Casino War strategy

Casino War is the simplest game in the casino. You get one card, the dealer gets one card, and the higher card wins. There’s no hand to build and no chart to memorise. Yet the game still has a right and a wrong play, and a side bet that quietly costs six times as much as the main game. This guide covers the rules, the payouts, how a war is settled and the two rules that make up the whole strategy. Figures are for a standard six-deck game unless noted, per Wizard of Odds analysis and reproduced exactly in Casino Coach’s code.

How to play

1. Place your bet. Put your main wager in the betting circle. You may also make the optional tie bet.
2. The deal. You and the dealer each get one card face up. Aces are high; suits don’t matter.
3. Higher card wins. If your card is higher, you win even money. If the dealer’s is higher, you lose your bet. Example: your Q♥ against the dealer’s 9♣ wins $10 on a $10 bet.
4. On a tie, choose. Say you have 8♠ and the dealer has 8♦. You can surrender, giving up half your bet, or go to war by placing a raise equal to your original bet.
5. The war. The dealer burns three cards, then deals one card to you and one to themselves.
6. Settle the war. If your war card is equal or higher, your raise wins even money and your original bet pushes. If the dealer’s war card is higher, you lose both bets.

Ties aren’t rare. With six decks, a tie on the first two cards happens about 7.4% of the time, a little more than one hand in fourteen.

Payouts

Here’s how a $10 hand settles after a first-card tie:

Strategy

The whole strategy fits in two lines.

Rule 1: Always go to war

At the moment of a tie, compare the two choices per unit of your original bet. Going to war averages about −0.389. Surrendering is always exactly −0.500. Going to war is better by about 0.11 units every single time, whatever the rank of the tied cards. A tie on 2s and a tie on aces are the same decision, because the war is a fresh draw.

It can feel risky, because going to war puts double your money on the line. But you only lose both bets when the dealer’s war card is higher. When the cards tie again, you win. That edge in your favour on the second tie is what makes war the better play.

Rule 2: Never bet the tie

The tie bet pays 10:1, but a first-card tie only lands about 7.4% of the time with six decks. That gives the tie bet an 18.65% house edge at six decks. Fewer decks make it worse: per Wizard of Odds it’s 25.24% with two decks and 35.29% with one.

That’s the entire skill side of Casino War. Everything else is luck.

Common mistakes

• Surrendering on a tie. It raises the house edge from 2.88% to 3.70% at six decks. Each surrender costs about 0.11 of your bet compared with going to war.
• Betting the tie. At 18.65%, every $10 on the tie costs about $1.87 on average, against about $0.29 for $10 on the main bet.
• Thinking a high tie is safer to war on. The tied rank makes no difference. The war is a new pair of cards.
• Not having chips for the raise. If you can’t match your bet on a tie, you’re forced into the worse option. Keep enough behind for a war.
• Chasing losses with bigger bets. The edge is the same on every hand. Bet size changes your swings, not your expected loss per dollar.

House edge explained

Ordinary hands are a coin flip. You and the dealer are equally likely to have the higher card, and both pay even money. The entire house edge comes from ties.

When you go to war, two of the three outcomes are fine for you: you win the raise when you’re higher, and you also win on a second tie. But look at the money. When you lose, you lose the original bet and the raise. When you win, the original bet only pushes. That imbalance is where the house earns its 2.88%.

Surrendering is worse because it always loses half your bet, with no chance of winning anything back.

Rules to look for

• Tie-after-war bonus. Some casinos pay a bonus equal to your original bet when the war cards tie. That cuts the edge from 2.88% to 2.33% at six decks.
• Fewer decks. Going to war without the bonus costs 2.42% with one deck, 2.70% with two, 2.88% with six and 2.90% with eight.

For comparison, blackjack with basic strategy runs about 0.5% and the craps pass line 1.41%. Casino War is a fair-to-middling game when you play it right, and a poor one when you add the tie bet.

Practice in Casino Coach

Casino Coach deals Casino War from a real six-deck shoe with a cut card, and you can switch the tie-after-war bonus on or off. In trainer mode, every tie decision is graded: if you surrender, you see the EV of war against surrender and what it cost you. Tie bets are flagged with their extra cost. You can also turn on an option that blocks the wrong move until you choose war. Two drills sharpen the rest: Tie decision and War payouts, which has you work out the net result of a hand after a war. Your sessions, hands and graded decisions flow into analytics, with actual versus expected results and CSV export. Chips are free and have no cash value. Train Casino War free and lock in the two rules.

Updated October 24, 2026