How to use annuities to bridge to Social Security at 70
Delaying Social Security to age 70 gets you about 24% more than your full-retirement-age benefit (8% a year from 67 to 70) — if you can afford to wait. Annuities can fill the income gap from your retirement date until age 70.
One of the highest-value uses of an annuity isn't lifelong income — it's a short, defined bridge that lets you delay Social Security to age 70, permanently boosting your largest inflation-adjusted income source. This guide walks through the delay-to-70 math, what a bridge annuity actually costs, a step-by-step worked example, who should use it versus skip it, how it compares to a bond ladder, and the mistakes that quietly wreck the strategy.
Why the bridge is so powerful
Each year you delay Social Security past full retirement age — 67 for anyone born in 1960 or later — increases your benefit by about 8% per year up to age 70, after which no further credits accrue. That increase is permanent, indexed to inflation every year for the rest of your life, and backed by the federal government (SSA).
Spending other money to delay is effectively "buying" the best annuity available — a guaranteed, inflation-protected, government-backed raise that is almost impossible to match with any commercial product. The only catch is that you need income from somewhere during the delay years. A bridge annuity is one of the cleanest ways to fund that gap.
Illustrative single-life payout by starting age — representative levels for A.M. Best A− and above carriers, not a survey or quote. Payout levels as of October 2026. A female buyer's check runs about 4.2% lower at 65 and 7.1% lower at 80, reflecting longer life expectancy. Actual quotes vary by carrier, state, sex and payout option.
How the annuity bridge works
- Buy a period-certain annuity (for example a 5- or 8-year term, not a lifetime contract) that pays a fixed monthly income from your retirement date until you turn 70.
- Live on that defined income while your Social Security benefit keeps growing untouched in the background.
- At 70, the now much larger Social Security check takes over for life and the annuity has done its job and ended.
A period-certain annuity is cheaper than a lifetime one because there is no longevity guarantee baked into the price — you only need it to cover the bridge years precisely. Think of it less as an investment and more as a tool that converts a lump sum into a reliable paycheck for a known number of years.
The delay-to-70 math
The engine behind this strategy is the roughly 8% annual delayed retirement credit. Unlike a market return, it is set by statute: claim later and the benefit formula simply pays more, with the increase compounding into every future cost-of-living adjustment. Over a long retirement, that grows your inflation-protected base, which is the part of your income most exposed to longevity and rising prices.
Below is an illustrative picture of how a sample full-retirement-age benefit changes by claiming age. Your real numbers come from your personal my Social Security statement.
| Claiming age | Approx. monthly benefit | Change vs. age 67 |
|---|---|---|
| 62 (early) | $1,960 | about 30% less |
| 67 (full retirement age) | $2,800 | baseline |
| 70 (maximum) | $3,472 | about 24% more |
The figures above are round, illustrative numbers to show the shape of the trade-off, not a quote for your situation. The key point holds regardless of the exact dollars: every year you wait between full retirement age and 70 buys a permanent, inflation-linked raise.
Worked example: a 65-year-old delaying to 70
Say a 65-year-old retiree's full-retirement-age benefit is $2,800/month. By delaying to 70, that grows to roughly $3,470/month — about a $670/month lifetime increase, before you even count the larger inflation adjustments that ride on top of the bigger base. To fund the gap, she builds a five-year bridge:
- Size the gap. She wants to replace $2,800/month for the 60 months until age 70. That's $2,800 × 60 = $168,000 of total bridge income needed.
- Price the annuity. Because the insurer earns interest on her money while paying it back, a 5-year period-certain SPIA paying $2,800/month might cost a premium of about $152,000 (illustrative, rate-dependent). She effectively gets $168,000 of income for $152,000 up front.
- Live on the bridge. The annuity pays $2,800/month for exactly 60 months. Her portfolio is left alone, and her Social Security benefit keeps climbing.
- Switch at 70. The annuity ends, and roughly $3,470/month from Social Security takes over for life — a $670/month permanent raise relative to claiming at 67.
