Rule 4 Deduction Calculator
Reduced winnings after a non-runner
How it works
When a runner is withdrawn, a bookmaker may apply a declared Rule 4 deduction to winnings on earlier bets. It reduces profit, not the returned stake. Enter the total deduction quoted by your bookmaker; this avoids guessing which withdrawal price, timing or operator-specific table applies.
A 20% deduction on a 10 bet at 6.00 removes 10 from the original 50 profit. Return: 50. Profit: 40.
Winning cash bet only. Deduction must be 0–90%. The calculator does not decide whether Rule 4 applies or infer rates from withdrawn runners. Place and win parts may have different deductions.
Related calculators
How the Rule 4 Deduction Calculator works
When a runner is withdrawn, a bookmaker may apply a declared Rule 4 deduction to winnings on earlier bets. It reduces profit, not the returned stake. Enter the total deduction quoted by your bookmaker; this avoids guessing which withdrawal price, timing or operator-specific table applies.
Rule 4 Deduction Calculator
A 20% deduction on a 10 bet at 6.00 removes 10 from the original 50 profit. Return: 50. Profit: 40.
Winning cash bet only. Deduction must be 0–90%. The calculator does not decide whether Rule 4 applies or infer rates from withdrawn runners. Place and win parts may have different deductions.
FAQ
Rule 4 Deduction Calculatorexpand_more
Adjusted odds = 1 + (odds − 1) × (1 − deduction). Winning cash bet only. Deduction must be 0–90%. The calculator does not decide whether Rule 4 applies or infer rates from withdrawn runners. Place and win parts may have different deductions.