Use our matched betting calculator to calculate your lay amounts and bet profit.
Matched betting is the process of backing and laying all outcomes of an event to either: secure a bonus bet or liquidate a bonus bet for a guaranteed profit. Our matched betting calculator calculates the lay bet required to match the back bet for an equal return on either outcome. It also displays the Betfair liability and the winning returns you will get from the bookmaker and the exchange. Use the calculator for: