Immediate Annuities (SPIAs): Turn a Lump Sum Into Lifetime Income

What Is an Immediate Annuity?

Here's a concept that's been around for literally thousands of years (ancient Romans used them): you give a company a pile of money, and they pay you a regular income for the rest of your life. That's an immediate annuity.

Formally known as a single premium immediate annuity (SPIA), it's the simplest annuity you can buy. No accumulation phase. No subaccounts. No crediting methods. No index linking. You write a check. They start sending you checks back. Every month, for as long as you live.

The word "immediate" means exactly what it sounds like — income begins within one payment period (typically 30 days) after you fund the contract. Compare this to a deferred annuity, where your money grows for years before you ever take income.

SPIAs are the closest thing most Americans can get to a traditional pension. Your employer probably isn't offering you a defined benefit plan anymore. Social Security covers some of your needs but rarely all of them. A SPIA fills the gap: guaranteed, predictable income that arrives like clockwork regardless of what the stock market, the economy, or the headlines are doing.

It's also the annuity type that requires the most psychological comfort. You're handing over a significant sum of money — $100,000, $200,000, sometimes more — and you can't get it back as a lump sum. That's a big ask. So let's make sure you fully understand what you're getting in return.

How SPIA Payouts Are Calculated

Insurance companies don't just pick a number out of thin air. Your payout is calculated based on three primary factors:

1. Your Age (and Gender)

Older buyers get higher payments. Why? Because the insurance company expects to make fewer payments. An 80-year-old will receive a significantly higher monthly payment than a 65-year-old for the same premium — the company's expected payout period is shorter.

Gender also matters in non-qualified contracts. Women statistically live longer than men, so they receive slightly lower payments for the same premium (more expected payments). In qualified contracts (IRA-funded), unisex rates are used.

2. Interest Rates at the Time of Purchase

SPIAs are essentially bonds from the insurance company's perspective. They invest your premium in high-quality fixed income, and the yield on those investments directly impacts your payout. When interest rates are high, SPIA payouts are more generous. When rates are low, payouts shrink.

This is why the interest rate environment at the time of purchase matters so much. A SPIA bought in a 6% rate environment will pay meaningfully more than one bought in a 3% environment — and you're locked in for life.

3. The Payment Option You Choose

The more protection you add (period certain guarantees, refund features, joint life coverage), the lower your monthly payment. The insurance company is taking on more risk, so your income reflects that. Life only — the riskiest option for you — pays the most.

Payment Options Explained

This is where your decisions really shape the outcome. Every SPIA offers several payment structures. The one you choose determines your income amount, what happens when you die, and whether a beneficiary receives anything.

Life Only (Straight Life)

How it works: You receive payments for as long as you live. When you die, payments stop. Period. Nothing goes to your beneficiaries.

The payout: Highest of all options. Because the company's obligation ends at your death, they can afford to pay you more per month.

Who it's for: People who want maximum income and either have no dependents, have already provided for their heirs through other means (life insurance, other assets), or simply prioritize their own retirement security.

The risk: If you die shortly after purchasing, the insurance company keeps the remaining premium. This is the scenario that terrifies people — and it's the trade-off for the highest possible income.

Period Certain (5, 10, 15, or 20 Years)

How it works: Payments are guaranteed for a specific number of years regardless of whether you're alive. If you die during the period, your beneficiary receives the remaining payments. After the period ends, payments stop — even if you're still alive.

The payout: Depends on the period length. Shorter periods pay more; longer periods pay less.

Who it's for: People who want guaranteed income for a defined planning period rather than for life. This is less common for retirees and more common for specific financial planning needs.

Life With Period Certain

How it works: This is the most popular compromise. You receive payments for life, BUT if you die within the certain period (typically 10 or 20 years), your beneficiary receives the remaining payments until the period ends.

The payout: Lower than life only, higher than period certain alone. A life-with-10-year-certain option might reduce your payment by 3%–5% compared to life only. A 20-year certain period reduces it more — perhaps 8%–12%.

Who it's for: People who want lifetime income but also want protection against the "hit by a bus on day two" scenario. This is the sweet spot for most SPIA buyers.

Joint and Survivor Life

How it works: Payments continue as long as either you OR your spouse is alive. When one spouse dies, the survivor continues receiving income (either the full amount or a reduced percentage — commonly 100%, 75%, or 50% of the original payment).

The payout: The lowest of all options, because the insurance company is covering two lifetimes. A 100% joint-and-survivor option pays significantly less than a single-life option — often 15%–25% less.

Who it's for: Married couples who depend on the income for joint living expenses. If the higher-earning spouse dies, the survivor still needs income. Joint-and-survivor ensures it continues.

Cash Refund and Installment Refund

How it works: If you die before receiving payments totaling your original premium, the remaining balance goes to your beneficiary — either as a lump sum (cash refund) or as continued payments (installment refund).

The payout: Slightly lower than life only, but you're guaranteed to get at least your original investment back between you and your beneficiary.

Who it's for: People who can't stomach the possibility of the insurance company "keeping" a large portion of their premium.

Taxation of SPIA Payments: The Exclusion Ratio

Here's a genuinely favorable aspect of non-qualified SPIAs. Not all of your income payment is taxable. The IRS recognizes that part of each payment is simply a return of your own money — money you already paid taxes on.

