Best Offshore Sportsbooks in California – 2025 Guide

Offshore sportsbooks remain one of the hottest and most talked-about options in the US gambling scene, especially in states like California where local betting laws are still unclear. In this guide, you’ll find everything you need to stay ahead in 2025. We’ll highlight the most trusted offshore sportsbooks – including BetOnline, BetUS, SportsBetting.ag, and Bet105 – and show you what makes each platform worth your time and money.

Whether you’re interested in the latest legal updates or simply looking to claim the biggest bonuses, this article delivers expert-backed reviews and essential insights.

You’ll learn how to create an account, fund it with safe payment methods (including crypto), unlock welcome offers, and start betting on your favorite sports from anywhere in the Golden State. With full coverage of mobile betting, insider analysis, and user-first recommendations, this is your ultimate offshore sports betting resource for California in 2025.

List of the Best California Offshore Sportsbooks

Here’s a curated list of the best offshore sportsbooks accepting players from California. Each site offers something unique in terms of bonuses, betting markets, and reliability, making them perfect for Golden State bettors seeking secure and rewarding platforms.

• BetOnline – Premium Offshore Sportsbook with Sports, Casino & Poker Options
• BetUS – Huge 125% Welcome Bonus Across Sports & Casino for California Players
• SportsBetting.ag – Trusted Offshore Sportsbook with Longstanding Reputation
• Bet105 – Transparent Odds and Flexible Bonuses for California Bettors

Top 5 Offshore Casinos Reviewed for California Sports Betting Enthusiasts

With California sports betting still navigating the regulatory landscape, many bettors are turning to offshore sportsbooks and casinos to enjoy a wide range of wagering options and lucrative bonuses.

Whether you’re a fan of NFL showdowns, NBA playoffs, or international soccer, finding a trustworthy offshore sportsbook that caters to California players is essential.

In this review, we dive into the Top 5 offshore sportsbooks that provide seamless betting experiences for Californians—covering everything from competitive odds and welcome bonuses to secure payment methods and mobile-friendly platforms.

BetOnline – The Complete Offshore Sportsbook

BetOnline is one of the most popular offshore sportsbooks for California bettors, offering sports betting, casino games, and poker in one place. With crypto-friendly deposits, fast payouts, and a 50% welcome bonus up to $250 plus 100 free spins, it’s a top choice for all-around betting.

BetUS – Biggest Bonus Package for Californians

BetUS stands out with its massive 125% welcome bonus (100% sports + 25% casino) across your first three deposits. This offshore sportsbook has decades of experience, competitive betting lines, and a strong reputation for serving California sports betting fans.

SportsBetting.ag – Trusted Offshore Option

SportsBetting.ag is a reliable offshore sportsbook that consistently delivers fast payouts and sharp odds. New players get a 50% deposit bonus up to $250, making it an attractive choice for Californians seeking a well-established and secure platform.

Bet105 – Transparent & Player-Friendly

Bet105 is known for its straightforward approach, offering transparent odds and no hidden restrictions. With a simple $100 deposit unlocking a $50 free bet (5x rollover), it appeals to players who value clarity and honest limits.

BetOnline – Premium Offshore Sportsbook with Generous Bonuses for California Players

BetOnline is one of the most recognized offshore sportsbooks catering to California players. Founded in 2001 and licensed in Panama, BetOnline has built a strong reputation for providing an all-in-one betting experience, combining a sportsbook, casino, racebook, and poker room.

California sports betting enthusiasts choose BetOnline for its competitive odds, crypto-friendly features, fast payouts, and excellent variety of wagering markets across major US and international sports.

🎁 Bonus: 50% up to $250 + 100 Free Spins

• Promo Code: FREE250
• Minimum Deposit: $50
• Free Bets valid for 30 days (sportsbook only)
• 100 Free Spins credited as 10 per day for 10 days (expire in 24h, max win $100)

This package is perfect for new California bettors who want both sportsbook free bets and casino rewards.

