California Prediction Markets: Best Sites & Legal Platforms in 2026

Are prediction markets legal in California?

Yes, prediction market apps are currently legal in California, even though the state does not allow traditional sports betting. These platforms operate under a different legal framework and are federally regulated by the Commodity Futures Trading Commission rather than by state gambling authorities. Instead of betting against a sportsbook, users trade predictions against other participants on an exchange-style market.

However, the regulatory outlook could change as the debate over California sports betting continues. The California Department of Justice has said it is monitoring legal challenges in several states, and outcomes could influence future regulation. Tribal groups, such as the California Nations Indian Gaming Association, have also urged regulators to restrict prediction markets, arguing that they bypass the Indian Gaming Regulatory Act, though their legal efforts have not succeeded so far.

California prediction market apps reviewed

Since California prediction markets can operate legally, there isn’t any shortage of options for sports fans in the Golden State, complete with prediction market promos. Check out our favorite CA prediction markets below: 

• Kalshi - Best California prediction app
• Polymarket- Best for trending predictions
• Underdog - Best for pick-em style
• OG.com - Best margin trading
• Crypto.com - Best crypto prediction app
• FanDuel Predicts- Best for beginners

My expert analysis

Kalshi was the first prediction market platform to let Californians buy and sell event contracts, and it remains one of the most popular. The CFTC-regulated platform provides a decent $10 welcome bonus, accepts minimum deposits of just $1 using either fiat or crypto, and offers a wide range of markets on sports, politics, culture, and more. It’s a wondeful platform to join if you’re just getting your feet wet with trading event contracts.

Kalshi at a glance

	Kalshi
Kalshi sign-up bonus	$10 Trading Bonus
Kalshi promo code	COVERS
Top feature	Legal sports trading
Minimum deposit	$1
Eligible states	All states + DC (excluding Nevada)
Legal age	18+
Kalshi mobile app	iOS & Android
Offer expiry	Ongoing

Read more in our comprehensive Kalshi review to learn about one of the top prediction market apps of 2026 and the Kalshi promo code 'COVERS'.

My expert analysis

Polymarket has entered the U.S. market, and users can get access with the invite code 'COVERS' to try the top California prediction market app of 2026. More crypto-centric than Kalshi, the platform supports a wide range of cryptocurrencies (with the option to purchase crypto on-site using fiat) and features extensive markets focused on trending stories, breaking news, crypto developments, and major events through simple “Yes” or “No” contracts — making it appealing to both data-driven traders and traditional sports bettors.

Polymarket at a glance

	Polymarket
Polymarket sign-up bonus	Deposit $10, Get $20 Trading Bonus
Polymarket promo code	Invite code: COVERS
Top feature	Trade real-world events instantly
Minimum deposit	As little as $10
Eligible states	All 50 states + DC
Legal age	18+
Polymarket mobile app	iOS & Android
Offer expiry	Ongoing

Explore our in-depth Polymarket promo code page for everything you need to know about this impactful operator. We also have a full Polymarket review, or our Polymarket vs. Kalshi guide page, to help you see which prediction site is the perfect fit for you in 2026.

My expert analysis

Underdog is a prediction-focused platform built for sports fans who enjoy player-based “pick’em” style markets. Users make simple yes/no or over/under predictions on player stats, game outcomes, or prop bets, often in a fantasy-style format. What sets Underdog apart from platforms like Kalshi and Polymarket is its casual, gamified approach: instead of complex event contracts or crypto-centric trading,

Underdog emphasizes easy-to-understand, fast-turnover predictions that appeal to everyday sports fans rather than professional traders. Its focus on accessibility, short-term engagement, and player props makes it uniquely suited for casual, daily sports interaction.

Underdog at a glance

	Underdog
Underdog sign-up bonus	Play $5, Get $50 in Bonus Entries (DFS only)
Underdog promo code	COVERS
Top feature	Legal sports trading
Minimum deposit	$5
Eligible states	AK, AL, AR, AZ, CA, CO, FL, GA, IL, IN, KS, KY, MA, MI, MN, MO, MS, NC, ND, NE, NH, NJ, NM, NY, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VA, VT, WI, WV, WY
Legal age	18+ (19+ in AL + NE, 21+ in AZ + MA)
Underdog mobile app	iOS & Android
Offer expiry	Ongoing

Dig into all the key features and promotions associated with the Underdog promo code 'COVERS'.

