Roth conversions do not reduce your required minimum distribution

A Roth conversion — moving money from a traditional IRA or 401(k) into a Roth account — does not count toward your required minimum distribution (RMD). The IRS treats the conversion as a separate transaction. You must still withdraw your full RMD from your traditional retirement accounts, even if you converted a large sum to Roth that same year.

This matters because many people convert money to Roth specifically to reduce their traditional account balances and lower future RMDs. But the year you convert, the RMD is calculated on your account balance as of December 31 of the previous year — before the conversion happens. The conversion itself does not change that calculation.

The conversion amount does become taxable income in the year you convert it, which can push you into a higher tax bracket. That tax bill is separate from whether the conversion counts toward your RMD.

Key Takeaways

  • Your RMD is based on your December 31 balance from the prior year, so a conversion that happens in January through December does not reduce the amount you must withdraw that year.
  • You must take your full RMD from traditional IRAs and 401(k)s regardless of how much you converted to Roth.
  • The conversion amount is added to your taxable income for that year, which may increase your tax liability even though it does not satisfy your RMD.
  • If you convert after taking your RMD, you have already met the requirement; if you convert before, you still owe the full RMD withdrawal.

How the RMD calculation works when you convert

The IRS calculates your RMD using your account balance on December 31 of the year before you must take the distribution. If you have $500,000 in a traditional IRA on December 31, 2023, your 2024 RMD is based on that $500,000 figure — even if you convert $200,000 to Roth in March 2024.

You still owe the full RMD on the remaining $300,000 (plus any earnings). The $200,000 you moved to Roth is no longer in the traditional account, but it does not reduce the RMD you calculated at the start of the year.

This is why some people convert money early in the year and then take their RMD later: the conversion does not satisfy the RMD, so they must withdraw the full amount anyway. The conversion is simply an additional transaction that increases their total taxable income for that year.

The tax impact of converting and taking an RMD in the same year

When you convert to Roth and take your RMD in the same calendar year, both amounts count as taxable income. If you convert $200,000 and your RMD is $50,000, you report $250,000 in taxable income that year — assuming no other income sources.

This can trigger several consequences: you may move into a higher tax bracket, become subject to Medicare premium surcharges (IRMAA), or lose deductions that phase out at higher income levels. Some people space conversions across multiple years or time them to years when their income is lower to reduce this effect.

The conversion itself is taxed at your ordinary income tax rate. The RMD is also taxed at your ordinary rate. There is no special treatment or offset between them.

What happens if you convert after you have already taken your RMD

If you take your RMD in January and convert money to Roth in June, you have already satisfied the RMD requirement. The conversion does not undo that or create a new RMD obligation for that year. You still report both the RMD and the conversion as taxable income.

Some people use this timing strategically: they take their RMD first, which they must do anyway, and then convert additional money if their tax situation allows. This does not reduce the RMD, but it may help them plan their total tax bill for the year.

Roth conversions and future RMDs

While a conversion does not reduce your current-year RMD, it does reduce your account balance going forward. If you convert $200,000 to Roth this year, next year's RMD will be calculated on a lower balance, which means a smaller required withdrawal.

This is the long-term benefit of converting: over time, you move money out of accounts subject to RMD rules and into Roth accounts, which have no RMD during your lifetime. But that benefit applies to future years, not the year of the conversion itself.

Special rules for 401(k) conversions

If you convert money from a 401(k) to a Roth IRA, the same rule applies: the conversion does not count toward your 401(k) RMD. You must still take your full RMD from the 401(k) that year.

Some 401(k) plans allow in-service conversions, meaning you can convert while still employed. Others require you to separate from service first. Check your plan documents or ask your plan administrator what conversions are allowed.

If you have both a 401(k) and an IRA, your RMDs are calculated separately. A conversion from one account does not affect the RMD calculation for the other.

Frequently Asked Questions

If I convert $100,000 to Roth and my RMD is $50,000, do I only have to withdraw $50,000?

Yes, you only withdraw $50,000 from your traditional account to satisfy the RMD. But you must report both the $50,000 RMD and the $100,000 conversion as taxable income that year. The conversion does not reduce the RMD amount.

Can I convert money to Roth instead of taking my RMD?

No. A Roth conversion is a separate action and does not satisfy your RMD requirement. You must withdraw your full RMD from traditional accounts regardless of whether you convert money to Roth.

Does a Roth conversion affect my RMD in future years?

Yes, but only indirectly. The conversion reduces your traditional account balance, so next year's RMD will be smaller. But the conversion itself does not change your RMD for the year it occurs.

What if I convert after December 31 but before I take my RMD?

Conversions must happen in the calendar year. If you convert in January, it is part of that year's taxable income. Your RMD for that year is still based on your December 31 balance from the prior year, so the conversion does not reduce it.

Do I have to report the conversion and RMD separately on my tax return?

Yes. Your RMD appears on Form 1099-R from your IRA or 401(k) custodian. Your conversion also appears on a separate Form 1099-R. Both amounts are reported as income, though the conversion may have different tax treatment depending on your account type and basis.