Folks might want to consider looking up “irs free file”. The irs government website then links to multiple private companies with free software for filing taxes. Some states also participate. If you have less than $60K in income and nothing unusual (farm income, royalties, etc), then it can be a good option.
So can having a human do you taxes for $100-500. A decent tax pro can also offer advice on how to minimize taxes, get credits you might have missed or how the irs or state government will view a deduction for XYZ. Spending $250 for a human can save someone $1000 in taxes, or prevent a fraudulent return going in. Sometimes penny wise pound foolish applies...
If your income is high, or you need complicated forms, you can file electronically for free with Free Fillable Forms:
https://www.freefilefillableforms.com
They’ve got everything you need. I typically file a 1040 with Schedules A, B, and D and the AMT form 6251. You just have to be able to read the IRS instruction booklets and put the right numbers in the right place.
I keep spreadsheets with the IRS line numbers on them, and just plug in my new numbers every year. You do have to check the IRS booklets for amounts though; things like the AMT allowance can change from year to year.