Must be 18+ (19+ in AL, NE; 19+ in CO for some games; 21+ in AZ, MA, and VA) and present in a state where Underdog Fantasy operates. Terms apply. Concerned with your play? Call 1-800-MY-RESET or 1-800-GAMBLER or visit www.ncpgambling.org. NY: Call the 24/7 HOPEline at 1-877-8-HOPENY or Text HOPENY (467369)

My expert analysis

OG.com, which was launched by Crypto.com in 2026, is a prediction market platform where users can bet on real-world events across sports, politics, culture, and finance. The platform offers binary “yes” or “no” contracts, allowing traders to predict event outcomes. These contracts range from $0.01 to $1.00. Correct predictions settle at $1.00, while incorrect ones settle at $0.00.

OG.com offers sign-up bonuses, unrestricted binary contract trading, social features like leaderboards, and the ability to create parlays. It plans to introduce margin contracts and leverage Crypto.com partnerships for exclusive perks. With a strong leadership team, I'm expecting a bright future for OG.com.

OG.com at a glance

	OG.com
OG.com sign-up bonus	Up to $100 in Bonuses
OG.com referral code	Applies automatically
Top feature	Margin trading
Minimum deposit	$10
Eligible states	All states except NY and AZ (users in IL, MA, MD, MI, NJ, NV, and OH are also not permitted to trade sports contracts)
Legal age	18+
OG.com mobile app	iOS & Android
Offer expiry	Dec. 31, 2026

Read our OG.com promo code page for an in-depth look at one of the industry's best and newest prediction market bonuses. 

My expert analysis

Crypto.com has a smaller selection of markets than the other platforms, and is primarily focused on sports-related contracts for now. As the name suggests, the platform is crypto-focused and allows you to trade and store hundreds of crypto coins in your account. Crypto.com is a good choice if you are a keen crypto user or interested in that world, but you also want to try your hand at some sports predictions. 

Crypto.com offers the top welcome bonus among the prediction market platforms listed here. It offers up to $50 in new plate credits and lets you claim up to 1 BTC in CRO tokens when you meet certain trading milestones in your first month on the platform. 

Crypto.com at a glance

	Crypto.com
Crypto.com sign-up bonus	$50 Bonus
Crypto.com referral code	Applies automatically
Top feature	Legal sports trading
Minimum deposit	$10
Eligible states	Most states + DC
Legal age	18+
Crypto.com mobile app	iOS & Android
Offer expiry	Ongoing

Learn more in our Crypto.com review and all about the Crypto referral code offer.

My expert analysis

FanDuel Predicts is one of the newest prediction market platforms, but it has already made its mark in California. It offers a standalone app separate from its online sportsbook and casino apps. It also gives you access to all of its biggest markets, including sports, economics, finance, and commodities.

It’s one of the few prediction market platforms that operates seamlessly in all 50 states, and it will be perfect if you’re searching for a platform with an easy-to-navigate app. Existing FanDuel users will appreciate its familiar design, too. 

FanDuel Predicts at a glance

	FanDuel Predicts
FanDuel Predicts sign-up bonus	Coming Soon
FanDuel Predicts promo code	Applies automatically
Top feature	Fully integrated platform
Minimum deposit	$5
Eligible states	All 50 states plus D.C. (sports trading available in 18 states)
Legal age	18+ (19 or 21 in some)
FanDuel Predicts mobile app	iOS & Android
Offer expiry	N/A

Learn more in our in-depth FanDuel Predicts promo code page.

How to trade prediction markets in California

No matter which California prediction markets you choose to sign up for, you will be pleasantly surprised to see how simple it is. These platforms have simplified the process for beginners, so you don’t need any special expertise to start trading. 

Here’s our step-by-step guide to help you:

Upcoming sports events to trade on

Prediction markets vs. sports betting in California

Although prediction markets and traditional sports betting share similarities, they operate under different models — particularly in how markets function, how prices are set, and how platforms generate revenue.

🤝 Market structure: peer-to-peer vs. the house

Prediction markets are peer-to-peer platforms where users trade event contracts directly with each other. When you take a position on an outcome, another participant is typically taking the opposite side. The platform simply facilitates the market and does not set prices or probabilities.

Sports betting works differently. When you place a wager at a sportsbook, you are betting against the operator (the “house”). The operator sets the odds, complete with California sportsbook promos, and can adjust them as needed to balance betting action and protect profitability.

📊 How pricing and odds are determined

In prediction markets, contract prices are determined entirely by supply and demand. As users buy and sell positions, prices shift to reflect the market’s collective belief about the likelihood of an event.

Sportsbooks set their own odds using internal models and traders. While lines may move based on betting activity, the operator ultimately controls the pricing.

