I'm not bothered by this risk. If a mistake is made and I owe additional taxes, then I'll just pay what I owe. No biggie.
I understand that an hour is valuable, but that hour you spend checking your tax documents may be the highest-leverage hour of work you do that year.
This implies that I'm taking some huge risk or would be absurdly overpaying my taxes or something. I don't think either of those things are true. In the larger picture, this isn't really that big of a deal.
> I guess if you assume
I assume none of those things.
> that hour you spend checking your tax documents may be the highest-leverage hour of work you do that year.
It would be more than an hour, but the time isn't even the biggest issue. The biggest issue is the stress, worry, and hassle. It's just a basic cost/benefit calculation here, no different than other cases where I accept a level of increased expense or some risk because it costs more than I'm willing to pay to mitigate it. I have bigger fish to fry than this. Micromanaging this would reduce my overall happiness by adding an additional thing to worry about.
Everyone's cost/benefit calculation is different, of course, and if yours indicates that you'd be better off being more diligent about this stuff, that's entirely fair as well.
And that's absolutely insane. That's tens of millions of man hours per year spent essentially on rote data entry of data that the IRS already has so that you can submit it to the IRS for them to check against their copy.