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Is Polymarket Legal in the US? The 2026 Answer

polymarket legality kalshi prediction-markets regulation us-users

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)

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:

  1. 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.
  2. Use someone else's account. Don't.
  3. 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.

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.

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:

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:

  1. Open a Kalshi account. ACH funding, standard KYC, fully legal.
  2. Trade Kalshi's sports markets. Liquidity is growing fast — particularly NFL, NBA, NHL, MLB, and major tournaments.
  3. Wait for legal Polymarket. Subscribe to their newsletter; the US launch will be announced loudly when it happens.
  4. 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.

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