Every sportsbook line is two prices in a trench coat. There is the price you see, and underneath it there is a tax — the vig — that the book bakes in to guarantee a profit no matter which side wins. Understanding vig, juice, and hold is the single most-skipped step in becoming a better bettor, because it tells you what you are actually being charged, and which markets are worth your money. This guide walks through what those words mean, how to convert them, and how to use them to find soft books and sharp lines.
Vig, juice, and hold — what each word means
The terms are often used interchangeably, but they are not quite the same thing.
- Vig (or vigorish): the markup the book charges on a bet, typically expressed as part of the odds. The standard "-110 both sides" line carries about 4.5 percent vig.
- Juice: a colloquial term, almost always synonymous with vig. "The juice on this side is bad" means the price is worse than -110.
- Hold: the book's expected profit margin on a market, expressed as a percentage of total handle. A two-way market priced -110/-110 has a hold of about 4.55 percent.
Think of it this way: vig is the price tag on a single side. Hold is the book's overall cut once you sum both sides.
How to calculate hold in 30 seconds
Convert each side of the line to its implied probability, add them up, and the amount over 100 percent is the book's hold.
Implied probability formula (American odds):
- Negative odds: probability = -odds / (-odds + 100)
- Positive odds: probability = 100 / (odds + 100)
Example: a game listed as Eagles -120 / Cowboys +100, with Jalen Hurts and the Philadelphia offense drawing the public side.
- Eagles -120: 120 / 220 = 54.5 percent
- Cowboys +100: 100 / 200 = 50.0 percent
- Sum: 104.5 percent
- Hold: 4.5 percent
That extra 4.5 percent does not exist in the real world. There is no scenario where the Eagles win 54.5 percent of the time AND the Cowboys win 50 percent of the time. The book has padded each side to guarantee profit, and the hold is the size of the pad.
Why -110 is the most quoted number in betting
The classic spread or total at -110 on both sides is almost an industry default. It corresponds to a hold of:
110/210 + 110/210 = 0.5238 + 0.5238 = 104.76 percent → 4.76 percent hold
To break even at -110, you need to win 52.38 percent of your bets. That is the famous "break-even" number that gets quoted everywhere. The five-percent bump from a true 50/50 toss-up is the vig at work. That same threshold is why ATS cover rate matters so much in against-the-spread betting.
Hold across markets — not all bets are equal
Different markets carry wildly different holds:
- NFL/NBA spreads and totals: 4.5 to 5 percent
- Moneylines (favorites): 2 to 4 percent
- Player props: 6 to 8 percent on most lines, sometimes higher on goalies/QB props or star markets like Justin Jefferson receiving yards and Josh Allen rushing touchdowns
- Same-game parlays: 15 to 25 percent or more, depending on legs
- Futures (Super Bowl, MVP): 20 percent and up
- Live betting markets: often 7 to 10 percent during fast-moving spots
The implication is clear: a bettor who plays only spreads and totals is paying roughly half the tax of a bettor who plays mostly parlays and futures. Choosing which markets to play is a form of edge by itself. We dig into the parlay tax in our SGP math guide.
Why low-vig books matter
If you bet -110 your whole life, you need to hit 52.38 percent. If you can find -105 (some "reduced juice" books offer this), you only need 51.22 percent — more than a full point lower. Over 1,000 bets, that's the difference between profit and break-even for a lot of grinders.
Two practical points:
- Line shop every bet. The same game might be -110 at one book and -105 at another. Taking the better price is free EV.
- Track closing line value (CLV). Beating the close is the proof of edge. Beating the close at low-vig books is real money; the workflow is in the CLV guide.
You can compare current lines and see closing-line tracking on the NFL picks and NBA picks dashboards, and pull devigged probabilities from any tracked model on the model leaderboards.
Devigging: what the line "really" thinks
Once you know the hold, you can strip it out to back into the book's true probability estimate. This is called devigging.
Take the Eagles -120 / Cowboys +100 example:
- Eagles raw probability: 54.5%
- Cowboys raw probability: 50.0%
- Total: 104.5%
- Devigged Eagles: 54.5 / 104.5 = 52.2%
- Devigged Cowboys: 50.0 / 104.5 = 47.8%
The book "really" has the Eagles at about 52 percent. If your model has them at 56 percent, you have a 4-point edge — and now you can size the bet appropriately. Devigging is built into every model output you build in the lab, but doing it by hand once or twice locks in the intuition.
