Also, is there a way to avoid these taxes without getting into trouble?
Depends on what you're up to!
Avid some taxes by financial optimization, which means depending on what casino you play and the laws in your state withdraw just the right amount compared to your deposits so you can claim you had no profit from that activity or simply avoid paying a dime despite cashing out.
There is no way to avoid the law completely without risking getting into trouble, it's a bit like speeding, you might get away year after year breaking the law or you can get caught 10km from your home on your first try.
Also, the thing is pretty complicated depending on a ton of factors, for example here:
- are unemployed, then your winning won't be counted as taxable over x
- you are employed and you already are in the superior tax bracket every single penny will be taxed
- physical shops tax your winning on cash-out automatically, so there is no way to avoid this, lotteries do the same