Should You Buy an Annuity for Early Retirement? SPIA Break-Even Calculator

A Single Premium Immediate Annuity (SPIA) trades a lump sum for guaranteed lifetime income — essentially buying a private pension. For retirees in their mid-60s or older, SPIAs are a legitimate longevity hedge. For early retirees ages 50–62, the case is murkier: payout rates are lower at younger ages, the opportunity cost of tying up capital is higher, and the break-even age often falls in the mid-70s to mid-80s. You need to run the numbers against your alternatives before committing.

How a SPIA works

You hand a lump sum to an insurance company. They hand you a monthly check for life — or for a guaranteed period, or both. The check size depends on your age, the premium, current interest rates, and the specific features you choose (period certain, inflation adjustment, joint life).

Key features to understand when comparing quotes:

• Life-only: Highest payout, zero inheritance. Payments stop when you die.
• Period certain (10 or 20 years): If you die early, payments continue to a beneficiary. Lower monthly check than life-only.
• Joint life: Continues to a surviving spouse. Lower still.
• COLA rider: Payments increase 1–3%/year. Starts with a much lower initial check — often not worth it vs. a higher initial flat payment invested in real assets.
• Deferred income annuity (DIA / QLAC): You buy today, payouts start at a future date (e.g., 80). Discussed separately below.

Payout rates rise sharply with age because the insurance company expects to make fewer payments. A 55-year-old and a 70-year-old receive very different monthly checks for the same premium:

Rates are illustrative for 2026 based on current interest rate environment. Get actual quotes from multiple carriers before deciding — quotes are free and rates vary significantly.

SPIA break-even calculator

Enter the details from your annuity quote. The calculator shows whether and when the SPIA beats keeping the money invested at various return assumptions.

How SPIA payouts are taxed

After-tax money (taxable account)

When you fund a SPIA with after-tax dollars, the IRS lets you recover your premium income-tax-free over the policy's expected duration. The exclusion ratio = your investment in the contract ÷ expected return.³

• Expected return = annual payment × your age-specific multiple from IRS Pub 939 Table V
• Exclusion ratio = premium ÷ expected return
• Annual tax-free amount = annual payout × exclusion ratio
• The rest of each payment is taxable ordinary income
• Once you've received payments equal to your full premium (typically 25–35 years), every dollar becomes fully taxable

Example: a 60-year-old pays $300,000 for a SPIA paying $20,400/year. Table V multiple at 60 = 24.2. Expected return = $20,400 × 24.2 = $493,680. Exclusion ratio = $300,000 / $493,680 = 60.8%. Annual tax-free = $20,400 × 60.8% = $12,403. Annual taxable = $7,997. After ~24 years (age 84), all payments become fully taxable.

Traditional IRA or 401(k) rollover

If the SPIA is funded from pre-tax retirement money, your investment in the contract is zero — you never paid taxes on those dollars. Every dollar of every payment is fully taxable as ordinary income. This is the simplest tax treatment but the most MAGI-intensive: a $20,000/year SPIA payout from a traditional IRA adds $20,000 to your ACA MAGI and IRMAA calculation, regardless of how the money was originally accumulated.

Roth IRA

A Roth-funded SPIA is the cleanest structure for early retirees: qualified distributions are entirely income-tax-free and don't count toward ACA MAGI or IRMAA. The trade-off is that Roth money is your most valuable tax-advantaged asset — using it to fund a fixed payout rather than continuing to compound tax-free gives up optionality. Most FIRE planners prioritize the Roth conversion ladder over annuitizing Roth assets.

ACA and IRMAA: the SPIA timing trap

Most early retirees manage their ACA MAGI carefully to stay below the 400% FPL cliff ($63,840 single / $86,640 MFJ for 2026).¹ A SPIA adds recurring income to MAGI every year for life — you can't reverse it.

Specific hazards to model before purchasing:

• ACA cliff: Adding $15,000–$20,000 of SPIA income to an already-strained MAGI can eliminate $8,000–$15,000 in annual ACA subsidies permanently. Check this against the four-constraint withdrawal order before purchasing.
• IRMAA lookback: IRMAA uses income from 2 years prior to determine Medicare surcharges. A SPIA purchased at 60 will affect your Medicare premiums starting at 65 — the first year you become eligible. There is no transition relief.
• Roth conversion interference: If you planned to use the golden window (ages 60–72) for large Roth conversions at 12–22% bracket rates, SPIA income permanently narrows that window. A $18,000/year SPIA from a traditional IRA eats $18,000 of your 12% bracket headroom every year — see the Roth conversion ladder.

QLAC: the early retiree's alternative

A Qualified Longevity Annuity Contract (QLAC) is a deferred income annuity purchased inside a traditional IRA or 401(k). You buy it today at a fraction of the cost of a SPIA, and payouts begin at a future date — up to age 85 at the latest. The QLAC balance is excluded from RMD calculations until payouts start.⁴

Why QLACs make more sense than SPIAs for most early retirees:

Example: a 55-year-old puts $100,000 into a QLAC inside their IRA. Payouts begin at age 80 — perhaps $2,500–$4,000/month for life, depending on insurer and rates at time of purchase. The $100K is excluded from RMD calculations for the next 25 years. And they've fully insured the scenario they actually worry about: running out of money at 90.

The remaining portfolio — now $100K smaller but unencumbered — can be managed through the Roth conversion ladder, 0% LTCG harvesting, and the standard withdrawal order without a permanent MAGI anchor.

When a SPIA makes sense for an early retiree

SPIAs are not wrong for early retirees — they're just not right for most early retirees in their 50s. Here's when the case gets stronger:

• You have a pension shortfall: Your guaranteed income (pension + eventual SS) covers only 60% of your floor spending. A SPIA can bridge that floor — but only after confirming it won't push MAGI over the ACA cliff.
• You've already maximized SS delay: Delaying SS to 70 is one of the best annuity purchases available. Only after that should you consider a SPIA for remaining income floor.
• Behavioral considerations are real: If you would actually panic-sell a portfolio during a sequence-of-returns downturn, a SPIA provides a behavioral floor that could protect against human error. But solve this with a bucket strategy first.
• Age 65+, IRA money you won't need for Roth conversions: At 65+, payout rates are meaningfully higher, you're 2–3 years from Medicare (removing the ACA cliff concern), and the SS delay decision is already made. This is the classic SPIA use case.
• High longevity risk: Family history of living to 95+ with limited late-life income flexibility. A SPIA prevents the scenario where a 90-year-old is making portfolio decisions during cognitive decline.