I have a traditional 401k balance I want to convert to a rollover Roth IRA. How do I find out what my tax implications will be

[Cwdickson23]

I want to estimate my taxes on converting my pre tax 401k balance into a Roth ira

[MinhT1]

This conversion is taxable. And the tax due on this conversion depends on your tax bracket when you add the amount of conversion to your projected taxable income in 2025.

For example, if your marginal tax bracket for the conversion is 32%, then you'll owe $32,000 of additional taxes on a conversion of $100,000.

The marginal tax brackets for 2025 can be found in this IRS document.