Polymarket.com

What is the "Matched Betting Value" listed above? This is the amount of profit that you can make from the sign-up offer through a technique called matched betting. In short, it is a mathematical approach to sports betting that enables profit by hedging your bets. This allows you to cover all possible outcomes and secure a profit no matter what happens in the game. This is different from gambling because there is no risk of losing. Learn more in our What Is Matched Betting guide.

Polymarket.com is the global Polymarket exchange. You trade shares on sports, politics, crypto, and other real-world events. Each share pays $1 if its outcome happens and $0 if it doesn't. The price in between, from 1¢ to 99¢, is the market's implied probability.

It does not accept new trades from the United States. Traders in the US use Polymarket US, a separate CFTC-regulated exchange with its own order book, fees, and settlement rules. Because the two order books are separate, the same game often trades at different prices, with different depth, on each.

How Polymarket Works

Polymarket is an order book. Traders post the prices they will buy and sell at, and a trade happens when a buy meets a sell. If a team's Yes share trades at 62¢, the market gives that team about a 62% chance to win. You can sell a position before the event ends at whatever the market pays.

Balances are held in pUSD, a USDC-backed token on the Polygon blockchain.

Markets resolve through the UMA Optimistic Oracle. Someone proposes the result and posts a $750 bond. Anyone can dispute it during a 2-hour challenge window, and a disputed result goes to UMA's voting process. Polymarket.com's help center explains this in How are prediction markets resolved.

Where Is Polymarket.com Legal?

Polymarket.com restricts trading by location at three levels:

• Blocked completely: the OFAC-sanctioned jurisdictions (Iran, Syria, Cuba, North Korea, and the Crimea, Donetsk, and Luhansk regions of Ukraine). You cannot open or close positions.
• Close-only: you can close existing positions but cannot open new ones. This covers the United States, the United Kingdom, France, Germany, Italy, Belgium, Poland, Australia, New Zealand, Singapore, Taiwan, Thailand, Brazil, Russia, and the Canadian provinces of Ontario, Alberta, British Columbia, and Quebec, among others.
• Close-only on the website: Ireland, Japan, the Netherlands, South Korea, and Malta (sports only). The website blocks new positions, but the API does not.

Is Polymarket.com Legal in Canada?

Polymarket.com accepts trades from most of Canada. Ontario, Alberta, British Columbia, and Quebec are close-only, so traders located there can close existing positions but cannot open new ones. Traders in the other provinces and territories, including Manitoba, Saskatchewan, Nova Scotia, and New Brunswick, can trade. Polymarket US is not available in Canada.

Availability of sportsbooks and promotions varies by state and may change. Verify current offerings before signing up.

Deposits and Withdrawals

You fund Polymarket.com with crypto or a card. Crypto deposits convert to pUSD when they arrive. Card, Apple Pay, and Google Pay deposits go through third-party on-ramps such as MoonPay, which charge their own processing fee. Polymarket.com does not charge to deposit or withdraw USDC.

Withdrawals go out as crypto to a wallet or exchange you choose. To get dollars, send them to an exchange such as Coinbase and sell there.

Polymarket.com Fees

Polymarket.com charges takers a fee that depends on the market's category. Makers pay nothing.

Fee = rate × shares × price × (1 - price)

Taker Rates by Category

• Sports: 0.05, up to $1.25 per 100 shares at 50¢
• Crypto: 0.07
• Politics, finance, tech, and mentions: 0.04
• Economics, culture, weather, and other: 0.05
• Geopolitics: no fee

Example: you buy 100 shares of a sports market at 60¢. The fee is 0.05 × 100 × 0.60 × 0.40 = $1.20, so the trade costs $61.20 and pays $100 if it wins. That is a profit of $38.80, about -158 in American odds, against -150 before the fee. The same trade on Polymarket US costs $61.67.

Each day, 15% of sports taker fees go back to makers through the Maker Rebates Program. The Polymarket.com fees page has the full tables. To compare the same trade on Polymarket.com, Polymarket US, and Kalshi, use the Prediction Market Comparison tool.

How Polymarket.com Settles Sports Markets

Polymarket.com settles several common cases differently from Polymarket US and most sportsbooks:

• Player doesn't play: NFL, MLB hitter, soccer, and WNBA props settle No or Under if the player is inactive or doesn't play. MLB pitcher props settle at 50¢ if the pitcher doesn't start.
• Postponed games: markets stay open until the game is played.
• Canceled games: 50¢ per share. In soccer, the team-win markets settle No and the draw settles Yes.
• Ties: an NFL moneyline tie settles at 50¢. A spread that lands exactly on the number settles to the underdog in the NFL, MLB, and WNBA.
• Soccer: results count 90 minutes plus stoppage time only.

If you hedge a Polymarket.com Over against a sportsbook Under, a player who sits out loses your Over while the sportsbook voids your Under.

Our Kalshi and Polymarket market rules guide compares these rules with Polymarket US, Kalshi, and sportsbooks.

Combos

Polymarket.com offers combos on moneylines, spreads, and totals only. Player props cannot be added to a combo.

• Not for US traders: the US is close-only. Use Polymarket US instead.
• Check your province: Ontario, Alberta, British Columbia, and Quebec are close-only.
• Your balance is crypto: funds sit in pUSD, and card on-ramps charge a processing fee.
• Results can be disputed: a proposed result can be challenged for 2 hours before the market settles.

Polymarket.com has a concierge program for traders who trade about $250,000 a month. Benefits include a dedicated host, the ability to create custom markets, and tickets to events and other experiences. Email vip@darkhorseodds.com and we can help you get started.

Every trader also earns a taker fee rebate based on 30-day weighted volume, paid daily. Sports trades count at full weight.

Taker Rebate Tiers

• Bronze, $2,000: 3%
• Silver, $20,000: 8%
• Gold, $200,000: 18%
• Platinum, $1,000,000: 32%
• Diamond, $4,000,000: 44%
• Obsidian, $10,000,000: 50%

Each sportsbook has its own House Rules which determine how a bet is graded. These rules cover unlikely events, such as what happens to your bet when a game is canceled.

Usually, the different house rules across sportsbooks do not have an impact on matched betting. However, in Major League Baseball (MLB), there are notable exceptions. A simple example is when a game is postponed due to weather. Read our House Rules Comparison guide to learn more.

For MLB it is also important to understand what defines Action.