Straight Life Annuity: The Highest Payout, No Legacy

A straight life annuity — the contract your quote sheet may call "life only" or "single life, no refund" — makes the simplest promise in the payout menu: a check for as long as you live, and not one payment more. No survivor benefit, no refund, no legacy. In exchange, it pays the highest guaranteed lifetime income that a given premium can buy.

This article explains where that extra payout comes from, why the mechanism — mortality credits — can't be replicated by an investment portfolio, and how to decide whether the no-legacy tradeoff is one you should actually take. If you're new to how a lump sum becomes an income stream, start with our explainer on how annuitization works and come back.

How a Straight Life Annuity Works

You hand an insurer a premium — usually a lump sum, through a single premium immediate annuity (SPIA) or a deferred income annuity (DIA) — and the insurer promises a fixed payment for the rest of your life. The payment is set at purchase based on your age, sex, the premium, and where payout pricing sits at the time. Once payments begin, the election is locked in.

At your death, the contract ends. If you live to 105, the insurer keeps paying long after your premium is exhausted. If you die two years in, the remaining value stays with the insurance pool. Both outcomes are the same contract working as designed — you bought longevity insurance, not an investment account.

Mortality Credits: Where the Extra Payout Comes From

An insurer pricing a life annuity isn't guessing about one lifespan — it's pricing a pool of thousands. Some annuitants in the pool will die earlier than average. The premium they leave behind doesn't go back to their estates; it stays in the pool and funds payments to the annuitants who live longer than average.

That transfer is called a mortality credit, and it's the reason a life annuity can pay more per year than you could safely withdraw from the same money invested on your own. A do-it-yourself withdrawal plan has to hold reserves against the possibility that you live to 100. The pool doesn't — it knows, statistically, that not everyone will. Pooling converts that certainty into higher income for the survivors.

Mortality credits grow more powerful with age. At 65 they're a modest boost; by 80 they dominate the payout math, which is why longevity insurance gets more compelling — not less — as you get older. And a straight life annuity is the only payout option that captures them in full, because every added guarantee claws some of that pooled money back out for beneficiaries.

Every Guarantee You Add Lowers the Check

Think of life-only as the ceiling. Each protection feature below it buys certainty for your heirs at the cost of starting income:

The size of each gap depends on your age, sex, and current payout pricing, so quote them side by side rather than guessing. Our breakdown of which annuity structures pay the most ranks the whole menu, and the SPIA income estimate tool shows how published payout estimates shift across the options.

Who a Straight Life Annuity Suits

• Single retirees with no dependents on the income. If nobody relies on the payment after you're gone, the survivor protections are dead weight — you'd be paying for insurance you don't need.
• People maximizing income from a fixed slice of savings. If the goal is the largest guaranteed floor under essential expenses, life-only gets there with the smallest premium.
• Healthy people with longevity in the family. Life-contingent contracts reward the long-lived. If your parents reached their 90s and you're in good health, you're on the winning side of the pool.
• Retirees whose legacy is handled elsewhere. If the house, the IRA, or a life insurance policy covers your bequest goals, the annuity is free to do one job: pay you the most income possible.

Who Should Think Twice

• Couples where the survivor needs the income. A life-only check that dies with the first spouse leaves the second one with a sudden income cliff. Compare a joint and survivor annuity instead.
• Anyone in poor health. The pricing assumes average longevity. If yours is likely below average, you're subsidizing the rest of the pool rather than collecting from it.
• People uneasy about the die-early scenario. If losing the premium to an early death would keep you up at night — or spark a family fight — a modest guarantee is worth the payout haircut.
• Anyone annuitizing most of their savings. Life-only makes sense for a slice of a portfolio, not the whole thing. Keep liquid assets outside the contract for emergencies and irregular expenses.

The Middle Ground: Small Guarantees, Small Haircuts

The choice isn't binary. A life annuity with a period certain guarantees payments for a minimum number of years even if you die early, usually for a modest reduction when the period is short. A cash refund annuity promises your beneficiary whatever premium hasn't been paid back yet. Both blunt the worst-case story while keeping most of the life-only payout advantage — quote them alongside the straight life option and look at the actual dollar gaps.

Taxes in Brief

If you buy a straight life annuity with after-tax money, part of each payment is a tax-free return of your premium and part is taxable earnings, split by an exclusion ratio based on your life expectancy. If you buy it with pre-tax retirement money, payments are generally fully taxable as ordinary income. Our guide to the annuity exclusion ratio walks through the math, and the broader annuity taxation guide covers both account types.

Next Step: Price the Tradeoff for Your Age

The premium a straight life annuity demands for a given income — and the gap between it and the guaranteed options — moves with payout pricing, so don't fixate on any number printed in an article. Run your age and premium through the live SPIA estimate tool, check deferred income annuity estimates if income starts later, and weigh annuitizing at all against keeping control of the money in our comparison of annuitization and systematic withdrawals.