How Does a Sportsbook Make Money?

A sportsbook is a gambling establishment that accepts wagers on different sporting events. It may be a website, company, or even a brick-and-mortar building. It accepts bets from both professional and casual bettors, and offers a variety of betting options, including live betting. It is also possible to bet on the outcomes of eSports matches.

How does a sportsbook make money? While it isn’t exactly a secret, understanding how sportsbooks operate can help you place better bets. The main source of profit for a sportsbook is the margin, which is calculated as the difference between a team’s expected win percentage and its opponent’s. Sportsbooks calculate their margins by adding up the bets placed on each side of an event. This is how they guarantee a return, regardless of the outcome of the game.

As such, most sportsbooks try to keep their margin as close to 10% as possible. To accomplish this, they move their lines from time to time to encourage bettors to take one side of the line or another. They also move lines based on new information, such as injury or lineup news.

The most common type of bet is a straight bet. This is where you place a bet on a team or individual to win a specific event. For example, if you believe that the Toronto Raptors will defeat Boston Celtics, you can make a straight bet on the NBA matchup. Aside from straight bets, there are also point spreads and totals bets.