SPIA vs Pension Annuity: Should You Buy an Annuity with Your Pension Lump Sum? (2026)

You took the pension lump sum — rolled it to an IRA, now you control the money. But part of what you gave up was the certainty of a monthly check for life. A Single Premium Immediate Annuity (SPIA) is the insurance industry's version of that monthly check. You hand a lump sum to an insurer and they pay you — and optionally your spouse — for life. The question is whether the SPIA economics make sense compared to simply drawing down your IRA, and how a commercial annuity from an insurer compares to the pension guarantee you left behind.

Quick orientation: This guide is for people who have already taken — or are seriously considering — the pension lump sum and are now asking whether to buy a SPIA with some or all of that money to recreate guaranteed income. If you haven't yet decided between lump sum and annuity, start with the Lump Sum vs Annuity Calculator or the Pension Lump Sum vs Annuity Guide.

What is a SPIA

A Single Premium Immediate Annuity is the simplest annuity product in existence. You pay one lump-sum premium to a life insurance company. In exchange, the insurer sends you a fixed monthly (or quarterly) payment for a specified period — typically for the rest of your life, with optional provisions for your spouse or a guaranteed minimum number of payments.

Payments begin within one month to one year of purchase (hence "immediate"). The income stream is contractually guaranteed — you cannot outlive it. There are no investment decisions, no market exposure, no account balance to manage.

SPIA payout options

Life-only. Highest monthly payment. Stops at your death, even if you die after just one payment. No residual value for heirs.
Life with period certain. Payments guaranteed for at least N years (typically 10 or 20). If you die before N years, your beneficiary receives the remaining payments. Lower monthly amount than life-only.
Joint-and-survivor. Payments continue at 50%, 75%, or 100% of the original amount for as long as either you or your spouse is alive. Lower monthly amount — the same trade-off as the J&S election in your original pension plan.
Inflation-adjusted. Some SPIAs include an annual cost-of-living adjustment (typically fixed percentage, e.g., 2% or 3% per year, or tied to CPI). The starting payment is lower to fund future increases.

How SPIA payout rates are determined

The insurer calculates your monthly payment based on four inputs: the premium you pay, your age at purchase, your gender (in states where gender-distinct pricing is permitted), and current long-term interest rates. Higher interest rates produce higher monthly payments — which means the 2024–2026 rate environment has been favorable for SPIA buyers compared to the near-zero-rate 2010s.

Actual payout rates vary across insurers and are quoted in real time. You should compare quotes from multiple carriers — even small differences in annuity payout rates compound significantly over a 20-year retirement.

The critical tax distinction: where does the premium come from?

This is the most important and most frequently misunderstood piece of SPIA planning for pension lump-sum recipients. The tax treatment of your monthly SPIA payments depends entirely on whether the premium is pre-tax money (from your IRA rollover) or after-tax money.

SPIA funded from a traditional IRA rollover: fully taxable

If you rolled your pension lump sum into a traditional IRA — which is the most common outcome — every dollar in that IRA is pre-tax money. You never paid income tax on it going in. When you use that IRA money to purchase a SPIA, 100% of every monthly payment is taxable as ordinary income. The IRS exclusion ratio does not apply because there is no after-tax basis to recover.¹

This is identical to taking IRA distributions — and in practice, that's essentially what it is. The insurer draws the money from your IRA (a reportable distribution) and converts it into a stream of taxable payments. From the IRS's perspective, you're just receiving a structured series of IRA withdrawals.

SPIA funded from after-tax savings: exclusion ratio applies

If you fund a SPIA with after-tax money — money in a taxable brokerage account, or a Roth IRA distribution (already taxed) — the IRS exclusion ratio applies under IRC § 72. Each monthly payment contains two components:¹

Return of principal (tax-free portion): Investment in the contract ÷ expected return.
Interest/earnings (taxable portion): The remainder.

Example: You fund a $400,000 SPIA with after-tax money. Your life expectancy at purchase is 20 years. The insurer will pay $2,200/month × 240 months = $528,000 expected return. The exclusion ratio is $400,000 ÷ $528,000 = 75.8%. So 75.8% of each $2,200 payment ($1,667) is tax-free, and 24.2% ($533) is taxable as ordinary income — until your cumulative tax-free payments equal your $400,000 principal. After that, 100% of each payment is taxable.¹

Most pension lump-sum recipients roll to a traditional IRA, so they'll likely be in the fully-taxable category. But if you have a pension with after-tax employee contributions, you may have some after-tax basis in the rollover — a separate analysis that a tax advisor or CFP should work through with you.

