Earlier quoted context omitted.
Not consulting a real tax advisor is probably going to cost you much more. I wouldn't be saving on tax advisors. Moreover, I would hire two different tax advisors, so I could cross check them.
Most people’s (USA) taxes are not complex, and just require basic arithmetic to complete. Even topics like stock sales, IRA rollovers, HSAs, and rental income (which the vast majority of taxpayers don’t have) are straightforward if you just read the instructions on the forms and follow them. In 30 years of paying taxes, I’ve only had a tax professional do it once: as an experiment after I already did them myself to s…
Technically, all you have to do is follow the written instructions. But there are a surprising number of maybes in those instructions. You hit a checkbox that asks whether you qualify for such-and-such deduction, and find yourself downloading yet another document full of conditions for qualification, which aren't always as clear-cut as you'd like. You can end up reading page after page to figure out whether you should check a single box, and that single box may require another series of forms.
My small side income takes me from a one-page return to several pages, and next year I'm probably going to have to pay estimated taxes in advance because that non-taxed income leaves me owing at the end of the year more than some acceptable threshold that could result in fines. All because I make an extra 10% doing some evening freelancing.
Most people's taxes shouldn't be complex, but in practice they're more complex than they should be.