Calculate exact Kalshi fees for any contract price. Compare taker vs maker fees and find your true break-even.
Kalshi uses a unique fee formula: 7% × p × (1-p) for takers, and 1/4 of that for makers. This means fees peak at $0.50 contracts (the maximum uncertainty point) and decrease toward 0 and $1. Understanding this curve is essential for Kalshi traders — especially the massive savings from using limit orders.
Enter the contract price you're considering (e.g., $0.55 for a Yes contract).
Select Kalshi as the platform and choose your order type (taker for market orders, maker for limit orders).
Review the fee breakdown: fee per contract, effective cost, and effective payout.
Compare taker vs maker fees — switch between the two to see the savings from limit orders.
Check the break-even probability to know the minimum win rate you need to profit.
Buy 100 Yes contracts at $0.55 on Kalshi. Taker fee: ceil(0.07 × 0.55 × 0.45 × 100)/100 = $0.02/contract. Total cost: $57 ($55 + $2 fees). If the event occurs: receive $100, profit = $43. Break-even: 57%. Maker fee would be only $0.01/contract — saving $1 per 100 contracts.
Fee model: 7% × p × (1−p) per contract (taker)
Formula: ceil(0.07 × P × (1-P) × 100) / 100
Timing: Charged at time of trade
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