Fee Calculator

Compare trading fees, deposit costs, withdrawal fees, and interest across Kalshi, Polymarket, Crypto.com, FanDuel, and DraftKings side by side.

$
50¢
1% Long shot50/5099% Lock
Choosing Polymarket US over DraftKings Predictions saves$39.00
1
Polymarket US
2,000 contracts
$1.00
0.10% effective
2
Kalshi
2,000 contracts
$36.92
3.69% effective
3
Crypto.com / CDNA
2,000 contracts
$40.00
4.00% effective
4
FanDuel Predicts
2,000 contracts
$40.00
4.00% effective
5
DraftKings Predictions
2,000 contracts
$40.00
4.00% effective
Fee calculations based on published fee schedules as of 2026-02-26. Actual costs may vary due to rounding, minimum trade sizes, and spread costs not reflected here. Click any row to expand the full breakdown.

Why Do Platform Fees Matter?

Trading fees directly erode your edge. A 50¢ contract with a 2¢ fee effectively costs 52¢, shrinking your potential profit from 50¢ to 48¢ on a winning trade. For active traders placing dozens of contracts, the cumulative fee difference between platforms can amount to hundreds of dollars per month. This calculator uses live fee schedules from each platform so you can make an informed comparison.

How Are Prediction Market Fees Structured?

Each platform uses a different fee model. Kalshi uses a formula that scales with contract price. Polymarket charges a flat percentage. DraftKings and Crypto.com charge flat per-contract fees. FanDuel charges a percentage of the payout. Beyond trading fees, consider deposit fees (debit card surcharges), withdrawal fees (wire transfer costs), and interest credits (Kalshi pays APY on idle cash). The Odds Reference dashboard tracks live prices so you can identify where the same contract trades cheapest after fees.

How to Minimize Your Total Cost

Use free deposit methods (ACH or bank transfer) whenever possible. Avoid debit card deposits, which carry 1.5-3% surcharges. If you hold cash on Kalshi, the 3.75% interest offsets some fees. For high-volume traders, Kalshi's maker rate (0.0175 multiplier) is substantially cheaper than the taker rate. Placing limit orders instead of market orders can cut your trading costs by 75%.

Frequently Asked Questions

Which prediction market has the lowest fees?
It depends on the contract price and your deposit/withdrawal methods. Polymarket US charges a flat 0.1% taker fee with free crypto deposits. Kalshi uses a formula-based fee (roughly 7% of price times (1-price)) but offers interest on cash balances above $250. Use the calculator above to compare your specific scenario.
How do Kalshi trading fees work?
Kalshi charges a taker fee based on the formula: fee = 0.07 x price x (1 - price), rounded up to the nearest cent. This means fees are highest at 50¢ (about 1.75¢ per contract) and decrease toward the extremes. Maker orders (limit orders that add liquidity) pay a reduced rate of 0.0175 x price x (1-price).
Does Polymarket charge trading fees?
Polymarket US charges a 0.1% taker fee on filled orders. Maker orders (limit orders that sit on the book) are free. Deposits via ACH and wire are free. Polymarket does not charge withdrawal fees for crypto withdrawals.
Do prediction markets charge deposit fees?
Most platforms offer at least one free deposit method (ACH or bank transfer). Debit card deposits typically incur a 1.5-3% fee depending on the platform. Wire transfers are generally free on Kalshi and Polymarket. Check the calculator results for exact rates by method.
Does Kalshi pay interest on cash balances?
Yes. Kalshi pays 3.75% APY on uninvested cash balances above $250. This is calculated daily and credited to your account. Over a 30-day hold on a $1,000 balance, you earn approximately $3.08 in interest, which partially offsets trading fees.
How do DraftKings Predictions fees compare?
DraftKings Predictions charges a flat $0.02 per contract ($0.01 broker fee + $0.01 exchange fee). There are no settlement fees, and deposits via ACH, debit card, PayPal, Venmo, and Apple Pay are all free. Bank and PayPal withdrawals are also free.
What is a settlement fee?
A settlement fee is charged when a contract resolves (the event occurs or expires). Some platforms charge settlement fees only on winning (in-the-money) contracts. Currently, Kalshi, Polymarket US, FanDuel, and DraftKings do not charge settlement fees. Crypto.com charges settlement fees on certain contract tiers.
How should I factor fees into my trading strategy?
Fees directly reduce your edge. If a contract is priced at 50¢ and you estimate 55% true probability, your raw edge is 5%. After a 1.75¢ trading fee on a $1 contract, your effective edge drops to about 3.25%. For small edges, fee differences between platforms can determine whether a trade is +EV or -EV.

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