This is similar to other questions but with a difference, I think.
In January, 2025, I did a backdoor conversion of a nondeductible contribution to a Traditional IRA into a Roth IRA. A balance of $15 was left in the traditional IRA.
In September, a previous employer 401k was rolled over into the nearly empty traditional IRA account. Entering the balance of the Traditional IRA as of December 31, 2025 into Turbo Tax results in a tax liability of several thousand dollars.
The monies of the backdoor conversion never intermingled with the traditional IRA rollover. Why does the tax liability go up so much? How would I enter this so it does not.
