Immediate vs Deferred Income Annuities: When Should Your Income Start?

The Two Ways to Turn Savings Into a Paycheck

There's a moment in retirement planning when the conversation shifts from "how do I grow my money?" to "how do I make my money last?" That's when income annuities enter the picture.

Income annuities do something no other financial product can guarantee: they convert a pile of savings into a monthly paycheck you can't outlive. It's the closest thing to a personal pension that exists today.

But you have two options for how — and when — that paycheck begins. A SPIA turns on the income faucet right away. A DIA schedules it for later. Same concept, different timing. And that timing difference has a dramatic impact on how much you'll receive.

How Each One Works

SPIA: Income Starts Now

A Single Premium Immediate Annuity is beautifully straightforward. You hand the insurance company a lump sum — say, $200,000. Within 30 days, they start sending you a monthly check. That check continues for the rest of your life (or for a period you choose).

The amount of each check depends on your age at purchase, current interest rates, your gender, and the payout option you select. Older buyers get larger payments because the insurance company expects to make fewer payments. Higher interest rates also mean larger payments.

Once the payments start, the amount is locked in. No adjustments for inflation (unless you specifically add a COLA rider), no market fluctuations, no surprises. It's a fixed, guaranteed paycheck.

DIA: Income Starts Later

A Deferred Income Annuity works the same way, but with a waiting period built in. You hand the insurance company a lump sum today, and they start sending you checks at a future date you've pre-selected — maybe 5, 10, or even 20 years from now.

Why would you wait? Because the math rewards patience. During the deferral period, the insurance company invests your money and benefits from mortality credits — a fancy way of saying some policyholders will die before income begins, and their forfeited money subsidizes larger payments for those who survive. It sounds morbid, but it's exactly how pensions and Social Security work too.

The result? Dramatically higher monthly payments compared to a SPIA purchased at the same age.

Side-by-Side Comparison

The Pricing Advantage of Waiting

This is where DIAs really shine. Let's look at a real-world example to illustrate the power of deferral.

Assume: 60-year-old, $200,000 premium, life with 20-year period certain:

• SPIA (income starts at 60): ~$1,050/month
• DIA (income starts at 65): ~$1,450/month
• DIA (income starts at 70): ~$2,050/month
• DIA (income starts at 75): ~$3,000/month

Look at those numbers. By deferring income from 60 to 70, monthly payments nearly double. Defer to 75, and they nearly triple. The insurance company can offer these dramatically higher payments because:

1. Your money grows during the deferral period. The carrier earns investment income on your premium for years before making any payments.
2. Mortality credits accumulate. Some people who purchased DIAs won't survive to the income start date. Their forfeited premiums subsidize larger payments for surviving policyholders.
3. Fewer expected payments. Starting income at 75 instead of 60 means the carrier expects to make 10–15 fewer years of payments.

The Flexibility Trade-Off

Here's the part that makes people nervous about both products: once you buy, you're generally committed. Your lump sum is gone. You can't call the insurance company in three years and ask for it back.

SPIAs are almost always fully irrevocable once payments begin. You chose the paycheck; the lump sum is history. If you selected "life only" and die in year two, the insurance company keeps the remaining balance. (This is why we almost always recommend a period certain or cash refund option.)

DIAs are slightly more flexible during the deferral period. Some newer DIA contracts include a return-of-premium feature — if you change your mind or need the money before income starts, you can get your premium back (though you forfeit any growth). Some also allow you to change the income start date within a window. But once income payments begin, a DIA becomes just as irrevocable as a SPIA.

Who Should Choose a SPIA?

A SPIA makes sense if you:

• Are already retired and need income now — within the next 30 days
• Want to create a pension-like paycheck immediately to cover essential expenses
• Are between 65 and 80 — old enough for attractive payout rates
• Have already decided on your retirement income plan and know exactly how much monthly income you need
• Are comfortable with the irrevocable commitment because you have other liquid assets

Who Should Choose a DIA?

A DIA makes sense if you:

• Are 50–65 and planning ahead for retirement income
• Want to lock in future income at today's rates and today's pricing
• Are specifically worried about longevity risk — outliving your money in your 80s and 90s
• Want the maximum possible monthly payment for each dollar you invest
• Don't need the money during the deferral period and have other resources for the interim

The Longevity Insurance Play

One of the smartest uses of a DIA is as "longevity insurance." Instead of deferring for 5–10 years, some people buy a DIA at 60 with income starting at 80 or 85. The monthly payments at those ages are enormous — because very few people survive to claim them, and the money has decades to grow.

This strategy means you only need your other savings to last until 80 or 85, knowing the DIA kicks in with a massive guaranteed income if you live longer. It's an efficient way to hedge against the risk of a very long life without committing a huge sum.

A related product, the Qualified Longevity Annuity Contract (QLAC), does exactly this inside an IRA. It's worth exploring if this strategy appeals to you.

How to Think About the Decision

Here's our framework. Ask yourself two questions:

1. When do I need the income? If the answer is "now" or "within the next year," a SPIA is your tool. There's no decision to agonize over — you need income, and a SPIA delivers it immediately.

If the answer is "in 5, 10, or 15 years," a DIA is almost certainly the better choice. The pricing advantage of deferral is too significant to ignore.

2. How much of my savings am I comfortable making irrevocable? Income annuities work best as a part of your retirement plan — not the whole thing. A common approach: use an income annuity to cover your essential monthly expenses (housing, food, healthcare, utilities), and keep the rest of your money in flexible accounts for everything else.

If your essential expenses are $4,000/month, Social Security covers $2,500, and you need $1,500 more, that's the amount to target with an annuity. Don't over-annuitize.

The Bottom Line

SPIAs and DIAs are two solutions to the same problem: turning savings into guaranteed income. The SPIA is for right now. The DIA is for later — and it rewards your patience with significantly higher payments.

Neither is "better" in the abstract. The right choice depends entirely on your timeline. If you're reading this in your 50s or early 60s and know you'll need more income in retirement, a DIA purchased today could be one of the smartest financial moves you make. If you're already retired and the clock is ticking, a SPIA starts delivering from day one.

We help people make this exact decision every week. Tell us your age, your timeline, and your income gap, and we'll show you what both options look like with real numbers from top-rated carriers.