Strategy
Arbitrage Betting Alpha Editorial Team ·
How to Hedge a Bet: Equal-Payout and Break-Even Hedges
How to hedge a sports bet with worked math: the equal-payout hedge, the break-even hedge, and what a prediction market fee does to the profit.
Key takeaways
A hedge is a second bet on the other side of a bet you already hold, sized so the result matters less or not at all.
The equal-payout hedge stake is the first bet’s total return divided by the hedge’s decimal odds. A $100 bet at +250 hedged at -150 needs $210.00 and locks in $40.00 either way.
A break-even hedge gets your stake back if the hedge wins and keeps most of the upside if the original bet wins. In the same example it’s $150 and leaves $100 of profit on the original side.
The hedge leg carries its own cost. On a prediction market, the fee raises the effective price, so the same 60¢ hedge locks in $37.48 on a Novig live straight and $34.12 at Kalshi’s taker rate.
What hedging a bet means
You hedge when you already hold a bet and the price on the other side has moved enough to guarantee something. The usual case is a long shot that’s still alive late, such as a futures ticket before the final or the last open leg of a parlay.
The original bet is fixed. Its stake and odds don’t change, so the only decision is how much to put on the other side, and where.
An arb and a hedge differ in timing. An arb is placed all at once at prices that already add up to less than 100%. A hedge reacts to a price that moved after you bet, and whether it locks in a profit depends on how far the price moved.
The equal-payout hedge
This version pays the same amount whichever side wins. Convert both prices to decimal odds, then:
Hedge stake = original stake × original decimal odds ÷ hedge decimal odds
Take a $100 bet at +250, which is 3.50 in decimal and returns $350 if it wins. The other side is now -150, or 1.6667 in decimal.
Hedge stake: $350 ÷ 1.6667 = $210.00
If the original bet wins: $350 back, minus $310 staked in total, is $40.00 profit.
If the hedge wins: $210 × 1.6667 = $350 back, minus $310, is $40.00 profit.
Without the hedge, the ticket either made $250 or lost $100. The hedge swaps that range for $40 on either result.
The break-even hedge
Plenty of bettors don’t want a flat result. They want their money back if the long shot fails and most of the payout if it hits. That’s a smaller hedge:
Hedge stake = original stake ÷ (hedge decimal odds − 1)
With the same prices, $100 ÷ 0.6667 = $150.
If the hedge wins: $150 at -150 returns $250, which covers both stakes ($250 total). The result is $0.
If the original bet wins: $250 profit on the original, minus the $150 hedge, is $100.
A stake between $150 and $210 sits between the two results, with more locked in if the hedge wins and less left if the original bet wins.
Where the hedge leg goes
The hedge is a new bet, so it pays a margin like any other. At a sportsbook that margin is already in the -150 price. On a prediction market the price is a contract cost, and the fee is added on top of it.
A -150 price is a 60¢ contract. The equal-payout hedge on the $100 ticket above needs 350 contracts, which pay $350 if the hedge side wins. Here’s what each fee does to the locked profit, using each platform’s published taker formula on a live trade:
Where the hedge is placed | Fee per contract | Effective price | Hedge cost | Locked profit |
|---|---|---|---|---|
Sportsbook at -150 | Built into price | 60.0¢ | $210.00 | $40.00 |
Novig, live straight (most sports) | 0.72¢ | 60.72¢ | $212.52 | $37.48 |
Kalshi, taker | 1.68¢ | 61.68¢ | $215.88 | $34.12 |
Novig charges no fee on pre-game straight trades, so a hedge placed before the game starts costs the 60¢ price and nothing more. Most hedges happen once a game or a series is underway, which is why the live rate is the one in the table. The prediction markets guide has the full fee formulas.
Two checks before you place the hedge leg on a prediction market:
Liquidity: 350 contracts at 60¢ only fill at 60¢ if that many are resting on the book. A thin market fills the rest at a worse price.
Settlement: Confirm the contract settles on the same result as your original bet, including overtime and postponement rules.
When a hedge costs more than it saves
A hedge always gives up some expected value, because the second bet carries a margin of its own. If you made the first bet because you thought the price was good, hedging trades part of that edge for a smaller swing.
That trade is often worth making when the payout is large relative to your bankroll. It’s rarely worth making on a small ticket you’d be fine losing. The math only tells you what each choice locks in. Whether the certainty is worth the cost is a bankroll decision.
Hedging questions
Is hedging the same as cashing out?
No. A cash-out is the sportsbook buying your bet back at a price it sets, and that price includes its margin. A hedge is a bet you place yourself, at whatever price you can find, which is often better than the cash-out offer.
Can I hedge a parlay?
Yes. Treat the parlay as one bet with its combined odds, and hedge the last open leg. The equal-payout formula works the same way, using the parlay’s total return.
Do I have to hedge at the same sportsbook?
No, and it’s usually better not to. Checking a second sportsbook or a prediction market for the best price on the other side raises the amount you lock in.
Run the numbers
Enter your original stake and odds and the current price on the other side in the hedge calculator. It returns the equal-payout hedge stake and the profit it locks in.
Run the numbers before you bet
The arbitrage calculator is free and doesn’t need an account.