The exclusion ratio determines the split:

Exclusion Ratio = Investment in the Contract / Expected Return

Let's walk through an example:

• You invest $200,000 in a SPIA at age 70.
• You receive $1,300/month ($15,600/year).
• The IRS life expectancy tables say you're expected to live another 17 years.
• Expected return = $15,600 x 17 = $265,200
• Exclusion ratio = $200,000 / $265,200 = 75.4%

That means 75.4% of each payment ($980) is a tax-free return of premium. Only 24.6% ($320) is taxable as ordinary income.

This partial tax exclusion lasts until you've recovered your entire premium through the tax-free portions. After that point (if you outlive the IRS tables), the entire payment becomes taxable. But in those early years, the tax treatment is remarkably favorable.

When to Buy a SPIA

Timing matters with SPIAs because you're locking in today's interest rates for life. Here are the considerations:

Age matters. Older buyers get higher payouts. But waiting too long means fewer years of income. The math generally favors purchasing somewhere between ages 65 and 80 for most people.

Interest rates matter. Higher rates mean higher payouts. If rates are historically low, you might consider waiting or using a laddering strategy. If rates are high, it's an attractive time to lock in.

The laddering strategy. Instead of converting your entire lump sum into a SPIA at once, buy smaller SPIAs over several years — say, $75,000 at age 65, $75,000 at 68, and $75,000 at 71. This diversifies across interest rate environments and captures higher payouts as you age. It also gives you time to see how your expenses, health, and other income sources evolve.

Health matters. If you're in poor health with a reduced life expectancy, a life-only SPIA is probably a bad deal — the insurance company is betting you'll live longer than you actually will. In this case, consider a period certain option, or look into medically underwritten SPIAs (also called impaired risk or substandard annuities) that offer higher payouts for people with health conditions.

Don't annuitize everything. A common guideline: use SPIAs to cover your essential expenses (housing, food, healthcare, utilities) above what Social Security covers. Keep the rest of your portfolio invested for growth, liquidity, and unexpected expenses. Annuitizing too much leaves you without flexibility.

Who SPIAs Are Best For

SPIAs solve a specific problem: the risk of outliving your money. They're a longevity insurance tool — a paycheck that never stops. Here's who benefits most:

• Retirees aged 65–80 who want guaranteed income to cover essential living expenses.
• People without pensions who want to create their own. Social Security is a form of annuity income — a SPIA adds more.
• Risk-averse retirees who would otherwise keep too much in cash or CDs, earning below-inflation returns because they're afraid of market losses.
• People who tend to overspend from lump sums. A SPIA imposes discipline — you can't blow through the principal because you don't have access to it.
• Healthy individuals with family longevity — if your parents lived into their 90s, a life-only SPIA is a smart bet against your own long life.

SPIAs are probably NOT right for:

• Anyone who needs liquidity or might need the principal back.
• People with serious health issues and shortened life expectancy (unless using an impaired risk product).
• Retirees who already have ample guaranteed income from pensions and Social Security.
• Those who want to leave the maximum inheritance — annuitized money is consumed by the annuitant.

Things to Watch Out For

Inflation is the silent killer of fixed income. A $2,000/month payment feels great today. In 20 years, it buys a lot less. Some SPIAs offer a cost-of-living adjustment (COLA) rider — say, 2–3% annual increases — but your starting payment will be 20–30% lower to compensate. Another approach: keep a growth portfolio alongside your SPIA to serve as an inflation hedge.

Don't annuitize too much. We can't stress this enough. Keep a liquid emergency fund and growth assets alongside your SPIA. Unexpected expenses happen — medical bills, home repairs, helping family. A SPIA can't help with those because you can't withdraw extra.

Shop multiple carriers. SPIA rates vary meaningfully between insurance companies — we've seen differences of 5%–10% in monthly income for the same premium and payout option. Always compare at least 3–5 carriers. This is where working with an independent advisor (like us) matters — we're not tied to one company.

Check the carrier's financial strength. Your income is only as reliable as the insurance company behind it. Stick with carriers rated A or better by AM Best. State guaranty associations provide a backstop (typically covering $250,000 per carrier per state), but you don't want to rely on that.

Consider the opportunity cost. Money placed in a SPIA can't be invested elsewhere. If the stock market returns 10% annually over the next 15 years, the portion of your savings in the SPIA doesn't participate. This is a genuine trade-off — you're choosing certainty over potential.

Don't buy under pressure. A SPIA is a lifetime commitment. Take the time to compare options, consider the percentage of your savings you're annuitizing, and make sure you understand the payment option you've selected. There's no rush. A good advisor won't push you to decide today.

The Bottom Line

Immediate annuities are the purest form of what insurance was designed to do: pool risk and provide certainty. You're pooling your longevity risk with thousands of other annuitants, and in return, you get a guarantee no investment portfolio can match — income for as long as you breathe.

The trade-off is real. You give up control, flexibility, and the possibility of doing better on your own. But for the right person — someone who values sleep-at-night security, who worries about outliving their money, who wants at least a portion of their retirement to feel like a pension — a SPIA can be one of the smartest financial moves you make.

The key is using them as part of a plan, not the whole plan. Cover your essential expenses with guaranteed income (Social Security + SPIA). Keep the rest invested for growth, flexibility, and legacy. That's a retirement income strategy built on solid ground.

If you'd like to see what a SPIA would pay based on your age, gender, and premium amount, we can run personalized quotes from multiple A-rated carriers in minutes. No obligation, no pressure — just the numbers.