The Basics

On a single zero roulette table the House advantage is 2.7%. On a double zero roulette table it is 5.26% 7.9% on the five number bet, 0 00 1 2 3. The House advantage is gained by paying the winners a chip or two or a proportion of it less than what it should have been if there was no advantage. See Roulette Quiz The Casino Advantage.