insurance company​

The insurance company uses several tools to make good on its promise. First, it invests the premiums you pay in a portfolio of bonds, mortgages, and other fixed-income securities, generating returns that supplement the income it pays you. Second, it pools annuities across thousands of customers, so the deaths of some and the longer-than-expected lives of others average out. Third, it sets pricing to ensure a profit margin. The company's financial strength is crucial: if it becomes insolvent, your payments are at risk (though state insurance guarantee funds typically protect at least $250,000 per annuitant).

Annuities in historical context​

Annuities are among the oldest financial instruments. Roman emperors sold annuities to fund military campaigns in the 2nd century. The first modern annuity, the Tontine, emerged in France in 1653 as a way for the government to borrow money and investors to gain income. Annuities evolved significantly in the 20th century with the rise of pension systems and, more recently, the shift from defined-benefit pensions (which are, in essence, annuities provided by employers) to 401(k)s and individual retirement accounts. As pensions have declined, personal annuities have grown in importance.

Mermatch decision tree​

Real-world examples​

Consider two retirees: Margaret, age 68, has $400,000 in savings and receives $22,000 annually from Social Security. She's concerned about market volatility and running out of money. She uses $150,000 to purchase an immediate fixed annuity, which generates $750 per month ($9,000 annually). Now her guaranteed income is $31,000 per year, covering her essential expenses, while her remaining $250,000 portfolio can pursue growth for discretionary spending and legacy goals.

In a second scenario, David, age 55, has $600,000 in a 401(k) and expects to retire in 10 years. He purchases a deferred annuity for $200,000, which will begin paying him $1,200 per month at age 65. This ensures that by age 65, he has a floor of guaranteed income while his remaining $400,000 grows for distributions before age 65 or after the annuity payments begin.

Common mistakes​

Buying an annuity too early. Many annuity purchasers are in their 50s or even 40s, at which point the payout rate is quite low (you have many years ahead), and your capital could grow significantly in a diversified portfolio. Annuities make the most sense in your late 60s or later, when guaranteed income becomes more valuable.

Failing to compare quotes. Annuity payments for the same $100,000 principal can vary by 10–20% between insurers. Shopping multiple companies takes an hour and could boost your monthly income by $100–$200 for life. Many people buy the first quote they receive from their financial advisor's preferred carrier.

Choosing variable annuities without understanding subaccount fees. Variable annuities allow you to invest in subaccounts (mutual fund-like pools), but these often have high expense ratios (1–2% annually), combined with an insurance charge of another 1–3%, and mortality and expense fees. A portfolio that costs 0.15% to own suddenly costs 2–4% in an annuity wrapper. The guaranteed income rider (an optional guarantee that your income won't fall below a floor) can add another 0.5–1.5% annually.

Ignoring inflation. A fixed annuity paying $1,500 per month today will still pay $1,500 in 30 years, even if inflation has doubled the cost of living. Some annuities offer inflation-adjusted payments (usually at a lower starting payment), but many don't. Factor inflation into your decision.

Not accounting for other guaranteed income. If you have a pension and receive a Social Security check that covers your essential expenses, buying another annuity might be redundant. The value of an annuity is in risk reduction; if you already have sufficient guaranteed income, its marginal benefit is lower.

FAQ​

Is an annuity the same as a pension?​

No, but they're related. A pension is a defined-benefit plan provided by an employer; the company guarantees you a specific monthly income in retirement. An annuity is a contract you purchase yourself (or through your employer in a 403(b) plan). Both provide guaranteed income and shift investment risk to another entity (the employer or insurance company), but pensions are generally rarer now and annuities are more common for individual retirees.

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

This depends on the annuity type and surrender period. Most annuities have a "surrender period" (typically 5–10 years) during which you can withdraw money, but face a surrender charge—often 7–10% of the withdrawal amount. After the period ends, you can usually withdraw, but you lose the income stream and cannot undo the annuitization. Once you've begun receiving payments, your money is essentially gone; you cannot recover it if you change your mind.

What happens to my annuity if the insurance company fails?​

State insurance guarantee funds step in. Each state protects annuity holders of a failed insurer up to a limit (typically $250,000 per person, per insurer). This means your guaranteed income is protected, though the speed of recovery might involve a temporary disruption. Purchasing annuities from highly-rated insurers (AM Best, Moody's, or S&P ratings of A or higher) reduces this risk.

Can I purchase an annuity inside an IRA?​

Yes. You can buy an annuity inside a traditional IRA, Roth IRA, SEP-IRA, or other retirement account. The annuity's growth is tax-deferred within the account. However, you'll still owe tax on distributions when you withdraw from a traditional IRA, and the annuity's tax benefit is somewhat redundant (the IRA already shelters growth). Annuities inside Roth IRAs are more tax-efficient because qualified distributions are tax-free.

Should I annuitize my entire portfolio?​

Rarely. Financial planners typically recommend annuitizing 20–50% of your portfolio, depending on your other sources of guaranteed income (Social Security, pensions) and your comfort with market risk. This creates a "bucket" strategy: guaranteed income covers essential expenses, and the remaining portfolio pursues growth for discretionary spending and legacy goals. Annuitizing everything leaves no flexibility if you need large sums unexpectedly or if your circumstances change.

Do annuities adjust for inflation?​

Standard fixed annuities do not. Your $1,500 monthly payment stays at $1,500 indefinitely. Some annuities offer "cost-of-living adjustments" (COLA), which increase your payment by a fixed percentage (say, 2% annually) or track inflation. COLA annuities have lower starting payments (perhaps $1,200 instead of $1,500) but provide better long-term purchasing power. Choosing COLA depends on your longevity expectations and whether you have other income sources that inflate.

Summary​

An annuity is an insurance contract that converts capital into guaranteed lifetime income. It transfers longevity risk to the insurance company, ensuring you cannot outlive your payments. Annuities are particularly valuable for retirees seeking predictable income and peace of mind, though they require trading flexibility and capital access for that security. They are one tool among many in retirement planning, not a universal solution.

Next​

→ Immediate vs. Deferred Annuities