Is Polymarket Legal? US Rules Explained (2026)
Polymarket settled with the CFTC for $1.4M in 2022 and left the US. Here's its current legal status and what US traders need to know.
Polymarket is the biggest prediction market in the world by trading volume. Billions of dollars flow through its markets on everything from elections to interest rates to whether Elon Musk will tweet 200 times in a week. But there’s a question that comes up constantly: is it actually legal?
The short answer is complicated. Polymarket isn’t illegal the way running an unlicensed casino is illegal. But it’s also not a regulated exchange, and it’s got a real enforcement history with US regulators. Here’s exactly where things stand.
The CFTC Settlement: What Actually Happened
In January 2022, the Commodity Futures Trading Commission (CFTC) charged Polymarket with operating an unregistered derivatives exchange. Polymarket settled for $1.4 million and agreed to wind down its US-facing operations.
The key points:
- Polymarket was offering binary options (event contracts) without CFTC registration
- The CFTC classified these contracts as swaps, which require exchange registration
- Polymarket didn’t admit or deny the charges
- As part of the deal, Polymarket agreed to block US users
After the settlement, Polymarket geo-blocked US IP addresses and started requiring non-US identity verification for larger accounts. The platform kept operating internationally and grew like crazy — particularly during the 2024 US presidential election.
Can US Traders Still Access Polymarket?
Officially, no. Polymarket’s terms of service prohibit US persons from using the platform, and the website blocks US IP addresses.
In practice? It’s murkier. Polymarket runs on public smart contracts deployed on the Polygon blockchain. For a full walkthrough of how the platform works, see our Polymarket trading guide. These contracts are permissionless — anyone with a crypto wallet can interact with them directly, regardless of location. Some US users access the platform through VPNs or by interacting with the contracts without using Polymarket’s frontend.
This is a gray area. Using a VPN to get around the geo-block violates Polymarket’s terms of service. Whether it violates US law is less clear. The CFTC went after Polymarket the company, not individual users. No US trader has been prosecuted for using the platform.
That said, there are real risks:
- Account seizure: Polymarket can freeze accounts it identifies as US-based
- Withdrawal issues: If you get flagged, you may have trouble getting your money out
- No legal recourse: If something goes wrong, you’ve got no regulatory protections
- Evolving enforcement: The CFTC could start going after users in the future
How Polymarket Differs from Regulated Exchanges
The biggest difference between Polymarket and a platform like Kalshi is regulation. Here’s what that actually means in practice:
| Kalshi | Polymarket | |
|---|---|---|
| CFTC registered | Yes (DCM) | No |
| US users allowed | Yes (most states) | No (officially) |
| Fund protection | Segregated accounts | Self-custody crypto wallet |
| Identity verification | Required (KYC) | Optional (for small accounts) |
| Tax reporting | Issues 1099-B | No tax forms |
| Dispute resolution | CFTC oversight | None |
| Settlement currency | USD | USDC (stablecoin) |
| CFTC enforcement history | Clean | $1.4M settlement (2022) |
The regulatory difference matters most when something goes wrong. If Kalshi mishandles your funds, the CFTC can step in. If Polymarket has an issue, you’re on your own — your funds sit in a smart contract on Polygon, not in a segregated bank account.
The 2024 Election Changed Everything
Polymarket became a household name during the 2024 US presidential election. The platform famously predicted Trump’s victory more accurately than virtually every major poll, processing hundreds of millions in election-related volume.
This created a weird paradox. Polymarket proved that prediction markets work — that crowds putting real money on outcomes can outperform traditional forecasting. But it did so on a platform that US residents aren’t supposed to use.
The election also intensified the regulatory debate. Some in Washington pointed to Polymarket’s accuracy as evidence that prediction markets should be more broadly legalized. Others argued that the massive unregulated volume was exactly why oversight is necessary. Both sides had a point.
Is Polymarket Gambling?
This is one of the most debated questions in prediction market law. The CFTC’s position is that Polymarket’s contracts are swaps (financial derivatives), not gambling. That distinction actually matters a lot — it means they fall under financial regulation rather than state gambling laws.
If prediction market contracts were classified as gambling, each state’s gambling commission would regulate them separately, creating a patchwork of rules. The CFTC’s classification as financial instruments means federal regulation applies uniformly.
For Kalshi, this classification is a feature — they applied for and received CFTC registration as a Designated Contract Market. For Polymarket, the same classification is what triggered enforcement, because they were offering financial derivatives without registration.
The practical difference for you: Kalshi’s CFTC registration means your activity is legal financial trading. Polymarket’s lack of registration means you’re in a regulatory gray zone.
What About Other Countries?
Polymarket’s legal status varies by jurisdiction:
- United States: Not available (CFTC settlement, geo-blocked)
- United Kingdom: Accessible, though the FCA hasn’t issued specific guidance on crypto prediction markets
- European Union: Accessible in most countries, subject to MiCA crypto regulation
- Canada: Accessible, no specific restrictions
- Australia: Accessible, ASIC hasn’t targeted prediction markets
In most countries outside the US, Polymarket operates in a largely unregulated space. It’s neither explicitly legal nor illegal — there just aren’t specific laws addressing crypto prediction markets in most places.
The Future: Will Polymarket Become Legal in the US?
There are a few scenarios that could change things:
Scenario 1: Polymarket gets CFTC registration. They could apply to become a registered DCM like Kalshi. This would mean overhauling their whole model — KYC for all users, compliance infrastructure, ongoing oversight. The crypto-native, pseudonymous experience would fundamentally change.
Scenario 2: Congress passes prediction market legislation. Several bills have been introduced that would create a clearer legal framework. Broader legalization could open a path for platforms like Polymarket to operate in the US.
Scenario 3: The CFTC changes its approach. Under different leadership, the CFTC could take a lighter touch, particularly if crypto prediction markets are seen as providing valuable price discovery.
Scenario 4: Nothing changes. Polymarket keeps operating internationally while US users either stick with Kalshi or find their own way onto Polymarket through unofficial channels.
What US Traders Should Do
If you’re a US-based trader interested in prediction markets, here’s the straightforward advice:
Use Kalshi for legal, regulated access. Kalshi covers economics, politics, crypto, weather, and more. You get tax reporting, fund protection, and full regulatory compliance. The trade-off is higher fees and sometimes thinner liquidity compared to Polymarket.
If you choose to use Polymarket, understand the risks. No fund protection, no tax forms (you’ll need to handle taxes yourself), and the possibility of account restrictions if you’re identified as a US user. Keep meticulous records and use a dedicated wallet.
Watch the regulatory landscape. Prediction market regulation is evolving fast. What’s illegal or gray-area today could be fully legal within a year or two. The political will to expand prediction market access is growing on both sides of the aisle. For a broader look at your options, see our best prediction market platforms comparison.
The Bottom Line
Polymarket isn’t a scam and it’s not going away. It’s the most liquid prediction market in the world with a proven track record. But for US traders, it operates outside the regulatory framework, and using it carries real — if currently unenforced — legal risk.
The safest path for US traders is Kalshi or waiting for the regulatory environment to catch up. The most likely outcome is some form of broader legalization, given the growing recognition that prediction markets provide genuine value. Until then, know the rules, know the risks, and make an informed choice.