Worked example: line shopping the 2026 Week 8 NFL slate
Concrete walk-through. Sunday morning, Bills at Dolphins. You see this pricing across four books:
- Book A (DraftKings): Bills -3.5 (-115) / Dolphins +3.5 (-105) — hold 4.55%
- Book B (FanDuel): Bills -3.5 (-110) / Dolphins +3.5 (-110) — hold 4.76%
- Book C (Circa): Bills -3.5 (-108) / Dolphins +3.5 (-104) — hold 2.85%
- Book D (offshore): Bills -3 (-115) / Dolphins +3 (-115) — hold 4.65%, plus the better number for the dog
If you want Buffalo, the best price is Book A at -115. If you want Miami, Book C at -104 is by far the lowest juice. Book D gives Dolphins +3 (worse number than +3.5) at -115 (worse price). Book D loses on both dimensions. Sharp bettors maintain accounts at 3-4 books specifically to capture this kind of pricing asymmetry, and they treat each bet as a procurement problem first and a handicapping problem second.
Calculating EV gain from line shopping
Take the Dolphins side. At Book B (+3.5 / -110), implied probability is 52.4%. At Book C (+3.5 / -104), implied probability is 50.98%. The half-percent gap on implied probability translates to roughly 0.5-1% expected value per bet if your model says the true probability is 53%. Over 500 bets at $50 each ($25,000 handle), that is $125-250 of free money for the same wager. Line shopping is not glamorous, but it adds more EV than most bettors capture from "edges" they imagine they have.
Vig in non-traditional markets
The standard math breaks down on three product types that have exploded since the 2024 sportsbook expansion:
Parimutuel pickem (PrizePicks, DraftKings Pick 6)
Pickem products do not list odds on individual props. The "hold" is encoded in the payout schedule. A PrizePicks 4-pick power play at 10x has an implied break-even probability of (1/10)^(1/4) = 56.2% per leg, vs the 50% you would expect on a true line. The gap (6.2 points per leg) is the hold. Across 4 legs that compounds to about a 35% house edge — vastly worse than a sportsbook parlay. The pickem desk calculates this per slate so you can see the implied hold before clicking submit.
Kalshi event contracts
Event contract platforms like Kalshi price contracts as cents-to-the-dollar (a 60-cent Yes contract pays $1 if the event happens). The "hold" is the bid-ask spread plus a small platform fee, usually 1-3% total — far lower than book hold. The catch: liquidity is limited on most contracts, so a single $5,000 bet can move the price 2-3 cents against you, recapturing some of the vig advantage in slippage.
Live betting markets
Live (in-play) lines run 7-10% hold during fast-moving game states (red-zone third downs, late timeouts) and 4-6% during stoppages. The book widens spreads to compensate for the latency between true state and the displayed price. If you bet live, do it during dead time — between possessions, during timeouts, at halftime. Not during a coach's challenge or two-minute warning.
Hold red flags
Some markets advertise themselves as bettor-friendly while quietly running 10+ percent hold:
- Stat-leader props. "Most receiving yards in the game" markets often carry 12 to 15 percent hold.
- Long-tail futures. Sub-1 percent contenders priced at +50000 are book gold.
- Boosted parlays. The "boost" usually closes a piece of a 25 percent hold to a 20 percent hold. Still bad.
If you cannot calculate the hold from the listed prices, the answer is almost always: it is high.
Three-way and multi-outcome markets
Soccer moneylines, NFL touchdown scorer markets, and any market with more than two outcomes use the same hold math, just with more terms. Sum all outcomes' implied probabilities; the amount over 100 percent is the hold. A typical EPL three-way moneyline (home / draw / away) runs 5 to 8 percent hold — meaningfully higher than the NFL two-way 4.5 percent. First-touchdown-scorer markets in the NFL often sum to 130 percent or more because the book lists 20+ candidates and each carries its own padding. The arithmetic stays simple even when the markets get wide.
The lesson: the more outcomes a market lists, the harder it is for any individual price to be sharp, and the easier it is for hidden hold to accumulate. Devigging a 30-outcome market by hand is tedious but worth it once a season to anchor intuition.
