Single Premium Immediate Annuity: How It Works and What to Expect

What Is a Single Premium Immediate Annuity?

A single premium immediate annuity — often called a SPIA — is an insurance contract you fund with one lump-sum payment. In exchange, the insurance company begins sending you regular income payments, typically within 30 days. That’s the “immediate” part of the name.

SPIAs are not market accounts. They are insurance contracts issued by licensed carriers. Your payout is determined at the time you sign the contract, based on factors like your age, the amount you deposit, the payment period you choose, and the carrier’s current payout rates.

This article explains how SPIAs work, what drives the income amount, and what questions to ask before you commit — no matter which state you live in.

How a SPIA Works, Step by Step

  1. You make a single deposit. There is no ongoing funding. You hand over a lump sum — often from savings, a rollover, or an inheritance — and the contract is set.
  2. The carrier calculates your payout. Using actuarial tables and current interest rates, the insurer determines how much income you’ll receive per month (or quarter, or year).
  3. Payments begin quickly. Most contracts start income within one to twelve months. The standard is one month after funding.
  4. Payments continue for the term you chose. That might be your lifetime, a joint lifetime with a spouse, or a fixed period such as 10 or 20 years.

What Affects Your Monthly Payout?

Several variables move the income number up or down:

  • Your age at purchase. Older buyers generally receive higher monthly payments because the payout period is statistically shorter.
  • The deposit amount. A larger premium produces a larger check. Most carriers have minimums ranging from $10,000 to $25,000 or more.
  • The payout option you select. A life-only payout pays the most per month but stops at death. Adding a cash refund feature or a joint-life option reduces the monthly amount in exchange for added protection.
  • Current interest rates. Carriers price SPIAs partly on prevailing rates. When rates are higher, payouts tend to be more competitive.
  • The carrier’s own pricing. Two A-rated insurers can quote meaningfully different monthly amounts for the same scenario. That’s why comparing quotes from multiple carriers matters.

SPIA vs. MYGA: Two Different Tools

Shoppers sometimes confuse SPIAs with Multi-Year Guarantee Annuities (MYGAs). They are related but serve different purposes:

  • A SPIA is designed to produce income now. You give up access to the principal in exchange for a predictable income stream you can plan around.
  • A MYGA is a deferred annuity that grows at a fixed rate for a set term — similar in structure to a CD — and is designed to accumulate value before you need income.

If you need income starting this year, a SPIA is typically the more direct path. If you have a 5- to 10-year runway before you need income, a MYGA or deferred income annuity may be worth exploring with a licensed agent.

Payout Options Explained

When you apply for a SPIA, you’ll choose a payout structure. The most common options include:

  • Life only: Payments last as long as you live. Highest monthly amount, but payments stop at death — even if you pass away shortly after funding.
  • Life with period certain: Payments last your lifetime, but if you die before the period (e.g., 10 or 20 years) ends, payments continue to a beneficiary for the remainder of that period.
  • Joint and survivor: Payments continue for as long as either you or your spouse is alive. Monthly amount is lower, but coverage extends to both lives.
  • Period certain only: Payments last for a fixed number of years regardless of whether you’re alive. Useful for covering a specific income gap.
  • Cash refund / installment refund: If you die before receiving back your full premium, the remaining balance goes to your beneficiary.

How Are SPIA Payments Taxed?

Taxation depends on how you funded the contract:

  • Non-qualified funds (after-tax money): Only the earnings portion of each payment is taxable. The rest is considered a return of your original premium and comes back to you tax-free. The IRS calls this the “exclusion ratio.”
  • Qualified funds (IRA, 401(k) rollover): The entire payment is generally taxable as ordinary income, because the original contributions were made pre-tax.

Tax treatment varies by individual situation. Speak with a tax professional before purchasing any annuity contract.

What Protections Exist for Annuity Buyers?

Annuities are insurance products, not bank deposits. They are not insured by the FDIC. Instead, protection comes from two sources:

  • The financial strength of the issuing carrier. Independent rating agencies such as AM Best, Moody’s, and S&P evaluate insurers. Many buyers focus on carriers rated A- or better.
  • State guaranty associations. Most states participate in a guaranty system that provides a backstop — up to specified limits — if a licensed insurer becomes insolvent. Coverage limits vary by state, so check your state’s guaranty association for details.

All annuity guarantees are subject to the financial strength of the issuing insurance company. This is not a guarantee of future results.

How to Compare SPIA Quotes Across Carriers

Because payout rates vary from carrier to carrier, shopping multiple quotes is one of the most practical steps you can take. Here’s what to look for when comparing:

  • Monthly income amount for your chosen payout option
  • Carrier AM Best rating (or equivalent from another agency)
  • Minimum premium requirement
  • Available riders (cost-of-living adjustments, return-of-premium features)
  • State availability — not every product is approved in every state

A licensed annuity agent can pull quotes from multiple carriers simultaneously and walk you through the trade-offs. Because SPIA contracts are generally irrevocable once funded, taking time to compare is worth the effort.

Is a Single Premium Immediate Annuity Right for You?

A SPIA tends to be a strong fit when:

  • You have a lump sum you don’t need to access and want to convert it to reliable monthly income
  • You’re concerned about outliving your savings and want lifetime income coverage
  • You want to simplify your retirement income picture with a predictable, recurring payment

It may be less suitable if you need flexibility to access your principal, if you’re in poor health (though some carriers offer enhanced payouts for certain health conditions), or if you have other income sources that already cover your essential expenses.

Every situation is different. We always recommend speaking with a licensed annuity agent before making a purchase decision. They can help you model different scenarios and find the carrier and payout option that fits your retirement plan.

Annuities are insurance contracts, not bank deposits, and are not insured by the FDIC or any federal government agency. All contract guarantees are subject to the claims-paying ability of the issuing insurer. This content is for educational purposes only and does not constitute personalized financial, tax, or legal advice.