Commission Calculator

This tool calculates your true profit from a betting exchange market after all commission fees have been applied.

How to Use:

  • Net Winnings on Market: Enter your total profit on a single market *before* any commission is deducted (e.g., £100).
  • Market Base Rate (%): This is the exchange's default commission rate. For most sports markets on Betfair, this is 5%.
  • Discount Rate (%): This is your personal discount (e.g., from Betfair Points). If you don't have a discount, enter `0`.

The Calculation

Commission is not just the Base Rate. It's the Base Rate *after* your discount has been applied.

Effective Rate = Base Rate * (1 - Discount Rate)

Commission Paid = Net Winnings * Effective Rate

Example: You win £100 on a 5% market with a 20% discount.

  • Effective Rate = 5% * (1 - 0.20) = 4%
  • Commission Paid = £100 * 4% = £4.00
  • Your Net Profit = £100 - £4.00 = £96.00

Calculate your true profit after exchange commission and discount.

(e.g., 5% is common for sports)

(0% if no Betfair Points discount)

Commission Summary:

Commission Paid:

Net Profit (After Commission):