Matched betting is the technique professionals use to extract modeled cash value from sportsbook promotional offers. It is math, not gambling — and PromoGrind gives you every calculator you need to do it for free.
Read the full guide →Matched betting is a systematic method for converting sportsbook promotional offers — welcome bonuses, bonus bets, profit boosts, insurance bets — into modeled cash value by hedging the qualifying bet at a second sportsbook. The two bets cancel each other out, leaving only the value of the promotion as profit. Done correctly, the outcome of the underlying game is irrelevant.
Sportsbooks offer promotions to acquire and retain customers. Those offers have real monetary value that can be extracted through hedging. This is generally permitted for eligible users, subject to local law and operator terms — you are accepting terms that the sportsbook has published and using a second licensed sportsbook to hedge. There is no deception involved, only math. The IRS treats winnings as taxable income, so keep records.
Step 1: Sign up at multiple licensed sportsbooks. The more books you have access to, the more offers you can claim. Start with the highest-value welcome offers: DraftKings, FanDuel, BetMGM, and Caesars are typically the most generous in the US.
Step 2: Claim the welcome offer and read the terms carefully. Note the bonus amount, any minimum odds requirements, and whether the bonus is "bonus bet" style (only the profit paid out) or "cash" style (stake returned).
Step 3: Use PromoGrind's bonus bet converter or profit boost calculator to determine the optimal bet size and hedge stake. The calculator tells you exactly how much to bet at each book to maximize modeled return.
Step 4: Track everything in PromoGrind's ledger. Accurate records are essential for tax purposes and for measuring your true ROI.
Traditional matched betting in the UK relies on Betfair or another lay exchange. In the US, those exchanges are not available. PromoGrind uses a second sportsbook as the opposing side. Instead of laying on an exchange, you simply bet the other outcome at a different book at comparable odds. The math is identical — you just need accounts at multiple books instead of an exchange account.
Do not start from a population earnings range. Inventory only current offers for which you are eligible, enter live prices and constraints, and treat each output as a model. Your ledger—not a marketing benchmark—shows whether the process created realized value.
Modeled returns are not promises. Execution, voids, limits, eligibility, and changing odds can alter results.