You've decided annuities will be part of your retirement plan. The next question is: should you commit all at once, or buy gradually over time?
For most people, the case for buying gradually is compelling. Spreading annuity purchases over several years, a strategy known as annuity laddering, reduces the risks of bad timing and keeps more of your options open. Whether it produces higher total income than a single purchase depends on how interest rates and your circumstances evolve, but it tends to be the more flexible and resilient approach for many retirees.
This guide explains how laddering works, why it helps, and how to build one in practice.
What Is an Annuity Ladder?
An annuity ladder means making several smaller annuity purchases at different ages, rather than converting a large sum all at once.
A simple example:
- Age 65: Purchase a $75,000 annuity
- Age 70: Purchase a $100,000 annuity
- Age 75: Purchase a $75,000 annuity
Total committed: $250,000 over 10 years.
The money not yet annuitized can stay invested in the meantime, continuing to grow. Each purchase adds a new layer of guaranteed income.
By the time the final purchase is made, you have three separate income streams running in parallel — each locked in at the rates and payout levels available at the time of purchase.
Why Ladder Rather Than Buy All at Once?
Spreading purchases over time reduces the risk of exposing yourself to a single interest rate environment, missing out on higher payouts that come with buying at an older age, and permanently committing capital you may still need.
The advantages below won't all apply equally to every retiree, but for most people considering annuities, at least some will — and they tend to reinforce each other.
You Avoid Locking Everything Into One Interest Rate Environment
Annuity payout rates are closely tied to prevailing interest rates. When rates are high, insurers can invest your premium in higher-yielding bonds and pass that on as a larger monthly payment. When rates are low, payouts shrink accordingly.
If you commit everything in a single purchase, you're entirely at the mercy of whatever rates happen to be on that day. A ladder spreads that risk across multiple rate environments. If rates rise after your first purchase, your later purchases benefit. If they fall, at least some of your money is already locked in at better terms.
You don't need to predict interest rate movements — you just avoid being fully exposed to any single moment in time.
Older Buyers Receive Higher Payouts
Annuity payments are calculated partly on life expectancy. The older you are at purchase, the fewer years the insurer expects to pay, and the higher your monthly income for the same premium.
At current rates, a 75-year-old typically receives somewhere between 30–50% more per month than a 65-year-old for the same amount invested. Gender is the primary source of variation — women's longer life expectancy reduces the age-based uplift compared to men. By delaying some of your purchases, you naturally capture these higher age-based rates on that portion.
This also means a ladder tends to create a rising income stream over time: your earlier purchases pay a modest amount, and your later purchases add progressively larger amounts on top, which partially offsets the inflation erosion on your earlier, fixed payments.
You Keep Your Options Open
Committing gradually means you can change course if circumstances change. Most immediate annuities are irreversible. Once you hand over the premium, that capital is converted permanently into an income stream and cannot be accessed as a lump sum. Some contracts include period-certain guarantees or cash-refund riders that protect beneficiaries, but in the vast majority of cases, the principal itself is gone.
By committing gradually, you preserve flexibility. If your health changes significantly, if you receive an inheritance, if your spending needs turn out to be lower than expected, or if a better product comes to market, you still have unannuitized savings you can redirect. Over-committing early rules out those options permanently.
When an Annuity Ladder May Not Be the Right Approach
Laddering works well in many situations, but there are cases where a single purchase makes more sense:
You Have an Urgent Income Gap Right Now
If you retire with a significant shortfall between your guaranteed income and your essential expenses, you may need to annuitize a larger amount immediately rather than phasing it in. However, a partial ladder — a larger first purchase, with smaller additions later — can still work in this case.
Your Health Is Already Poor
If you have a reduced life expectancy, later purchases may never be made or may not be cost-effective. Some insurers offer enhanced annuity rates for people with certain health conditions. If this applies to you, locking in a larger amount earlier may be better than waiting.
You Want Simplicity Above All Else
An annuity ladder requires ongoing attention, including monitoring rates, reviewing your plan, and making decisions at each stage. If you prefer a retirement income plan that requires no further decisions after the initial setup, a single purchase is simpler, even if it means accepting more timing risk.
