@AmyC this was very helpful. Thank you!
I have to agree with @shuttle1421 that TT should already have known this since it imported last year's 1040. I too met the 110% rule and paid quarterly estimated tax on time, yet TT still said I owed a penalty. I find it bothersome that TT's question regarding 2022 tax liability references form 2210 line 4! Most people don't have form 2210. The correct reference for prior year's tax liability is form 1040 line 24. Once I updated "other tax situations" with my 2022 tax liability, the erroneous underpayment claim went away.
I used a competing tax prep software for years and this is my first time using TT. The other software had a somewhat less friendly user interface, but it wouldn't make such a silly error. Based on this experience, my confidence in TT is not strong.
