A 70-year-old hands an insurance company $250,000 in exchange for a monthly check for life. Two years later, they die. Under a straight life-only single premium immediate annuity (SPIA), the heirs receive nothing. The remaining principal stays with the insurer. That outcome almost never gets highlighted in the marketing materials.
The math on the monthly payout looks compelling, especially with the 10-year Treasury yielding nearly 4.6% and Fed policy holding the funds rate at 3.8%. Payout rates on SPIAs move with those benchmarks, so quotes today run higher than they did when the 10-year sat at around 4% earlier this year.
A life-only SPIA pays the highest income because the insurer keeps every unpaid dollar when you die. The insurer pools thousands of buyers: those who live to 95 subsidize those who die at 72. If you are the 72-year-old, your $250,000 effectively funded someone else’s retirement. For a retiree with children, a surviving spouse, or a charitable intent, that outcome is a real transfer from your family to the insurance company’s mortality pool.
The Core Tension: Income Versus Principal Protection
Every SPIA decision comes down to one tradeoff: how much monthly income are you willing to give up to guarantee that your heirs get something back?
Life-only pays the most. A cash-refund rider guarantees that if you die before receiving cumulative payments equal to the premium, the balance goes to your beneficiary as a lump sum. An installment-refund rider does the same, paying the remainder in continuing installments. A period-certain rider (10, 15, or 20 years) guarantees payments for that term regardless of when you die.
The income haircut for these features is modest, typically in the range of 5% to 10% of the monthly payout depending on age and term.
Running the Cost-to-Heirs Numbers
Consider a 70-year-old buying a $250,000 life-only SPIA. If they die in year two, having collected roughly $35,000 in payments, the heirs receive nothing. The unrecovered principal, on the order of $215,000, stays with the insurer.
Under a cash-refund rider, that same early death triggers a lump-sum payment to the beneficiary equal to the premium minus payments received. Under a 20-year period-certain rider, payments continue to the beneficiary for the remaining 18 years. The monthly check is smaller, and the family gets a defined outcome.
The break-even question is straightforward. If you live to your actuarial life expectancy or beyond, life-only wins on total dollars received. If you die materially early, any of the riders wins for your heirs by a wide margin. The rider functions as cheap term insurance embedded in the annuity.
The Self-Fund Alternative
If legacy is the priority, the cleanest path may be to skip the annuity entirely and self-fund income from a diversified portfolio. At current rates, high-quality bond ladders, Treasuries, and top-tier CDs (well above the national average 12-month CD rate of 1.65%) can generate 4% to 5% yields without surrendering principal. The tradeoff is longevity risk: you carry it, the insurer does not.
Don’t forget about inflation. Social Security’s 2026 COLA came in at 2.8%. A fixed SPIA payout does not adjust. Every year, that monthly check buys less. Over a 20-year retirement, purchasing power erosion is a real cost to both the retiree and any beneficiary receiving continuing payments under a rider.
Model your own numbers before signing anything. The right withdrawal rate depends on your other assets, spouse’s income, and how much legacy actually matters to you.
What to Do Before Signing
- Request two quotes side by side. Ask the agent for the life-only payout and the cash-refund (or 20-year period-certain) payout on the same premium. If the income difference is small, the rider is almost always worth it.
- Decide whether legacy is a stated goal. If heirs matter, a life-only SPIA is the wrong product. Buy the rider or keep the assets invested and draw income yourself.
- Do not annuitize your entire liquid net worth. A common mistake is putting too much into an irrevocable contract. Keep enough outside the annuity to cover emergencies and preserve flexibility for late-retirement medical costs.
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