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Would you really mind paying 10k USD if you made a million profit? I know I wouldn't if it means I made a million in profit.
lol @ 10k...
if you made a million profit in short term it means 25% tax. I guess you would mind that ;-)
Depends on the country and the tax regulations there.
If you are not an extremely active trader (read: it is actually your job), you are only subject to capital gains tax in The Netherlands, which is between 0,8 and 1,8% next year.