$400,000 Annuity Guarantees $2,500 a Month for Life. Is It Worth It?

A 65-year-old retiree with $400,000 in a rollover IRA and no pension faces a pitch. Hand over the money today and receive $2,500 monthly for life, guaranteed. This is the single-premium immediate annuity, or SPIA, in its purest form. Buying one is among the most consequential and irreversible financial decisions a retiree can make. The SPIA is a legitimate tool, but the question is what gets surrendered in exchange for the guarantee.

A Case Study

• Age 65, single, $400,000 in a traditional IRA, no pension
• Pitch: SPIA paying $2,500 a month ($30,000 a year), single life, no inflation rider
• Concern: sequence-of-returns risk in the first decade of retirement
• Tradeoff: lifetime income guarantee versus liquidity, heirs, and inflation protection

Current SPIA quotes for a 65-year-old single male are running roughly $2,400 to $2,650 per month on a $400,000 premium. The implied payout rate is 7.5% of premium per year.

That 7.5% blends interest with a steady return of the retiree’s own principal rather than representing a true yield. If the annuitant dies early, the insurer keeps the unpaid balance. Recovering the full $400,000 takes about 13 years of payments, landing a 65-year-old at roughly age 78.

Consider the alternatives. A retiree could lock in nearly 5% for 30 years from the U.S. Treasury, keep the principal, and leave it to heirs. The SPIA’s edge comes from mortality credits and the lifetime guarantee.

Inflation is another factor. Core PCE is running near 3.3% year over year, with headline PCE close to 3.8%. Services inflation, which dominates retiree spending through healthcare and housing, has been stuck in the 3.4% to 3.6% range for more than a year. A fixed $2,500 check in 2026 will buy materially less by 2046. At 3% average inflation, that $2,500 has roughly the purchasing power of $1,550 in 20 years.

The opportunity cost is harder to ignore. $400,000 invested in a balanced portfolio earning a conservative 6% annual return, with $30,000 withdrawn each year, would still hold roughly $330,000 to $360,000 after 15 years. The SPIA holder has zero.

Three Alternatives to Consider

1. Joint-life or period-certain instead of single-life. A single-life SPIA pays the most because it ends when the annuitant dies. Adding a spouse on a joint-and-100% basis typically reduces the monthly check by 15% to 20%, bringing $2,500 down to roughly $2,000 to $2,125. A 10-year period-certain rider, which guarantees payments to heirs for at least a decade even if the annuitant dies in year two, usually costs 3% to 7% of the payment. For a married couple or anyone with heirs, these structures are worth pricing.
2. TIPS ladder plus delayed Social Security. A 30-year TIPS ladder currently locks in about 2.7% real on the long end and roughly 2.1% real at 10 years, meaning income that rises with CPI. Pair that with delaying Social Security from 67 to 70 for the roughly 8% per year delayed retirement credit, a permanent boost of about 24%, and the retiree builds an inflation-adjusted income floor without surrendering principal.
3. Annuitize only a slice. Use $120,000 to $160,000 of the IRA to buy a smaller SPIA covering essential fixed expenses (housing, utilities, insurance premiums) and leave the remaining $240,000 to $280,000 in a diversified portfolio for growth, liquidity, and heirs. This captures longevity insurance without betting the entire nest egg.

Before Signing

Three concrete steps before any SPIA contract gets signed:

1. Verify the insurer’s credit rating and state guaranty cap. Most state guaranty associations cover annuity benefits up to $250,000 per insurer per contract owner. A $400,000 single-carrier annuity exceeds that cap in many states. Splitting the premium across two highly rated insurers solves the issue.
2. Pull joint-life and 10-year-certain quotes alongside the single-life number. Agents lead with the highest monthly check, but the structure with a survivor or period-certain feature is usually right for anyone with a spouse, partner, or heirs.
3. Price an inflation rider. A 2% or 3% annual step-up rider lowers the starting check but protects purchasing power. Given that Core PCE has been running above the Fed’s 2% target for the trailing 12 months, a flat nominal payment might be worth it.

The mistake to avoid is annuitizing the entire $400,000 at a single carrier, on a single life, with no inflation rider and no period certain. That maximizes the monthly check and minimizes everything else, including the estate, the spouse’s protection, and the real value of the income stream 15 years from now.