Is Polymarket Legal in the US?
Short answer: yes, as of 2026, with important caveats. Polymarket is accessible to US users after the late-2024 settlement that resolved the prior CFTC restrictions, but the regulatory framework is meaningfully different from Kalshi. Here's what US traders need to know.
Polymarket is legal for US users in 2026, following the November 2024 settlement that resolved the prior US restrictions. From 2022 to late 2024, Polymarket geo-blocked US users due to a CFTC enforcement action; that restriction has been lifted. US users can now create accounts, fund them with USDC, and trade on every market the platform offers.
The regulatory framework around Polymarket is materially different from Kalshi, however. Polymarket is a decentralized exchange running on the Polygon blockchain, with international operations and a community-driven listing process. Where Kalshi is fully CFTC-regulated under federal financial law, Polymarket sits in a more loosely defined regulatory space, with the legal framework still evolving across federal and state lines.
This guide covers the regulatory history, the current US legal status, the differences vs Kalshi, the crypto angle, and tax implications.
Polymarket's Regulatory History
Polymarket launched in 2020 as a decentralized prediction market on Polygon, available globally. By 2021 it had become one of the largest crypto-native event markets, drawing volume on politics, sports, crypto prices, and pop culture.
In January 2022, the CFTC brought an enforcement action against Polymarket for offering unregistered binary event contracts to US users. Polymarket settled, paid a $1.4 million fine, and agreed to wind down US-facing operations. From early 2022 through late 2024, Polymarket geo-blocked US IP addresses and its terms of service explicitly prohibited US users.
In late 2024, following operational changes and additional regulatory clarity, Polymarket restored US access. The platform remains decentralized and crypto-native, but US users can now legally participate.
Why Polymarket Is Different From Kalshi
The two platforms address the same broad use case (binary event contracts) but operate under fundamentally different frameworks:
- Kalshi is a CFTC-regulated Designated Contract Market. Every contract is approved by the CFTC. Trading is in USD. Custody is FDIC-insured. The legal status is the same as a commodity futures exchange.
- Polymarket is a decentralized exchange running on the Polygon blockchain. Trades settle in USDC stablecoin. Custody is in your own wallet (or Polymarket's wallet abstraction). Markets are listed via a community-governance process, not federal product approval.
The practical implications: Kalshi has tighter market curation (fewer, higher-quality markets) and stronger consumer protections; Polymarket has broader market coverage (thousands of markets, including niche and meme markets) and a more permissive listing process. For most traders, the two complement each other rather than substitute. See our Kalshi vs Polymarket arbitrage guide for how to trade both simultaneously.
How Polymarket Works in the US (2026)
For a US user in 2026, the workflow is:
- Sign up. Email signup or connect a Polygon-compatible wallet (Metamask, Coinbase Wallet, Rabby, etc).
- Fund. Deposit USDC on Polygon. If you don't already have USDC on Polygon, Polymarket has integrated on-ramps that convert from a credit card or bank transfer.
- Trade. Place limit orders on the central limit order book (CLOB), or take liquidity at the displayed price. Trades settle on-chain via smart contracts.
- Withdraw. Move USDC to a bank or another wallet.
The whole flow can be done end-to-end without ever holding actual cryptocurrency outside USDC. For traders coming from a sportsbook background, the on-chain settlement is the biggest mental model shift; for crypto-native users, Polymarket is the most polished prediction-market interface available.
State-Level Restrictions
State-level legal nuance for Polymarket is less developed than for Kalshi. A few notes:
- No formal state-by-state geo-blocking like the Kalshi / Nevada / New Jersey situation. Polymarket operates as a decentralized international platform.
- State gambling-law exposure exists in theory. Just because there's no current state enforcement action doesn't mean state laws don't apply. The decentralized structure makes state-level enforcement operationally harder.
- State tax treatment varies. Polymarket profits are reportable income in every US state, but how they're classified (capital gains vs ordinary income) depends on state interpretation of crypto-denominated trading.
Most active US traders treat Polymarket as legally accessible nationally with the standard caveat that crypto activity has its own tax and reporting layer.
Tax Treatment Is Materially Different From Kalshi
Polymarket's USDC settlement creates a more complex tax picture than Kalshi's USD trading. Three things to know:
- Each trade may technically be a taxable event involving cryptocurrency. The IRS treats crypto trading as property transactions, with capital-gain or capital-loss exposure on each disposal.
