What's the difference between hold and vig?

Vig is the theoretical margin priced into the odds before a game starts, calculable from a single line (roughly 4.5% on a standard -110 bet). Hold is the actual percentage of total handle a sportsbook kept after real bets from a given period settled — the realized result, which often differs from the theoretical vig because outcomes rarely split exactly as predicted.

How is sportsbook hold calculated?

Hold % = (Handle − Payouts) ÷ Handle × 100. If $100,000 is wagered on a market and $95,000 gets paid out to winners, the hold is 5% — the percentage of total money wagered that the sportsbook actually kept.

Why do parlays have such a higher hold than straight bets?

Reported state data shows parlay hold routinely running 18-24%+ against roughly 4.5-5% on straight bets, and same-game parlays specifically often run 20-35% — a structural edge for the book 4 to 8 times larger than a straight bet concedes, which is a real, measured outcome, not just theoretical odds math.

Sportsbook hold vs vig explained (theoretical margin vs what the book actually kept)

Last updated: 2026-07-29 · Written by Elena Kovač

Vig is the margin priced into the odds themselves, calculable before a single bet settles — a standard -110 line on both sides implies about 4.5% built-in edge, regardless of what actually happens in the game. Hold is a different number entirely: the percentage of total money wagered (handle) that a sportsbook actually kept after every bet from a given period has been paid out. Vig is a prediction of the edge; hold is what really happened.

How hold is actually calculated

The straightforward version of the formula is Hold % = (Handle − Payouts) ÷ Handle × 100. If $100,000 gets wagered on a market and the sportsbook pays out $95,000 to winners, hold works out to 5% — money kept divided by money taken in. This can also be approximated from the odds themselves before results are known: two sides both priced at -110 imply roughly 52.4% each, summing to about 104.8%, with the extra 4.8% over 100% representing the theoretical edge — close to, but not identical to, the vig number quoted from a single line.

Why hold and vig routinely disagree

Vig is a fixed, calculable number baked into a specific line before the game starts. Hold is whatever percentage of handle actually stayed with the book after real outcomes settled every bet in a given period, and because game results rarely split exactly the way the odds implied, hold and vig routinely diverge — sometimes sharply. If results heavily favor the side the public bet, a sportsbook can post a hold well below its priced-in vig, or even a negative hold, on that specific market or day; if the public loses heavily, hold can run well above the theoretical number. Vig is expected; hold is realized, and only shows its true value once bets actually settle.

Why parlays show a hold far above any single straight bet's vig

This gap is where the difference between vig and hold becomes genuinely useful to understand rather than just academic. A single straight bet at -110 carries roughly 4.5% vig, and the long-run industry hold on straight bets sits close to that, around 5%. Parlays are a completely different story: New Jersey's sportsbooks posted an average parlay hold of 24.2% in one reported month against 4.4% on everything else combined, and Illinois data from 2023 showed an 18.2% parlay hold versus 4.9% on straight bets — same-game parlays specifically often run a 20-35% hold, meaning a bettor sticking exclusively to parlays is giving the book 4-8 times the structural edge a straight-bet bettor concedes.

Why this distinction is worth tracking, not just knowing

Vig tells you the theoretical cost of a specific bet type before you place it — useful for comparing a -110 line against a -105 reduced-juice line, as covered in bookmaker margin explained. Hold tells you what actually happened to real money over a real period, which is the number that shows up in state gaming reports and reveals which bet formats genuinely cost bettors the most in practice — the parlay-vs-straight gap being the clearest example, since it's built from real settled handle rather than a single line's implied math.

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FAQ

What's the difference between hold and vig? Vig is the theoretical margin priced into the odds before a game starts, calculable from a single line (roughly 4.5% on a standard -110 bet). Hold is the actual percentage of total handle a sportsbook kept after real bets from a given period settled — the realized result, which often differs from the theoretical vig because outcomes rarely split exactly as predicted.
How is sportsbook hold calculated? Hold % = (Handle − Payouts) ÷ Handle × 100. If $100,000 is wagered on a market and $95,000 gets paid out to winners, the hold is 5% — the percentage of total money wagered that the sportsbook actually kept.
Why do parlays have such a higher hold than straight bets? Reported state data shows parlay hold routinely running 18-24%+ against roughly 4.5-5% on straight bets, and same-game parlays specifically often run 20-35% — a structural edge for the book 4 to 8 times larger than a straight bet concedes, which is a real, measured outcome, not just theoretical odds math.

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