GAME & ENTERTAINMENT – GAMBLING & BETTING MATHEMATIC CALCULATOR
Trading Betfair
A precise tool.
What is the Trading Betfair & How does it work?
In Betfair trading you first place a back bet at a certain price (odds) and then try to lay the same selection at a lower price. The back bet wins if the selection finishes first, while the lay bet wins if it does not, allowing you to lock in a profit regardless of the outcome.
Because Betfair charges a commission on winning bets, the effective lay price you receive is reduced by the commission rate. This must be accounted for when calculating the required lay stake to achieve a target profit or to minimise risk.
The core calculation balances the liability of the lay bet against the potential return of the back bet. By solving for the lay stake you can determine the exact amount to lay so that the net result (after commission) meets your desired profit.
S_{lay}=\frac{O_{back}\times S_{back}}{O_{lay}-c}
S_{lay} = lay stake, O_{back} = back odds, S_{back} = back stake, O_{lay} = lay odds, c = commission fraction
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Frequently Asked Questions
How do I calculate my profit in Betfair trading?
Enter your back and lay odds, the amount you want to bet, and the commission rate. The calculator will show your potential profit.
What is the difference between a back bet and a lay bet on Betfair?
A back bet wins if the selection finishes first, while a lay bet wins if it does not. You aim to lock in a profit by placing both bets at different odds.
How does Betfair commission affect my trading?
Betfair charges a commission on winning bets, which reduces the effective lay price you receive. This must be accounted for in your calculations.
Can I use this calculator for horse racing or other sports?
Yes, this calculator can be used for any selection available on Betfair, including horse racing, football, and more.
What is the target profit in Betfair trading?
The target profit is the amount of money you aim to make from your trade. You input this into the calculator to determine the required lay stake.
How do I interpret the results from this calculator?
The calculator will show you the potential profit or loss based on the odds, stakes, and commission rate you entered. Adjust these variables to optimize your trade.
Is there a minimum or maximum stake for Betfair trading?
Betfair has minimum and maximum stake limits that vary by market and selection. Always check these limits before placing your bets.
Results are for informational purposes only and do not constitute professional advice.