Here in Sweden you generally don't even need help. Naturally there are people with disabilities, or complex financial situations, but that's not most people. For me personally, filing taxes means I log on to the tax office's website, skim through the details to make sure there's no egregious clerical error, and then I click a button to sign off on it. It takes about 5 minutes a year.

If you deal in stocks or buy/sell property a lot it might get a bit more complicated. I think my roomie had deductions because of how much they drives for work, so that added like 5 minutes for supplementary information.

I'm convinced the U.S. makes it complicated for predatory reasons.