A Social Security bridge strategy is a simple idea: instead of claiming Social Security the day you retire, you use IRA or 401(k) money to write yourself a paycheck for a few years, and let your Social Security keep growing 8% per year up to age 70.
It's the single highest-leverage move most retirees never make. Not because it's complicated, because their advisor never brought it up.
The Numbers That Make the Bridge Work
Delayed retirement credits add roughly 8% per year from FRA to 70. Compared to claiming at 65, delaying to 70 gets you a check that's about 43% larger, guaranteed for life, inflation-adjusted. Compared to 62, the age-70 check is about 77% larger.
For a couple, delaying the higher earner protects the survivor benefit, the larger of the two checks continues for the surviving spouse's life.
The Bridge, Concretely
Say you retire at 65 with a $3,000/mo FRA benefit and $600K in an IRA. Instead of claiming, you build a 5-year bridge that pays you ~$3,000/mo from the IRA. At 70, your Social Security turns on at roughly $3,720/mo (24% delayed credit on FRA of $3,000). The bridge ends the same month.
Your monthly cash flow stayed identical. Your Social Security check is now ~$720/mo bigger for the rest of your life, and your spouse's life, if they outlive you.
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Two Ways to Fund the Bridge
Period-certain SPIA (behavioral tool). A 5-year period-certain SPIA from an A-rated carrier like Athene, Corebridge, Pacific Life, Nationwide, or Brighthouse. Hand them the lump sum; they send monthly checks for exactly 5 years, then stop. It's raid-proof. If your risk is that you'll panic-sell in a downturn or dip in for a new roof, the SPIA locks the income in.
Treasury or CD ladder (yield tool). Five Treasury notes or brokered CDs, one maturing per year, interest auto-paid to checking. At current rates this is typically slightly cheaper than the SPIA and remains fully liquid. Requires you to leave it alone.
This is the honest part: the ladder usually wins on pure yield. The SPIA earns its place through the behavioral lock, not a rate edge. Anyone selling you a SPIA bridge as a "tax trick" or a "yield opportunity" is stretching.
The RMD Side Effect Is Real
The bridge shrinks your IRA in your 60s. That shrinks the balance that hits your Required Minimum Distributions at 73. Smaller RMDs = smaller forced income = less Social Security taxation, less IRMAA exposure, more control.
This works whether you fund the bridge with a SPIA or a ladder. The wrapper doesn't matter for RMD purposes; the withdrawal timing does.
Layer On Roth Conversions
The best window in a retiree's life for Roth conversions is the gap between retirement and Social Security. Low bracket, no earned income, no RMDs, and now your IRA is smaller thanks to the bridge withdrawals.
If you have outside taxable cash to pay the conversion tax, fill the 12% or 22% bracket every year of the bridge. Do the arithmetic on paper before you assume this dominates, but for many retirees, this stacked strategy is worth six figures over 20 years.
Who Should Skip the Bridge
Anyone with a health problem and a short prognosis. Anyone whose IRA is small enough that the bridge would deplete the majority of it. Lower earners in a couple, their delayed credit is small in dollar terms and evaporates at first death anyway.
The bridge is a breadwinner strategy. Match the tool to the situation.
How the Handoff Should Look on Paper
The mechanical goal of a bridge is a seamless handoff. Same monthly dollar amount, same deposit day, same account. When Social Security starts, the household paycheck doesn't blink.
In practice: the SPIA (or Treasury/CD ladder) is set up to pay approximately the projected age-70 Social Security benefit each month, into the same checking account Social Security will later deposit into. When Social Security turns on the month after your 70th birthday, the bridge's last payment has already arrived. There is no gap month.
This engineering is where the behavioral value lives. Retirees who can visualize the handoff before they retire are dramatically more likely to actually delay Social Security than retirees who can't.
Three Ways to Pay Yourself Until 70, Compared
People search for this as a "Social Security alternative," a "stop gap" or "income while delaying Social Security." It is the same job: a Social-Security-shaped paycheck from your own savings that ends the month the real check starts. Nothing replaces Social Security's inflation-adjusted, government-backed lifetime income. You delay it, and you cover the gap.
| Tool | Strengths | Weak spots |
|---|---|---|
| Planned IRA withdrawals | No product, no contract, full flexibility | If the money stays in stocks, a bad first year forces selling low (sequence risk). Drifts without discipline. |
| Period-certain SPIA | Contractually raid-proof, no market exposure, no decisions. Payments are guaranteed, backed by the claims-paying ability of the issuing insurer, with a state guaranty association behind it. | Illiquid once bought. Usually a slightly lower yield than a comparable ladder. |
| Treasury or CD ladder | Often slightly cheaper, fully liquid, backed by the U.S. Treasury or FDIC limits | Needs you to leave it alone. Selling a rung early can mean a small loss. |
My default for a disciplined retiree with a solid bond or cash bucket is the ladder. When the real risk is the retiree (the new car, the panic sale), the SPIA earns its place. Planned withdrawals from a stock-heavy portfolio are the weakest of the three unless reserves are large.
