He Spent His 60s Quietly Moving His IRA Into a Roth. At 73, When the IRS Showed Up to Dictate His Withdrawals, There Was Nothing Left to Tax

If you have a traditional IRA and you’re somewhere between the day you stopped working and the day the IRS starts dictating your withdrawals, you’re sitting on the single best tax window of your life. It’s called a Roth conversion, and executed during the gap years between retirement and required minimum distributions, it can quietly empty out the account the IRS was planning to tax on its own schedule. Do it right and by 73, there’s nothing left for the government to force out.

The Buried Rule Hiding in Your IRA

A Roth IRA has no required minimum distributions for the original owner. Full stop. Every dollar you shift from a traditional IRA into a Roth in your 60s is a dollar that will never appear on an RMD schedule, never stack on top of Social Security income, and never get pulled at the worst possible tax rate. You pay ordinary income tax on the converted amount in the year you convert, and from that point the account grows tax-free for the rest of your life. The whole strategy rests on deliberately filling up the lower tax brackets before RMDs and Social Security push your income into higher territory.

Where the Rule Actually Lives

Roth IRAs are governed by Internal Revenue Code §408A, and the RMD rules are in §401(a)(9). The SECURE 2.0 Act pushed the RMD start age to 73 for anyone born between 1951 and 1959, and all the way to 75 for anyone born in 1960 or later. Those two changes are what create the modern conversion window. The current brackets and deduction amounts come from Revenue Procedure 2025-32, the IRS’s official tax year 2026 inflation adjustments.

Older retirees doing their planning should also know about the One Big Beautiful Bill Act (OBBBA), signed into law on July 4, 2025. It created a new $6,000 deduction for taxpayers age 65 and older, available for tax years 2025 through 2028. The deduction stacks on top of the regular $32,200 standard deduction and the existing extra senior standard deduction, and a married couple where both spouses are 65 or older can claim $12,000 combined. The deduction phases out at a 6% rate for income above $75,000 for single filers and $150,000 for joint filers. Within those thresholds, the additional shelter can meaningfully widen the low-bracket space available for conversions each year.

Who Actually Wins Here

This strategy works well for retirees who stopped working before their RMD age, carry meaningful traditional IRA or 401(k) balances, expect future RMDs to push them into a higher bracket, and can pay the conversion tax out of a taxable brokerage account rather than from the IRA itself. The math gets harder when you’re already in the top bracket and expect to drop later, when you’d need to tap converted funds within five years, when the only way to cover the tax bill is to liquidate IRA assets, or when you’re a high-income Medicare beneficiary already sitting at the top IRMAA tier.

How to Run the Play in 2026

1. Estimate your taxable income for the year before any conversion. For a married couple filing jointly, the standard deduction is $32,200, so income below that is effectively untaxed.
2. Identify the top of the bracket you’re willing to fill. The 12% bracket runs to $100,800 for joint filers ($50,400 single), and the 22% bracket runs to $211,400 joint ($105,700 single). Many retirees convert up to the top of 12% or 24%.
3. Convert the exact dollar amount that fills that bracket. Not more.
4. Pay the tax from outside funds. Using IRA dollars to cover the bill shrinks the account you’re trying to move.
5. Repeat every year until you hit your RMD age, or until the balance is where you want it.

The Catch Nobody Warns You About

Three traps deserve attention before you act. First, every conversion starts its own five-year clock before earnings can come out tax-free, tracked separately from any earlier Roth contribution or prior conversion. Second, a conversion inflates your modified adjusted gross income, and Medicare uses a two-year lookback for IRMAA purposes. A large 2026 conversion sets your 2028 Part B and Part D surcharges. The 2026 standard Part B premium is $202.90 per month. IRMAA surcharges begin biting joint filers above $218,000 in MAGI and reach the top tier at $750,000, adding as much as $487.00 per month to Part B alone. Third, conversion income raises the taxable portion of your Social Security benefit and can push provisional income past the 85% threshold, so if you’re already collecting, model that interaction carefully before you convert.

The window closes at your RMD age. The Social Security Administration announced the official 2027 COLA at 3.6% on October 14, 2026, the largest adjustment since 2023. The 2026 COLA was 2.8%, so benefit checks are now climbing faster than they have in several years, and RMDs climb alongside them. Every gap year you don’t use is a year the IRS gets to write the withdrawal schedule instead of you.

Editor’s note: This article updates the 2027 Social Security COLA from the prior estimated range of 3.5% to 3.6% to the official announced figure of 3.6%, confirmed by the Social Security Administration on October 14, 2026. It also clarifies that the OBBBA’s $6,000 senior deduction is a standalone deduction that stacks with both the standard deduction and the existing extra senior standard deduction, and adds the income phase-out thresholds ($75,000 single, $150,000 joint) that the prior version omitted.

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