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Understanding Kalshi Fees

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

Kalshi Fee Estimator

General market fees per the official fee schedule (Feb 5, 2026). Taker: ceil(0.07 × C × P × (1−P)). Maker: ceil(0.0175 × C × P × (1−P)).

PriceTaker FeeTaker %Maker FeeMaker %Total Cost
$0.01$0.077.00%$0.022.00%$1.00
$0.05$0.346.80%$0.091.80%$5.00
$0.10$0.636.30%$0.161.60%$10.00
$0.15$0.906.00%$0.231.53%$15.00
$0.20$1.125.60%$0.281.40%$20.00
$0.25$1.325.28%$0.331.32%$25.00
$0.30$1.474.90%$0.371.23%$30.00
$0.35$1.604.57%$0.401.14%$35.00
$0.40$1.684.20%$0.421.05%$40.00
$0.45$1.743.87%$0.440.98%$45.00
$0.50$1.753.50%$0.440.88%$50.00
$0.55$1.743.16%$0.440.80%$55.00
$0.60$1.682.80%$0.420.70%$60.00
$0.65$1.602.46%$0.400.62%$65.00
$0.70$1.472.10%$0.370.53%$70.00
$0.75$1.321.76%$0.330.44%$75.00
$0.80$1.121.40%$0.280.35%$80.00
$0.85$0.901.06%$0.230.27%$85.00
$0.90$0.630.70%$0.160.18%$90.00
$0.95$0.340.36%$0.090.09%$95.00
$0.99$0.070.07%$0.020.02%$99.00