Sportsbook promos: what each type is worth

What kinds of promos do sportsbooks give existing customers?

Five kinds, in the form of tokens or opt-ins in the app. The table lists each one with the books that run it in SlateProof's catalog, which prices them automatically on the live dashboard.

Catalog terms checked October 5, 2026 (DraftKings and FanDuel); October 6, 2026 (BetMGM, Fanatics, BetRivers and Hard Rock Bet). Figures the catalog marks as assumed were not published by the book, and many tokens are targeted to some accounts, so your app may show different caps. The offer in your app is the one that counts.

How do you value a profit boost?

A profit boost raises the winnings, not the stake: the boosted decimal price is d_b = d + min((d - 1) x b x S, cap) / S and the expected value is S x (p x d_b - 1). At a fair price and with no cap this simplifies to S x b x (1 - p): a 50% boost on a bet with a 60% chance is worth $2.00 on $10.

The cap is what most people miss. The DraftKings 50% profit boost in SlateProof's catalog assumes a $10 maximum wager, $5 of maximum extra winnings and odds of -200 or longer. On a $10 bet at +150 (decimal 2.50) with a 40% fair chance, the uncapped boost would add $7.50 and raise the decimal price to 3.25, worth $3.00. The cap holds the extra to $5, the price to 3.00 and the value to $2.00. Hedge it on the other side at decimal 1.67 (-150) and you stake $18.00 to lock $2.00. The profit boost calculator applies the cap for you.

Are parlay boosts worth it?

They can be, because the boost pays for the margin the legs compound, but only on near-fair legs. Take 3 legs at -110 each, a combined +596. With each leg a coin flip once the vig is removed, the parlay wins 12.50% of the time. A $25 bet is worth -$3.26 unboosted and $6.05 with a 50% boost.

Three limits apply. Boosts come with a minimum number of legs and often a minimum total price (BetMGM +400 and Fanatics +300 in the catalog). Legs from the same game are correlated, so a simple product of leg chances is not enough. And a cap on the extra winnings keeps the dollars small. In an offline test of 474 real three-leg tickets built from near-fair legs, a 30% boost returned roughly +18% to +35% and a 50% boost roughly +33% to +53% across two pricing methods, with intervals that touch or exclude zero. The same tickets without a boost were about break-even. That is a small sample of capped bets, not a promise.

How much is a no-sweat bet worth?

Less than its face, because the refund usually comes back as a bonus bet. The value is S x (p x d - 1) + (1 - p) x c x S, where c is what a refunded dollar is worth.

For a $25 bet at +200 with a 31% fair chance, the bet alone is worth -$1.75; the refund turns that into the amounts below. The refund is a bonus bet, not cash, so describing it as risk-free would be wrong: you can still lose the cash stake and get back something worth less.

Every refund promo SlateProof checked on October 6, 2026 paid bonus bets or FanCash, which converts one to one into bonus bets, so the first row is the one that usually applies. Read the bonus bets guide for how to convert the refund.

What is an early-win promo?

An early-win token pays your moneyline bet as a win if your team leads by a set margin at any point, even if it loses the game. Its value comes from the chance of a blown lead: S x ((p + L) x d - 1), where L is the chance the team leads by the margin and still loses.

Say you bet $50 at +100 on a team with a 48% chance to win, and assume a 10% chance it leads and still loses. Without the token the bet is worth -$2.00; with it, $8.00. The 10% is an assumption for the example; in an offline test SlateProof's blown-lead model predicted 10.3% and the games showed 10.8%. The catalog tracks these tokens:

• DraftKings MLB Early Win (pays if your team goes up 2 runs)
• FanDuel MLB Early Win (up 2 runs)
• FanDuel NFL Early Win (pays if your team goes up 7)

Maximum wagers and eligible games are set by the book and shown in the app, so the catalog marks them as assumed.

Do existing-customer promos need a promo code?

Usually not. Existing-customer promotions are mostly tokens or opt-ins inside the app, in a Promotions, Promos or Rewards tab. SlateProof's catalog has no codes, and we do not list any.

Many tokens are targeted, so one account sees a boost that another does not, and sizes differ by account. That is why the catalog shows typical terms and marks assumed figures: your app shows the real ones. Do not trust a figure from a page that does not show when it was checked.

Which promos can be hedged to lock a profit?

Bonus bets, profit boosts and no-sweat bets can be hedged cleanly; early-win tokens partly; parlay boosts rarely. A hedge places the other side at a second venue so both results leave you with the same profit.

The hedge can go to another sportsbook or to an exchange after its fee. Check the hedge calculator for your numbers, and note that some promo terms bar betting both sides, books can void a bet at an error price, and a locked profit holds only if both bets are accepted.

Where can I see today's best promo plays?

On the live dashboard, which prices every catalog promo against sharp market prices and lists the best play for each with exact stakes, the chance it pays and the hedge at each venue. Its values are estimates, and SlateProof tracks each daily pick on paper so the result can be judged later.

Keep going

Value a new-customer offer in the sign-up offers guide, convert a bonus bet with the bonus bet calculator, and compare the sportsbooks that run these promos. The methodology page explains how fair probabilities behind these values are built.