The short answer
The house edge on Hard 6 and Hard 8 is 9.09%, while the edge on Hard 4 and Hard 10 is a brutal 11.11%.
The full calculation
A Hardway bet is resolved when the shooter rolls the specific number or a 7. For Hard 6/8: There are 5 ways to lose to a 7, plus 4 ways to lose “easy” (any other 6 or 8). There is only 1 way to win (the pair). The bet pays 9 to 1. $EV = ( rac{1}{10} imes 9) + ( rac{9}{10} imes -1) = -0.0909$
For Hard 4/10: There are 6 ways to lose to a 7, plus 2 ways to lose “easy.” There is 1 way to win. The bet pays 7 to 1. $EV = ( rac{1}{9} imes 7) + ( rac{8}{9} imes -1) = -0.1111$
What this means at the table
These are “sucker bets.” If you put $25 on the Hard 4, the casino expects to keep $2.77 of that bet every time it is resolved. If you play the center of the table, your bankroll will disappear roughly eight times faster than a player sticking to the Pass Line. In an hour of play, a Hardway bettor will lose significantly more money for the exact same amount of “action.”
Common mistakes around this number
Players often “Press” their hardways after a win. While hitting a Hard 8 for $225 feels great, parlaying that win just exposes more of your money to a 9.09% disadvantage. The stickman is trained to encourage these bets because they are the highest profit generators for the house. Don’t let the high payouts distract you from the reality that these bets are designed to break you.
See also
Read the Craps Hardways overview or see the Craps Proposition Bets for even worse odds.
In Detail
Hardway house edge is where the casino smiles with all its teeth. The bets are simple, sticky, and very easy to overpay for.
This page is about the real cost of hard 4,6,8,10. 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. Hard 6/8: $EV=(9-10)/11=-9.09%$. Hard 4/10: $EV=(7-8)/9=-11.11%$. 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: These bets can sit there for several rolls before resolving, which makes them feel safer than they are. 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 leave hardways working just because the dealer asks. 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.