Is arbitrage betting legal? What the law and sportsbooks allow
Yes. Arbitrage betting is legal anywhere sports betting is legal, because each leg is an ordinary bet at a licensed sportsbook. Books can limit or close your account, but that has no legal consequence. The real risks come from offshore books, VPNs, and betting through someone else's account. Arbocado's Arbitrage Finder filters by state and sportsbook, so it shows arbs at books licensed where you bet.
- Arbitrage betting is legal anywhere sports betting is legal. No US state, and no law in the UK, Canada, or Australia, bans betting both sides of a game.
- Sports betting is legal in 39 US states plus DC as of 2026, and about 30 of them allow online betting.
- Sportsbooks can limit or close arbitrage accounts. That's a business decision with no legal penalty.
- Using offshore books, faking your location with a VPN, or betting through another person's account is where arbitrage bettors run into legal trouble.
- From the 2026 tax year, US bettors can deduct only 90% of gambling losses, so a $17.44 arb profit can create $67.80 of taxable income.
The short answer
Yes. Arbitrage betting is legal anywhere sports betting is legal. No law in the US, the UK, Canada, or Australia bans it, because each leg of an arb is an ordinary bet at a licensed sportsbook.
What sportsbooks can do is limit your account, since you're a customer they don't profit from. That's a business decision with no legal consequence. The real legal risks come from how some people bet: offshore books, VPNs, and accounts in someone else's name.
Why arbitrage betting is legal
An arbitrage is two or more bets on different outcomes of the same game, placed at books that disagree on the odds. Say FanDuel has the Lakers at +112 and DraftKings has the Celtics at +108. You bet both. Each book sees one normal bet on one team. Neither bet breaks a rule, and placing both doesn't either.
Gambling laws regulate who can offer bets, who can place them, and where. They say nothing about which combination of bets you place. In the US, the Supreme Court struck down the federal ban on sports betting in 2018 (Murphy v. NCAA), and each state now sets its own rules. None of them prohibits betting both sides of a game.
For how the gaps appear in the first place, see what arbitrage in sports betting is.
Where arbitrage betting is legal
The question "is arbitrage betting legal" comes down to whether sports betting is legal where you're standing when you place the bet. Your home address doesn't matter. Your location at the time of the bet does.
| Region | Sports betting | Arbitrage betting |
|---|---|---|
| United States | Legal in 39 states plus DC as of 2026. About 30 allow online betting; the rest are retail only. | Legal in every state with legal betting |
| United Kingdom | Legal and licensed by the Gambling Commission | Legal |
| Canada (Ontario) | Legal at books registered with iGaming Ontario | Legal |
| Australia | Legal at licensed bookmakers | Legal |
Online arbitrage needs states with mobile betting, since you'll place both legs within a minute or two. Texas and California, the two largest states, still have no legal sports betting. To see which books work best in the states that do, read the best sportsbooks for arbitrage betting.
What crosses the line
Arbitrage itself is legal. These ways of doing it are not, or they break the book's terms badly enough to get winnings withheld.
| Practice | Status | Why it matters |
|---|---|---|
| Betting both sides at licensed books | Legal | This is arbitrage betting. |
| Using offshore, unlicensed books | Illegal to offer in the US | No regulator protects your money if the book refuses to pay. |
| Using a VPN or GPS spoofer to fake your location | Illegal in many states, always against terms | Books can void bets and keep the balance. Some states treat it as fraud. |
| Betting through a friend's account | Against terms, illegal in some states | Licensed books must know who is betting. Winnings can be seized. |
| Opening a second account at the same book | Against terms | Both accounts can be closed and the winnings voided. |
| Lying during identity checks | Fraud | Withdrawals require verification, so it gets caught. |
Sportsbooks limit winning arbers, and some people respond by betting through a friend's account. That's where most legal trouble comes from. A limited account is a legal account. An account in someone else's name isn't.
