Thank you for publishing this question last year. The issue still remains and I believe I've tracked my solution down to differences in Capital Gains and its affect on my overall tax (for previous years but using old data to plan for year-end tax planning...) My question is : why can't TurboTax just add a worksheet that clearly summarized the calculations for line 16??! Seems like a simple and easy solution to put into place. And please don't tell me that the "tax smart worksheet" does the job because I have searched the complete set of my previous year documents, and that worksheet doesn't exist in my data/document set.
Anyway, thanks for asking the question as it is the same place my audit of previous year taxes paid went off the rails...
