Glossary › Taker fee
Checked September 25, 2026 · 4 sources · plain-English definition, not financial advice
Taker fee: The trading fee Kalshi charges on an order that matches right away against resting orders; it varies with price, contract count and series.
Kalshi's help center says trading fees are only charged for orders that are immediately matched with orders sitting on the order book, which is the taker side of a trade. Kalshi describes the charge as a transaction fee on the expected earnings on the contract, set out with its math in the fee schedule, and says some markets carry different fees around special events such as an election or a large championship.
The fee structure is set per series. Kalshi's API documentation says a series' fee type points to a table in the fee schedule (quadratic for the general trading fee table, flat for the specific trading fee table) and that a fee multiplier is applied to the calculation. Because it is charged on expected earnings, the fee is not a fixed percentage of what you spend; Kalshi View's fee calculator works it out for any price and order size.
Fees are rounded. Kalshi's API documentation says the fee is rounded up to the nearest $0.000001 and a rounding fee brings balances back to whole cents for non-direct members, tracked across all fills of one order. What to check: the fee on the order ticket, shown by the i icon next to "You're buying", before you submit.
Kalshi fee calculator · Kalshi fees explained · Kalshi odds converter
Checked September 25, 2026. Kalshi changes fees, rules, funding options and limits; the market's rules, the order ticket and Kalshi's help center are the final word.
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