Depending on the number of decks used, there is always less than 3% of the edge of the house during the war, and always surrendering to raise the edge of the house to around 3.7%. The difference is due to the player winning the war if it is also a draw.

As we said above, it may be that the best casino to play this game is powered by Microgaming, as the double bonus reduces the edge of the house. See some of the best casino bonuses below to allow casino wars.