Calculate the exact value of any sportsbook profit boost and find the optimal hedge bet to convert it into guaranteed cash with the PromoGrind Profit Boost Calculator.
Both profit boosts and bonus bets are sportsbook promotions, but they work differently in one critical way: with a profit boost, your stake is returned on a win. You place real cash, and if your bet wins you get your money back plus the boosted profit. A bonus bet (free bet), by contrast, returns only the profit — the stake itself is gone regardless of outcome. This makes profit boosts higher EV on a dollar-for-dollar basis.
A profit boost increases the profit portion of your payout by a fixed percentage. A 50% boost on a +200 bet raises the effective odds to +300: the original +200 profit becomes +300 profit (200 × 1.5). A 25% boost on -110 odds raises the effective odds to approximately -88. The calculator handles all these conversions automatically — just enter the base odds and the boost percentage.
Hedging a profit boost turns an uncertain enhanced payout into a guaranteed locked-in profit. By betting the opposing side at another sportsbook for the calculated hedge amount, you ensure you profit regardless of which team wins. The net guaranteed return is lower than the boosted win, but it is risk-free and immediate.
As a general rule, boosts of 25% or more on a reasonably liquid market are worth hedging. A 25% boost on even-money odds typically produces a 10–12% guaranteed return on stake. Smaller boosts under 10–15% generate minimal hedge profit relative to the time and account exposure involved, though large stake sizes can still make them worthwhile.