Execution cost
Kalshi slippage calculator
Estimate how much a worse fill changes your entry price, edge, and possible profit before you send a market order or cross a thin spread.
Kalshi slippage calculator quick answer: compare your expected entry price with the effective entry price you actually receive. The gap times contract count is the Slippage cost. If that cost eats the edge between your fair probability and the market price, the trade is probably not worth forcing.
Inputs
Cents you intended to pay
Average fill in cents
Each winning contract pays $1
Your estimate in percent
Manual estimate in dollars
Optional close price in cents
Estimate only. This page does not pull live Kalshi quotes, submit orders, save browser data, include taxes, or know the current fee schedule. Limit orders can reduce bad fills, but they do not guarantee execution. Not financial, tax, or legal advice.
Results
Slippage cost$0.00
Cost at intended price$0.00
Cost at actual fill$0.00
Edge before slippage0.0c
Edge after slippage0.0c
Profit if $1 settlement wins$0.00
PnL if closed at exit price$0.00