Short version: as of May 2026, Polymarket is not legally available to US-based users. It geo-blocks US IPs at the website level, and the Department of Justice has actively investigated its US operations. There are workarounds people use, but they are not legal under US law as currently interpreted. The US-legal alternative is Kalshi, which does many of the same things under CFTC oversight.
This post breaks down what actually happened, what the current status is, what's likely to change, and what your real options are if you're a US-based trader who wants exposure to prediction markets.
Disclaimer: I'm not a lawyer. None of this is legal advice. The regulatory landscape changes quickly and this post is accurate as of May 18, 2026 — by the time you read it, something may have moved. When the stakes are real, talk to an actual attorney.
The Short Timeline (2022 — Today)
- January 2022: CFTC fines Polymarket $1.4M and orders it to wind down access to all US persons. Polymarket complies by implementing geo-blocking and KYC.
- 2022–2024: Polymarket continues operating internationally. US users can still technically reach the site through VPNs, but doing so violates Polymarket's terms of service and is in a gray area under US law.
- November 2024: FBI raids the apartment of Polymarket's CEO Shayne Coplan. No charges filed at the time. Investigation focused on whether Polymarket was knowingly allowing US users via the VPN workaround.
- January 2025: Donald Trump returns to the White House. Administration is publicly more favorable to crypto and prediction markets than the prior administration.
- Summer 2025: Polymarket announces intent to seek a path back into the US, potentially via acquisition of a CFTC-registered designated contract market (DCM).
- Early 2026: Polymarket reportedly closes acquisition of QCX, a CFTC-licensed exchange, with intent to launch US-facing markets in late 2026. Has not launched yet as of May 2026.
The trajectory is clearly toward legality, but it isn't there yet. Anyone telling you "Polymarket is legal in the US now" in May 2026 is either confused or selling you something.
What "Geo-Blocked" Actually Means
Polymarket's website (polymarket.com) detects US IP addresses and refuses to serve the trading interface. The KYC layer (Persona) also rejects US-issued government IDs at account creation. Both layers are enforced.
What people do anyway:
- VPN to an international jurisdiction. Connect to a non-US server, register with international ID, fund via USDC on Polygon. Technically possible. Violates Polymarket's TOS. Triggers AML/KYC concerns if discovered.
- Use someone else's account. Don't.
- Trade through a friend who's actually international. A friend cannot legally bet on your behalf any more than they can drive your DUI for you.
The CFTC's position has historically been that US persons trading on unregistered foreign exchanges is itself a regulatory issue — not just for the exchange, but for the trader. Enforcement against individual traders has been rare but not unheard of, particularly for high-volume accounts that touch US banking infrastructure.
If you are a US-based trader and you want to use Polymarket via VPN, you are doing so against the explicit terms of service of the platform and in a legal gray area where the worst case scenarios include account closure, frozen funds, and (low probability but nonzero) regulatory action against you personally. Decide accordingly.
"Polymarket — Is It An American Company?"
This question comes up because the company's leadership is American (CEO Shayne Coplan is from New York) and the company is widely covered by US media. But the operational entity is structured as a non-US company specifically to avoid US regulatory jurisdiction over its trading activity. Polymarket Ltd. operates out of jurisdictions friendly to crypto, and the exchange itself runs on the Polygon blockchain — which is decentralized in the sense that the smart contracts aren't hosted in any single country.
So the answer is: the people are largely American. The product is global. The legal entity is structured offshore. It's an American-founded, globally-operated, US-restricted exchange — which is exactly the configuration the CFTC's 2022 settlement was designed to enforce.
The US-Legal Alternative: Kalshi
Kalshi is a US-headquartered, CFTC-regulated Designated Contract Market (DCM). It was approved by the CFTC in 2020 as the first regulated event-contract exchange in the US. As of 2026, it offers binary contracts on economic indicators, weather, politics (a court ruling in late 2024 cleared political contracts at the federal level), and — most relevantly for sports traders — sports event contracts, which it added in early 2025 after a regulatory back-and-forth.
What's different from Polymarket:
| Dimension | Polymarket | Kalshi |
|---|---|---|
| Regulator | None (offshore) | CFTC |
| US-legal | No | Yes |
| Funding | USDC on Polygon | ACH from US bank |
| KYC | Persona, non-US IDs | Standard US KYC (SSN, etc.) |
| Sports markets | Yes, deep liquidity | Yes, growing liquidity |
| Political markets | Yes | Yes |
| Fee structure | Maker/taker on CLOB | Per-contract fees |
| Order book depth | Generally deeper (older + larger) | Improving rapidly |
| 1099 / taxes | You're on your own | Issues 1099 |
For a US-based trader, Kalshi is the default answer to "I want to trade event contracts." It is not a perfect Polymarket substitute — liquidity in some sports markets is still thinner, and the fee structure is different — but it is fully legal, US-banking-compatible, and growing. Read our Polymarket vs Kalshi comparison for a head-to-head breakdown across all the dimensions that matter for a sports trader.
