Compare n' Bet™
Compare n' Bet™
Sportsbook promotions are one of the biggest and most reliable sources of value for casual bettors, and most people don't use them well. This guide covers the main types of offers, how to evaluate them, and how to actually convert them into real money.
US sportsbooks spend massive amounts on customer acquisition and retention. Welcome bonuses, odds boosts, and recurring promotions are tools to get you to sign up, deposit, and keep betting. The books expect that most customers will lose long-term even after accounting for promotional value, so the math works for them on average.
But the math doesn't have to work for them on you. If you understand how to evaluate promotional offers, you can extract real value from a market that's designed to onboard casual bettors. The key is treating promotions like the financial products they are rather than like free money.
The classic welcome offer. "Deposit $100, get $100 in bonus bets." You deposit, the book matches it with site credit (not cash). The site credit typically has to be wagered once at minimum odds before any winnings convert to withdrawable cash.
These used to be incredibly generous (200% to 500% match on some offers). The market has matured, and current standard deposit match offers in the US run about 100% up to a cap of $500 to $1,000 in bonus bets.
"Bet $5, get $200 in bonus bets instantly." These are lower deposit offers designed to get new users placing a single small bet before receiving a larger bonus. The bonus is usually paid in bonus bets, not cash.
Bet-and-get offers are often the best welcome promotions because your initial risk is small. A $5 bet to receive $200 in bonus bets (even if the bonus bets convert at only 70% of face value) is roughly +$135 in expected value for a $5 commitment.
"Your first bet is on us up to $1,000." If your first bet loses, you get bonus bets equal to your stake back. If it wins, you keep the winnings as cash and the promotion is over.
The math on these depends on what you bet and at what odds. Betting a 50/50 coin flip at -110 with a $1,000 first-bet-protection offer is close to break-even for the book, meaning close to +EV for you.
Almost all sportsbook promotions pay out in bonus bets (also called free bets or site credit), not cash. The distinction is huge.
When you win with a bonus bet, you only get the profit from the bet, not the stake. A $100 bonus bet on a +100 moneyline doesn't pay $200 if it wins. It pays $100, because the "stake" portion is the bonus itself and doesn't convert to cash.
This means bonus bets are worth roughly 65% to 80% of their face value depending on what you bet them on. A $100 bonus bet used on a -110 favorite is worth about $91 in expected value. The same bonus bet used on a +500 long shot can be worth more because the return (if it hits) is bigger.
Because bonus bets don't return stake, they're most valuable on long shots where the profit portion dominates the total return. A bonus bet on a +400 moneyline returns $400 if it wins and costs you nothing if it loses. The expected value is higher than using the same bonus bet on a short price.
Conventional wisdom among promotional bettors is to use bonus bets on moderate underdogs (+200 to +500 range) rather than favorites. The math supports this, though variance is higher.
Some promotions require you to wager the bonus a certain number of times before winnings become withdrawable. This is called playthrough or a wagering requirement.
US legal sportsbooks generally keep wagering requirements modest. A typical deposit match might require you to bet the bonus once at minimum odds (usually -300 or -200) before withdrawing. That's reasonable.
Older or offshore books sometimes had wagering requirements of 10x or higher, which is effectively designed to prevent you from ever withdrawing the bonus. US books have largely moved away from these predatory structures, but always read the terms before committing.
Most bonus bets can only be placed on bets at minimum odds of -200 or -300 (depending on the book). This prevents you from using the bonus on a huge favorite that's essentially guaranteed to win. The restriction is why understanding the minimum-odds rule matters when planning how to use a bonus.
Bonus bets usually expire 7 to 30 days after being issued. If you don't use them, they disappear. Treat a bonus bet balance like an asset with an expiration date. Use them or lose them.
"Patriots -6 boosted from -110 to +100." The sportsbook takes a market and improves the price, usually for limited stakes (often capped at $25 or $50 per boost). Boosts are often on parlays but sometimes on single bets.