📌 Key Details

• Launched: 2001
• License: Panama Gaming Commission
• Sports Covered: NFL, NBA, MLB, NHL, soccer, MMA, tennis, golf, eSports, and more
• Payments Accepted: Bitcoin, Ethereum, Litecoin, Bitcoin Cash, Visa, MasterCard, American Express, bank wire, MoneyGram

BetOnline has become a go-to offshore sportsbook for Californians thanks to:

• Wide sports coverage including all major US leagues
• Live betting with smooth and responsive markets
• Crypto-friendly banking, offering fast and secure payouts
• Casino and poker integration, giving bettors more ways to play
• Trusted reputation, with over 20 years of experience serving US players

✅ Pros

• 50% up to $250 + 100 Free Spins (FREE250 code)
• Supports multiple cryptocurrencies
• Excellent live betting features with prop builder
• Fast crypto payouts
• Includes casino, racebook, and poker

❌ Cons

• Free spins limited to selected slots with daily expiration
• Bonus rollover may feel high for casual players
• Some traditional withdrawal methods can be slower

BetOnline is one of the best offshore sportsbooks for California sports betting fans. With a generous welcome package (FREE250), reliable payouts, and coverage of all major sports, it remains a top choice for players looking for a secure and rewarding betting platform in 2025.

BetUS – Huge 125% Welcome Bonus for California Sports Betting Fans

BetUS is one of the longest-running offshore sportsbooks, serving US players since 1994. Licensed in Curacao, it has built a strong reputation among California bettors thanks to its wide sports coverage, reliable payouts, and massive welcome bonus package.

For Californians looking to bet on NFL, NBA, MLB, NHL, soccer, and even esports, BetUS offers sharp odds, live betting, and a full casino.

🎁 Bonus: 125% on Your First 3 Deposits

• 100% Sports Bonus up to $2,000
• 25% Casino Bonus up to $625
• Promo Code: JOIN125
• Minimum Deposit: $100
• Rollover: 14x (sports), 30x (casino), crypto deposits 18x rollover
• Bonus Validity: 7 days after activation
• Maximum Cash Out: $2,500

With this bonus, California sports betting fans can get up to $2,625 in total rewards spread across their first three deposits.

📌 Key Details

• Launched: 1994
• License: Curacao
• Sports Covered: NFL, NBA, MLB, NHL, soccer, UFC/MMA, tennis, golf, eSports, and more
• Payments Accepted: Bitcoin, Bitcoin Cash, Litecoin, Ethereum, Visa, MasterCard, bank wire

🏈 Why Californians Choose BetUS

BetUS is especially popular for its massive bonuses and decades of experience. The sportsbook covers all major US leagues and international sports, while also offering live betting and casino gaming. Its crypto support makes deposits and withdrawals faster and safer for California players.

✅ Pros

• Huge 125% welcome bonus with sports + casino split
• Longstanding reputation (30+ years in business)
• Wide sports coverage with live betting
• Crypto-friendly with higher deposit limits
• Includes casino and racebook

❌ Cons

• Bonus expires in 7 days (short timeframe)
• Higher rollover on casino games (30x)
• Maximum cash out capped at $2,500

BetUS is one of the most trusted offshore sportsbooks for California bettors. With its 125% welcome package (JOIN125), crypto-friendly options, and decades of proven reliability, it’s a top pick for anyone seeking a rewarding offshore betting experience in 2025.

SportsBetting.ag – 50% Welcome Bonus up to $250

SportsBetting.ag is a trusted offshore platform offering sports betting, casino games, and online poker for California players. With a strong reputation and user-friendly design, it’s one of the most popular choices for bettors looking for a reliable all-in-one site.

