Here's how it should work! The IRS has a page, you can go look at it and say "eh ok" or you can click further and do whatever you think is important to update.

And the tax companies can offer to do that "click further" for you, and you then would see how much they saved you (if any at all). Heck, make it so the IRS always charges a "I dun wanna read anything" fee of $50 that you can get out of by clicking "uh no" like the presidential one. That would satisfy most people, heh.

Complex scenarios can still be handled by hand if the taxpayer wants.