For canadians at Harrahs / WSOP , for poker
its 30% if the profit is 5000 or more. ( actually could be 5001 or more , not sure )
they dont care if u have 100k losses in other mtts previously
they dont care if u have fired a zillion bullet in a 1k event .
They have different rulings about the 5000$ for other casino games , such as table games, slots or sportbets .
other casinos have other rules ... for exemple , i was taxed 88$ on this one 14 years ago lol
too, i know someone who got taxed after he bullseyed a spread in NFL.
-jpp