🔥 Welcome Bonus

• 50% Bonus up to $250 on your first deposit
• Promo Code: WELCOME
• Minimum Deposit: $50
• Free Bets valid for 30 days

✅ Sports & Features

• Wide coverage of NFL, NBA, MLB, NHL & more
• International soccer and eSports betting available
• Live betting and competitive odds
• Casino games & online poker included

💳 Payments

• Traditional banking methods and cryptocurrencies supported
• Fast and secure deposits & withdrawals

📞 Customer Support

• 24/7 live chat & email assistance

⭐ Pros

• Reliable offshore sportsbook with strong reputation
• Simple and straightforward welcome bonus
• Great coverage of US and international sports
• Casino & poker available in one platform

⚠️ Cons

• Lower welcome bonus compared to some competitors
• Higher rollover requirements for some promos

Bet105 – $50 Free Bet Welcome Offer 🎉

Bet105 is a rising offshore sportsbook known for its transparent limits and bettor-friendly features. With simple promos, fair rollover requirements, and even arbitrage bets welcome, it’s an excellent option for California sports betting enthusiasts looking for flexibility.

🔥 Welcome Bonus

• Deposit $100 – Get a $50 Free Bet
• Bonus Code: JACKPOTJAR
• Rollover: 5x (low and fair compared to industry average)

✅ Sports & Features

• Covers major US leagues: NFL, NBA, MLB, NHL
• International soccer and niche sports available
• Arbitrage-friendly platform
• Live betting markets and competitive odds

💳 Payments

• Supports crypto and traditional banking options
• Fast deposits and withdrawals with transparent limits

📞 Customer Support

• Email and live chat support
• Knowledgeable team with clear policies

⭐ Pros

• Low 5x rollover makes the bonus easy to clear
• Transparent limits for responsible betting
• Arbitrage bets are allowed (rare among sportsbooks)
• Ongoing daily promos & giveaways

⚠️ Cons

• Smaller welcome bonus compared to competitors
• Limited casino and poker options

Comparison of the Best California Sports Betting Sites (2025)

California remains one of the biggest untapped sports betting markets in the U.S. Despite multiple attempts, lawmakers and voters haven’t yet approved legal online sports betting. Until regulation arrives, players in California continue to use trusted offshore sportsbooks like BetOnline, BetUS, SportsBetting.ag, and Bet105.

These platforms provide safe betting options, competitive bonuses, and crypto-friendly payments — making them the most popular alternatives for Californians in 2025.

California Sportsbook Comparison

Sportsbook	Welcome Bonus	Features for Californians	Payment Methods	Highlights
BetOnline	50% up to $1,000 (Code: BOL1000)	NFL, NBA, MLB, NCAA, live betting, esports	Crypto, credit cards, bank	Fast payouts, huge market coverage, established since 2001
BetUS	125% up to $3,125 (Sports + Casino, Code: JOIN125)	Mix of sportsbook + casino, tons of promos	Crypto, cards, transfers	Industry-leading bonus, deep U.S. sports coverage
SportsBetting.ag	50% up to $250 (Code: WELCOME)	Sports, casino, and online poker in one platform	Crypto, Visa/Mastercard, bank	Trusted brand, low minimum deposit, strong odds
Bet105	$50 Free Bet on $100 deposit (Code: JACKPOTJAR)	Arbitrage-friendly, transparent rollover (5x)	Crypto + cards	Simple bonus terms, ideal for casual and sharp bettors

Is Sports Betting Legal in California?

As of 2025, sports betting is not yet legal in California.

• Horse racing is the only form of legal sports wagering.
• Ballot initiatives in 2022 (Props 26 & 27) failed, highlighting conflicts between tribes, operators, and lawmakers.
• Analysts predict the earliest possible legalization may happen after 2026.

Until then, Californians rely on offshore sportsbooks — which legally accept U.S. players.

