Can You Get in Trouble for Using Polymarket?

Using Polymarket is not automatically illegal. In many countries it is a legal product; in some it is a licensed or restricted one; in others it is treated as unlicensed gambling. The risk depends on where you live, how you access the platform and what you do with the information you have.

The more useful question is not "is Polymarket legal?" but "which specific behaviour creates which specific risk?" There are four categories: access, taxes, market conduct and account security.

Access risk

Polymarket's global platform blocks users in a long list of jurisdictions, including the United States, France, Belgium, Switzerland, Poland, Singapore, Thailand, Brazil, Spain, Italy and more than 20 others. The company's terms prohibit users in those places from trading.

Using a VPN to get around a geoblock does not change the regulator's view of the product. In France, the ANJ has warned that players on illegal sites face non-payment of winnings, payment fraud, data capture and malware. Those warnings are generic to unlicensed gambling, but they reflect the regulator's position.

In the US, the picture is split. Polymarket operates a CFTC-regulated domestic venue, but the global platform is supposed to be unavailable. The CFTC has investigated whether the company did enough to keep US users off the offshore venue. A user who circumvents the geoblock may breach the platform's terms and may be exposed to state gambling law.

The US access guide and the global bans map explain the details.

Tax risk

Profits are taxable in most jurisdictions, even when they settle in crypto. The classification varies: some countries treat event contracts as gambling (often untaxed or taxed differently), others as derivatives or capital gains.

Polymarket does not provide a universal tax report. Users are responsible for tracking deposits, withdrawals, trades, fees and the fair-market value of crypto at the time of each transaction. The Polymarket tax guide explains the records to keep.

Failing to report income is a separate offence from any gambling-law issue. It is also easier for authorities to detect than a VPN.

Market conduct risk

This is where the serious cases are.

Insider trading on prediction markets is illegal in the US when it involves misappropriated confidential information or breach of a duty. The CFTC and DOJ have brought cases. In 2026 a US special forces soldier was charged over bets on the Maduro raid, and Israeli authorities charged people over bets on military strikes.

Market manipulation is also illegal. Wash trading, spoofing, coordinated pumping and attempts to pressure journalists or officials to change an outcome can trigger civil or criminal liability. The manipulation cases article covers the patterns.

The platform can also ban accounts, freeze withdrawals and report activity to law enforcement. A ban is not a criminal conviction, but it can cost you your balance and your access.

Account and counterparty risk

Even a fully compliant user faces operational risk. Polymarket's international venue is offshore, and its terms may require disputes to be resolved in a distant forum. If the platform changes its rules or restricts access, you may have difficulty closing a position.

The custody explainer explains where funds sit. The withdrawal guide covers the practical steps.

If you are already in a restricted jurisdiction

The first step is to stop adding to the position. Do not deposit more, do not use a new VPN and do not create a second account to work around a block.

The second step is to document everything: deposits, withdrawals, trades, fees and the dates. If a regulator or tax authority asks questions, a clear record is your best defence.

The third step is to consult a local lawyer if the amounts are material. A generic article cannot tell you whether your activity is a regulatory offence, a tax issue or neither. The tax guide covers the reporting side.

What is clearly over the line

A short list:

• Trading on material non-public information obtained in breach of a duty.
• Using multiple accounts to fake volume or manipulate a market.
• Threatening or bribing someone to influence an outcome.
• Laundering money through deposits and withdrawals.
• Impersonating another person to pass identity checks.
• Circumventing sanctions.

These behaviours can lead to criminal charges, not just a platform ban.

What is a grey area

• Using a VPN in a jurisdiction where the platform is blocked.
• Trading on a market that a state court has enjoined but the federal regulator has approved.
• Relying on public but obscure information that other traders have not read.
• Copying a trader whose strategy you do not understand.

The last one is not illegal, but it can be costly. The copy-trading risk guide explains why.

A practical checklist

Before you deposit, ask:

1. Is the venue licensed or tolerated in my country?
2. Which entity holds my account, and which terms apply?
3. How will I report the gains?
4. Do I have a record of every deposit, trade and withdrawal?
5. Am I using information I have a legal right to use?
6. Can I still exit if access is blocked?

If you cannot answer those questions, the legal risk is not the only problem. The operational risk is enough to make the trade a bad idea.

This article is general information, not legal advice. Tax and gambling law vary by jurisdiction, and a local lawyer is the right person to ask about your situation.