As fanfare said, there is no option to undo a Roth conversion. Regarding the "reverse" rollover that DanaB27 suggests, since you have already converted to Roth in 2025 and amount equal to your ba...
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As fanfare said, there is no option to undo a Roth conversion. Regarding the "reverse" rollover that DanaB27 suggests, since you have already converted to Roth in 2025 and amount equal to your basis in nondeductible traditional IRA contributions, you would have to roll over to an employer plan all of your remaining traditional IRA funds. That would cause all $14,000 of your basis to be applied to your $14,000 of Roth conversions. If you can't do this rollover, only about 12% of your Roth conversions will be nontaxable and 88% of your basis in nondeductible traditional IRA contributions will remain in your traditional IRAs to be applied to future ordinary traditional IRA distributions. Not what you originally intended, but not necessarily a huge mistake since it just means you will be paying some additional taxes with your 2025 tax return instead of paying taxes on this amount in the future.