Why Offshore Sportsbooks Are Popular in California

With no local sportsbooks, offshore sites remain the only practical option for Californians who want to bet online. The best sites offer:

• Major U.S. sports coverage (NFL, NBA, MLB, NCAA)
• International betting (soccer, tennis, MMA, esports)
• Crypto-friendly banking for fast deposits and withdrawals
• Generous bonuses and ongoing reload offers
• Mobile compatibility for easy betting on the go

How to Bet on Sports in California (Step by Step)

1. Choose a trusted sportsbook – BetOnline, BetUS, SportsBetting.ag, or Bet105.
2. Sign up quickly – Register with your email, username, and password.
3. Deposit funds – Crypto payments are fastest; cards and bank transfers also available.
4. Claim your bonus – Use promo codes like BOL1000, JOIN125, WELCOME, or JACKPOTJAR.
5. Start betting – Place wagers on NFL, NBA, MLB, NCAA football, soccer, tennis, or esports.

Types of Bonuses Available

• Deposit Match Bonuses – e.g., BetOnline (50% up to $1,000), BetUS (125% up to $3,125).
• Free Bets – e.g., Bet105’s $50 free bet on a $100 deposit.
• Reload Bonuses – Regular deposit boosts for returning players.
• Crypto Bonuses – Extra rewards for using Bitcoin, Ethereum, or other cryptos.
• Cashback & Insurance – Weekly cashback and parlay protection on select sites.

Responsible Gambling

Even when using offshore sites, responsible play is essential:

• Set a budget before betting.
• Use self-exclusion tools if needed.
• For help, contact 1-800-GAMBLER or visit Gamblers Anonymous.

Final Verdict: Best Offshore Sportsbooks for Californians (2025)

Until official legalization, offshore sportsbooks remain the best solution for California sports fans.

• BetOnline → Best all-around platform for experienced bettors.
• BetUS → Biggest welcome bonus in the industry.
• SportsBetting.ag → Balanced sportsbook, poker, and casino in one.
• Bet105 → Best for casual players and arbitrage-friendly bettors.

👉 For Californians, these sportsbooks provide safe, fast, and rewarding betting options until the state regulates the market.

California Sports Betting FAQ (2025)

Is sports betting legal in California?

No. As of 2025, online and retail sports betting remain illegal in California. The only legal option is betting on horse racing at licensed tracks. Until legalization, Californians use offshore sportsbooks that accept U.S. players.

When will California legalize sports betting?

The earliest projections suggest after 2026, as previous ballot measures (Props 26 & 27 in 2022) failed due to conflicts between tribes, commercial operators, and lawmakers.

Are offshore sportsbooks safe for California players?

Yes, if you stick to trusted and licensed offshore platforms like BetOnline, BetUS, SportsBetting.ag, and Bet105. These sites have years of experience, secure payment systems, and strong reputations with U.S. players.

Can Californians use mobile apps for sports betting?

Yes. While there are no state-regulated apps, offshore sportsbooks are fully mobile-compatible. You can place bets directly from your smartphone or tablet browser without needing a download.

What payment methods can I use?

Most offshore sportsbooks accept:

• Cryptocurrencies (Bitcoin, Ethereum, Litecoin, etc.)
• Credit and debit cards (Visa, Mastercard)
• Bank transfers and e-wallets

Crypto is the fastest and most private option for Californians.

What types of bonuses are available?

The best California offshore sportsbooks offer:

• Deposit match bonuses (e.g., 50% up to $1,000 at BetOnline)
• Free bets (e.g., $50 free bet at Bet105)
• Reload bonuses for returning players
• Special crypto deposit offers

Can I bet on college sports in California?

Yes. Offshore sportsbooks allow betting on NCAA football and basketball, which are hugely popular among California players.

Are winnings from offshore sportsbooks taxable?

Yes. All gambling winnings are taxable under U.S. federal law. While offshore sportsbooks don’t report directly to the IRS, players are responsible for declaring their earnings.

Is it safe to use crypto for betting?

Yes. Crypto deposits and withdrawals are fast, secure, and private, making them one of the most popular options among California bettors.