California Sports Betting Is Illegal Under Penal Code 337a

California has never authorized sports wagering in any form, not at tribal casinos, not at licensed cardrooms, not online, and not through the state lottery. The governing statute is Penal Code section 337a, in the Gaming chapter of the Penal Code. Subdivision (a) lists ways to violate it: pool selling or bookmaking 'with or without writing, at any time or place'; keeping any room, building, vessel, or stand equipped with apparatus for recording bets; receiving or forwarding money meant as a wager; and recording or registering any bet or wager 'upon the result...of any trial...or contest...of skill, speed or power of endurance of person or animal.' That last clause is the one that reaches sports wagering directly, a game's outcome is a 'contest...of skill' under the statute, and the law criminalizes both sides of the transaction: the person taking the bet and the person placing it.

First-offense penalties run up to a year in county jail or a term in state prison, plus a fine up to $5,000. A second conviction adds a mandatory fine of $1,000 to $10,000 on top of jail time, and the offense is 'priorable,' meaning penalties escalate further on a third conviction. Section 336.9 carves out a narrow exception for casual wagers placed directly among the bettors themselves, nothing 'for gain, hire, or reward other than that at stake,' no bookmaker taking a cut, but that exception explicitly excludes any bet made online and caps the pool at $2,500; violating it is only an infraction (up to $250), while an actual sportsbook stays a section 337a crime.

Voters had two chances to legalize sports betting and rejected both by landslide margins in November 2022: Proposition 27, which would have allowed online and mobile wagering, failed 82.3% to 17.7%; Proposition 26, covering in-person wagering at tribal casinos and licensed racetracks, failed 67% to 33%, after roughly $450 million in combined campaign spending. No agency licenses or regulates sports wagers in California because none is legally permitted to operate.

A first conviction under Penal Code section 337a is a wobbler: up to one year in county jail, or a term in state prison, plus a fine up to $5,000, with courts able to impose both. A second conviction adds a mandatory fine between $1,000 and $10,000 on top of custody time, and penalties escalate further for a third offense since it is a priorable crime. Both sides of an illegal bet are chargeable, placing a wager with an unlicensed sportsbook is prosecuted the same as running one.