💰 How platforms make money

Prediction market platforms typically earn revenue through small transaction fees whenever users buy or sell contracts. Sportsbooks profit by including a margin — known as the “vig” — in their odds, which helps ensure they make money regardless of the outcome.

🔄 Trading flexibility and legality

Prediction markets operate more like exchanges, allowing users to buy and sell contracts both before and during events as prices change. This means positions can be closed early if desired. Sports bets are usually placed with the intention of waiting for the final result, though some sportsbooks offer early cash-outs at a premium.

Another key difference is legality. Trading event contracts is currently permitted in California, while traditional sports betting remains illegal. Even so, prediction markets still cover familiar sports outcomes, such as the Super Bowl winner or the top scorer in the FIFA World Cup.

What prediction markets can Californians trade?

Californians can trade event contracts on prediction market platforms for all kinds of things. There is significant overlap among the major platforms, but some have their own niche markets, too. Here’s what you can expect:

🏈 Sports prediction markets

Sports prediction markets are very popular. Since legal sports betting still isn’t available in California, platforms attempt to fill the void by allowing you to buy and sell contracts for sports events.

Although less detailed, sports prediction markets cover many of the same topics as sportsbook betting lines, including moneylines, point spreads, totals, and props. 

For example, a typical market might ask you to answer the question, “Will the Los Angeles Lakers beat the Los Angeles Clippers?” The Lakers have been a significantly better team than the Clippers throughout the 2025-26 NBA season, so the price for “yes” will likely be lower than the price for “no.” This shows that “no” is the more probable outcome.

Best platform for sports predictions

FanDuel Predicts is our top recommended platform for sports fans in California. It does a great job of simplifying the trading process for beginners, and its mobile app is among the best. It also has the same general design as the FanDuel sportsbook, which brings a nice sense of familiarity. 

Christian Stringer Betting Editor

🗳️ Political and election markets

Political and election markets are very popular, especially now that stories have emerged about users earning hundreds of thousands of dollars by trading contracts on the fate of Venezuelan President Nicolás Maduro and similar events. 

Event contracts related to elections are also on the rise and could peak ahead of the midterm elections later this year. You can buy and sell contracts depending on which political candidates you think will win their elections.

Best platform for political predictions 

Polymarket is the leading platform for ultra-up-to-date markets about the latest events in politics and geopolitics. They are prominently advertised in the “Trending” and “Breaking” sections of the site.

Christian Stringer Betting Editor

📊 Economic indicator markets

All the media attention the U.S. political scene receives these days has led to major interest in key economic indicators, such as gross domestic product (GDP), Federal Reserve interest rates, and the unemployment rate. Many California prediction markets deal directly with the numbers associated with these economic indicators, and you can buy or sell contracts related to where they will land by specific dates.

Best platform for economic predictions

Kalshi has a detailed Economics section covering everything from “Oil and Energy” to “Housing” and Growth”.

Christian Stringer Betting Editor

🪙 Cryptocurrency price predictions

California has more cryptocurrency owners than any other state, making cryptocurrency-related contracts on prediction market platforms very popular. Most commonly, you can buy and sell contracts that call for you to accurately predict whether the prices of Bitcoin, Ethereum, and other types of crypto will surpass a set number before a certain date.

Best platform for crypto predictions 

Polymarket has the most markets covering all things crypto. If you’re looking for a one-stop platform for crypto trading and banking in general, along with sports prediction markets, Crypto.com is the one for you.

Christian Stringer Betting Editor

🎬 Entertainment and culture markets

Los Angeles, California, is one of the world's preeminent entertainment capitals. CA prediction market apps let you buy contracts on everything from the Grammys and the Academy Awards, via Oscars betting sites, to the performance of movies at the box office, songs on the Billboard Hot 100, video games, and more. You can also trade contracts involving celebrities’ relationships and other pop culture events.

Best platform for entertainment and culture predictions

Kalshi offers markets on the most popular pop culture topics, as well as upcoming award shows and other cultural milestones. 

Christian Stringer Betting Editor

California-specific rules for prediction markets

California prediction markets are technically legal, but the platforms that offer them operate in a gray area, and the future is still uncertain. 

California has made it illegal for residents to bet on sports and other events through traditional betting sites. However, prediction market platforms exploit a loophole that allows them to be regulated by and operate under the CFTC rather than the California Gambling Control Commission. This enables you to buy and sell event contracts rather than place wagers on these platforms, which keeps them legal.

