There’s a window in your 60s when your tax rate may never be lower again. Wages have stopped. Social Security hasn’t started. RMDs are years away. Every dollar you convert from traditional to Roth in this window can save you from paying a higher rate later — permanently. Here’s how to use it.
A Roth conversion moves money from a traditional IRA or 401(k) into a Roth IRA. You pay income tax on the converted amount now; after that, it grows tax-free and comes out tax-free, with no lifetime RMDs for the owner. The strategy is simple: convert in years when your marginal rate is lower than the rate you’d pay later.
Why Ages 60–62 Are the Sweet Spot
For many people, 60–62 is the lowest-income stretch of their adult life: the paycheck stopped, Social Security hasn’t been claimed, and required minimum distributions (which begin at 73 — or 75 if you were born in 1960 or later) are a decade away. Each conversion year is a use-it-or-lose-it opportunity; the window closes the moment RMDs and Social Security stack your income back up.
The 2026 Brackets to Fill
The classic move is “filling the bracket”: convert just enough to use up your current bracket without spilling into the next one.
| 2026 MFJ bracket | Taxable income range | How to use it |
|---|---|---|
| 12% | Up to $100,800 | Convert aggressively — this rate is a gift |
| 22% | $100,801–$211,400 | The main conversion zone for most pre-retirees |
| 24% | $211,401–$403,550 | Worth filling if RMDs would push you to 32%+ later |
Remember the 2026 MFJ standard deduction is $32,200 — income below that is effectively taxed at 0%. A married couple with no other income can convert roughly $132,000 and stay inside the 12% bracket.
Five Rules for the Conversion Window
1. Pay the tax from outside the IRA. Paying conversion tax with IRA funds shrinks the amount that reaches the Roth and can trigger penalties if you’re under 59½. Use taxable savings.
2. Watch the IRMAA cliffs. A big conversion year raises your MAGI — and two years later, your Medicare premiums. Keep an eye on the $218,000 joint / $109,000 single IRMAA thresholds (see our 2026 IRMAA brackets guide).
3. Coordinate with Social Security timing. Converting before you claim keeps your provisional income down and can reduce how much of your benefit gets taxed. Our Social Security claiming guide walks through the interaction.
4. Don’t convert everything. Keep some traditional balance for years when deductions are high (big medical expenses, charitable giving) — withdrawals then may be taxed at 0–12% anyway.
5. Mind the five-year rules. Each conversion has its own 5-year clock for penalty-free access to the converted principal if you’re under 59½. At 60+, this rarely binds — but know it exists.
A Worked Example
A 61-year-old couple, retired, living off taxable savings. Their only income is $20,000 in dividends. After the $32,200 standard deduction, they have enormous headroom: they could convert roughly $190,000 and keep every dollar inside the 22% bracket or below. That $190,000 will never be taxed again — no RMDs at 73, no tax for heirs (under the 10-year rule, heirs still must empty it, but tax-free).
Compare that to doing nothing: at 73, RMDs on a $2M traditional IRA approach $75,000+ a year, stacked on Social Security, potentially pushing the couple into the 24–32% brackets — plus IRMAA surcharges. The conversion window is how you defuse that.
The Bottom Line
Ages 60–62 are a once-in-a-lifetime tax sale. Map your brackets each December, fill the 12% and 22% buckets deliberately, watch the IRMAA cliffs, and pay the tax from cash. Done right, a few years of disciplined conversions can cut your lifetime tax bill by six figures.
Related reading: Roth IRA vs Traditional IRA 2026 · Backdoor Roth IRA Guide · IRMAA Brackets 2026
Sources
- 2026 tax brackets and standard deduction, via Mercer Advisors — Roth Conversion Strategy for Low-Income Years (PDF)
- InventaWealth — Roth conversion strategy for the 55–70 window
- Motley Fool — The Roth conversion window most pre-retirees miss
Not financial advice. Do your own research. Roth conversions are irreversible and create current-year tax — consider a qualified advisor for your situation.