The short answer
The Odds bet is a supplemental wager placed behind your Pass Line or Come bet that carries exactly 0% house edge. It is the best bet in any casino.
The full calculation
Casinos pay the Odds bet at true mathematical odds, meaning they take no profit (“vig”) on the transaction. The payout depends on the Point number:
- Point 4 and 10: 3 ways to roll vs. 6 ways to roll a 7. Odds: 2 to 1. Payout: 2 to 1.
- Point 5 and 9: 4 ways to roll vs. 6 ways to roll a 7. Odds: 3 to 2. Payout: 3 to 2.
- Point 6 and 8: 5 ways to roll vs. 6 ways to roll a 7. Odds: 6 to 5. Payout: 6 to 5.
Because the payout perfectly matches the probability, the Expected Value ($EV$) of every dollar placed in the Odds area is exactly $0.00.
What this means at the table
The Odds bet is how you make the casino pay for your seat. If you bet $10 on the Pass Line and $50 in Odds, you are putting $60 at risk, but the house only has a mathematical claim on the $10. This reduces your “blended” house edge to approximately 0.23%. In a standard session, taking full odds can be the difference between leaving with your shirt or going home empty-handed.
Common mistakes around this number
Players often forget that while the Odds bet has a 0% house edge, it increases your volatility. You are putting more money on the table, so the swings will be bigger. The biggest mistake is “short-weighting” the odds. If you bet $25 on the line but only $25 in odds at a 10x table, you are failing to exploit the casino’s zero-edge offering. You should bet $5 on the line and $50 in odds instead.
See also
Review the Craps Odds Chart for a quick payout guide or look at the 3x 4x 5x Odds breakdown.
In Detail
Odds bets are craps’ cleanest math hiding in plain sight. The casino allows them because you must attach them to a bet that already carries edge.
This page is about right-side and wrong-side odds behind line and come bets. On the surface, that may sound like one small corner of craps, but in a real casino it touches the three things that decide whether a player survives the table: the written rule, the payout, and the way the bet feels when chips are already in action. Craps is dangerous for beginners because a bet can feel smart, social, or lucky while still being badly priced.
The math that matters: Two dice create 36 equally likely ordered combinations. The shape of the game comes from that grid: 7 has 6 combinations, 6 and 8 have 5 each, 5 and 9 have 4 each, 4 and 10 have 3 each, 3 and 11 have 2 each, and 2 and 12 have only 1 each. The true odds formula is $\frac{P(7)}{P(\text{point})}$ for right-side odds after a point is set. Expected value is the grown-up way to price a bet: $EV=\sum(P_i\times W_i)-\sum(P_j\times L_j)$. If the payout is smaller than the true probability deserves, the difference is the house edge.
What it means on the felt: Odds are a pricing tool, not a prediction tool. They do not make the shooter more likely to hit the point. A player who understands this subject does not need to act like a robot. You can still enjoy the noise, the shooter, the stick calls, and the little rush when the dice leave the hand. The point is to know when you are paying for entertainment and when you are making a lower-cost decision.
Casino-floor truth: Craps is built to move. The table crew wants clear bets, fast decisions, and clean payouts. The layout also nudges attention toward action. The safest-looking move is not always the cheapest move, and the loudest bet is almost never the best one. Good craps play is not about predicting the next roll. It is about refusing to overpay for it.
The mistake to avoid: Do not brag that odds beat the casino. They are fair bets attached to unfair bets. Also, never judge this topic by one lucky hit or one ugly loss. Short sessions are noisy. The math only shows its face over repeated decisions, which is exactly why casinos are patient and players are usually not.