Kalshi Fee Calculator

Kalshi's fee is small per contract but compounds fast on a busy strategy — and because it's highest at mid-range prices, a trade that looks green can settle red. Enter a trade below to see the exact fee, profit/loss, breakeven and ROI. These are the same figures our trading engine uses to decide whether an edge is real, not an approximation.

How Kalshi trading fees work

Kalshi charges a per-trade taker fee of ceil(7% × contracts × price × (1 − price)), with price in dollars. The price × (1 − price) term peaks at 50¢ and falls toward zero at the extremes, so a mid-range market is the most expensive to trade and a deep-in/out-of-the-money one is nearly free. The result is always rounded up to the next whole cent. S&P 500 and Nasdaq-100 series use a halved multiplier, and a handful of series charge no fees at all — Kalshi's fee schedule lists the exceptions.

Maker vs. taker: a taker order crosses the spread for an immediate fill and pays the full fee. A maker order rests on the order book — and pays no fee at all on most Kalshi markets; some high-volume series (major sports games, CPI, Fed meetings) charge makers a quarter of the taker rate. This calculator models a maker fill conservatively at 50% of the taker fee, so your real maker costs will usually be lower than shown. A typical scalp takes on entry (to get filled fast) and makes on exit — the default above.

There are no monthly platform fees and no fees for bank deposits or withdrawals — you only pay when you trade. For the bigger picture, see Kalshi fees explained and our guide to making money on Kalshi.

Frequently asked questions

How much are Kalshi's trading fees?
The taker fee is ceil(7% × contracts × price × (1 − price)), price in dollars. It's highest around 50¢ and falls toward zero near 1¢ or 99¢. One contract at 50¢ costs about 2¢; it scales with the number of contracts. S&P 500 and Nasdaq-100 series use a halved multiplier.

Do maker and taker orders pay different Kalshi fees?
Yes — a taker order that crosses the spread pays the full fee. A maker order that rests on the book pays nothing on most Kalshi markets; some high-volume series (major sports, CPI, Fed) charge makers a quarter of the taker rate. The calculator's maker option is a conservative 50% model, so real maker costs are usually lower than shown.

Does Kalshi charge deposit, withdrawal or monthly fees?
No. No monthly platform fees and no bank deposit/withdrawal fees — only the per-trade fee when you trade.

What is the breakeven price on a Kalshi trade?
The lowest price you can sell at and still cover both the entry and exit fees. Below it, fees turn an apparent gain into a net loss. The calculator computes it for your exact inputs.

Related: What is Kalshi — fees & costs · How to make money on Kalshi · All guides