If anybody wants free tax preparation software, check out Cash App. I used it for the past 2 years without any issues. Before that I used the free version on Credit Karma. After Turbo Tax's owner (Intuit) bought Credit Karma they eliminated that benefit.
During the year I also do "now look" estimates with Excel based "freeware" developed by Glenn Reeves.
Federal Income Tax Spreadsheet Form 1040 (Excel Spreadsheet) Income Tax Calculator