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Kalshi Fees Calculator

Calculate exactly how much Kalshi charges in trading fees for any order. See total cost, fee percentage, and your true break-even price after fees.

Contract Price (cents)

Price per contract, 1-99 cents

Number of Contracts

Kalshi Trading Fee:$1.74

Contract Cost:$55.00

Total Cost (contracts + fee):$56.74

Payout if Correct:$100.00

Profit if Correct:$43.26

Fee as % of Stake:3.16%

Break-Even Win Probability (after fees):56.74%

Fee formula

Kalshi's trading fee is 0.07 x contracts x price x (1 - price), rounded up to the next cent. Fees peak at 50 cents (1.75c per contract) and shrink toward the extremes. Settlement is always free.

This calculator is for informational and educational purposes only. Results should be verified with your sportsbook before placing any wagers. All betting carries risk. Full Disclaimer

How to Use This Calculator

1
Enter Contract Price: Input the price in cents you're paying per contract (1-99, e.g. 55)
2
Enter Number of Contracts: Input how many contracts you're buying (e.g. 100)
3
Review Fees: See the exact Kalshi trading fee, total cost, and how fees affect your break-even

Frequently Asked Questions

How much are Kalshi fees?

Kalshi charges a trading fee of 7% of your expected profit variance, calculated as 0.07 x contracts x price x (1 - price), rounded up to the next cent. For example, buying 100 contracts at 50 cents costs $1.75 in fees. Fees are highest at 50 cents and shrink toward 1 cent or 99 cents. There are no fees when a contract settles.

How are Kalshi trading fees calculated?

The formula is: fee = 0.07 x C x P x (1 - P), where C is the number of contracts and P is the price in dollars. A 100-contract order at 30 cents costs 0.07 x 100 x 0.30 x 0.70 = $1.47. The result is always rounded up to the next cent.

Does Kalshi charge fees when a contract settles or expires?

No. Kalshi only charges fees when you trade (buy or sell before settlement). If you hold a contract to settlement, you receive the full $1 per contract if you're right, with no settlement fee deducted.

Why are Kalshi fees higher at 50 cents?

The fee formula P x (1 - P) peaks at 50 cents because that's where the outcome is most uncertain. At 50c the fee is 1.75 cents per contract; at 90c or 10c it drops to 0.63 cents per contract. Trading contracts near the extremes costs less in fees.

Are Kalshi fees cheaper than sportsbook vig?

Usually, yes. A standard -110/-110 sportsbook line has about 4.5% vig built in. Kalshi's fee on a 50-cent contract works out to roughly 3.5% of your stake round-trip, and much less at prices away from 50 cents. Use our Vig Calculator to compare a specific line.