What sportsbooks can and can't do
Sportsbooks don't have to take your bets. Their terms let them cut your maximum stake or close your account, and arbitrage bettors are the first ones they limit. Being limited isn't a fine or a penalty, and it doesn't follow you to other books.
Voided bets
Books can void a bet placed at an obvious pricing error, often called a palpable error. A team listed at +1200 when every other book has it at +120 is a typical example. If one leg of your arb is voided, the other leg stands alone and you're no longer hedged. That's a financial risk, not a legal one, and it's why large edges on obscure markets deserve suspicion.
Promotions
Some bonus terms exclude bets that are hedged at another book. If you use a promo as one leg of an arb, read its terms first. Breaking them can cost you the bonus, but it's still a contract issue between you and the book.
Getting paid
In US states with legal betting, licensed books can't refuse to pay a winning bet they accepted and didn't void under their posted rules. If one does, you can file a complaint with the state regulator, such as the New Jersey Division of Gaming Enforcement. Offshore books offer no such recourse.
To keep your accounts open longer, see how to avoid sportsbook limits when arbitrage betting.
Taxes on arbitrage winnings
Arbitrage profits are taxable in the US, like any gambling winnings. The catch is that the IRS doesn't see your arbs as one bet. It sees a winning bet and a losing bet. You report the winnings and deduct the losses, and you can only deduct losses if you itemize.
Starting with the 2026 tax year, the One Big Beautiful Bill Act caps the deduction at 90% of your gambling losses. Because every arb has a losing leg, that cap can tax you on more than you made.
| Amount | |
|---|---|
| Stake on +105 at one book (wins) | $496.31 |
| Stake on +102 at another book (loses) | $503.69 |
| Winnings from the +105 bet | $521.13 |
| Real profit | $17.44 |
| Deductible loss at 90% | $453.32 |
| Taxable gambling income | $67.80 |
Either way, keep a record of every bet: the book, market, odds, stake, and result. Arbocado's Pro desktop app can compile every bet you've placed into a spreadsheet for your tax preparer. For how taxes and limits affect your returns, see whether arbitrage betting is profitable.
Staying on the right side
- 1
Use licensed books only
Stick to books licensed in your state, plus a licensed exchange if one operates there. Your state regulator's website lists them. - 2
Bet from where you are
Place every bet from a state where you're allowed to. Turn off any VPN before you open a sportsbook app. - 3
Keep every account in your own name
One account per book, verified with your real details. Don't bet for anyone else or let anyone bet for you. - 4
Skip obvious errors
An edge far bigger than the usual 1% to 5% is often a pricing mistake the book will void. - 5
Record everything
Log each bet as you place it so your tax return matches the books' records.
Arbocado's free arbitrage calculator sizes the stakes for odds you've found, and the Arbitrage Finder filters by state and sportsbook, so it only shows arbs at books licensed where you bet.
Find arbs at books you can use
The Arbitrage Finder scans the major US sportsbooks and exchanges, flags sure bets, and sizes each leg.
Open the Arbitrage FinderReady to place one? Follow how to arbitrage bet, step by step.
Frequently asked questions
Is arbitrage betting legal?
Yes, anywhere sports betting is legal. Each leg of an arbitrage is a normal bet at a licensed sportsbook, and no law limits which combination of bets you place. Sportsbooks may limit your account, but that isn't a legal penalty.
Is arbitrage betting legal in the US?
Yes, in every state where sports betting is legal: 39 states plus DC as of 2026. You must be physically in a legal state when you bet, use licensed books, and bet from accounts in your own name.
Can a sportsbook ban you for arbitrage betting?
Yes. Their terms let them limit your stakes or close your account. They must still pay winning bets they accepted unless they void them under their posted rules, such as an obvious pricing error. In regulated US states you can complain to the state regulator if a book won't pay.
Do I pay taxes on arbitrage betting?
Yes. In the US you report the winning leg as gambling income and can deduct the losing leg only if you itemize. From 2026, the deduction is capped at 90% of losses, so your taxable income can be larger than your real profit. A House committee voted in September 2026 to repeal the cap, but it hasn't become law.