State income tax trap: Many states exempt pension income from state income tax but do not exempt commercial annuity (SPIA) income. If you live in a state with pension exemptions — Illinois, Pennsylvania, Mississippi, Alabama, Hawaii, Iowa, Michigan — your original pension payments would have been state-tax-free, but SPIA payments from an IRA rollover may be fully taxable at the state level. This can cost $2,000–$6,000/year in state taxes depending on your payout and state rate. See the State Income Tax on Pension Income Guide.

SPIA vs your original pension: what you're comparing

Feature	Original pension annuity	Commercial SPIA
Insurer	Your employer's pension plan (ERISA-protected)	Life insurance company (state-regulated)
Bankruptcy protection	PBGC guarantees up to $7,789.77/month at age 65 (2026)²	State guaranty association: typically $250,000 present value per insurer³
COLA / inflation	Often none (fixed), or COLA in public plans	Optional at lower starting payout
Survivor benefit	J&S election at 50/75/100% — had to be elected at retirement	Can elect joint-and-survivor on new SPIA purchase
Flexibility	None — fixed once elected	None — fixed once purchased; no cash surrender value typically
Tax treatment (typical)	100% ordinary income (employer contributions) unless employee after-tax basis	100% ordinary income if IRA-funded; partial exclusion if after-tax funded
Heirs receive	Nothing (unless period-certain was elected)	Nothing (life-only); remaining payments (period-certain)
IRR / break-even	Depends on segment rates at departure	Depends on current interest rates and your longevity

Insurer risk: state guaranty associations vs PBGC

Your original pension was backed by PBGC (Pension Benefit Guaranty Corporation), a federal agency that insures defined-benefit pensions. For 2026, the PBGC maximum single-employer guarantee is $7,789.77 per month for a 65-year-old with a straight-life annuity — a very high ceiling that protects most corporate pension recipients in full.²

SPIAs are not backed by PBGC. They are backed by the life insurance company's own assets and regulated at the state level. If the insurer becomes insolvent, policyholders are protected by their state's Life and Health Insurance Guaranty Association — but coverage is limited. Most states guarantee $250,000 in the present value of annuity benefits per owner, per insurer.³

If you're purchasing a large SPIA — say, from a $900,000 lump sum — you can limit insurer concentration risk by splitting the purchase across two or three highly-rated carriers (each below your state's $250,000 threshold). This is called annuity laddering by insurer and is a standard risk-management technique. Ratings from AM Best, S&P, and Moody's should be part of insurer selection.

Practical implication: For pension recipients whose original monthly benefit was $3,000–$6,000/month — well under the PBGC maximum — the insurer-risk comparison typically favors the pension. A SPIA from a highly-rated insurer carries more credit risk than a PBGC-backed pension guarantee. This doesn't mean SPIAs are unsafe, but it's a real structural difference.

The QLAC alternative: deferred income from your IRA

If your goal is guaranteed future income — not immediate income — a Qualified Longevity Annuity Contract (QLAC) may be a better fit than a SPIA. A QLAC is a special type of deferred income annuity purchased inside your IRA. It begins payments at a specified future date (up to age 85) and, critically, the premium you use to buy a QLAC is excluded from your Required Minimum Distribution (RMD) calculation until income starts.⁴

For 2026, the maximum QLAC premium across all your IRAs is $210,000 per person (IRS Notice 2025-67).⁴ A married couple can shelter up to $420,000 combined. This can meaningfully reduce early RMDs while securing guaranteed income starting later — useful if you've taken a large pension lump sum and expect RMDs to push you into higher brackets or IRMAA tiers in your 70s.

Unlike a standard SPIA purchased from an IRA, the QLAC is specifically designed for within-IRA use and carries the RMD exclusion benefit. The trade-off: no payments until the deferral date you specify, and if you die before income begins, a return-of-premium provision (if elected) gives your heirs the premium back.

When a SPIA makes sense after taking the pension lump sum

You want guaranteed income but don't trust your own investment discipline

A rolled IRA requires ongoing decisions: asset allocation, withdrawal timing, sequence-of-returns management. A SPIA removes all of that. If the behavioral risk of a large IRA feels like a liability — or if a surviving spouse is not confident managing investments — converting a portion of the rollover to a SPIA provides guaranteed income without ongoing management. This is the "income floor" approach to retirement planning: cover essential expenses with guaranteed sources (pension, Social Security, SPIA), invest the rest.

You want to add an annuity stream your spouse can count on if you die first

You elected life-only on your pension (highest payout), which means your spouse receives nothing after your death. A SPIA with a joint-and-survivor option can fill that gap — providing your spouse guaranteed income from the rolled funds without life insurance complexity. This is a cleaner alternative to the pension maximization strategy when you've already taken the lump sum.