How hold changes during the betting cycle
The hold you see at line release is not the hold you see at kickoff. Books open markets at higher hold (often 5 to 7 percent on NFL spreads) to discourage early action while the line gets shaped by sharp money. As volume grows, the hold compresses — sharp books like Pinnacle and Circa often close at 2 to 3 percent on major NFL sides. Soft books typically keep hold above 4.5 percent through close because their retail audience does not line-shop.
Two practical implications:
- Avoid early hold tax. If you are not the one shaping the line with sharp opinion, betting at opening hold is paying extra for no edge.
- Live markets reprice constantly. Live hold often spikes during fast-moving sequences (red zone, basketball timeouts) when the algorithm widens spreads to manage risk. Bet live during slow stretches, not the moments the market is widest.
Building hold awareness into a betting workflow
A useful weekly habit: pick three games across your sport. For each, compute the hold across two or three books and the closing-line hold at a sharp book. Track that in a sheet alongside whether you wagered and what side. After a month, the data tells you which books to trust on price and which to skip. The cards and snippets surfaced on the marketplace often include devigging math in the description, which is a fast way to learn what a clean hold computation looks like in practice. The leaderboards show how published models perform after hold is stripped out — the only fair benchmark for comparing edges.
Hold across tournament and contest formats
DFS contests and prediction-market tournaments price hold differently. Daily fantasy contests typically take a rake of 8 to 14 percent of total entry fees on top of payout structure — that is the effective hold. Peer-to-peer markets often run 1 to 3 percent. Bracket-style pools like those run via the gridiron tournament page are typically rake-free but pay only the top X percent of entrants, which functions as an implicit hold against bottom-half players. Knowing the rake is part of knowing whether the contest is worth entering.
Bottom line
Vig is the fee. Juice is the slang for that fee. Hold is the book's expected take across the whole market. The difference between a good market and a bad one is mostly hold. Bet spreads and totals at low-vig books, line-shop every play, devig prices to find true probabilities, and avoid futures and SGPs unless you have a specific edge.
The bettors who win long-term do not just pick winners — they pick markets where the tax is small enough to leave room for an edge to survive. Start by tracking holds across your top three books for a week. The variation will surprise you. Then pair the habit with disciplined bankroll sizing, log every bet using the tracking template, and validate that low-vig wagers actually translate into measured edge via closing line value.
Bet responsibly — set limits, never chase losses.
Price examples and pass rules
Use names as evidence, not decoration. The useful SEO win is that Josh Allen, Jalen Hurts, Justin Jefferson, Ja'Marr Chase and Bijan Robinson and Bills, Eagles, Dolphins, Cowboys and Chiefs appear inside decisions, thresholds, and internal links instead of being dumped into a keyword list.
- Spread example: if Chiefs-Broncos opens Chiefs -3.5 and your fair number is -2.8, +3.5 is the bet, +3 is a pass, and the moneyline needs roughly +155 or better before it replaces the spread.
- Total example: if a Bills outdoor total opens 46.5 and wind moves from 8 mph to 21 mph, an under projection at 42.8 still needs a playable number; under 45 or better is different from chasing 43.5.
- Futures example: Bengals AFC North +280 is 26.3% before hold. If your fair number is 30%, stake modestly, track portfolio correlation, and avoid stacking every Burrow, Chase, and Higgins bet into the same thesis.
- CLV rule: a good write-up is not enough. Track whether the spread, total, prop, or futures price closed better than your entry before grading the process.
Use closing-line value guide, vig and hold guide, bet tracking workflow to keep the examples attached to measurable prices.
Research note board
Use this table to turn the guide into a decision note. The point is to know when the idea is actionable and when it is only context.
| Angle | Input to verify | Example application | Pass when |
|---|---|---|---|
| Market price | Spread, total, moneyline, prop price, or futures hold | Bills and Eagles compared through PPR | The price has moved past the number that created the edge |
| Football or sport context | Role, pace, weather, injury status, opponent style | Josh Allen role news mapped to the relevant market | The original input changes or remains unconfirmed |
| Review loop | Entry, close, result, and reason code | closing line value logged with a clear thesis | You cannot explain whether the process beat the market |
Implied probability vs no-vig fair line
Sportsbook-implied win probability vs the no-vig fair-line probability at common American odds. The vig column is the cost you pay above fair — at -110/-110 that is ~2.4 points of implied probability per side.
Breakeven win % at common American odds
The win rate you need to break even at each price. Pick odds shorter than -150 and you must win >60% just to stay flat — a hurdle most casual handicappers never sustain.
