Kalshi’s minimum trading fee is typically $0.01 per side for a single contract, based on the fee schedule currently cited in public sources. For very small contracts, that floor can make the fee feel large relative to the trade size.

Quick Scoop

At around 50¢ prices , the fee is near its highest per contract, but it still usually rounds to only a few cents. For cheap contracts, the minimum floor dominates, so a 5¢ contract can still cost $0.01 in fee.

What That Means

  • Minimum fee: $0.01 per side.
  • Typical maximum per contract: about $0.02 in some public summaries, though the formula-based schedule can vary by market type and rounding.
  • Very small trades: the minimum fee matters most there, so the percentage cost can be high.

Simple Example

If you buy 1 contract at 5¢, the fee may still round up to $0.01 , so your fee is equal to 20% of the contract price. At 50¢, the fee is usually around $0.02 for 1 contract in public examples.

Note

Some third-party guides mention different current promotional or market- specific pricing, so the exact fee can depend on the market and the latest schedule. The safest plain-English answer is that the minimum fee is about one cent per side.

SUMMARY TL;DR: The minimum Kalshi fee is about $0.01 per side , and small trades can feel expensive because of that floor.