What Is Vig in Betting? Juice and Vigorish Explained (With Math)

Vig in betting is the built-in margin a sportsbook charges for taking your wager. It is baked into the odds on both sides of a market, which is why a bet priced at -110 requires you to risk $110 to win $100 instead of a clean $100 for $100. Understanding vig is foundational: it is the structural reason most sports bettors lose money over time, and minimizing it is one of the few things a bettor can actually control.

What does vig mean?

Vig is short for vigorish, an old bookmaker's term for the commission charged on a wager. You will also hear it called juice, margin, or the house edge. Whatever the name, it describes the same thing: the sportsbook sets odds so that both sides of a market add up to more than 100 percent implied probability. That excess is the vig, and it means the book profits regardless of which side wins, provided the action is reasonably balanced.

Vig is not a separate fee shown on your bet slip. It is embedded directly in the odds. When you see -110 on both sides of a point spread, the math is working against you before the game even kicks off.

How is vig calculated? The -110 example

A standard point spread is priced at -110 on both sides. Here is the step-by-step calculation:

1. Convert -110 to implied probability: 110 divided by (110 + 100) = 52.38%
2. Both sides of the market at -110: 52.38% + 52.38% = 104.76%
3. Subtract 100%: 4.76% is the vig built into this market

A worked $100 example

Say two bettors each place a $110 wager on opposite sides of the same point spread:

• Bettor A wagers $110 on Team A at -110
• Bettor B wagers $110 on Team B at -110
• The book collects $220 total

When the game is decided, the book pays the winner $210 ($110 stake returned + $100 profit). The book keeps $10. That is roughly a 4.5 percent margin on the $220 wagered, and it applies regardless of which team wins. The book does not care about the outcome. It cares about collecting vig on balanced action.

What win rate do you need to beat the vig?

At -110 odds, you must win 52.38 percent of your bets just to break even. Most recreational bettors win somewhere between 45 and 50 percent of the time, meaning the vig quietly erodes their bankroll across any meaningful sample of bets.

Professional bettors typically target win rates of 53 to 55 percent on standard -110 bets. That modest edge, sustained over hundreds or thousands of wagers, produces consistent profits. For the full picture on what that looks like in practice, including why only 3 to 5 percent of bettors ever achieve long-term profitability, read our in-depth guide: Is Sports Betting Profitable?

Vig by price: a comparison table

Odds	Implied probability	Break-even win rate	Approximate vig
-105	51.22%	51.22%	2.4%
-110	52.38%	52.38%	4.5%
-115	53.49%	53.49%	6.5%
-120	54.55%	54.55%	8.7%
-130	56.52%	56.52%	12.5%

Every extra point of juice raises the break-even threshold. The difference between betting at -105 and -120 is 3.33 percentage points in the win rate you need just to stay even. Over a full season of bets, that gap compounds into a meaningful difference in outcomes. This is why line shopping matters on every single wager.

How do you remove the vig to find the fair line?

The no-vig or fair line is what the odds would be if the book charged zero margin. Here is how to calculate it for a standard two-sided market:

1. Convert both sides to implied probability. At -110/-110, each side is 52.38%.
2. Sum both implied probabilities: 52.38% + 52.38% = 104.76%
3. Divide each side by the total to normalize: 52.38 divided by 104.76 = 50%
4. The fair line is 50/50, or even money (+100 on both sides).

This tells you that a -110/-110 point spread is a coin flip priced with a 4.76 percent surcharge. The vig is your cost of participating in an even-money market.

Why parlays carry the most vig

Parlay vig compounds with every leg added. When a book combines two -110 bets into a parlay, the payout is not simply double the single-game return. The parlay is priced at odds worse than the true compound probability of both legs winning.

A 2-leg parlay at -110 per leg typically pays around +260 at most books. The true no-vig payout would be closer to +284. That gap represents about 9 to 10 percent implicit vig, on top of the vig each leg already carries. By a 3-leg parlay, the effective hold climbs to roughly 15 percent. Same-game parlays can carry holds of 20 to 35 percent. Recreational bettors who make parlays their primary bet type are paying four to seven times more vig per dollar wagered than straight bettors.

