Bonus Bet (Free Bet)

A bonus bet, often called a free bet, is a promo offer where the sportsbook puts up the stake for a wager at no cost to you. If the bonus bet wins, you keep the profit — the payout minus the stake — but you don’t get the original stake back. This “stake not included” setup is the key thing that sets bonus bets apart from normal bets, and it has a big effect on what they’re really worth.

Bonus bets are one of the most common promo tools sportsbooks use to pull in new customers and keep current ones happy. You’ll often see them in sign-up packages, deposit matches, or ongoing loyalty rewards. Because you don’t get the stake back when you win, a bonus bet is worth less than its face value. A $100 bonus bet, for example, isn’t really worth $100 — its true value depends on the odds you use it on, and you can squeeze more out of it by placing it on longer-odds picks.

Example

A sportsbook hands you a $50 bonus bet as part of a welcome offer. You place it on a pick with American odds of +200. If it wins, the profit is based on the $50 stake, so you get $100 in profit. But unlike a normal $50 bet at +200, you don’t get the $50 stake back — only the $100 profit lands in your account. If it loses, you’re out nothing of your own since the book covered the stake. To get the most from this bonus bet, you went with longer odds, which boosts the potential profit relative to the stake you never get back.

Key Points

• Stake isn’t returned: The defining feature of a bonus bet is that the original stake isn’t part of the payout when you win. Only the profit lands in your account.
• Best at longer odds: Since the stake is gone either way, placing bonus bets at higher odds gets you the most return relative to the bet’s real value.
• A go-to promo tool: Bonus bets show up everywhere — sign-up bonuses, referral rewards, and ongoing promos. They’re among the most common perks legal sportsbooks offer.
• Comes with rules: Most bonus bets have conditions like expiration dates, minimum odds, and limits on which markets you can use them in. Always read the terms first.
• You can do the math: The expected value of a bonus bet can be worked out based on the odds you pick, which helps you decide how best to use these promos.