BANGER
2026-06-06 · 5 min read

Is Polymarket Legal in the US? The 2026 Answer

Short answer: it depends which Polymarket you mean. The international site at polymarket.com geoblocks US persons. A separate, CFTC-regulated venue called Polymarket US, operated by QCX LLC, began rolling out to US residents in December 2025 and is the only Polymarket product US persons can lawfully use today. Everything below explains how that split happened and what it means for you in 2026.

The 2022 CFTC Enforcement Action

Polymarket's legal trouble started on January 3, 2022, when the CFTC entered an order against Blockratize, Inc. (d/b/a Polymarket) for offering off-exchange event-based binary options contracts and failing to register as a designated contract market (DCM) or swap execution facility (SEF) under the Commodity Exchange Act.

The CFTC found that Polymarket had been operating this unregistered facility since approximately June 2020, offering over 900 separate event markets. The order required the company to pay a $1.4 million civil monetary penalty, reduced because of Polymarket's substantial cooperation with investigators, wind down noncompliant markets, and cease and desist from further violations. As part of the settlement, Polymarket was required to block US users from the platform.

The CFTC's core legal position: event market contracts consisting of paired binary options constitute swaps under the CEA, and swaps can only be offered on a registered exchange. Blockchain settlement did not change that analysis. As CFTC Acting Director of Enforcement Vincent McGonagle stated at the time, all derivatives markets must operate within the bounds of the law regardless of the technology used.

Three Years Offshore, Then a Regulated Return

During its US absence Polymarket grew into the world's largest prediction market by volume. Monthly trading reached $2.76 billion by October 2025. The company maintained its New York headquarters throughout, creating an ongoing compliance question about whether US persons were still accessing the platform.

The path back to US legality involved several key moves:

The Amended Order of Designation means Polymarket US now operates under the same regulatory obligations as other federally supervised exchanges. It must comply with all provisions of the Commodity Exchange Act and applicable CFTC regulations governing Designated Contract Markets, including self-regulatory obligations, reporting, customer protections, and market surveillance.

The Two Polymarkets in 2026

This is the most important thing to understand. There are now two distinct products:

The international polymarket.com site carries the deep order books on global politics and international events built up since 2022. Polymarket US is newer, starting with sports, and is expanding its contract catalog. These are operationally separate products with separate order books.

Federal Status: Legal. State Level: Watch Your State.

At the federal level, Polymarket US is legal. The CFTC asserts sole authority over event contracts traded on registered DCMs, which the agency argues preempts state gambling laws. As of June 2026, no federal law banning prediction markets has passed.

State-level pushback is real and ongoing. Several states dispute whether the federal preemption argument holds, particularly for sports-related event contracts. Nevada, New Jersey, and Maryland sent cease-and-desist letters to Kalshi over sports contracts and became the focus of federal preemption litigation. Courts in Nevada and New Jersey sided with federal preemption, while the Maryland district court reached the opposite conclusion, creating a circuit split. Both Polymarket US and Kalshi face similar state-level friction for sports contracts, while political and economic event markets face substantially less state-level resistance.

Check current state availability directly on the Polymarket US and Kalshi platforms before depositing, particularly if you are in a state with active gaming regulators. The litigation landscape is moving fast.

Polymarket US vs. Kalshi: The Practical Comparison

Kalshi is the other CFTC-regulated prediction market available to US persons. It has held its DCM license since November 2020 and has never been forced off the US market. That longer runway shows in practice.

The practical read in mid-2026: Kalshi is the simpler, more widely available fiat-native option with the broader contract catalog for US residents. Polymarket US is expanding rapidly and will likely close the gap, but it entered the market later with a narrower initial offering and crypto infrastructure requirements. Serious traders are watching both.

Running Strategies on Both Venues

If you are building or running automated strategies on Kalshi or Polymarket US, the venue keys are yours to manage. Banger (bangertrades.com) connects to both CFTC-regulated exchanges, letting you paper-trade a strategy against the live order book before going live, then enforce a declarative risk envelope (per-trade size cap, daily loss stop, max open positions) once you do. Install with pip install bangertrades, then run banger run strategy.py --paper to validate against real prices before committing capital. Banger never custodies funds; you keep your own venue credentials.

pip install bangertrades
banger run strategy.py --paper

Bottom Line

US persons cannot legally use the international polymarket.com site. Polymarket US, the CFTC-regulated DCM operated by QCX LLC, began rolling out to US residents on December 3, 2025 via a waitlist, starting with sports markets. It requires full KYC, settles through regulated intermediaries using USDC, and faces ongoing state-level friction for sports contracts in certain states. The federal picture is clear; the state picture and the full contract catalog are both still developing.

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