The headline result: the $152,000 doesn't buy the raise by itself — it pays her bills while she waits, and even if she claimed at 67 she would still need to cover ages 65 to 67 from savings. The real price of the raise is the 36 Social Security checks she skips between 67 and 70: 36 × $2,800 = $100,800. In return she gets about $670/month more for life, plus richer inflation indexing on the larger Social Security base. Ignoring cost-of-living adjustments, the extra $670/month earns back those skipped checks in about 150 months ($100,800 ÷ $670), or roughly 12½ years — around age 82½. If she lives 20 years past 70, that $670/month difference alone is on the order of $160,000 before any cost-of-living adjustments — and Social Security keeps paying as long as she lives.
Why this can beat spending from the portfolio
The alternative to a bridge annuity is drawing about $33,600/year from your investments for five years — and those are often the highest-risk years for sequence-of-returns damage, the stretch right after you stop working. Locking that five-year burn into a period-certain SPIA removes market risk from the bridge entirely, while the rest of the portfolio stays invested and gets five more years to compound.
In other words, you are trading a small interest spread paid to the insurer for certainty: a bad market in your first retirement years can't force you to claim Social Security early to make ends meet. That protection is the whole point — the annuity isn't trying to beat the market, it's trying to make sure the market can't beat your plan.
Bridge annuity vs. a bond or CD ladder
You don't strictly need an insurance product to bridge to 70. A ladder of CDs or short Treasuries maturing each year you need cash delivers similar certainty while keeping the money in your own name. Here's how the two stack up.
| Feature | Period-certain annuity | CD / bond ladder |
|---|---|---|
| Income certainty | Contractual, fixed monthly check | High, depends on maturities you set |
| Liquidity | Very low — an immediate annuity generally can't be surrendered once issued | High — sell or let rungs mature |
| Ongoing effort | Set once, hands-off | You reinvest and manage maturities |
| Money stays in your name | No — paid to the insurer | Yes |
| Credit risk | Insurer's claims-paying ability — not FDIC-insured; state guaranty coverage is limited | FDIC/Treasury backed within limits |
Both work. The ladder usually costs less and stays liquid; the annuity buys simplicity and a single, guaranteed contract you can't accidentally spend early. Before signing any annuity, check the issuing insurer's strength and your state's guaranty-association coverage limits through your state insurance department and the NAIC, and verify the selling agent's insurance license through your state insurance department (plus FINRA BrokerCheck if they also sell securities).
Who it's right for — and who should skip it
- Good fit: you can afford to delay, expect average-or-better longevity, want a guaranteed bridge instead of selling investments in a possible downturn, and prefer one hands-off contract over managing a ladder.
- Strong fit: a higher-earning spouse, since delaying the larger benefit also raises the survivor benefit the surviving spouse keeps for life.
- Poor fit: serious health problems or a short life expectancy, where delaying Social Security may never pay off and liquidity matters more.
- Poor fit: you can already bridge cheaply with cash and short bonds, or your assets are too small to give up the liquidity an annuity ties up.
Mistakes to avoid
- Buying a lifetime annuity for a 5-year job. You'll overpay for a longevity guarantee the bridge doesn't need. Insist on a period-certain term that matches the gap to 70.
- Ignoring taxes. Bridge income, IRA withdrawals, and Roth conversions before 70 all affect your taxable income — which can raise Medicare premiums and the share of benefits that's taxed. Coordinate with a tax pro and review how benefits are taxed via the IRS.
- Skipping quotes. Annuity pricing moves with interest rates and varies by insurer. Get several quotes for the same term and payout before you sign.
- Overlooking the survivor benefit. For couples, delaying the higher earner's benefit is often the single biggest reason to bridge — don't decide on your own benefit in isolation.
How to do it: next steps
- Pull your real numbers from your my Social Security account and confirm your benefit at full retirement age and at 70.
- Decide the bridge length (your retirement age to 70) and the monthly income you need to cover.
- Compare two routes — a period-certain SPIA and a CD/Treasury ladder — and price both.
- Vet any insurer through the NAIC, check the agent's license with your state insurance department (and FINRA BrokerCheck if they also sell securities), and confirm exact premium, payout, fees, and surrender terms in writing.
- Loop in a fee-only advisor or tax pro to coordinate withdrawals, conversions, and the claiming date.
