Understanding Kalshi Fees

How Kalshi calculates taker and maker fees, and why the fee curve is parabolic.

Overview Default Fee Schedule S&P 500 / NASDAQ-100 Fee Chart Estimator

Taker & Maker Fees for 100 Contracts

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

Contracts:

Capitola Research

Fee per Dollar Invested

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

Order size:

Capitola Research

The parabolic shape shows how fees peak at $0.50 (maximum uncertainty) and taper off toward $0.01 and $0.99 (near-certain outcomes). The per-dollar chart shows fees for a market order of the chosen size, where the number of contracts varies with price.