Totals Betting Basics: Rules, Terms, and How the Line Is Set

An over under bet — also called a totals bet — is a wager on the combined final score of both teams. You don't pick a winner. You pick whether the score goes Over or Under a number the sportsbook sets. If you're new to totals, start with What Is an Over Under Bet? Totals Explained for Beginners before diving into the mechanics below.

How Does a Sportsbook Set the Total Line?

Oddsmakers open a total based on expected scoring — factoring in team offense and defense, pace of play, weather (outdoor sports), and starting lineups. The goal is to attract equal action on both sides, not to predict the exact score.

Once posted, the line can move. Sharp bettors placing large wagers push the number up or down before game time. For a deeper look at that process, see Line Movement on Totals: How Sharp Bets Shift the Over Under Number.

What Are the Standard Rules for an Over Under Bet?

• Both sides price at -110 by default. A $110 wager returns $100 profit; a $100 bet at -110 returns a total of $190.91.
• Overtime counts. Most sportsbooks include any overtime scoring in the final total. See Does Overtime Count for Over Under Bets? for the exceptions worth knowing.
• A push refunds your stake. If the combined score lands exactly on a whole-number total, neither side wins. The book returns your wager in full.
• A hook eliminates pushes. Many lines are set at a half-point (e.g., 47.5) to force a winner every time.

The push and hook rules trip up new bettors more than anything else. The full breakdown is at Push and Hook: What Happens When the Score Lands on the Number.

What Is the Vig and Why Does It Matter?

The -110 price on each side is the sportsbook's commission, called the vig or juice. At -110/-110, the book's built-in margin is approximately 4.76%. That means a bettor must win more than 52.38% of wagers just to break even — not 50%. Some books offer reduced juice totals at -105 per side, cutting that hold roughly in half.

For a full explanation of how the -110 price affects what you actually take home, read Over Under Odds and Payouts: How -110 Juice Works.

Key Totals Terms at a Glance

Total / O/U

The combined score both teams must beat (Over) or stay below (Under).

Push

Combined final score equals the posted whole-number total; stakes are refunded.

Hook

A half-point (.5) added to eliminate push possibilities.

Vig / Juice

The sportsbook's built-in commission; standard is -110 per side.

Line Movement

A change in the posted total driven by sharp money, injuries, or weather before tip-off or kickoff.

Every term above — plus implied probability, EV, and overround — is defined in the Over Under Betting Glossary: Vig, Push, Hook, EV, and More.

Where Can You Place an Over Under Bet Legally?

As of 2026, approximately 39 states plus DC have legalized sports betting in some form, with roughly 32 permitting statewide online and mobile wagering. DraftKings and FanDuel together hold roughly 70% of US online handle and are licensed in the majority of legal states. Other major licensed operators include BetMGM, Caesars Sportsbook, ESPN BET, and bet365.

California and Texas remain among the states where online sports betting is not legal. For a current state-by-state breakdown, see Where Is Over Under Betting Legal? State-by-State Status in 2026. Must be 21+ in most states (18+ in a few). Gambling problem? Call 1-800-GAMBLER.