Matched Betting Calculator
Back & Lay method for qualifying bets and bonus bets. Learn more
Our matched betting calculator helps you calculate back and lay stakes to lock in a guaranteed outcome when completing qualifying bets or converting bonus bets — fast, simple, and accurate.
This free back and lay calculator is built for Australians looking to make consistent, risk-free profits from bookmaker promotions using a method known as matched betting. It’s easy to use, beginner-friendly, and powerful enough for advanced bettors who want to maximise value from every bonus.
Whether you're placing a qualifying bet to unlock a reward or using a free bet to secure profit, our back lay calculator works out the exact lay stake you need to place on a betting exchange to balance the outcome. This removes the risk, allowing you to keep the bonus — not lose it.
Whether you're placing a qualifying bet to unlock a reward or using a free bet to secure profit, our back lay calculator works out the exact lay stake you need to place on a betting exchange to balance the outcome. This removes the risk, allowing you to keep the bonus — not lose it.
The calculator handles decimal odds, common exchange commissions, and both stake returned and stake not returned (SNR) bet types. It’s a must-have tool if you’re doing any kind of back to lay betting, lay back arbitrage, or want to build a repeatable system for sports betting profits.
- Quick calculations for both qualifying bets and free bets
- Works with all decimal odds and Betfair commission rates
- Ideal for back/lay betting strategies and arbitrage
- 100% free — no sign-up, no subscriptions
- Mobile-friendly and fast
Whether you're betting on the Premier League, Aussie horse racing, or other popular events, our calculator helps ensure you always place smart, risk-managed bets. It’s trusted by people who want a smarter, more calculated approach to sports betting — without gambling in the traditional sense.
The back and lay calculator is the core tool behind every successful matched betting system. It allows you to remove emotion and guesswork from your bets and replace them with precise, mathematical outcomes that compound over time.