- USDC's stable peg to USD reduces but doesn't eliminate this. A USDC-to-USDC trade has minimal price movement, so realized capital gains/losses are typically small, but the reporting requirement still exists.
- Specialized crypto tax software is the practical answer. Tools like CoinTracker, Koinly, or TokenTax can ingest Polymarket trade histories and produce IRS-compatible reports.
For traders running both Kalshi and Polymarket alongside traditional sportsbooks, tax accounting can get hairy. Most active arbers and value-bettors set up separate brokerage / wallet structures and keep clean trade-by-trade logs.
Can I Run a Polymarket Trading Bot?
Yes. Polymarket provides a public API (CLOB endpoints + WebSocket feeds) and welcomes algorithmic trading. Order placement requires signing transactions with your wallet's private key, which any standard Polygon SDK supports. For a deeper read on bot setup, see our best Polymarket trading bot guide and the Polymarket arbitrage bot deep dive.
Most arbers run Polymarket alongside Kalshi to capture cross-venue arbs (the same event often prices differently across the two), and alongside sharp sportsbooks to capture cross-book arbs. Claw Arbs ships with Polymarket pre-installed for both modes.
Frequently Asked Questions
Is Polymarket legal in the US?
Yes, with caveats. Polymarket is accessible to US users following the resolution of the CFTC enforcement action that previously restricted US access. Polymarket operates internationally as a decentralized prediction market on the Polygon blockchain, settling in USDC. US users can trade on Polymarket, but the platform operates differently from US-regulated alternatives like Kalshi: there is no central US licensing entity, no FDIC-insured custody, and the legal framework is still evolving.
Why was Polymarket previously banned in the US?
In January 2022, Polymarket settled with the CFTC for offering unregistered binary event contracts to US users. Polymarket paid a $1.4 million fine and agreed to wind down its US-facing operations. From 2022 to late 2024, Polymarket geo-blocked US users via IP and the official terms of service prohibited US access. The November 2024 settlement and operational changes restored US access under a different framework.
How is Polymarket different from Kalshi legally?
Kalshi is a CFTC-regulated Designated Contract Market operating under direct US federal financial regulation. Polymarket is a decentralized exchange built on the Polygon blockchain with international operations, settling in USDC stablecoin. Kalshi has formal CFTC product approvals for every contract; Polymarket lists markets through a community-driven governance process. From a US legal standpoint, Kalshi is the more regulated of the two, while Polymarket is more permissive about which markets get listed (everything from politics to memes to macro).
Do I need a crypto wallet to use Polymarket?
Polymarket runs on the Polygon blockchain and trades settle in USDC. You need a Polygon-compatible wallet (Metamask, Coinbase Wallet, Rabby, or Polymarket's built-in email/social-login wallet) to deposit, trade, and withdraw. Polymarket has streamlined onboarding so users can sign up with email and have a wallet provisioned automatically; advanced traders typically use a self-custody wallet for full control of their funds.
Are Polymarket profits taxable in the US?
Yes. Polymarket profits are taxable for US persons. Because Polymarket trades settle in USDC (a stablecoin), each trade can technically be a taxable event involving cryptocurrency. The IRS treats crypto-denominated trading as a property transaction, which can produce both gambling-like ordinary income and capital-gains tax exposure depending on how positions are classified. Tax accounting on Polymarket is materially more complex than on Kalshi due to the crypto layer; most active US traders use specialized crypto tax software or a CPA.
Bottom Line
Polymarket is legal for US users in 2026. The regulatory framework is different from Kalshi: decentralized, crypto-settled, and less directly licensed by US federal agencies. For most active traders, Polymarket and Kalshi work better together than apart, with each platform's strengths covering the other's gaps. Polymarket has deeper market coverage and broader listing flexibility; Kalshi has tighter regulatory cover and simpler tax accounting.
If you want to trade both venues with automated arbitrage and value betting, download Claw Arbs. The platform ships Kalshi and Polymarket pre-installed, with cross-venue arb detection and execution built in.
Disclaimer: This is informational, not legal or tax advice. Crypto regulation moves fast, state laws vary, and the federal landscape is evolving. Consult a licensed attorney and CPA for guidance on your specific situation, particularly if you trade significant volume or operate across multiple US states.