Prediction Markets
in California

⚠ Platform availability changes frequently. The DFPI's aggressive track record with novel financial products means California is a higher-risk state for non-CFTC platforms. Always verify directly before depositing. Last verified: May 2026.

The DFPI: America's most active fintech regulator

The California Department of Financial Protection and Innovation (DFPI) is widely regarded as the most active state-level fintech regulator in the US. It has issued cease-and-desist orders and pursued enforcement against cryptocurrency exchanges, lending platforms, and novel financial products that it deems operate under California law without proper licensing.

Prediction markets sit in a regulatory gray zone between financial derivatives (CFTC's domain) and gambling (California Gambling Control Commission's domain). CFTC-regulated platforms like Kalshi argue federal preemption: as a federally licensed exchange, state gambling law cannot apply. The October 2024 federal court injunction in Kalshi's favor strengthened this argument.

As of May 2026, the DFPI has not filed enforcement action against any prediction market operator. However, other state AGs (Wisconsin in May 2026, followed by New York and Illinois executive orders) have moved against the sector. California's Governor Newsom has not followed, but the DFPI acts somewhat independently of the Governor's office.

CFTC federal preemption: California's trump card

Kalshi holds a CFTC DCM licence. Under the Commodity Exchange Act, federal derivatives regulation preempts state law for activities within the CFTC's jurisdiction. This means California gambling law and California money transmission law arguably do not apply to Kalshi's operations for California residents. The October 2024 federal injunction explicitly supported this preemption argument.

California taxes event contract profits as ordinary income at state rates up to 13.3%: the highest state income tax rate in the country. Combined with the federal 37% top bracket, high-income California residents can face a combined marginal tax rate above 50% on prediction market profits.

At the federal level, platforms like Kalshi issue annual 1099-MISC forms. You can deduct up to $3,000 of net losses per year, with the remainder carried forward. California conforms to most federal income tax treatment for this type of income.

California's mental health services tax (1% surcharge on income over $1M) may also apply to prediction market profits at high income levels, bringing the effective top rate to 14.3% state + 37% federal.