Calculator

Cashback bonus calculator

When a bookmaker offers cashback on your qualifying bets, this calculator adjusts the lay stake so that the cashback flows through to your expected value.

Factor bookmaker cashback into your back-and-lay math.

Back stake

Back odds

Lay odds

Bookie cashback

Exchange commission

Lay bet

Lay stake: $96.53
Liability: $101.36
Cashback: $5.00

Scenarios

If back wins: -$1.36
If lay wins: -$1.36
Expected value: -$1.36

Protect your cashback margin

Cashback edges are small. A 3% vs 5% exchange commission difference is often larger than the bookmaker promo itself.

Lay on SharkbetX (SBX): a flat 3% charged on net winnings only, with no premium-charge haircut on winning accounts.

Open an SBX account

Affiliate link · 3% commission on net winnings only