NFL Odds and What a Line Actually Costs
A sportsbook publishes two prices and never publishes the number those prices contain. This page works out the hold, the no-vig fair line and the compounded margin on a parlay from whatever prices you are looking at, so a line can be priced before it is taken.
Every NFL market carries a margin, and the two prices on your screen are the only place it is visible. A standard −110 on both sides of a spread holds 4.55%, which is the share of everything staked that the book keeps when the money is balanced.
We publish no lines on this page. Lines move constantly and a dated snapshot of a stale number is worse than none, so the tools below work from the prices you are actually being offered. Every figure is arithmetic you can repeat.
Key Takeaways
- A standard −110 on both sides holds 4.55%. The 4.76% figure quoted elsewhere is the overround, which measures the same margin against a different base.
- The no-vig fair price is the market's real probability with the margin stripped out, and it is the number to compare any opinion against.
- Parlay margin compounds. Four legs at 4.55% each hold 16.98%, which is worse than roulette.
- Implied probability is the break-even win rate. A −110 spread needs you right 52.38% of the time to lose nothing.
- Crypto sportsbooks diverge from each other more than regulated books do, which is what makes cross-book comparison worth the effort.
What Does an NFL Line Cost?
It costs the hold, which is the book’s cut expressed as a share of everything staked. Enter both sides of any NFL market and the calculator returns it, along with the fair price underneath.
| Implied probability, side A | 52.381% |
|---|---|
| Implied probability, side B | 52.381% |
| Sum of implied probabilities | 104.762% |
| Overround | 4.762% |
| Hold, the book's cut | 4.545% |
| No-vig fair probability, A | 50.000% |
| No-vig fair probability, B | 50.000% |
| No-vig fair price, A | +100 / 2.0000 |
| No-vig fair price, B | +100 / 2.0000 |
| Cost per 100 staked on a balanced book | 4.55 |
A standard −110 on both sides holds 4.55%, not 4.76%. The larger figure is the overround, which measures the same margin against a different base. Anything under 3% is a sharp market and anything over 6% is a market you are paying a lot to enter.
Read the hold row first and the two fair price rows second. The fair prices are what the market believes once the margin is removed, and they are the only honest baseline for judging whether a number is good.
Crypto Sportsbooks Compared
Every published casino in the register recorded as running a sportsbook, ranked by our score. All twelve are recorded either way and eleven run one. Wild.io is the only published entry recorded as casino only, and Betplay and CoinCasino are held back pending research rather than omitted.
| Casino | KYC at signup | Networks | Min deposit | Claimed payout | Our score |
|---|---|---|---|---|---|
| Wall Street Memes | None | WSM, BTC, ETH, DOGE, ADA | $20 | 1 to 3 hours | 9.9 prov. |
| BC.Game | None | BTC, ETH, XRP, USDT, LTC | $5 | 1 hour | 9.8 prov. |
| LuckyRollers | On withdrawal | BTC, ETH, USDT, XRP, USDC | $20 | 0 to 4 hours | 9.6 prov. |
| Cryptorino | None | BTC, ETH, LTC, BNB, USDT | None | 15 minutes | 9.4 prov. |
| Mega Dice | On withdrawal | DICE, BTC, ETH, DOGE, BCH | $20 | 0 to 24 hours | 9.3 prov. |
| Instant Casino | On withdrawal | BTC, ETH, USDT, DOGE, LTC | EUR 20 | Near instant | 9.2 prov. |
| Lucky Block | On withdrawal | TON, BTC, BCH, LTC, DOGE | $20 | 0 to 24 hours | 9.2 prov. |
| BetPanda | None | BTC, ETH, XRP, USDT, LTC | 0.1 uBTC | Instant | 9.2 prov. |
| Thrill Casino | On withdrawal | BTC, ETH, USDT, SOL, XRP | none stated | 1 to 30 minutes | 8.9 prov. |
Every figure here is dated and carries its confidence. KYC model, networks and minimum deposit come from industry listings unless a casino’s own terms say otherwise, and no payout time in the register has been measured by us yet, which is why every score is provisional.
Comparing Hold Across Common NFL Markets
Typical two-way prices by market type and what each holds. These are the standard shapes rather than live prices, and the calculator above handles whatever you are actually seeing.
| Market | Typical two-way price | Hold | Cost per $100 staked |
|---|---|---|---|
| Spread, both sides | −110 / −110 | 4.55% | $4.55 |
| Total, both sides | −110 / −110 | 4.55% | $4.55 |
| Reduced juice spread | −105 / −105 | 2.38% | $2.38 |
| Moneyline, close game | −120 / +100 | 4.35% | $4.35 |
| Player prop | −115 / −115 | 6.52% | $6.52 |
| Alternate line or exotic | −125 / −125 | 10.00% | $10.00 |
The pattern holds across every sportsbook. Margin rises as the market gets more specific, so the props and alternates you are offered cost double a main spread while the reduced-juice spread costs half. Where you place your bet matters less than which market you pick.
Why Parlay Margin Compounds
Because a sportsbook prices a parlay by multiplying prices that already carry margin, so the margin multiplies with them. This is the single largest cost difference available on an NFL slate and no book states it.
| Offered parlay price | +1228 |
|---|---|
| Offered parlay decimal | 13.2833 |
| True probability of all legs | 6.249% |
| Fair parlay price | +1500 |
| Parlay hold | 17.00% |
| Hold if bet as singles instead | 4.55% |
| Expected value per 100 staked | −17.00 |
Hold compounds because the book multiplies prices that already carry margin. At 4.55% per leg, 4 legs hold 17.00%. Betting the same legs as singles holds 4.55% instead, which is the entire case against parlays and it is arithmetic rather than opinion.
