How much does Kalshi charge per trade?

Kalshi's trading fee is calculated per fill using the formula: round(0.07 × C × P × (1 − P)) cents per contract, where C is the contract count and P is the fill price. Fees max out around 1.75¢ on a 50¢ fill and drop toward zero at the extremes.

Are there deposit fees on Kalshi?

No. ACH deposits, debit card deposits, and wires are all free on the platform side (your bank may charge a wire fee).

Does Kalshi charge withdrawal fees?

ACH withdrawals are free. Wire withdrawals carry a small fee. Withdrawals typically arrive within 1–3 business days.

What's the maker vs taker fee on Kalshi?

Kalshi uses a single fee schedule — there is no maker rebate. The fee applies to whoever takes a fill at the matched price.

Are Kalshi fees cheaper than Polymarket?

Polymarket has no platform fee, so for raw cost Polymarket is cheaper. Kalshi's fee is the trade-off for full U.S. regulation, USD settlement, and 1099 tax reporting.

How are Kalshi fees taxed?

Fees reduce your net profit. Kalshi's 1099 reflects net realized gains, so you generally don't deduct fees separately — they're already netted in the reported figure. Confirm with a CPA.

Do Kalshi fees change for Florida residents?

Kalshi's fee schedule is set by the platform and applies according to its current terms. Florida traders may benefit from having no state income tax, but federal reporting can still apply.

Are there fees on Kalshi's Florida hurricane markets?

Same formula as any other market: round(0.07 × contracts × price × (1 − price)) cents per fill. Hurricane markets tend to trade near the extremes (very high or very low probability), where the fee compresses toward zero.

Are Kalshi fees cheaper on smaller trades?

The formula scales linearly with contract count and is a fixed cents-per-contract calculation, so smaller trades pay proportionally the same rate. There is no minimum ticket fee, so tiny trades stay cheap.

5 min read

Kalshi fees explained

Reviewed by

Catie Di Stefano — Founder & Editor-in-Chief

15 years in regulated online gamblingHeld a New Jersey DGE vendor licenseLaunched Hard Rock NJ online CRM program (2018)

Last updated September 7, 2026 · fact-checked against live Kalshi and Polymarket data

Short answer: Kalshi's trading fee follows a per-contract formula that maxes out near 1.75¢ on 50¢ fills. Deposits are free. ACH withdrawals are free.

Quick answer

Kalshi charges roughly 0–2% of contract price in trading fees, scaled so cheap longshots cost the least, and charges nothing for ACH deposits, ACH withdrawals, inactivity, or account maintenance.

Key takeaways

› Trading fee formula: round(0.07 × contracts × price × (1 − price)) cents per fill.
› Maximum fee per contract is ~1.75¢, hit at $0.50.
› Fees drop toward zero as price approaches $0.00 or $1.00.
› ACH and debit deposits free; ACH withdrawals free; wire withdrawals have a small fee.
› Reported net of fees on your 1099 at year-end.

Trade $25, get $25

Certain limitations apply. The offer is available to new users only, subject to the terms and conditions at kalshi.com/tc/500. 18+ only. Restrictions and eligibility requirements apply. Event contract trading involves significant risk and is not appropriate for everyone. Please carefully consider if it is appropriate for you in light of your personal financial circumstances. Kalshi products are not available in all jurisdictions. See kalshi.com/regulatory for more information.

The trading fee formula

Per fill, Kalshi charges: round(0.07 × C × P × (1 − P)) in cents, where C is contracts filled and P is the fill price between 0 and 1.

The shape: zero at the extremes ($0 or $1), peak at $0.50. That's why pros price-shop into mispricings — fees compress when you trade tails.

Worked examples

Trade	Cost	Fee
100 contracts @ $0.50	$50.00	~$1.75
100 contracts @ $0.10	$10.00	~$0.63
100 contracts @ $0.90	$90.00	~$0.63
1,000 contracts @ $0.50	$500.00	~$17.50

Deposit and withdrawal costs

ACH deposits: free, 1–3 business days.
Debit card deposits: free, instant.
Wire deposits: free on Kalshi's side (your bank may charge).
ACH withdrawals: free, 1–3 business days.
Wire withdrawals: small platform fee.

Kalshi fees vs Polymarket — cost comparison

Trade	Kalshi	Polymarket
$50 fill @ $0.50	~$0.88	$0 platform + ~1¢ spread
$500 fill @ $0.50	~$8.75	$0 platform + spread
$500 fill @ $0.10	~$3.15	$0 platform + spread
Deposit $500	Free ACH	Free debit/bank deposit
Withdraw $500	Free ACH	Off-ramp 0.5–2% + bridge

Kalshi's fee is transparent and USD-native. Polymarket's zero platform fee is only truly zero if you already hold USD in the U.S. app — on/off-ramp costs are the real hidden line.

Florida angle

Florida has no state income tax, so the only tax on Kalshi gains is federal — reported on the 1099 Kalshi issues automatically. Free ACH deposits and withdrawals make Kalshi cheaper end-to-end for a Florida trader than any crypto-based alternative once on-ramp costs are counted.

Welcome offer · Kalshi

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Play responsibly

Prediction markets are real-money trading and you can lose your full stake. We recommend 21+. If trading stops feeling fun, call 1-800-GAMBLER or text 988.

Reviewed by Catie Di Stefano. Every guide follows our editorial standards & review methodology. Affiliate links are disclosed under our affiliate disclosure.