This is great, and I appreciate the approach. Yes, tax calculation should be a decision tree. Unfortunately it is truly pretty complicated (just this year I had to abandon FreeTaxUSA for TurboTax because the latter handled an important case I needed better). But I have a lot of faith that we can do this right. Good luck!
Funny, after 10+ years of using TurboTax Online I moved to FreeTaxUSA last year and it's like a breath of fresh air. TurboTax couldn't do what I needed to do (e-file a late return) and FreeTaxUSA had no problem with doing that.
