@xmasbaby0
I live in Ohio and don't have AMT concern, the major savings by filing separately is in state income tax, while federal tax are identical if my wife and my taxable income fall in the same tax bracket.
I use CD version of TT. For me to do the comparison, I typically do MFJ first, save the tax file. Using save-as twice to save two additional tax files. Then, modify these two files by modifying and deleting the extra data for her and my MFS returns. I thought by doing it this way, I don't need to enter the same data twice. However, some years it gave me trouble, such as Smart Check finding errors in 8889-S HSA, and the error message was confusing and I couldn't easily fix it; not sure if I had missed deleting some extra data or was it just TT program hiccups. So, sometimes, I wonder if it was just easier to start my MFS returns from scratch.
You mentioned the CD version having a “what if” feature that allows comparisons”. Does TT has a build-in somewhat automatic process, allowing easier to do what-if comparison than the "manually" process I was doing? Could you please elaborate on that? Thank you.