Longevity insurance: living past 85

Sequence-of-returns risk cuts both ways — but the risk of living a very long time (to 92 or 95) is real and potentially expensive. A SPIA life-only option or a QLAC that begins at 80 or 85 provides longevity insurance: guaranteed income for the years most likely to deplete a self-managed portfolio. You don't need to annuitize everything — just enough to cover the essential income floor if the portfolio runs dry.

Managing IRMAA and RMD risk

A SPIA purchased from after-tax (non-IRA) money creates an income stream that doesn't increase your IRA balance — and therefore doesn't increase future RMDs. Annuitizing after-tax assets can reduce the IRMAA and RMD spiral risk from a large IRA rollover. This is a more advanced tax-planning consideration covered in the IRMAA and Medicare guide and RMD planning guide.

When keeping the IRA without a SPIA makes more sense

You have other guaranteed income covering essential expenses

If Social Security plus your partial pension (or federal pension annuity) already covers your monthly fixed expenses, you don't need a SPIA to sleep at night. The IRA can stay invested for growth, Roth conversions, and estate transfer — none of which a SPIA provides. Annuitizing when you already have sufficient guaranteed income just locks up flexibility for no marginal benefit.

You have a strong desire to leave assets to heirs

A life-only SPIA has zero residual value — exactly like your original pension. If leaving wealth to children or charities is a priority, the IRA is a superior vehicle. Under current law (post-SECURE 2.0), non-spouse beneficiaries must distribute inherited IRAs within 10 years, but that's still significant flexibility compared to a SPIA that vanishes at your death.

Your health is below average

SPIA pricing is based on standard life expectancy tables. If you have a serious health condition that shortens your life expectancy — cancer, heart failure, major organ disease — the implied break-even age of a SPIA may be far beyond your realistic lifespan. In this scenario, you'd be overpaying for longevity protection you won't use. Some insurers offer "impaired-risk" SPIAs with higher payouts for people in poor health, but this requires underwriting.

Interest rates may be peaking

SPIA payouts are tied to long-term interest rates. If rates are elevated at the time you're considering a SPIA, your payout may be favorable — but once purchased, that rate is locked in. If rates subsequently rise further, newer SPIA buyers will receive better payouts. This is the rate-timing risk of annuitization: there's no guarantee the rate environment today is the best you'll see. A phased annuitization approach — buying smaller SPIAs over several years — manages this risk.

A practical decision framework

Define your income need. What guaranteed income — above Social Security — do you need to cover essential monthly expenses (housing, food, healthcare, insurance)? That's the income floor your SPIA, if any, should target.
Check existing sources. Social Security + any remaining pension annuity + any deferred FERS/CSRS benefit. Do they cover the floor? If yes, SPIA is optional.
Size the gap, not the total lump sum. If you need $1,200/month of additional guaranteed income, you don't necessarily need to annuitize your entire $700K IRA. A $200K SPIA at favorable rates might deliver that — leaving $500K invested.
Compare funding sources: IRA vs taxable. If you have after-tax money (taxable brokerage, Roth distributions), funding a SPIA from there gets you the exclusion ratio. Otherwise all SPIA income is fully taxable.
Evaluate QLAC if income is needed later, not now. QLAC is better suited for people who don't need income immediately but want to protect against outliving their IRA after RMDs start eroding it.
Compare quotes across multiple carriers. SPIA payout rates vary meaningfully between insurers. Always get quotes from at least 3–5 carriers. Factor insurer ratings into the decision.
Model the tax impact. Before purchasing, run the SPIA income through your full tax picture: federal brackets, state tax (some states don't exempt SPIA income the way they exempt pension income), IRMAA thresholds, and Social Security provisional income.

What a fee-only advisor brings to this decision

Commission-based insurance advisors earn 2–4% of the premium on SPIA sales. A $600,000 SPIA premium pays the selling agent $12,000–$24,000. This creates a meaningful incentive to recommend annuitization even when staying invested would serve the client better. Fee-only advisors — who charge flat fees or hourly rates and earn nothing from insurance sales — can run the same analysis without that conflict.

Specifically, a fee-only planner will model: (1) the implied internal rate of return of the SPIA at various longevity assumptions, (2) the tax impact across IRA vs taxable funding sources, (3) the IRMAA consequences of each approach, (4) whether a QLAC within your IRA achieves similar goals more tax-efficiently, and (5) how the decision interacts with Roth conversion planning. That's the full picture — not just "here's a quote."

Get your pension lump sum and annuity decision modeled

A fee-only advisor with no commission interest in the outcome runs your actual numbers: SPIA vs. IRA drawdown vs. QLAC, tax impact of each, IRMAA consequences, and how it interacts with your Social Security timing and Roth conversion window.

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Sources

SPIA payout rates vary daily by insurer, age, gender, and state. All rate references in this guide are illustrative. Obtain current quotes from licensed carriers before making any purchase decision. Values verified as of May 2026.