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Polymarket Review

The biggest crypto prediction market, with deep CS2, VALORANT and LoL markets. Not open to US users or the UK.

7.3
7.3 out of 10

Betrefs score out of 10

By MattCS, updated September 2026
Provisional desk review

Website
polymarket.com
Founded
2020
Operator
Not stated
License
Not stated
Provably fair
Not confirmed
KYC
Not stated
Instant withdrawals
Not confirmed
House edge
Not published
Monthly visits
n/a
Trustpilot
No reviews

Overview

Provisional desk review: we haven't tested Polymarket with real money yet, so its score is capped at 8.5. How we review

Sports & esportsCryptoBetrefs code

What we like

  • +The biggest prediction market: politics, sports, crypto and a full esports section (CS2, VALORANT, LoL, Dota 2)
  • +Only takers pay fees, geopolitics markets are free, no deposit or withdrawal fees
  • +Every price is set by other traders on an order book, not by a bookmaker

Watch out for

  • −Blocked for trading in the US (US users go to the separate Polymarket US app)
  • −Close-only in the UK, France, Germany, Italy, Australia and more: you can exit positions but not open new ones
  • −Crypto only, and no bonus for new users
  • −Settled with the CFTC in 2022 over unregistered markets, and Nevada won an injunction in 2026

Games

PoliticsSportsEsportsCryptoEconomicsCulture

Deposit with

Crypto

Withdraw with

Crypto
Trust & reputation7.2
Payments & payouts8.4
Fairness5.0
Games9.8
Bonuses & value6.0
Design & UXNot scored yet

Polymarket hasn't published per-game house edges, and we haven't checked them on the site yet. We only list edges the site states itself or that we work out from its own odds and payouts.

The share of every bet the site keeps on average. Lower is better for you.

How popular is Polymarket?

Polymarket is too small or too new for public traffic estimates yet.

Polymarket in 2026

Polymarket is the biggest prediction market in the world. You buy Yes or No shares in an outcome, priced between $0 and $1 by other traders on an order book, and each winning share pays out $1 in stablecoins. It covers elections, sports, crypto prices, the economy and culture, and it has a full esports section with match, map and total markets on CS2, League of Legends, Dota 2 and VALORANT.

There are two Polymarkets now. polymarket.com is the international, crypto-based site. Polymarket US (polymarket.us) is a separate app for US residents, run by QCX LLC as a CFTC-regulated exchange and funded in dollars. Polymarket's own terms say trading is blocked in the United States on polymarket.com and send US users to the US app.

Who can use it

Check this before anything else. Polymarket's geoblock list has three levels. Fully blocked: Iran, Syria, Cuba, North Korea and occupied parts of Ukraine. Close-only, where you can sell what you hold but not open new positions: the US, the UK, France, Germany, Italy, Belgium, Poland, Australia, Brazil, Singapore, Taiwan, Thailand, Russia and four Canadian provinces (Ontario, British Columbia, Alberta, Quebec). The Netherlands, Ireland, Japan and South Korea are close-only on the website.

Bonus

Open the site with the button on this page to sign up through Betrefs: our referral tag betrefs is in the link, as there's no code field to type it into. Polymarket's referral programme pays the person who refers you a share of your fees; it doesn't give new users a bonus. The US app is different: a referred US user gets a $25 trading credit after a $10 deposit.

Fees

Only takers pay. The fee is shares x rate x price x (1 - price), so it's highest on a 50/50 market and close to nothing near 0 or $1. The rate depends on the category: 0.07 for crypto, 0.05 for sports, economics, culture and weather, 0.04 for finance, politics and tech, and geopolitics markets are free. Polymarket charges nothing for deposits or withdrawals, though an on-ramp like MoonPay or Coinbase takes its own cut.

Sign up on Polymarket18+ · terms set by Polymarket apply

Payments

Crypto in and out: Polygon and other EVM chains, Ethereum, Solana and Bitcoin, with positions settled in stablecoins.

Trust

Polymarket is run by Adventure One QSS Inc. In January 2022 the CFTC fined Blockratize Inc., the company behind Polymarket, $1.4 million for offering unregistered event markets to US users. In 2026 Nevada's Gaming Control Board sued Polymarket and the US app's operator, and won a restraining order in January and an injunction in May.

Sign up on Polymarket18+ · terms set by Polymarket apply

Verdict

The deepest prediction market there is, and the best one for betting on CS2 and VALORANT matches without a bookmaker's margin. But check your country first: across much of Europe, the UK, Australia and the US you can't open new positions on polymarket.com.

Polymarket FAQ

Is Polymarket legit?
We score Polymarket 7.3/10 in a provisional desk review.
What is the Polymarket promo code?
Use code betrefs when you sign up to join through Betrefs. Polymarket's own rewards: Fee-free maker trading, no deposit or withdrawal fees.
How do I withdraw from Polymarket?
Polymarket pays out in Crypto.