What the Bridge Costs Up Front
A bridge costs roughly the present value of the payments it replaces. For a 65-year-old bridging five years to a $3,600 monthly target (60 payments):
| Assumed yield | Lump sum needed | Months of payments |
|---|---|---|
| 3% | about $200,300 | about 55.6 |
| 4% | about $195,500 | about 54.3 |
| 5% | about $190,800 | about 53.0 |
These are discounting math at assumed yields, not quotes. Get a same-day SPIA quote and a ladder price for the same term before you commit, and compare them side by side. A planned-withdrawal plan with no growth needs the full $216,000.
Sizing the Bridge and Keeping Reserves
Never commit more to the bridge than you can afford to have locked up (SPIA) or bond-bound (ladder). After funding it you should still have 6 to 12 months of emergency cash and enough in other accounts to ride out a bad market year without filing early. If you cannot hit that reserve, shorten the bridge (65 to 67 still beats claiming at 65) or claim earlier.
Setting It Up So the Handoff Is Invisible
- Fund it from the pre-tax IRA, not the Roth. Spend pre-tax dollars in low-bracket years and let the Roth keep compounding tax-free.
- Same account, same day. Have the SPIA or ladder pay into the checking account Social Security will later deposit into, on about the same date each month.
- Give it a name. Some people label it "Social Security prepayment," because that is what it is.
- Over 59 and a half: traditional IRA withdrawals are ordinary income with no 10% early-withdrawal penalty.
What a Bridge Is Not
It is not a tax trick. IRA-funded SPIA payments and IRA withdrawals are ordinary income. It is not a "tax-free Social Security replacement," and anyone who calls it that is wrong on both counts. A variable annuity is a poor bridge, because it keeps the market risk you are trying to remove. A life-only SPIA is the wrong tool too: a period-certain SPIA pays any remaining scheduled payments to your beneficiary if you die during the term.
Checked October 3, 2026. Figures are illustrations; your Social Security statement and same-day quotes are the numbers to plan with.
Frequently Asked Questions
How much does a 5-year Social Security bridge cost?
Roughly the present value of 5 years of Social Security payments. At assumed yields of 3% to 5%, expect to commit roughly 53 to 56 months of your monthly target as a lump sum. The calculator on this site models it for your specific ages and PIA.
Is the SPIA bridge better than a Treasury ladder?
For pure math, usually not. The Treasury ladder tends to be slightly cheaper and stays liquid. The SPIA wins when you need the behavioral lock, a contract that keeps you from raiding the account.
Does the bridge withdrawal trigger the 10% early-withdrawal penalty?
If you're 59.5 or older, no. Traditional IRA withdrawals after 59.5 are ordinary income only. Bridge withdrawals are typically deployed between 59.5 and 70.
What if I die during the bridge?
For a period-certain SPIA, remaining payments pass to your named beneficiary. For a Treasury ladder, the whole ladder passes to your estate at full market value. Either way, no money is lost to the insurer.
Can I combine a bridge with Roth conversions?
Yes, this is the sophisticated version. Bridge with pre-tax IRA dollars while running Roth conversions on top to fill your low bracket. Requires outside cash to pay the conversion tax.
What's the cheapest way to bridge income to age 70?
Usually a Treasury or CD ladder, which tends to cost slightly less than a comparable period-certain SPIA and stays liquid. The SPIA earns its cost when its raid-proof structure is what you need.
Can I use a variable annuity to bridge to Social Security?
Not well. A variable annuity keeps market risk during the bridge, which is the risk you are trying to remove. A fixed period-certain SPIA or a Treasury or CD ladder fits the job.
What if the market crashes during the bridge?
A SPIA's payments do not depend on the market. A ladder held to maturity pays back par. Both hold up better than an all-stock withdrawal plan.
Should I fund the bridge from my Roth or traditional IRA?
Almost always the traditional IRA. Spend pre-tax dollars in low-bracket years and leave the Roth to compound tax-free for later.
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