They're not perfect, but I've had success filing with FreeTaxUSA - federal is free, state is $15: https://www.freetaxusa.com/ Obviously too late for people this year, and my tax situation is relatively straightforward so I can't speak to how well it handles edge cases, but the first year I used it I went through the process with both TurboTax and FreeTaxUSA and got the exact same estimated refund. The last straw with…
-Of the three options, TurboTax returned the highest amount owed to federal and state govt
-CreditKarma and FTUSA’s federal totals owed were ~$2k less than TT, and a few hundred $ less owed for state
-FTUSA was the least expensive option of the three, at ~$80 less owed than CreditKarma
I’m not sure why the totals were different, but it was absolutely worth it to go through the process three times. Especially to not support Intuit’s lobbying practices.