Per-leg true probability is derived from the assumed hold, because de-vigging exactly needs both sides of every leg. Lower the assumption for a sharp book and raise it for a soft one.
Four legs at the standard hold come to 16.98%, against 4.55% on the same legs bet singly. Your parlay is not a worse bet because it is harder to win. It is worse because you pay the margin four times over.
Converting NFL Odds and Reading a Break-Even Rate
American, decimal and fractional are three notations for one number, and implied probability is that number expressed as a break-even win rate.
| American | -110 |
|---|---|
| Decimal | 1.9091 |
| Fractional | 10/11 |
| Implied probability | 52.38% |
| Break-even win rate | 52.38% |
| Profit on a 100 stake | 90.91 |
| Total return on 100 | 190.91 |
Implied probability and break-even win rate are the same number. A price of −110 needs you right 52.38% of the time to lose nothing, which is why a coin-flip market at −110 is a losing bet rather than an even one.
The break-even row is the useful one. A −110 spread needs 52.38% accuracy to lose nothing, so a coin-flip opinion on a spread is a losing position rather than a neutral one.
How to Read an NFL Spread
A spread is a handicap that moves the result rather than a prediction of it. The favourite gives away points and the underdog receives them, and the price beside the spread is what you pay for that line.
The number
A favourite at −3.5 has to win by four or more for the bet to land. The half point removes the push, which is why books use it.
The price
The −110 beside it is what you pay. The same spread at −105 is the identical bet for half the margin, and over a season that difference is larger than most handicapping edges.
The move
A spread that moves from −3 to −3.5 changed because money or information arrived. Your price is fixed at the moment you took it, whatever the line does afterwards.
Where Crypto Sportsbooks Differ on NFL
In margin and in consistency rather than in the markets offered. An offshore crypto book runs without the local licensing that standardises pricing, so the spread between books on the same game is wider than it is between regulated operators.
That cuts both ways. You can find a better number if you hold accounts at several books, and you will take a worse one if you hold a single account and never compare. Comparing the hold on the same market across two books is a thirty second check and it is the highest-value habit on this page.
Settlement is the other difference, and it is the one we measure. Our payout benchmarks time withdrawals to on-chain confirmation with the transaction hash attached.
Best Crypto Sportsbook Bonuses
The multiplier is not the cost. Turnover is, and it is the multiplier applied to a base that varies by book. The column below works out what clearing a $100 bonus actually demands at each sportsbook in the register.
| Casino | Welcome bonus | Wagering | Turnover on $100 | Min deposit | Our score |
|---|---|---|---|---|---|
| Instant Casino | 200% up to $7,500 + 10% cashback | 15x | $1,500 | EUR 20 | 9.2 |
| BC.Game | Four deposit bonuses up to 360% | 40x | $4,000 | $5 | 9.8 |
| LuckyRollers | 100% up to 30,000 USDT + 100 free spins | 40x | $4,000 | $20 | 9.6 |
| Wall Street Memes | 200% up to $25,000 + 50 free spins | 60x | $6,000 | $20 | 9.9 |
| Mega Dice | 200% up to 1 BTC + 50 free spins | 60x | $6,000 | $20 | 9.3 |
| Lucky Block | 200% up to $25,000 + 50 free spins | 60x | $6,000 | $20 | 9.2 |
| Cryptorino | 100% up to 1 BTC | 66x | $6,600 | None | 9.4 |
| BetPanda | 100% up to 1 BTC | 80x | $8,000 | 0.1 uBTC | 9.2 |
| Thrill Casino | none advertised | none | nothing to clear | none stated | 8.9 |
Sports bonuses carry one term casino bonuses do not, which is a minimum price per leg. A requirement that only counts bets at −200 or shorter excludes most of the favourites you would otherwise back, and it sits in the terms rather than the headline. The full method is on wagering requirements.
Bonus figures come from industry listings unless a casino’s own terms say otherwise, and none has been verified by us.
Responsible Gambling
Every figure on this page describes a cost rather than an opportunity. A 4.55% hold means the market is priced so that staking into it loses money at that rate over enough bets, and knowing the number does not change the sign.
What the arithmetic is genuinely useful for is refusing the expensive markets. Props and parlays cost several times a main spread, and that is the decision this page can actually improve.
Free and confidential support is available from GambleAware, independently of any sportsbook.
NFL Odds FAQs
What does −110 mean in NFL betting?
You stake 110 to win 100, which is an implied probability of 52.38%. With −110 on both sides the book holds 4.55% of everything staked.
What is the vig on NFL odds?
On a standard spread the overround is 4.76% and the hold is 4.55%. Both describe the same margin against different bases, and hold is the figure that matches what the book keeps.
How do you remove the vig from a line?
Divide each side’s implied probability by the sum of both. At −110 each way that gives 50% on each side, so the fair price is +100.
Are NFL parlays worth it?
They cost several times a single bet. Four legs at standard prices hold about 17% against 4.55% on the same legs bet individually.
Why do crypto sportsbooks have different NFL odds?
They operate offshore without the local licensing that standardises pricing, so margins and lines vary more between them than between regulated books.
What win rate do you need to break even on NFL bets?
52.38% at −110. The implied probability of a price is the break-even rate, which is why the converter above reports them as the same number.
References
- NFL. schedule and results
- UK Gambling Commission. advertising rules
- GambleAware. independent support
18+ only. Gambling carries real risk of loss and the casinos covered here are offshore, which means limited recourse if something goes wrong. Free, confidential support is available at GambleAware and the SAMHSA national helpline.