How to Build an Annuity Ladder in Practice
You don't need to create a complex system for your annuity ladder. The following four steps cover everything you need to set one up, from deciding how much to commit in total, to how to manage the money while you wait, to staying adaptable as circumstances change.
Step 1: Decide Your Total Annuity Allocation
Before thinking about timing, settle on roughly how much of your savings you want to annuitize in total. This depends on your essential expenses, other guaranteed income sources, and risk tolerance.
A useful starting point is to calculate your monthly income gap — the difference between your essential expenses and guaranteed income you already have — and work backwards from there.
Step 2: Divide Into Two or Three Purchases
A ladder doesn't need to be complicated. Two or three purchases spaced five years apart are enough to capture most of the benefits.
A simple structure for someone planning to annuitize $250,000 in total:
- First purchase (at retirement, e.g. age 65): 30–40% of total allocation. This provides immediate income to cover the gap between your current guaranteed income and your essential expenses.
- Second purchase (e.g. age 70): 40–50% of total. By now you have clearer visibility on your health and longevity, rates may have shifted, and the age-based payout uplift is meaningful.
- Third purchase (e.g. age 75–80, optional): The remainder, if needed. At this age, payouts are substantially higher and the purchase provides efficient longevity insurance for your later years.
There is no obligation to make the third purchase if your income from the first two is sufficient, or if you decide you'd rather keep the remaining capital invested or accessible.
Step 3: Invest the Waiting Money Appropriately
Money set aside for future annuity purchases shouldn't just sit in cash, but it also shouldn't be invested aggressively, since you have a known use for it within a defined timeframe.
As a general rule of thumb:
- Money earmarked for purchase within 1–3 years: Keep in cash, a high-interest savings account, or short-term bonds. Prioritize capital preservation.
- Money earmarked for purchase in 4–7 years: Hold a conservative mix of shares and short to medium-term bonds, shifting gradually toward bonds and then cash as the purchase date approaches.
- Money earmarked for purchase in 8+ years: Invest more broadly alongside your general portfolio, but begin shifting to a more conservative allocation at least 3–5 years before the intended purchase date to reduce sequence of return risk.
Step 4: Stay Flexible on Timing
The schedule you set at retirement is a plan, not a contract. Review it every year or two and adjust if circumstances warrant:
- If interest rates rise significantly, it may make sense to bring a purchase forward.
- If your health deteriorates, earlier annuitization may become more attractive.
- If your spending turns out lower than expected, you may decide to delay or reduce a planned purchase.
The whole point of the annuity ladder is to preserve optionality. Don't give it up by treating your original schedule as fixed.
A Worked Example
Sarah retires at 65 with a mix of savings and Social Security income. Her Social Security covers most of her essential expenses, leaving a monthly income gap that she wants to close with annuities. She plans to annuitize roughly half her savings in total over the next 10 years, in three purchases.
At 65: She puts around 30% of her planned annuity allocation into a first purchase, which covers most of her income gap immediately. The remaining amount earmarked for future purchases is invested conservatively alongside her broader portfolio.
At 70: She commits another 40% of her total allocation. Because she's now five years older, the same premium buys somewhat more income — about 10–15% more per month than her first purchase delivered. Her total guaranteed income now comfortably covers her essential expenses and then some.
At 75: Her income from the first two purchases is sufficient and her health is good. She uses the remaining 30% of her allocation for a final, smaller purchase — which, at her age, generates the highest income per dollar of the three. Her remaining savings, which she kept outside the ladder entirely, stay invested for discretionary spending and legacy.
By the end, her three purchases together generate substantially more monthly income than a single lump-sum purchase of the same total amount at 65 would have (however, this also depends on how interest rates evolve over the period).
Summary
An annuity ladder won't necessarily produce the highest possible income — that depends on how rates and your circumstances unfold. What it does is reduce the cost of being wrong. Bad timing hurts less, over-commitment is less likely, and you retain the ability to adapt as your health, spending, and priorities change.
For most retirees who are considering annuities, that resilience makes a ladder the stronger default choice, even if a perfectly-timed single purchase might theoretically pay more.
Use our annuity calculator to model how different purchase amounts at different ages would affect your guaranteed income.
Check out our other annuity strategy guides, too. For the broader framework of how annuities fit into your retirement income plan, see how the three-bucket strategy can be adapted to annuities.