Boosts are real value when the boosted price puts the bet in positive expected value territory. A team at -130 in the actual market boosted to +100 is clearly a good bet if you'd take it at -120 or better. But many boosts are on bets that were priced poorly to begin with, and the boost only brings them back toward fair value without actually giving you an edge.
Evaluate each boost by asking: what would this bet price at without the boost, and does the boosted price beat the fair price by more than the vig?
"If one leg of your 4+ leg parlay loses, get your stake back as a bonus bet." Parlay insurance feels generous but is structured to encourage parlay volume. The book is happy to refund one losing parlay in bonus bets because the parlays you're placing are high-margin for them on average.
Parlay insurance does have real value when you were going to parlay anyway, but it shouldn't encourage you to place parlays you otherwise wouldn't. A bonus bet refund on a losing parlay is worth only a fraction of the face value, and using that bonus bet on another parlay just compounds the vig.
"Get a 25% boost on any single bet up to $50." Similar to odds boosts but applied to your winnings rather than changing the posted odds. These stack on top of the existing market price, so they're more reliably good value than boosts on pre-selected bets.
A 25% profit boost on a -110 single bet is meaningful. The effective price becomes roughly +115 instead of +91, which is real expected value improvement on any bet you were already going to make.
Some books offer loyalty programs (points that convert to bonus bets or merchandise) and loss rebates (a portion of your losses returned, usually for high-volume players). These are more relevant for frequent bettors than for occasional ones.
Don't let a loyalty program change how much you bet. If a book's loyalty benefits push you to bet more than you'd otherwise bet, the program is a trap, not a perk.
Every promotion has terms. Read them. Look for:
Convert bonus bets to cash equivalent at their realistic conversion rate (70% to 80% is a safe rule of thumb). Factor in any wagering requirements. Compare what you get to what you risk. If the expected value is positive by more than the inconvenience is worth, it's a go.
Before you accept the offer, know exactly what you'll bet the bonus on. An unplanned bonus often gets used on impulse bets that destroy its value. A planned bonus (e.g., "I'll place $200 in bonus bets on moderate underdogs at +250 to +400") maximizes the expected conversion.
Some bettors make promotional value a core part of their betting strategy. The approach:
Done systematically, promotional betting can be a legitimate source of expected value. It requires discipline, tracking, and a willingness to only bet when the promo makes the math work.
Most sportsbook promotions are structured to encourage parlay play, high-frequency betting, and tied deposits. These are all behaviors that produce losses for most bettors even with promotional value factored in.
A "free" $50 in bonus bets is not free if it gets you in the habit of placing $500 in bets you wouldn't otherwise have placed. The math on the bonus is fine, but the total behavior is a net loss.
Daily missions, loyalty point multipliers, streak bonuses, and similar gamification mechanics are all designed to increase your engagement with the app. They work. If you find yourself logging in or placing bets because there's a reward streak at stake, you've moved from strategic play to compulsive play.
Sportsbooks can and do limit accounts that they determine are using promotions too effectively or too frequently. If you're grinding out promotional value, you might find your future offers becoming less generous or your account capped at smaller stakes. This is the cost of being good at promotions.
Line shopping and promotional hunting often work together. If a bonus requires you to place a bet at minimum odds, shopping across books for the best price on your target bet can meaningfully improve the expected value of the promotion.
Compare n' Bet shows current odds across every supported sportsbook, making it easy to find the best price for a specific bet you want to use a bonus on. For promotional bettors with accounts at multiple books, this kind of comparison is essential to consistently extracting value.
Sportsbook promotions are real value, but only if you use them strategically. The difference between a bettor who converts $500 in sign-up bonuses into $400 of expected cash and one who converts the same bonuses into $50 is just discipline and math.
Read the terms. Do the expected value calculations. Use bonus bets on the right price points. Don't let promotions push you into bets or behaviors that destroy their value. And remember that every promo is a customer acquisition tool designed to benefit the book more than you. Your edge comes from being the exception.
This guide is for informational purposes only. Compare n' Bet does not offer gambling advice or predictions. Sportsbook promotional offers vary by state, operator, and time. Always read the specific terms of each promotion before participating. Please gamble responsibly.