Casino War is the simplest game in the casino, until you hit a Tie. Then you face a critical mathematical decision: Surrender (lose half your bet) or Go to War (double your risk)?
This calculator analyzes the Expected Value (EV) of both options to show you the mathematically correct move. It also exposes the massive House Edge on the optional “Tie Bet.”
The Math: Surrender vs. War
Most players are scared to “Go to War” because they have to put up a second bet. However, the math proves this fear is costly.
- Surrender: You lose 50% of your bet instantly. House Edge: 3.7% (on the tie decision).
- Go to War: You risk 2 units to win 1 unit. Since you win the “War” 50% of the time, the math works out better. House Edge: ~2.8%.
Conclusion: Always Go to War. Surrendering saves money in the short term but bleeds your bankroll faster in the long run.
Frequently Asked Questions (FAQ)
Is the “Tie Bet” worth it?
No. The Tie Bet pays 10:1, but the true odds of a tie are much lower. The House Edge on this side bet is over 18%. It is one of the worst bets in the entire casino.
What happens if we tie again during War?
In most casinos, if you tie a second time (during War), you get a bonus payout (usually 1:1 on the raise). This rule makes “Going to War” even more profitable mathematically.