Sure Betting in the USA: State-by-State Legal Landscape
Sports betting legality in the US depends entirely on which state you're in, which makes account setup for arbitrage betting more complicated than in most countries.
Is sure betting legal in the USA?
It depends entirely on which state you're physically located in. Since the Supreme Court struck down the federal ban on sports betting in 2018, legality is decided state by state, and most states now allow some form of regulated sports betting, but a handful, including California and Texas, still do not. You should always confirm your specific state's current status directly rather than assuming.
Why US Sports Betting Legality Is State-by-State
Before 2018, sports betting was effectively restricted to Nevada under a federal law called PASPA. The US Supreme Court struck that law down in May 2018, which handed the decision on whether and how to legalize sports betting to each individual state rather than the federal government. Since then, the majority of states have legalized some form of sports betting, some allowing full online and mobile wagering, others limiting it to retail locations, and a smaller number still not allowing it at all.
This means there's no single answer to whether sure betting is legal in the US, only an answer specific to whichever state you're actually located in at the time you place a bet, since licensed sportsbooks are required to verify your location before accepting wagers.
Geolocation and What It Means for Arbitrage Betting
Licensed US sportsbooks use geolocation verification to confirm you're physically inside a state where they're licensed to operate before letting you place a bet, not just where your billing address is. This matters directly for arbitrage betting, since your available bookmaker portfolio can change depending on which state you're in when you place a bet, and an app that works for you at home may not work if you're traveling.
If you split time between states, it's worth checking each sportsbook's supported states directly, since coverage varies significantly between operators, some are licensed in the large majority of legal states, others in only a handful.
What to Check Before Opening a US Sportsbook Account
Confirm the sportsbook is licensed in your current state specifically, not just operating somewhere in the US, since a license in one state doesn't carry over to another. Check that odds can be displayed in decimal format, since most major US sportsbooks default to American odds, which need to be converted before plugging them into a standard arbitrage calculator.
It's also worth checking each operator's terms around multiple-outcome betting patterns, since, as in every market, US sportsbooks' terms typically allow limiting accounts identified as arbitrage activity.
American Odds vs Decimal Odds
US sportsbooks commonly display odds in American format (for example +150 or -120) rather than decimal format. Converting American odds to decimal is straightforward, for positive American odds, decimal odds equal (American odds / 100) + 1, and for negative American odds, decimal odds equal (100 / absolute value of American odds) + 1, but it's a step that's easy to get wrong under time pressure.
Many bookmaker apps let you switch the display format to decimal directly in account settings, which removes this conversion step entirely and is worth doing before you start comparing prices across sportsbooks.
Building a Multi-State Approach
Because coverage and pricing can vary meaningfully between neighboring states, bettors who are able to legally access multiple states, whether through travel or residence near a state line, generally see more arbitrage opportunities than those limited to a single state's sportsbook selection. Within any single state, spreading activity across several licensed operators rather than concentrating on one or two still widens the range of odds you're comparing.
As always, our guide on avoiding bookmaker limits applies directly here, since US sportsbooks are no exception to limiting accounts with clearly mechanical betting patterns.
Frequently asked
Is sports betting legal in every US state?
No. Most states have legalized some form of sports betting since 2018, but a handful, including California and Texas, still have not, and the details vary by state, so it's worth confirming your specific state's current status directly.
Can I use a sportsbook app from a state where I don't live?
Licensed sportsbooks verify your physical location, not your home address, when you place a bet, so you can generally use an app in any state where it's licensed and you're physically present.
Do US sportsbooks use decimal odds?
Most default to American odds format, but many allow switching to decimal odds in account settings, which is worth doing before comparing prices for arbitrage purposes.
Does crossing state lines affect my sure betting accounts?
It can. Since sportsbooks verify your physical location for each bet, your available accounts and even odds can differ depending on which state you're in when you place a bet.
Are offshore sportsbooks a legal alternative in states without regulated betting?
Offshore operators exist outside the licensed, state-regulated US market and carry different legal and consumer protection considerations. It's worth researching your specific state's laws before using one.