After entering all my data, I printed a copy of my return for review. I noted that the tax liability computed by Turbo Tax was less than that computed by an Excel routine that I use to keep track of taxes during the year. I then computed tax due using the tables in form 1040 instructions and the amount agreed exactly with the Excel amount. Is this a problem with Turbo Tax or has some tax law changed that I don't know about? The Turbo Tax tax liability is less than computed from 1040 tables.
