Bonus Bet (Free Bet)

A bonus bet, also widely known as a free bet, is a promotional offer where the sportsbook covers the stake for you at no cost. If the bonus bet wins, you keep the profit — the payout minus the stake amount — but the original stake itself doesn’t come back to you. That “stake not included” setup is the key thing that sets bonus bets apart from ordinary wagers, and it directly shapes how much they’re really worth once you put them to use.

Bonus bets are one of the most common promo tools sportsbooks use to bring in new customers and keep current ones happy. You’ll often see them as part of sign-up packages, deposit matches, or ongoing loyalty rewards. Because the stake doesn’t come back on a winner, the true value of a bonus bet is lower than its face amount. A $100 bonus bet, for example, isn’t actually worth $100 — its expected value rides on the odds you place it at, and you can squeeze out more value by using bonus bets on picks with longer odds.

Example

A sportsbook hands a bettor a $50 bonus bet as part of a welcome offer. The bettor places it on a pick with American odds of +200. If the bet wins, the profit is figured on the $50 stake, which comes to $100 in profit. But unlike a regular $50 bet at +200, the bettor doesn’t get the $50 stake back — only the $100 profit lands in the account. If the bet loses, the bettor is out nothing from their own pocket, since the sportsbook supplied the stake. To get the most from this bonus bet, the bettor went with longer odds, which boosts the potential profit relative to the stake that won’t be returned.

Key Points

• Stake not returned: The hallmark of a bonus bet is that the original stake isn’t included in the payout when you win. Only the profit portion lands in your account.
• Best used at longer odds: Since the stake is gone no matter what, placing bonus bets at higher odds gets you the most return relative to the bet’s real value.
• Common promotional tool: Bonus bets show up everywhere — in sign-up bonuses, referral rewards, and ongoing promos. They’re among the most frequent perks legal sportsbooks hand out.
• Subject to restrictions: Most bonus bets come with strings attached, like expiration dates, minimum odds requirements, and limits on which markets you can use them in. Always read the terms before you place the bet.
• Calculable value: You can estimate the expected value of a bonus bet mathematically based on the odds you choose, which helps you make smart calls about how to use these promos.