Understanding Vig (Juice): Why Sportsbooks Always Win

If you've ever wondered how sportsbooks make money, the answer is three letters: vig. Also called "juice," "vigorish," or "the take," vig is the sportsbook's built-in commission on every bet. Understanding vig is essential because it's the single biggest cost you pay as a bettor — and the main reason most bettors lose long-term.

How Vig Works

In a perfectly fair market, a 50/50 coin flip would be priced at +100 on both sides (even money). Bet $100, win $100. But sportsbooks need to make money, so instead of +100/+100, they price it at -110/-110.

At -110, you risk $110 to win $100. If two bettors take opposite sides of the same game at -110 each, the book collects $220 in total wagers and pays out $210 to the winner ($110 stake + $100 profit). The $10 difference is the vig — roughly 4.55% of the total handle.

Standard NBA vig: Most recreational sportsbooks charge -110 on both sides of a spread or total. This translates to about 4.5% vig. You need to win 52.4% of your bets at -110 just to break even.

How Vig Changes Your Break-Even Rate

The relationship between odds and break-even win rate is critical:

Every 5 cents of extra juice (from -110 to -115, for example) raises your break-even by about 1.1%. That sounds small, but professional bettors typically operate on 2-4% edges. Moving from -110 to -115 can wipe out half your edge.

Where Does Vig Hide?

Vig isn't always obvious. Here's where sportsbooks embed extra margin:

Moneyline spreads. When you see Lakers -180 / Warriors +155, there's a gap between those numbers. A fair market would be -180 / +180 or -155 / +155. That gap is additional vig beyond the standard -110/-110 on spreads.

Player props. Props often carry -115 or -120 on both sides — significantly more vig than sides and totals. Some books charge -125/-105 or even -130/-100 on props, burying the cost on the popular side.

Parlays. Each leg's vig compounds. A 4-leg parlay at -110 per leg has a theoretical house edge of about 17%, compared to 4.5% on a single bet. The books offer slightly better payouts than true mathematical odds... but still keep a massive chunk.

Same-game parlays. SGPs often carry the highest hidden vig in the book. Because the legs are correlated, the true odds should be lower than what you'd get multiplying each leg independently. Books price each leg independently and pocket the correlation discount.

How to Find Lower Vig

Line shop. Different books charge different juice on the same market. BetMetrics shows you the best line across all books — sometimes the difference is -108 vs. -112 on the same spread. Always take the lower juice.

Use Pinnacle. Pinnacle is known for the lowest margins in the industry — often 2-3% on NBA sides compared to 4.5% at DraftKings or FanDuel. If you're placing 500+ bets per year, the savings are substantial.

Watch for -105 specials. Books occasionally run reduced juice promotions (-105 instead of -110 on select games). These are genuinely good deals — jump on them when the game fits your analysis.

Bet early. Opening lines sometimes have more favorable juice because books are still gauging where the money will flow. By game day, the juice has often been tightened.

The Real Cost of Vig Over Time

Let's do the math on a season of NBA betting:

• •500 bets at $100 each at -110: You need 262 wins (52.4%) to break even.
• •At -105: You only need 256 wins (51.2%).
• •That 6-win difference is worth $600 over the season — pure savings from better juice.

A bettor who wins 54% of their bets at -110 profits about $1,600 per season. The same bettor at -105 profits $2,800. Same skill, 75% more profit, just from finding better prices.

The Bottom Line

Vig is the toll you pay to play. You can't eliminate it, but you can minimize it. Line shopping, using low-margin books, and avoiding high-vig products like SGPs and exotic props will save you more money over a season than any single betting tip or strategy. On BetMetrics, we make line shopping instant — so you never pay more vig than you have to.