Roth Conversions After 60:
Is It Too Late? (Usually, No)

Of all the tax planning strategies available to retirees, Roth conversions after age 60 may be the most misunderstood — and the most overlooked. Many people assume the window for Roth contributions has closed once they retire. The window for conversions, however, remains open indefinitely and is often more valuable in retirement than it ever was during working years.

What Is a Roth Conversion?

A Roth conversion is the process of moving money from a Traditional IRA (or 401(k)) — where contributions were made pre-tax and growth is tax-deferred — into a Roth IRA, where future growth and withdrawals are completely tax-free.

The catch: the amount converted is added to your taxable income in the year of conversion. You pay income tax on it now, in exchange for never paying tax on that money or its future growth again.

Why After 60 Is Often the Best Time to Convert

Counterintuitively, the years immediately after retirement are often the ideal window for Roth conversions. Here is why:

• Your income is at its lowest. No more salary. Social Security perhaps not yet claimed. IRA withdrawals not yet required. This temporary low-income period means conversions are taxed at your lowest possible rate.
• RMDs have not started. Before age 73, you control how much you withdraw from your Traditional IRA. After 73, the government dictates minimum withdrawals — and forces you to take them at whatever tax rate applies then.
• Time for tax-free growth. Even converting at 65 gives the Roth assets 20+ years of potential tax-free growth before required distributions kick in (Roth IRAs have no RMDs during your lifetime).

The Conversion Sweet Spot — Filling Up a Tax Bracket

The most effective Roth conversion strategy is to convert enough each year to fill up your current tax bracket without spilling into the next one. For a married couple filing jointly in 2026, the 12% bracket extends to approximately $94,300 in taxable income. The 22% bracket runs to approximately $201,050.

A retiree in the 12% bracket could convert up to the top of that bracket — paying only 12% on converted amounts — rather than waiting for RMDs to force larger withdrawals potentially taxed at 22% or higher.

The IRMAA Trap to Avoid

Large Roth conversions can trigger Medicare IRMAA surcharges two years later if they push your income above the relevant thresholds. For 2026, the base Medicare Part B premium is $185.00/month. At higher income levels, surcharges can add $500-$600 per month. This must be factored into conversion planning — converting just enough to stay below IRMAA thresholds is critical for many retirees.

Is It Too Late to Convert After 70?

Not at all. Even retirees in their 70s can benefit from conversions, particularly to reduce future RMD amounts, to create tax-free assets for a surviving spouse, or to leave a more tax-efficient legacy to heirs. The calculation simply shifts — shorter time horizon means the tax-free growth benefit is smaller, so the break-even analysis must be run carefully.

The ideal answer depends entirely on your specific income, bracket, expected RMD amounts, state tax situation, and estate goals. A CPA or financial planner specialising in retirement tax planning can model the exact numbers for your situation — it is one of the highest-return professional services a retiree can invest in.