johno1234:
Right. So you get a job in on the other side of town, or your kids are going to school there. Sell your house for $1M that cost you $500K 10 years ago and pay a fat CGT tax on it. Now you don't have enough money to buy the same value house? How on earth is that fair? You've just lost a chunk of your net worth simply by moving from one side of town to the other? I don't think so.
I would say that they will date it, at the time it came in. Not retrospectively. So if your house is now $1M, and you sell in ten years time for $2M, then yes, you can pay 39% on the $1M.
A. I can't imagine either party actually implementing it
B. It would only ever be set for a current date, not retrospectively.
C. The net worth is interesting, I'm sure Gareth Morgan's book spoke about this, a property increases in price as much as the effort of the community around it as well. So if you have new neighbours that park wrecked old cars etc, the value might drop. Equally, if your neighbours keep everything mown and painted, your value may increase.