How Sportsbooks Make Money – The Business of Betting | BookieBrawler

Understand how sportsbooks profit: the vig, line movement, parlays, and limiting sharp bettors. Know the system to beat it.

The Vig (Juice)

The primary way sportsbooks profit is through the <strong>vig</strong> (short for vigorish), also called the <strong>juice</strong>. This is a built-in commission on every bet.

<strong>Example:</strong> A coin flip should be +100 on both sides. Instead, sportsbooks offer -110 on both sides. If $110 is bet on each side, the book pays out $210 to the winner but collected $220 total - keeping $10 profit regardless of the outcome.

Moving Lines to Balance Action

Sportsbooks adjust odds to balance the money on both sides. When too much money lands on one side, they move the line to attract bets on the other side. This helps ensure profit regardless of the game's outcome.

Parlays and Same Game Parlays

Parlays are highly profitable for sportsbooks because the house edge compounds with each leg. Same Game Parlays are even more profitable for books since correlated outcomes reduce actual payouts. Sportsbooks heavily promote parlays through marketing for this reason.

Limiting Sharp Bettors

When sportsbooks identify winning bettors (sharps), they often limit their bet sizes or close their accounts. This protects the book's bottom line and is a controversial but common practice.