Income annuities (SPIA and DIA), explained

An income annuity does one thing extremely well: it converts a pile of savings into a paycheck that arrives on schedule for the rest of your life. It is the closest thing on the market to buying yourself a pension.

An income annuity is the bridge from a lifetime of saving to a lifetime of income. You carry the lump sum onto one bank, and a steady paycheck walks off the other, rain or shine, for as long as you live.

Introduction

Most retirement products are about growing a pile of money. An income annuity is about the harder problem that comes after: turning the pile into a paycheck you cannot outlive. If you have ever envied a neighbor with an old-fashioned pension, the check that just shows up every month regardless of what the market did, this is the product built to recreate that feeling. You hand an insurance company a lump sum, and the company signs a contract to pay you a set amount, on a schedule, for the rest of your life if you choose.

That trade is simple to describe and genuinely serious to make, because in its purest form it is permanent. The lump sum stops being a pile you can dip into and becomes a stream you can only drink from. Done for the right money and the right reasons, that swap solves the deepest fear in retirement, which is running out. Done casually, it can leave you illiquid at exactly the wrong moment. This guide walks the whole bridge: what an income annuity is, the difference between the immediate and deferred versions, what actually sets the size of your check, and the honest costs of the guarantee.

What Is an Income Annuity?

An income annuity is a contract with an insurance company. In exchange for a single premium, the insurer promises a series of payments: monthly is most common, and the schedule can run for a set number of years, for your lifetime, or for the lifetimes of you and a spouse. Unlike the savings-style annuities such as a MYGA or a fixed annuity, there is no account balance you watch grow. The product is the paycheck itself.

Because the promise stretches across decades, who stands behind it matters enormously. An income annuity is not FDIC insured and it is not a bank product. The guarantee is backed by the issuing insurer's claims-paying ability, which is why we show the carrier's financial-strength rating on everything we list and why picking a strong insurer matters more here than with any other annuity type. Three terms carry most of the vocabulary you will meet.

SPIA vs DIA: What's the Difference?

A SPIA (single premium immediate annuity) starts paying within about a year of purchase; a DIA (deferred income annuity) starts paying years down the road. The SPIA is for someone standing at the edge of retirement who needs the paycheck to begin now, usually within a month or two. The DIA is bought today with a start date you choose later. Because the insurer holds the money longer, and because some buyers will not live to collect, every year of deferral buys a meaningfully larger payment.

One cousin worth knowing about: a DIA bought inside an IRA or 401(k) under special IRS rules is called a QLAC, and it carries an extra tax perk around required minimum distributions. It is different enough that we gave it its own page. See our QLAC guide if your money is in a retirement account and the income you want is for your late 70s or 80s.

What Determines Your Income Annuity Payment?

When you ask an insurer to quote an income annuity, four inputs do almost all of the work. None of them are mysterious, and knowing them ahead of time makes every quote easier to read.

• How much you put in. Payments scale with the premium. Twice the deposit buys roughly twice the check, so the real question is how much of your savings should become income at all.
• Your age when payments begin. Older start ages mean fewer expected payment years, so each check is larger. This is why deferring a DIA is so powerful and why quotes differ so much between a 60 year old and a 70 year old.
• One life or two. A single-life contract pays the most per month. A joint-life contract covering a spouse pays less, but it keeps paying as long as either of you is alive.
• The payout option you choose. Guarantees for your heirs, refund features, and inflation adjustments all trim the starting check. The next section walks through the menu.

Interest rates at the time you buy matter too, since the insurer invests your premium in the background, which is one reason quotes drift over time and why we date-stamp the examples on our income payout page. Where you are on your own retirement timeline shapes which version of this product even makes sense, so start there.

What Payout Options Does an Income Annuity Offer?

Most income annuities offer four payout options: life only, joint and survivor, period certain, and cash refund. The option decides what happens to the money if you die earlier than the actuarial tables expect, and it is where most buyers feel the sharpest trade-off. The purest option, a single life-only annuity, pays the largest check precisely because it can stop after one payment or after five hundred. Everything else on the menu is a way of softening that edge, and each softening costs a slice of monthly income.

Some contracts also offer inflation adjustments that step the check up each year, either by a fixed percentage or tied to an index, in exchange for a noticeably smaller starting payment. Riders like these vary widely by carrier, and our annuity riders guide explains how to judge whether one earns its cost.

What Are the Benefits of an Income Annuity?

The core benefit is the one nothing else on the market fully replicates: income that cannot run out while you are alive, no matter how long that turns out to be. Half of retirement planning is guessing your own lifespan, and an income annuity simply removes the question. Retirees often use one to build a floor under their essential expenses, the mortgage, groceries, insurance, so that no market decline can ever threaten the basics. With the floor in place, the rest of the portfolio can stay invested for growth with far less anxiety attached.

There is also the simplicity. After the purchase there is nothing to manage, rebalance, or second-guess. For anyone worried about handling investments in their 80s, or about a surviving spouse inheriting a complicated portfolio, a check that just arrives is worth something real. And because of mortality credits, the check is bigger than what a comparable pile of bonds or CDs could safely pay you on its own.

What Are the Disadvantages of an Income Annuity?

The main disadvantages are losing access to the lump sum, inflation eroding fixed checks, and a poor deal if you die early. The guarantee is paid for with flexibility, and anyone selling you one without dwelling on that is not doing their job. Here is the full bill.

• The lump sum is gone. Annuitizing is usually irreversible. If a roof, a medical bill, or a better idea arrives later, this money cannot come back to help. Never annuitize dollars you might need as dollars.
• Inflation eats fixed checks. A payment that covers the groceries at 65 may feel thin at 85. Inflation-adjusted options exist but start noticeably lower, and many buyers underestimate this trade.
• Dying early can mean a poor deal. With a life-only contract, an early death ends payments with nothing for heirs. Refund and period-certain options soften this, at the price of a smaller check.
• The guarantee is only as good as the insurer. These promises can run 30 years or more, and they are not FDIC insured. Carrier strength ratings are not fine print here; they are the product.
• Taxes still apply. Payments from pre-tax retirement money are taxed as ordinary income, and nonqualified contracts have part of each check taxed. Our annuity taxation guide covers both cases.

What Should You Consider Before Buying an Income Annuity?

Before buying an income annuity, weigh four things: how much to annuitize, when payments should start, single or joint coverage, and the carrier behind the promise. These are the levers a good advisor will walk you through, and the ones worth thinking about before anyone quotes you a number.

Moving forward with an income annuity

An income annuity is not a portfolio; it is a bridge, and a bridge only needs to carry the traffic you send across it. The healthiest way to use one is to convert just enough savings into guaranteed income that your essentials are covered for life, then let the rest of your money stay flexible and invested. If that balance sounds right, your next steps are concrete: see what a lump sum pays today on our income payout page, try your own figures in the annuity payout calculator, and read when not to buy an annuity, because this product has a wrong audience and you deserve to know if you are in it.

And if you want a person to walk the bridge with you, we will match you with a Certified Annuity Advisor who prices the options plainly and tells you when a smaller contract, or none at all, serves you better. We publish exactly how we get paid, so the advice and the incentives are in the open.

Pros and cons at a glance

Every product has trade-offs. Here is the honest ledger for this one, side by side.

Questions to ask before you buy

Bring these to any advisor. A good one will welcome them.

• How much of my essential spending needs a guaranteed floor?
• Should payments start now (SPIA) or later (DIA)?
• Single life, or joint with my spouse?
• Do I want a refund or period-certain option for my heirs, at the cost of a smaller check?
• Is the carrier strong enough to keep a 30 year promise?

Frequently asked questions