How Does Polymarket Make Money? Fee Structure and Revenue Analysis

Polymarket processed roughly $23.5 billion in trading volume during 2025. According to research firm Sacra, it generated approximately $0 in revenue for the year. That sounds like a problem. It is not. The zero-fee model was a deliberate strategy to capture market share, fund liquidity and build a platform institutional investors would back at billions of dollars. With Intercontinental Exchange's $2 billion commitment and a $15 billion valuation sought in 2026, the bet has paid off. The next question is how Polymarket turns volume into actual revenue.

Polymarket Spent Years Charging Zero Fees on Purpose

From its launch in 2020 through most of 2025, Polymarket charged no trading fees, no deposit fees and no withdrawal fees. Users paid only the small network gas fees inherent to the Polygon blockchain, plus whatever any third-party on-ramp like MoonPay or Coinbase charged to convert their fiat into USDC.

The economic logic was straightforward. Prediction markets only work if there is enough liquidity for traders to enter and exit positions cleanly. Liquidity attracts users, users attract more liquidity, and the platform that gets to scale first locks in a structural advantage. Polymarket was funded by venture capital and could afford to operate at a loss while building that base. Instead of charging users, it paid them. The platform offered roughly 4% holding rewards on certain positions to encourage market participation, which is the opposite of how most exchanges treat their users.

The strategy worked. Polymarket dominated the 2024 US election cycle, peaked at nearly 478,000 monthly active wallets in October 2025, and recorded $10.57 billion in trading volume in March 2026 alone.

Taker Fees Are Now Live But Only on Some Markets

The first cracks in the zero-fee policy appeared in January 2026, when Polymarket introduced taker fees on short-term crypto prediction markets. Sports markets followed in February. The full Fee Structure V2 rolled out at the end of March, applying taker fees across most categories while leaving geopolitics and world events fee-free, presumably because those markets generate enough organic volume that fees are not needed to fund liquidity provision.

The structure rewards passive over active participation. Makers, the traders who post limit orders and wait for someone to fill them, pay nothing and actually receive rebates funded by taker fees. Takers, the traders who fill those orders immediately at market price, pay the fees. The result is a pricing model designed to deepen the order book, with takers effectively subsidising the market makers whose orders they consume.

The Fee Curve Charges More for Genuinely Uncertain Markets

Polymarket's fee formula has a quirk that rewards extreme conviction trades and penalises balanced ones. The calculation is: shares × category rate × price × (1 − price). Fees peak at 50% probability, where the market is most uncertain, and decrease symmetrically as prices move toward 0 or 1.

A trade on a contract priced at $0.50 costs the maximum. A trade on a contract priced at $0.10 or $0.90 costs roughly a third of that. Near the extremes, around $0.01 or $0.99, fees often round down to zero because the minimum chargeable amount is 0.00001 USDC.

The mechanism is clever. Polymarket extracts the most revenue where trading is most active and price discovery is most valuable, and almost nothing where the market has already made up its mind. It also discourages spam trading at the edges of contracts, which keeps the order book clean.

Where the Money Will Come From Next

Trading fees are the obvious near-term revenue line. They are not the strategic prize. Polymarket spent $112 million buying QCEX to get CFTC exchange and clearinghouse licences for the US. The regulated US platform launching in 2026 is where the real fee structure starts paying. The filed US fee schedule is 30 basis points for takers and a 20 basis point maker rebate. That materially undercuts Kalshi's roughly 1% take rate.

Real-time prediction market data is the second revenue stream. ICE's $2 billion investment was explicitly designed to capture it. ICE plans to package Polymarket's event-driven probabilities as institutional data feeds alongside its existing financial market data. That repositions Polymarket as information infrastructure, not just a trading venue. Hedge funds, media organisations and corporate strategists already cite Polymarket probabilities as sentiment signals on everything from elections to Fed decisions.

The third source is a speculated POLY token. Polymarket has not officially launched one. The structure of its current operations strongly hints at where one would fit: subsidised liquidity, a large user base, and an obvious gap for a governance layer. A small transaction fee directed to POLY stakers would turn volume into revenue. Even a 0.5% effective take rate on current annual volume would produce over $100 million a year, before any growth.

Can the Model Sustain a $15 Billion Valuation?

Polymarket's valuation has roughly doubled in under two months. It went from $8 billion in March to a $15 billion target in April. That speed reflects ICE's involvement and the broader institutional shift toward prediction markets as a serious financial product. Justifying the number requires Polymarket to turn volume into recurring revenue at pace.

The infrastructure is in place. The fee structure has rolled out. The US platform is launching with a regulated fee schedule. The ICE data partnership is signed. The token framework, while still hypothetical, has clear paths to execution.

The harder question is competition. Kalshi is winning on regulated US volume. Regulatory friction outside the US is real. Polymarket also relies heavily on a few high-volume event cycles. Managing all of that will define whether the $15 billion valuation looks cheap or expensive in two years.

Polymarket spent five years building one of the most active prediction markets in the world without charging users a cent. The next five years are about turning that volume into a business.