Annuity Glossary: Plain-English Definitions of Every Key Term

Annuity contracts are written in a vocabulary nobody uses anywhere else. This glossary defines every term you'll actually meet — in a quote, an illustration, or the contract itself — with links to our deeper guides where a definition deserves a full article.

If you're brand new, start with what an annuity is and the types of annuities, then keep this page as your reference.

Product Types

• Annuity. A contract with an insurance company: you pay a premium, and the insurer guarantees growth, income, or both. See how annuities work.
• Fixed annuity. An annuity that credits a declared interest rate set by the insurer. Principal never declines with markets.
• MYGA (multi-year guaranteed annuity). A fixed annuity that locks one rate for the entire multi-year term — the annuity world's cousin to a CD. Full guide: what is a MYGA.
• Fixed index annuity (FIA). Credits interest based on an index's movement, subject to caps or participation rates, with a floor that protects principal. Full guide: how fixed index annuities work.
• RILA (registered index-linked annuity). An index-linked annuity that trades some downside protection — via a buffer or floor — for higher upside potential. Losses are possible. Full guide: what is a RILA.
• Variable annuity. Invests premiums in market subaccounts; the value rises and falls with the investments. Full guide: what is a variable annuity.
• Deferred annuity. Any annuity where income starts later, after an accumulation period. Full guide: what is a deferred annuity.
• SPIA (single premium immediate annuity). You pay a lump sum and payments begin within a year. Compare live payouts at the SPIA hub.
• DIA (deferred income annuity). A lump sum now buys income that starts years later — longevity insurance. See the DIA hub.
• SPDA (single premium deferred annuity). A deferred annuity funded with one payment — the structure behind most MYGAs. Full guide: single premium deferred annuities.
• QLAC (qualified longevity annuity contract). A DIA bought with IRA money, up to an IRS dollar limit, that's excluded from RMD calculations until payments start — as late as age 85. Full guide: the QLAC explained.

People, Phases, and Paperwork

• Owner. The person who buys and controls the contract — names beneficiaries, takes withdrawals, pays the taxes.
• Annuitant. The person whose life expectancy sets the payment math. Usually the owner, not always.
• Beneficiary. Who receives the death benefit. How that payout is taxed is its own topic: annuity taxation at death.
• Premium. The money you put into the contract — a single payment or a series of them.
• Accumulation phase. The years the contract grows before income begins.
• Payout (distribution) phase. The period when the contract pays income. The structures you can choose are covered in annuity payout options.
• Annuitization. Converting the contract's value into guaranteed payments. Generally irreversible — you trade the lump sum for the income.
• Free-look period. A state-mandated window after delivery — length varies by state — when you can cancel the contract for a refund.

Rates and Crediting

• Guaranteed rate. The declared interest rate a fixed annuity credits, and how long it's locked. Compare current offers on the live MYGA rate board.
• Renewal rate. The rate the insurer declares after the initial guarantee expires — set at the carrier's discretion, and a key thing to check before buying.
• Guaranteed minimum interest rate. The contractual floor below which renewal rates can never fall.
• Cap rate. The ceiling on index-linked interest in a crediting period. The index may rise more; your credit stops at the cap. See live FIA rates and caps.
• Participation rate. The share of an index's gain you're credited — a percentage applied to the gain rather than a ceiling on it.
• Spread (margin). A fixed amount subtracted from the index gain before interest is credited.
• Floor. The worst crediting outcome a contract allows. On an FIA the floor is typically zero — a down index year credits nothing but loses nothing.
• Buffer. A RILA feature: the insurer absorbs the first portion of an index loss; you absorb the rest.
• Crediting period (index term). The stretch — commonly one or two years — over which index movement is measured before interest is credited.
• Rate change. Carriers reprice constantly. Track movements on the rate changes tracker or the annuity rate index.

Fees, Charges, and Liquidity

• Surrender period. The years during which withdrawing beyond the allowance triggers a charge — usually matching or close to the rate-guarantee term.
• Surrender charge. The fee on excess withdrawals during the surrender period, typically declining each year to zero.
• Penalty-free withdrawal. The amount you can take each year without a surrender charge — commonly the interest earned or a set percentage of contract value.
• Market value adjustment (MVA). An adjustment — up or down — to an early surrender, based on how interest rates moved since purchase.
• M&E charge (mortality and expense). An annual variable-annuity fee covering the insurance guarantees. Estimate fee impact with the annuity fee calculator.
• Rider fee. The annual charge for an optional benefit added to the contract, deducted from the contract value.
• Waiver provisions. Contract terms that lift surrender charges in defined events — commonly nursing-home confinement, terminal illness, or required minimum distributions.

Income and Payout Terms

• Payout option. The structure of annuitized payments — who gets paid, for how long, and what survivors receive. The full decision guide: annuity payout options compared.
• Life-only (straight life). Payments for as long as you live, ending at death. The highest payment per premium dollar.
• Period certain. Payments guaranteed for a set number of years, either on its own or attached to a life payout.
• Joint and survivor. Payments continue over two lives, in full or at a reduced percentage after the first death.
• Cash refund / installment refund. Guarantees your beneficiaries receive at least the premium you paid, minus payments already made.
• Mortality credits. The pooling effect behind lifetime payouts: funds from annuitants who die earlier support payments to those who live longer.
• Income rider (GLWB). An optional benefit guaranteeing lifetime withdrawals without annuitizing — you keep access to the remaining value, for an annual fee.
• GMIB. A guaranteed minimum income benefit — a rider setting a floor on future annuitization income regardless of performance. Full guide: GMIB riders explained.
• Benefit base. The bookkeeping value a rider's income is calculated from — not cash you can withdraw.

Tax Terms

• Tax deferral. Earnings aren't taxed while they stay in the contract. The full picture: how annuities are taxed.
• Qualified annuity. An annuity inside an IRA, 401(k), or similar account — pre-tax money, fully taxable withdrawals, RMD rules. Full guide: what is a qualified annuity.
• Non-qualified annuity. An annuity bought with after-tax money — only earnings are taxed, no contribution limits, no lifetime RMDs. Full guide: what is a non-qualified annuity.
• Cost basis. The after-tax money you put into a non-qualified contract, returned tax-free when withdrawn.
• LIFO (last in, first out). The withdrawal ordering on most non-qualified deferred annuities: taxable earnings come out first, basis last.
• Exclusion ratio. On an annuitized non-qualified contract, the fraction of each payment treated as tax-free return of principal.
• 1035 exchange. A tax-free swap of one non-qualified annuity for another — the standard move when a better contract exists. Strategies: how to minimize taxes on annuities.
• RMD (required minimum distribution). The annual withdrawal the IRS requires from retirement accounts — including qualified annuities — starting at the statutory age.
• 59½ rule. Withdraw taxable annuity money before age 59½ and a 10% additional federal tax generally applies, with limited exceptions.

Safety and Regulation

• Claims-paying ability. Annuity guarantees are promises of the issuing insurer — only as strong as the company behind them.
• Financial strength rating. Independent grades (AM Best and others) of an insurer's ability to pay claims. See how carriers stack up in our annuity company reviews.
• State guaranty association. The state-level backstop that covers annuity contracts up to limits that vary by state if an insurer fails.
• Best-interest standard. The regulatory requirement, adopted in most states, that an annuity recommendation serve the buyer's interest.

Put the Vocabulary to Work

Definitions are the entry fee; the decision is made comparing offers. Start with today's best annuity rates, weigh the pros and cons by product type, and if income is the goal, see which annuity pays the most.