The House advantage

The la partage roulette rule is similar to the en prison rule, only in this case the player loses half the bet and does not have the option of leaving the bet en prison for another spin. This refers to the outside even money bets Red/Black, High/Low, Odd/Even and applies when the outcome is zero. Both the La Partage and the En Prison roulette rules essentially cut the casino edge on the even money bets in half. So a bet on Red on a single zero roulette table with the la partage rule or the en prison rule has a 1.35% House edge and one on a double zero roulette table has a House edge of 2.63%.