I will put in my usual plug for another wonderful program. It has a clean simple tax planning portion among it's multiple TOOLS. Look into Tax Tools https://www.taxtools.com/products_tt.aspx

If you ever do a 1031, it really pays for itself, but I regularly use it's tax planner as it is simple and can do forward projections or multiple options for same year. Another regular is the RMD calculator and loan amortizations.