Betting in the USA: How It Works

Is sports betting legal in the USA?

Yes — but the licence lives at the state level. When the Supreme Court struck down PASPA in 2018, each state gained the right to regulate sports betting itself, and roughly 38 states plus Washington DC have done so. That means whether you can bet online, which apps are available, the minimum age and the tax treatment all depend on the state you are standing in — geolocation is enforced by every licensed app.

The states that remain out (California and Texas are the big ones) are exactly where offshore sites market hardest. That is the one line worth respecting in the US market: state regulators and attorneys general actively send cease-and-desist orders to offshore operators, payment processors flag those transactions, and a dispute with an unlicensed book leaves you nowhere to complain. If your state has no legal market yet, the honest answer is to wait, not to go offshore.

American odds, decimal brains

US books quote moneyline odds: −200 means you stake 200 to win 100, +150 means a 100 stake returns 150 profit. The conversion to the decimal odds used on this site is mechanical: negative lines are 1 + 100/|line| (−200 → 1.50), positive lines are 1 + line/100 (+150 → 2.50). Our odds converter does it both ways and shows the implied probability alongside.

The maths of value betting does not change with the format: a price is worth taking only when your estimate of the probability beats the implied probability inside it. American books are sharp on major markets, but state-by-state competition means promotional pricing and line differences between books are real — comparing two or three licensed apps in your state is free money over a season.

Choosing a book: licensed only

Every state publishes its list of licensed operators — the national brands (DraftKings, FanDuel, BetMGM, Caesars and peers) plus regional books. A licence means segregated player funds, a state regulator who answers complaints, and enforced responsible-gambling tools. Offshore sites offer none of that, and using them is illegal in most states.

Between licensed books, the fundamentals decide: the margin on the leagues you actually bet, withdrawal speed to your bank, and whether the app respects winners. Line shopping across two or three state-licensed apps is legal, easy and the closest thing to a guaranteed edge the US market offers.

Taxes: winnings are income

The IRS treats gambling winnings as taxable income. Books issue a W-2G form on large wins (the classic trigger is $600+ at 300/1 odds, with different thresholds for other products), and casual bettors owe federal income tax on net winnings regardless of forms. Most betting states add their own state income tax on top; a few (like Nevada) have none.

Losses are deductible only up to the amount of winnings and only if you itemise deductions — a rule that surprises many recreational bettors. Keep a simple log of deposits, withdrawals and results; our settled-log approach on this site is exactly the habit US tax rules reward.

Frequently asked questions

Is online sports betting legal in the USA?

In roughly 38 states plus DC, yes — each state licenses operators separately and apps enforce geolocation. In the remaining states online sports betting is not yet legal, and offshore sites are not a lawful workaround.

Can I use offshore betting sites from the USA?

It is illegal in most states and a bad idea everywhere: state attorneys general send cease-and-desist orders to offshore books, payments are flagged, and you have no local recourse in a dispute. Stick to state-licensed operators.

How are betting winnings taxed in the USA?

As ordinary income. Large wins trigger a W-2G form, federal income tax applies to net winnings, and most betting states add state income tax. Losses are deductible only against winnings and only if you itemise.