Free Matched Betting Calculator
A free matched betting calculator works out your lay stake, liability, and guaranteed profit instantly, so you never have to do the maths by hand. Australian punters can use the
Bonusbank Matched Betting Calculator,
built specifically for local bookmakers and Betfair Exchange.
Open The Free Calculator →
🔢 What You Enter
Four simple inputs give you an instant result.
- Back Stake: The amount you are betting at the bookmaker.
- Back Odds: The decimal odds the bookmaker is offering.
- Lay Odds: The current decimal odds on the betting exchange.
- Exchange Commission: The percentage the exchange charges on winnings, normally 6% on Betfair.
📈 What You Get Back
Click calculate and the tool instantly returns three numbers.
- Lay Stake: The exact amount to risk on the exchange.
- Liability: The amount held in your exchange account to cover the bet if it loses.
- Position Profit/Loss: Your final result, which stays the same no matter which side wins.
✅ Bet Modes To Choose From
| Mode | When To Use It |
|---|---|
| Normal / Qualifying Bet | Qualifying for a bookmaker promotion with minimal loss. |
| Free Bet SNR | Stake not returned. Standard bonus bets where you only keep the winnings. |
| Free Bet SR | Stake returned. The bookmaker refunds your stake along with the winnings. |
❓ Frequently Asked Questions
Is the Bonusbank calculator free?
Yes. The Bonusbank Matched Betting Calculator is free to use and built for Australian bookmakers and Betfair Exchange.
Do I need to know how to do the maths myself?
No. Enter your back stake, back odds, lay odds, and commission, and the calculator handles the rest.
Which bet mode should I pick?
Use Normal for qualifying bets, Free Bet SNR for standard bonus bets, and Free Bet SR when your bookmaker refunds the stake as well as the winnings.