@qwer1234 wrote:
Can I use the market value at that moment as the cost base?
Also, can long-term capital loss in stock markets offset this capital gain?
No.
Yes.
Were there any loans/mortgages on the property? You could also have a gain or loss due to currency conversion with a loan. If that is the case, you'll want to go to a tax professional that specializes in Nonresident Aliens and/or international taxation.
