How to Calculate a Payoff for a Bet at the Kentucky Derby

Bets to Win

    You might like Lucky Duck, and bet on him to win. If he goes off at 2-1 odds and does indeed win, multiply the first number -- 2 -- by the amount of your bet. If you bet $2, this comes out to $4. But you also get your wager back, so add this into the payoff as well. You’d come away with $6 on a $2 bet. If Lucky Duck went off at 20-1 odds, you’d win $42 on a $2 wager: two times $20 plus your $2 bet. With odds that don’t end in one, divide the first number by the second number, then multiply the result by the amount of your bet. Assuming you placed a $2 wager on a 7-5 horse, you’d win $4.80: 1.4 times two, plus your $2 bet.

Place and Show Wagers

    If you bet Lucky Duck to place or come in second rather than win, your bet will still pay off if he comes in first. The horse you wager on must finish the same or better than the wager you placed on him for you to win money. So even if you bet on him to show or come in third, you'd collect money if he won -- he just did better than you anticipated. But the winning horse must share the place and show pools with the horses who actually come in second or third. The place pool is shared by the first and second place horses and the show pool is shared by the first, second and third place horses. Because all these horses usually go off at different odds, no easy calculation exists for figuring place and show payoffs.

About the Author

Beverly Bird has been writing professionally since 1983. She is the author of several novels including the bestselling "Comes the Rain" and "With Every Breath." Bird also has extensive experience as a paralegal, primarily in the areas of divorce and family law, bankruptcy and estate law. She covers many legal topics in her articles.