That "nearly" is doing an awful lot of heavy lifting. It doesn't matter if your AI model is 99% or 99.99% accurate. For a tax return it has to be perfect every time or someone is at best getting a fine or at worst going to prison.
This is wildly out of touch with reality, at least in the US. The IRS barely audits anyone anymore, and if you make a mistake and they catch it, they often just correct it and send you a letter. You might pay a little in penalties, but it’s not that big of a deal. And I know literally dozens of small business owners who pretty blatantly dodge taxes in a hundred different ways and none of them have ever gotten so much as a slap on the wrist. And some of them have been audited!
I don’t think “I know plenty of people who commit fraud anyway so who cares if it’s right” is the ringing endorsement of AI you think it is.
This literally has nothing to do with AI? I’m pointing out that taxes aren’t some magical area where you must be exact to the penny or hellfire will rain down on you. Hundreds of millions of Americans file their taxes and many have mistakes major and minor, intentional and not. The world somehow keeps turning.