The Social Security Bridge Strategy: Delay to 70 by Drawing Down Your Portfolio

The bridge strategy is one of the most powerful moves available to pre-retirees with savings. Instead of claiming Social Security the moment you stop working, you live off your retirement accounts for a few years — bridging the income gap — while your Social Security benefit grows by 8% per year.¹ When you finally claim at 70, your monthly check can be up to 77% higher than if you had claimed at 62 — locked in for life, with annual COLA increases.

For a benefit of $2,500/month at FRA, that's the difference between $1,750/month (at 62) and $3,100/month (at 70) — a $1,350/month gap that compounds with every COLA adjustment for the rest of your life. And unlike your 401(k), Social Security income can't run out.

How the bridge strategy works

Most people assume they should start Social Security as soon as they retire. But if you have a retirement portfolio, you have a choice: spend the portfolio now and save Social Security for later, or spend the Social Security now and preserve the portfolio.

Here's the math that makes the bridge strategy work:

• Every year you delay past FRA, your benefit grows by 8%. This is a guaranteed, risk-free, longevity-adjusted return. No market, no counterparty risk.¹
• From 62 to 70 is a ~77% benefit increase. Delay from 62 to 70 and your monthly check grows from roughly 70% to 124% of your FRA benefit.²
• COLA applies to the higher base. A 2.8% COLA on $3,100/month adds $87/month. The same COLA on $1,750/month adds only $49/month. The gap widens each year.
• Survivor benefits are based on what the deceased was actually receiving. If the higher-earning spouse delays to 70 and dies first, the surviving spouse keeps 100% of that larger benefit — for life.³

Who the bridge strategy is right for

The strategy makes the most sense when several conditions align:

• You have sufficient savings to bridge. A rough rule of thumb: you need approximately 12–15× your annual income gap (expenses minus other income) to bridge safely. A $50,000/year gap for 7 years needs roughly $350,000–$525,000 in accessible savings — before accounting for investment returns during the bridge period.
• You expect to live past the break-even age. The SS-only break-even typically falls between ages 78 and 83. If you have reason to expect longer life — family history, current health, no major illness — the math favors waiting. If your health is poor, claiming earlier may be better.
• You're married and your spouse has lower earnings. The survivor benefit multiplier makes the strategy far more valuable for couples. When the higher earner delays, you're not just maximizing your benefit — you're maximizing the floor your spouse will have if you die first.
• You want to reduce RMD exposure. Drawing down a traditional 401(k) during bridge years lowers the balance subject to required minimum distributions — reducing RMD-triggered income taxes in your 70s and 80s. This pairs naturally with gap-year Roth conversions.

The survivor benefit multiplier — why couples should pay close attention

For married couples, the bridge strategy's value extends well beyond your own lifetime. When you delay to 70, you're not just growing your own check — you're setting the survivor benefit floor.

If the higher earner claims at 62 and receives $1,750/month, and later dies, the surviving spouse steps into that $1,750/month (or their own benefit, if higher). But if the higher earner delays to 70 and receives $3,100/month, the surviving spouse steps into $3,100/month — again, for life, with full COLA compounding.³

For a couple where both spouses live into their 80s, the survivor benefit difference alone can exceed $200,000 in lifetime income.

Risks and what can go wrong

• Sequence of return risk. If markets fall sharply in year 1 or 2 of your bridge, your portfolio may not recover in time to sustain the plan. A 20% market drop on $800,000 immediately reduces your bridge capacity by $160,000 — which may force earlier SS claiming. Consider holding 1–2 years of bridge cash in low-volatility assets (money market, short-term bonds) before investing the rest.
• Healthcare costs before Medicare. If you retire before 65, you need to cover your own health insurance. A $20,000/year COBRA or ACA premium adds to your bridge withdrawal — and may push you into a higher ACA subsidy phaseout range. Factor this in.
• Unexpected liquidity needs. Home repairs, family emergencies, or long-term care costs can disrupt the bridge. Keep a separate emergency fund outside the bridge portfolio — don't assume you can draw from it freely.
• Social Security reform risk. Any legislative changes to SS benefits would affect the strategy. Most credible reform scenarios preserve benefits for those near retirement, and there's no current legislation eliminating benefits. But it's a tail risk worth acknowledging, not ignoring.
• The break-even may be later than you think. If you account for the investment return you could earn on the foregone SS payments during the bridge years, the true break-even can be 2–4 years later than the nominal calculation shown above. For most people in good health, it still makes sense — but your specific numbers matter.

