You pay the 5% as soon as you place the bet.
Always check the house rules regarding when the commission is collected: craps buy bet
Are you interested in learning about like "laying" odds or using the "Iron Cross" system? How to Play Craps | Simple Guide | Resorts World Catskills You pay the 5% as soon as you place the bet
Because you’re paying a 5% commission, the Buy Bet isn't always the best move. It depends entirely on which number you are betting on: Buy Bet Payout 2:1 (minus vig) craps buy bet