if you won a 1 million$ lottery how much would you probably get after the taxes?

depends, is 1mil the actual amount or the 'jackpot'? if it's the jackpot, they pay by an annuity and youcan roughly cut the amount in just about half for a straight up cash payment. and about 60% left after taxes. and split in half again if there's another (or more times if more) numbers. best to bet on about 30% of the advertised number.