Understanding Polymarket Fees

How Polymarket calculates taker fees on crypto and sports markets, and how they fund the maker rebates program.

Taker Fees for 100 Shares

Fee in USDC and effective fee as % of trade cost at each share price from $0.01 to $0.99

Capitola Labs

Fee per Dollar Invested

Fee for a $100 market order at each share price from $0.01 to $0.99

$
Capitola Labs

Crypto markets use exponent 2, giving a steeper curve that concentrates fees around the 50¢ midpoint. The maximum effective rate is 1.56% at P = $0.50. Fees taper sharply toward the extremes. The per-dollar chart shows fees for a market order of the chosen size, where the number of shares varies with price.