- He sells some of the land to pay the taxes.
- He takes out a loan to pay the taxes.
- We make a special carve-out for people in that situation so that the tax doesn't apply to them.
The third solution seems kind of fake to me. "We don't like the results of this set of rules, so we're going to make exceptions for all the results that we don't like." Maybe it's telling us that the rules aren't all that great?
> money now is worth more than money later. Letting people defer paying taxes on unrealized capital gains is VERY generous tax treatment.
They don't have the money yet. Charging them tax on money they haven't even received yet seems like very ungenerous tax treatment - abusive, even. It only makes sense if you have already defined unrealized capital gains to be income - but that's begging the question.