For a detailed side-by-side breakdown of parlay and teaser payouts and their respective vig implications, see our guide on teaser vs parlay bets.

How to pay less vig

You cannot eliminate vig entirely, but three habits reduce what you pay:

1. Line shop across multiple books. The same game may be priced at -105 at one licensed sportsbook and -110 at another. Always take the better number. The 1.16 percentage point difference in break-even rate between -105 and -110 is the entire margin that separates profitable bettors from losing ones in many cases. See our guide on spread vs moneyline betting for how the choice of bet type affects the price you pay.
2. Stick to straight bets. Moneyline and spread bets at standard pricing carry roughly 4.5 percent vig. Same-game parlays at the same book carry 20 to 35 percent. The bet type you choose is one of the biggest controllable factors in your long-term results.
3. Bet before sharp money moves the line. Lines often open with less vig built in and tighten as sharp money arrives. Getting the best opening number before the market adjusts is an underused form of vig reduction.

Vig, hold, and margin: are they the same thing?

They are related but measured differently:

• Vig (juice): the implied margin built into the odds on a specific bet at the time it is posted
• Hold: the percentage of total money wagered that the book actually retains after paying winners, measured across an entire event or book of business
• Margin: a general term for the book's profit percentage, often used interchangeably with hold in industry reporting

The vig on a specific bet and the hold across a book are not identical. A book can set -110/-110 (implying 4.76% vig) and realize a hold of 12 percent if bettors heavily favor one side that wins. Hold fluctuates with outcomes and action distribution. Vig is fixed at posting time.

Frequently asked questions

What is vig in sports betting?

Vig is the margin a sportsbook charges on every bet, built directly into the odds. At -110 on both sides of a point spread, each side carries an implied probability of 52.38 percent, meaning both sides sum to 104.76 percent. That extra 4.76 percent above 100 is the vig the book collects by taking action on both sides.

How do you calculate vig on a bet?

Convert each side to implied probability, add them together, then subtract 100 percent. Step by step: for a -110/-110 spread, each side is 110 divided by 210 = 52.38%. Add both: 104.76%. Subtract 100: the vig is 4.76 percent. For an asymmetric market like -150/+130, convert each: 150 divided by 250 = 60% and 100 divided by 230 = 43.48%. Total = 103.48%. Vig = 3.48 percent.

What is the standard vig at a sportsbook?

Most U.S. sportsbooks charge -110 on standard point spreads and totals, which implies a vig of 4.76 percent. Some reduced-juice books offer -105/-105, cutting the vig to about 2.4 percent. Line shopping across licensed books in your state lets you find the best prices available on any given game.

What does juice mean in betting?

Juice is a synonym for vig, or vigorish. All three terms refer to the commission built into betting odds: the reason implied probabilities on both sides of a market sum to more than 100 percent. Juice, vig, and margin mean the same thing in practice.

What is the break-even win rate at -110?

At -110 odds, the break-even win rate is 52.38 percent. You must win more than 52.38 percent of your bets over a large sample to profit. At -105, the break-even rate drops to 51.22 percent. That 1.16 percentage point gap is why bettors who consistently get the better price have a structural advantage over those who do not.

Does vig affect parlays more than straight bets?

Yes, significantly. A 3-leg parlay at -110 per leg carries an effective hold of roughly 15 percent, compared to 4.5 percent on a single straight bet. Same-game parlays can reach 20 to 35 percent. Vig compounds with each leg added, which is why straight bets give you the best mathematical chance of sustaining profit long-term.

The bottom line

Vig is the fundamental reason sports betting is hard to profit from over time. It shifts every bet's break-even threshold above 50 percent, compounds aggressively in parlay products, and means the sportsbook profits whether the favorite or underdog wins. The most effective responses are to shop for the best lines available, stick to straight bets, and track your results honestly over a large sample. For the full analysis of whether overcoming the vig is achievable in the long run, read our guide: Is Sports Betting Profitable?

For a broader look at sharp betting concepts, including how closing line value connects to vig and long-term edge, see our guide: What Is Closing Line Value in Sports Betting?

Updated July 2026.

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