The Roth conversion opportunity during the bridge

The bridge years are often your lowest-income years of retirement. No wages, no Social Security, possibly no RMDs yet. Your tax brackets may be nearly empty — creating an ideal window to convert traditional IRA or 401(k) balances to Roth.

Every dollar you convert to Roth during the bridge reduces your future RMD-taxable balance, reduces provisional income once Social Security starts, and may reduce IRMAA Medicare surcharges. The bridge strategy and gap-year Roth conversions are naturally complementary.

See our Roth conversion gap-year calculator for the full analysis, including IRMAA interaction and 2026 bracket math.

Worked example: Sarah, 64, $600K portfolio, 6-year bridge

Sarah is 64, single, recently retired. Her SSA statement shows: $2,100/month if she claims now; $3,276/month at 70. She has $600,000 in a traditional IRA and $15,000/year in pension income. Her annual expenses: $72,000/year.

Bridge withdrawal needed: $72,000 − $15,000 pension = $57,000/year from her IRA for 6 years.

Portfolio at 70 (assuming 5% annual return):
Start $600,000 → Year 1: $630,000 − $57,000 = $573,000 → Year 2: $601,650 − $57,000 = $544,650 → continuing through year 6 → approximately $380,000 remaining. The bridge is entirely feasible — she'll reach 70 with ~$380K still in her IRA.

SS break-even: Foregone SS from 64–70 = $2,100 × 12 × 6 = $151,200. Annual gain after 70 = ($3,276 − $2,100) × 12 = $14,112/year. Break-even = $151,200 ÷ $14,112 ≈ 10.7 years after claiming at 70 → break-even age ≈ 80.7.

If Sarah lives to 85, she collects $3,276 × 12 × 15 = $589,680 with the bridge strategy vs $2,100 × 12 × 21 = $529,200 claiming now — a $60,480 lifetime gain from the SS side alone, before accounting for any portfolio return impact. Add the lower RMD burden and the SS taxation torpedo reduction, and the bridge strategy wins decisively for a healthy 64-year-old with a reasonable life expectancy.

Sources

1. SSA.gov — Delayed Retirement Credits: for those born in 1943 or later, benefit increases 2/3 of 1% per month (8% per year) for each month delayed past FRA, up to age 70. Credits stop accumulating at 70.
2. SSA — Retirement Benefits (EN-05-10035): benefit at 62 is approximately 70% of FRA benefit (for FRA 67 cohort); benefit at 70 is approximately 124% of FRA benefit. Difference: ~77% from age 62 to 70 in monthly benefit amount.
3. SSA — Survivors Benefits (EN-05-10084): surviving spouse at FRA or older receives 100% of the deceased worker's benefit amount (including any delayed retirement credits if the deceased waited past FRA). Survivor inherits the benefit as the deceased was receiving it at time of death.
4. AARP — Social Security Bridge Strategy: overview of using retirement account withdrawals to fund living expenses while delaying Social Security to maximize lifetime benefits. Covers break-even analysis and portfolio considerations.

Delayed retirement credits per SSA.gov (statutory rate under 42 U.S.C. § 402(w)). Survivor benefit rules per SSA Publication EN-05-10084. Break-even calculations use nominal dollars without inflation or investment return adjustments. Example figures are illustrative. Values verified April 2026.