[santraginean]

> the tax form should be upheld as the gold standard

Should, yeah.

> Was this issue due to paper tax forms doing a calculation one way, but the IRS's implementation doing it another way?

No, it was straight up wrong, and could only have been human error. As far as I can make out, their calculation only made sense if you took the full printed tax return and lost the back half of it. (And also ignored the part of the law that says capital gains tax doesn’t apply if you lived in a home more than two years before selling).