I'm having the exact same problem. I can't figure out why Line 4b is not zero. I have not been converting every year, but sometimes every other year. So while the previous contribution from 2023 is still sitting in the Traditional non-deductible IRA accumulating a little interest, which will be taxable, the majority of the contribution from the previous year should still not be deductible. Anyone have any ideas what is going on? This has worked perfectly fine in past years. I'm using TT 2024 Home & Business.
