Short answer: yes, in most of the United States, on regulated exchanges, with real caveats. The longer answer depends on which venue you use and which state you live in, and the rules have moved substantially in the last two years.
The distinction that decides everything
US law does not treat all wagers on outcomes the same way. What matters is whether the thing you are buying is classified as a gambling wager or as an event contract, which is a regulated financial instrument overseen by the Commodity Futures Trading Commission.
That difference is not cosmetic. It determines which regulator supervises the venue, what happens to your money if the platform fails, how disputes are resolved, and how the proceeds are reported for tax. It is the reason we describe this activity as trading rather than betting, and it is the first thing to establish about any platform.
CFTC-regulated exchanges
A designated contract market registered with the CFTC can list event contracts to US residents. Trades happen on an exchange, resolution follows published rules, and the operator is subject to federal oversight and audit.
Kalshi is the most established example. We cover its regulatory status in detail in is Kalshi legit, including what the CFTC registration does and does not guarantee.
Regulation is not the same as safety. It means there is a supervisor and a rulebook. It does not mean you cannot lose money, and you can.
Offshore and blockchain-based venues
Polymarket operates differently, settling on public blockchains. Its access rules for US residents have changed over time and are the single most important thing to verify before funding an account, because they can change again.
The practical guidance is simple: check the platform’s own current terms for your jurisdiction rather than relying on any article, including this one. We update our platform pages, but terms can change faster than any publisher.
Election contracts specifically
Contracts on election outcomes have been the most legally contested category, and the position has shifted through a series of court decisions and regulatory filings. This is the area where the gap between what was true two years ago and what is true today is widest.
If you are here because of the midterms, our 2026 midterm market tracker shows what is currently trading and where.
State-level differences
Federal registration does not override every state rule. Some states restrict certain contract categories, and platforms typically enforce this with geographic controls at signup. If a platform blocks your state, that is the answer for you regardless of the federal position.
Tax treatment
Proceeds are taxable. On CFTC-regulated venues, activity is generally reported to you and to the authorities in ways that resemble other financial instruments rather than casual gambling winnings. The mechanics differ enough to matter, and we cover them in are Kalshi event contracts taxable.
Nothing on this page is tax advice. Records matter, and a professional is worth the fee if the amounts are meaningful.
How to verify a platform yourself
Do not take any publisher’s word for regulatory status, including ours. The check takes a few minutes and it is the same check every time.
- Find the registered entity name in the platform’s terms or footer. Marketing names and legal entities often differ.
- Look the entity up in the regulator’s own register rather than on the platform’s marketing pages. A registration that exists will be listed by the regulator.
- Confirm the registration category. Being registered for something is not the same as being registered to offer event contracts to retail customers.
- Read the resolution and dispute sections of the contract rules, not the FAQ. The FAQ is written by marketing; the rulebook is what binds.
- Check your own state at signup. Geographic restrictions are enforced at account level and will override anything you read.
Red flags worth taking seriously
- Guaranteed returns or “risk-free” language. No legitimate venue promises this, because no one can.
- No published resolution rules. If you cannot find out exactly how a contract settles, you do not know what you own.
- Pressure to deposit quickly through bonuses or countdowns. Regulated exchanges compete on fees and liquidity, not urgency.
- Unclear custody of funds. You should be able to establish where your money sits and what happens to it if the operator fails.
- Withdrawal friction that appears only after you deposit. This is the most common complaint pattern across every category of platform.
What has changed recently, and why it keeps changing
The legal position on event contracts has been unusually fluid because it sits at the boundary of two regulatory traditions: federal commodities law, which governs hedging and derivatives, and state gambling law, which governs wagering. Contracts on real-world outcomes can plausibly be described either way, and the answer has been worked out case by case rather than settled in a single ruling.
The practical consequence for a reader is that anything written more than a year ago should be treated as historical. That includes confident claims in either direction. When we update our platform pages we date them for exactly this reason, and we would encourage the same scepticism toward any undated source.
A note on framing
We describe this activity as trading event contracts rather than betting, and that is not a euphemism. On a regulated exchange the instrument genuinely is a financial contract with defined settlement, oversight and reporting. Calling it gambling misdescribes both the legal category and the risk profile.
That said, the honest converse also holds. Buying a contract because you think an outcome is likely, with no hedging purpose and no edge beyond a hunch, carries the same risk of loss as any speculative position. The regulatory wrapper changes the venue, not the arithmetic.
Questions people ask
Is this the same as sports betting?
Legally, usually not. Sports betting is licensed state by state under gambling law. CFTC-regulated event contracts sit under federal commodities regulation. Some platforms now list sports-adjacent contracts, which has blurred the line and attracted scrutiny.
Can I lose more than I put in?
On standard event contracts, no. A contract settles at either its full value or nothing, so your maximum loss is what you paid. That is still a total loss.
What if a platform refuses to pay out?
On a regulated exchange you have a defined complaints route and a supervisor. Off one, you have the platform’s own goodwill. This is the practical difference regulation buys you.
Do I need to be a US citizen?
No, but you generally need to satisfy the platform’s residency and identity checks, and those vary by venue.
This is general information, not legal advice. Rules differ by state and change frequently; verify current terms with the platform before funding an account. Bellwether earns a referral commission from some platforms we link to, which does not change our assessments.