Bonus bet converter: lay it at the exchange
Lay stake and cash kept when you hedge a bonus bet on a horse at Betfair.
Your bet
Enter the back bet you're placing at the bookmaker and the lay odds available at the exchange.
A bonus bet where only the winnings are paid out. The lay locks in a share of the bonus as cash.
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What to lay
Place this lay at the exchange and your result is the same whichever way the bet goes.
Fill in your bet details to see the lay stake.
How it works
- Back the selection with the bonus bet, then lay the same selection at the exchange.
- Lay stake = bonus × (back odds − 1) ÷ (lay odds − commission rate), so you keep the same cash win or lose.
- Longer odds usually convert a stake-not-returned bonus bet better.
Betting involves risk. Bookmakers can restrict or close accounts and void bets, automation can fail, prices move, and a positive expected value (+EV) bet can still lose. Promotions carry each bookmaker's own terms. There is no guarantee of profit. See responsible gambling for limits and support.
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All toolsBy the B337 team. Last updated .