Other states, such as New York and New Jersey, have introduced legislation to block prediction markets, and similar measures could also be introduced in California. 

For now, you should still keep these California-specific rules for prediction markets on your radar:

Age requirements: You must be at least 18 to sign up for and use prediction market platforms.

Tax treatment of winnings: You must report any profits generated through prediction market platforms as investment income or capital gains and not gambling winnings. This could benefit you, as long-term capital gains are typically taxed at a lower rate than gambling winnings.

Understand potential risks of California prediction markets

Before you trade contracts through Kalshi, Polymarket, FanDuel Predicts, Crypto.com, or another platform, you need to understand the potential risks:

• Ever-changing landscape: California’s laws regarding prediction markets are always at risk of alteration, so make sure you monitor any developments that could cause legal issues.
• Choose a solid community: We always recommend a platform with a large, stable user base. The more users there are, the less volatility and price fluctuations you can expect, making trading easier.
• Find a prediction market that suits your needs: Make sure you choose a platform that actually provides what you want. That could mean offering specific markets about your favorite sports or topics, the ability to deposit and withdraw in cryptocurrencies or other methods, or offering a high-quality mobile app. Not every platform is equal, so choose the one that works for you. 

How California compares to neighboring states

California is bordered by Oregon, Nevada, and Arizona, and all three are fighting to eliminate prediction market platforms.

These platforms remain legal in Oregon, but they have faced numerous legal challenges over the last year. Most recently, a class-action lawsuit was filed against Kalshi, suggesting changes could be coming to the state’s laws soon.

Similarly, the Nevada Gaming Control Board (NGCB) has taken aim at Kalshi, Polymarket, and other prediction market platforms by taking legal action against them. Officials claim they’re “offering people a way to illegally bet on sports.”

The Arizona Department of Gaming (ADG) has also tried to shut down prediction market platforms by sending cease-and-desist orders to Kalshi, Robinhood, and Crypto.com. The ADG has taken things a step further, too, warning legal sportsbooks against partnering with these platforms.

Further south, Lone Star State residents can trade Texas prediction markets, while on the other coast, Interested users can sell New York prediction markets and Florida prediction markets.

The regulatory landscape for prediction markets

Modern-day prediction markets date back to the late 1980s and early 1990s. However, their popularity has increased exponentially over the last five years, and the regulatory landscape has scrambled to keep pace. 

One of the highest-profile regulatory disputes involving a prediction market platform occurred in 2022, when the CFTC fined Polymarket nearly $1.5 million and ordered it to stop offering contracts to U.S. users. This led the platform to temporarily leave the country before re-emerging in 2025 following its acquisition of the CFTC-registered QCEX. The CFTC now recognizes Polymarket as a legitimate operation, enabling it to resume normal operations in the U.S.

More recently, many state regulators have begun issuing cease-and-desist orders to platforms, accusing them of exploiting loopholes to offer online gambling opportunities to residents of states that don’t allow legal sports betting. Massachusetts was the first state to do this, with Connecticut, Illinois, Michigan, Nevada, New Jersey, New York, Tennessee, and others all following its lead.

Many tribal gaming groups have also demanded that these platforms stop operating. The Indian Gaming Association and the National Congress of American Indians have been two of the most vocal opponents. As far as California is concerned, the California Nations Indian Gaming Association has raised objections to prediction markets in the state. 

California prediction market recent updates

March 9, 2026: Underdog poised to offer event contracts after acquiring Aristotle’s CFTC-regulated exchange and clearinghouse licenses.

March 2, 2026: DraftKings is expanding nationwide with its Sports & Casino app, blending sportsbook and prediction market elements.

Jan. 15, 2026: FanDuel launches prediction markets in California featuring FanDuel Predicts, with sports event contracts offered in 18 of those jurisdictions.

Dec. 19, 2025: DraftKings officially launches DraftKings Predictions in 38 states, including 17 states with sports markets.

Dec. 3, 2025: Polymarket is rolling out its U.S. app to those on the waitlist, beginning with prediction markets on sports.

Are prediction markets worth trying in California?

My final verdict is yes, prediction markets are worth trying in California. Since sports betting is illegal in the Golden State, these platforms provide an excellent legal alternative for sports fans, offering many markets that mimic the betting lines you’ll find at sportsbooks in legal sports betting states.

Many platforms, such as Kalshi, offer welcome bonuses and other promotions that let you test their trading platform without taking on too much risk up front.

Importantly, California prediction markets are legal and regulated, at least for now. I recommend being mindful about the potential for this to change in the future, given what we have seen in other states. 

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