What About DraftKings, FanDuel, BetMGM?
Sportsbooks like DraftKings are not prediction markets and don't compete with Polymarket on the dimensions sharp traders care about.
- Sportsbooks set prices and take the other side of your bet (book = counterparty). Books include a margin ("vig" or "juice") of typically 4-6% on standard moneylines.
- Prediction markets are peer-to-peer exchanges. The platform takes a fee but doesn't set or absorb the price. Spreads are tight at the inside, and you can be the market-maker if you want.
For pure expected-value sports trading, prediction markets win. For convenience, lots of promo dollars, and live-cashout features, sportsbooks win. Different products, different audiences.
What's Likely to Happen Next
The path to US-legal Polymarket runs through CFTC approval of a Designated Contract Market or Swap Execution Facility license, either directly or through an acquisition. As of May 2026:
- Polymarket has reportedly acquired a CFTC-licensed entity (QCX) and is working through the regulatory steps to launch US markets.
- Industry expectation is late 2026 or 2027 for a US-facing launch.
- Initial US markets will likely be narrower than the global product — political markets, economic indicators, and a curated set of sports contracts.
- The current geo-block will probably remain on the international polymarket.com domain even after US launch — the US product will live on a separate, CFTC-regulated platform.
If you're a US-based trader waiting for legal Polymarket access, the realistic horizon is months, not weeks. Kalshi is the bridge.
The Pragmatic Answer
If you're a US trader and you want to start trading event contracts today, legally, here's the actual play:
- Open a Kalshi account. ACH funding, standard KYC, fully legal.
- Trade Kalshi's sports markets. Liquidity is growing fast — particularly NFL, NBA, NHL, MLB, and major tournaments.
- Wait for legal Polymarket. Subscribe to their newsletter; the US launch will be announced loudly when it happens.
- Use calibrated probabilities, not gut. Sharp pricing is what makes any prediction-market strategy work, regardless of which venue you're on.
That last point is what we do at ZenHodl: we publish calibrated win probability APIs for 10+ sports, with the same probability outputs that drive our automated bots on both venues. If you're trading Kalshi today and want to be ready for Polymarket tomorrow, the model layer is the same — only the execution stack changes.
Frequently Asked
Can I use Polymarket if I'm a US citizen living abroad? The geo-block looks at IP. If your IP is non-US and you have non-US ID, you can register. Whether you're allowed to trade as a US person under US law is a separate question — for most everyday people, the answer is gray. Talk to a tax attorney if you're trading meaningful size.
Can I be charged with a crime for using Polymarket via VPN? Individual US users have not historically been prosecuted criminally for using Polymarket. The CFTC's enforcement has been at the platform level, not the user level. That said, "no past enforcement" is not the same as "no risk."
Will Polymarket refund US users who got caught and had their accounts closed? Polymarket has, in practice, processed withdrawals for accounts it later identified as US-based after detection — but on its own timeline and at its own discretion. Don't park large balances on a platform you're not supposed to be on.
Is Kalshi as good as Polymarket? Different. Kalshi has tighter US regulatory oversight, US banking, and tax reporting. Polymarket has deeper liquidity in many markets and longer history. For a US-based trader, the right comparison is "Kalshi vs nothing legal" — and Kalshi wins that one.
What probabilities should I trust? Both Polymarket and Kalshi prices are reasonably efficient at scale, but neither is calibrated by design — they're whatever the order book says. If you want a calibrated, ML-driven probability to trade against, you need a model. We publish ours via API; pricing here.
Bottom Line
In May 2026, Polymarket is geo-blocked in the US and Americans cannot legally use it. The legal alternative for US-based traders is Kalshi. A US-legal Polymarket is likely but not imminent. The smartest preparation is to be on Kalshi now with a calibrated probability source — when Polymarket opens up, the same model is what you'll trade with.
For a deeper walkthrough of how prediction markets actually work, start with our beginner's guide. For how to trade Polymarket if you're internationally based, see the first-time user guide. And for a venue-by-venue comparison, Polymarket vs Kalshi is the canonical breakdown.