Types of Horse Racing Bets, With the Maths Behind Each One

This guide explains each bet, shows the arithmetic for boxes, keys and wheels, and works through real-style payouts so you can price a ticket before you buy it.

How pari-mutuel pools pay

Each bet type in each race has its own pool. Before anyone is paid, the track removes the takeout. At Churchill Downs, which hosts the Kentucky Derby, the Associated Press reported takeout rates of 17.5% for win, place and show and 22% for most exotics after a 2014 increase. What remains is divided among the winning tickets in proportion to their stakes, then rounded down by breakage, typically to the next 10 cents per dollar.

Two rules follow from that. A bet on a horse that many people like returns less, and the posted odds can drift until the gates open because the pool is still growing. Neither the track nor the ADW is betting against you; they earn the same percentage whoever wins.

Straight bets: win, place and show

Worked example: how a show pool is shared

Imagine a show pool of $300,000. After 17.5% takeout, $247,500 is left. Horses A, B and C fill the first three places with $60,000, $40,000 and $30,000 bet on them to show, so $130,000 goes back as stakes and $117,500 is profit to share. Divided three ways, each group of backers receives $39,166.67.

The finishing order inside the top three does not matter for show; only how much was bet on each horse does. Place pools work the same way with two shares instead of three. When a heavily backed favorite finishes in the frame, the profit share can be so small that the track must top payouts up to the legal minimum, usually $2.10 on a $2 ticket. That shortfall is called a minus pool.

Exotic bets in one race

Exacta

Pick the first two finishers in exact order. Because the order matters, an exacta pays far more than two place bets on the same horses. At Churchill Downs the 2025 Derby menu allowed $2 straight exactas and $1 exacta boxes and wheels.

Quinella

Pick the first two finishers in either order. It costs the same as one exacta combination but pays less, because two orders win. Not every track offers it; the Churchill Downs wagering guide lists exactas but no quinella.

Trifecta

Pick the first three in exact order. The minimum at Churchill is 50 cents per combination, which makes multi-horse tickets affordable.

Superfecta and Super High Five

Pick the first four (superfecta) or first five (Super High Five) in order. Churchill set a 10-cent superfecta minimum on ordinary days and $1 on Oaks and Derby days in 2025. These pools often pay thousands of dollars for small stakes, but the odds of hitting them are long.

Boxes, keys and wheels: what each ticket costs

Ticket cost equals the number of combinations multiplied by the base stake. The formulas below cover the common structures, with n as the number of horses you select.

Notice that the first three rows all cost $12 but cover different ground. The exacta box needs two of four horses in the top two in any order; the superfecta box needs four of five in the top four. A cheaper base stake lets you cover more horses, but your share of the pool shrinks in step: a 10-cent superfecta winner collects one tenth of what a $1 ticket would.

Worked example: box or key?

Say you like horse 6 to win and see horses 2, 9, 11 and 15 as the main threats. A $1 trifecta box of all five horses costs $60 and wins in any order. A $1 trifecta key with horse 6 on top and the four others underneath costs $12 and wins only if horse 6 wins. If you are confident in horse 6, the key covers your opinion at one fifth of the price; if you are not, the box protects you but needs a big payout to show a profit.

A middle ground is to key horse 6 in first and second: 6 over the others (12 combinations) plus the others over 6 over the others in third (4 x 3 = 12 more), making 24 combinations, or $24 at $1.

Multi-race bets

The cost of a multi-race ticket is the product of the number of horses chosen in each leg times the base stake. Two horses in each leg of a 50-cent Pick 4 is 2 x 2 x 2 x 2 = 16 combinations, or $8. Adding a third horse in one leg raises it to 24 combinations and $12. Spread wide in the races you find hardest and single the horse you are most sure about.

Probables and will-pays: pricing a ticket before the race

Tote boards and ADW apps show more than win odds. Exacta probables list what each $2 or $1 combination would pay if the race started now, and before the last leg of a multi-race bet the track posts will-pays showing the return for each possible winner of that leg. Checking these numbers stops you from building a ticket whose best realistic outcome barely covers its cost.

A quick test helps. Suppose the probables show the exacta 4-8 paying $38 for $2, and you are considering a $2 exacta box with horses 4, 8 and 13. That box costs $12. If 4-8 is the combination you think most likely, the box returns $38 when it hits, a profit of $26. If the other likely combinations pay less than $12, the box loses money even when it wins. In that case a straight exacta 4-8 for $6 (three $2 tickets) would return $114 on the same result, for half the outlay.

Exacta or two win bets?

Some bettors ask whether an exacta beats simply backing the two horses to win. They answer different questions. Two $5 win bets on horses at 6-1 and 9-1 cost $10 and return $35 or $50 if either one wins, whatever finishes second. A $10 exacta on the same pair in one order returns only if both run first and second in that order, but the payout typically reflects odds closer to multiplying the two prices together. Neither is better in general, and both pay from pools that have already lost their takeout. Use win bets when you think one of a few horses will win; use an exacta when you have a view on the order of the finish.

Scratches, dead heats and other rules

• Scratched horse, straight bet: the bet is refunded.
• Scratched horse, exacta or trifecta: combinations containing it are refunded; the rest stand.
• Scratched horse, multi-race bet: many tracks give you the post-time favorite instead of a refund in that leg. Rules vary, so read the house rules for the track you are betting.
• Coupled entries: when two horses run as a coupled entry (for example 1 and 1A), a bet on one covers both. Entries are less common than they were, but they still appear.
• Dead heat: when two horses tie, the pool is split between the two groups of winning tickets, so each pays less than a clear win would.
• Disqualification: payouts follow the official order after the stewards rule, not the order the horses crossed the line. In the 2019 Derby, tickets on Maximum Security lost when he was placed 17th.

Real Derby payouts for scale

The 2026 Derby is a useful benchmark. Golden Tempo won at 23-1. According to the Action Network’s results summary, a $2 exacta paid $278.86 and a $1 superfecta $94,489.95, with the longshot Ocelli in third. A five-horse $1 superfecta box covering the first four home would have cost $120 and returned the full $94,489.95, but someone building that box would have had to include two longshots, the 23-1 winner and Ocelli, among just five picks. That is why most superfecta bettors key one or two horses and spread underneath.

Choosing a bet type for the Derby

Large fields reward different bets from small ones. With 20 starters, exactas and trifectas pay well even when the favorite runs well, while show bets on the favorite pay very little. If you have one strong opinion, a win bet plus a small exacta key is a tidy way to express it. If you think the race is wide open, small-stake trifecta part wheels let you cover several scenarios without paying for a full box.

Whatever you choose, set a budget first. For where to place the ticket legally, see how to bet on the Kentucky Derby. To judge which horses deserve a place on your ticket, read our horse racing basics, and for the field and prep races, the Road to the Kentucky Derby. The home page has the 2027 overview, and help with gambling problems is on our responsible gambling page.

Bet types: common questions