I had a situation where I did a huge ROTH conversion in 4Q 2023. This jacked up my income and required a 4Q 2023 huge estimated tax penalty.
However, when Turbo Tax IN filled out IT-2210, it didn't bother to let me document my income for the year, and it saddled me with a $100 penalty because I didn't normalize my estimated tax payments. The thing is, I didn't know I was going to do a ROTH conversion in 4Q. Thus I was entitled to not make an estimated payment throughout the year.
I found the IT-2210A form myself and calculated my 3-mo, 5-mo, and 8-mo interim income with the end year income. After filling this out, my Late Payment Penalty disappeared because it wasn't actually due until the income was realized.
Thus, Turbo Tax IN did NOT create my biggest refund, and I had to find my way to the proper form myself. It should have asked me if I needed to
