A $700,000 Annuity Promises $4,800 a Month for Life. Is It a Good Deal?

A 65-year-old walks into a meeting with an insurance agent holding a $700,000 IRA. The pitch: Hand over the full balance, and get a single-premium immediate annuity (SPIA) paying $4,800 a month for life, $57,600 a year. Guaranteed. No market risk. No spreadsheets. Just a check until you die.

But for most retirees at this savings level, that’s the wrong default, many financial experts say. At $700K, you have room to buy guaranteed income for essentials and keep meaningful capital invested for growth, inflation, and potentially heirs. The real question is how thin a slice to carve off.

This scenario comes up often on retirement forums and call-in shows. A healthy 65-year-old with no pension and an IRA in the high six figures is considering the annuity option. Let’s examine the math and the alternatives:

• Age: 65, single, healthy, no pension
• Assets: $700,000, all in a traditional IRA
• The offer: Full-balance SPIA, $4,800 monthly for life
• Core tension: Longevity insurance vs. flexibility, inflation, and legacy
• What is at stake: Locking up 100% of liquid wealth at one insurer for one fixed payment

SPIA quotes for a 65-year-old single male currently run roughly $680 to $720 per month per $100,000 of premium. At $57,600 a year, simple principal recovery takes about 12 years. That puts the retiree at age 77 before they collect back their own money.

The internal rate of return on a 65-year-old SPIA today lands in the low-to-mid 5% range over normal life expectancy. Compare that to what a retiree can buy this week: the 10-year Treasury near 4.5%, the 30-year just under 5%, and the 52-week T-bill at 3.8%. The SPIA’s edge over Treasuries is real but modest, and the retiree pays for it in liquidity and what the insurer keeps if death comes early.

Don’t forget to factor rising costs into the picture. The inflation rate was 3.8%, as of April. So a $4,800 check in 2026 buys materially less by 2046. Even at the Fed’s 2% target, two decades of compounding erodes roughly a third of purchasing power.

$700,000 invested in a balanced portfolio earning 6% to 7% annually, with $57,600 pulled out each year, still leaves a meaningful balance at age 80 in most return paths. Annuitize everything now and that residual goes to zero by design.

Three Paths Worth Considering

1. Partial annuitization. Annuitize $200,000 to $250,000 to cover essential fixed expenses: housing, utilities, food, Medicare supplements. That slice buys roughly $1,400 to $1,750 a month of guaranteed lifetime income, which combined with Social Security typically covers the non-negotiables. The remaining $450,000 to $500,000 stays in a diversified portfolio for healthcare shocks, travel, inflation hedging, and heirs. You capture most of the longevity insurance for a fraction of the lockup.
2. Joint-life or 10-year period certain. If a larger share must be annuitized, switch the structure. A 10-year period certain typically trims the monthly payment by roughly 5% to 8%, and a 100% joint-life payout reduces it more, but the family stops handing the insurer a windfall if death comes at 68.
3. TIPS ladder plus delaying Social Security. Build a 20-year inflation-protected ladder using TIPS at about 2.1% real on the 10-year and 2.7% real on the 30-year. Then delay Social Security from 67 to 70 for a roughly 24% permanent boost. This builds a guaranteed, inflation-adjusted income floor without signing an insurance contract.

Before You Sign

Three steps that change the outcome:

1. Check the carrier and the guaranty cap. State guaranty associations typically cover only $250,000 per insurer per state. A $700,000 single-carrier SPIA blows past that cap, so spreading across two or three highly rated insurers is standard practice if the annuitized slice goes large.
2. Pull joint-life and 10-year-certain quotes alongside single-life. The difference is often smaller than agents imply, and the protection against early-death forfeiture is meaningful.
3. Avoid the headline mistake. Annuitizing the full $700K at one carrier with no inflation rider, no survivor benefit, and no period certain locks in the worst version of every tradeoff. Partial annuitization captures most of the longevity protection while preserving liquidity, growth, and legacy.