Oddpool Research

Deep dives on prediction markets.

Kalshi, Polymarket, fee structure, market microstructure, and the trading patterns that move real money. Written by the team behind Oddpool.

Market Microstructure··7 min

How Prediction Market Fees Actually Work: Kalshi vs Polymarket

A trader's guide to fee structure on Kalshi and Polymarket. How fees scale, what makers and takers actually do, and the four ways to execute a position.