Prediction Market Fees: Kalshi, Polymarket, Robinhood & Coinbase
Prediction market app fees, side by side
Fee schedules we’ve verified: Polymarket US, Kalshi, Gemini Predictions, FanDuel Predicts, DraftKings Predictions and OG Predictions.
| App | Trading fees | Deposits and withdrawals |
|---|---|---|
| Polymarket US | Up to 1.74% per trade. Formula-based: highest near 50¢, lower toward the edges; makers earn a rebate of up to 0.31%. | No deposit or withdrawal fees listed; ACH 1–3 business days, card and Apple Pay instant. |
| Kalshi | 0.07–1.75% per trade. Formula-based: highest near 50¢, lower toward the edges; resting (maker) orders pay less or nothing. | ACH free; 2% fee on debit card deposits. |
| Gemini Predictions | 0–1.75% per trade for takers, 0–0.44% for makers. Formula-based: highest near 50¢, lower toward the edges. | Free ACH and wire deposits; debit card 3.49%, PayPal 2.5%. Free ACH withdrawals; wire $25. |
| FanDuel Predicts | 2% of the potential payout, charged at checkout and on early cash-out; 0% maker. | Free ACH; debit card and online banking. |
| DraftKings Predictions | Up to 2¢ per contract per side, all-in: $0.02 between 30¢ and 94¢, less near the edges. | No withdrawal fees. Online banking, debit card, Apple Pay, Venmo, Cash App and PayPal; debit and Apple Pay withdrawals in under 1 business day, others 1–2 days (check 7–14). |
| OG Predictions | Most markets up to 1.75% per trade (formula-based, highest near 50¢; resting orders pay a quarter); crypto, FX, commodity and index markets $0.02 per contract. Nothing at settlement. | Banking being re-verified |
Source: US prediction market apps compared · Fees checked Oct 2, 2026 (Kalshi’s Sep 22, 2026)
Prediction market fees have converged. Kalshi’s formula, 0.07 × contracts × price × (1 − price), is now the trading fee at Polymarket US (0.0695), Gemini Predictions, OG and Crypto.com, so on most US apps a trade costs at most about 1.75¢ a contract, at a 50¢ price, and less toward 1¢ and 99¢. The exceptions are flat fees of up to 2¢ a contract at FanDuel Predicts, DraftKings Predictions, Fanatics Markets and Robinhood, a 1¢ exchange fee at ForecastEx, and PredictIt’s 10% of profits.
We read every schedule below on the app’s own fee page on October 2, 2026 (Kalshi’s on September 23, 2026: its schedule refused our request on October 2), and worked every example with the same formulas our fee calculators use.
Key stats to know
- Most apps cost about the same: $100 on a 76¢ favorite costs $1.66 on Polymarket US and $1.68 on Kalshi, Gemini, OG or Crypto.com.
- Flat fees cost more, most of all on longshots: $100 of 10¢ contracts costs $20.00 in fees on FanDuel and $19.00 on Robinhood, against $6.30 on Kalshi.
- Cheapest per contract: ForecastEx, through Interactive Brokers, charges a 1¢ exchange fee and no commission.
- Only charged when you win: PredictIt takes 10% of the profit on a winning trade and nothing on a loss. Since September 23, 2026 it no longer charges 5% to withdraw.
A note on terms: a taker order fills right away against an order already on the book; a maker order rests on the book until someone else fills it. Apps charge makers less, nothing, or pay them a rebate, because resting orders are what everyone else trades against.
Every app’s fee schedule
The trading fee and how it’s charged, from each app’s published schedule. “Most per contract” is the highest fee on one contract, at a 50¢ price for the formula-based apps.
| App | How the trading fee works | Most per contract | Resting (maker) orders |
|---|---|---|---|
| Kalshi | 0.07 × contracts × price × (1 − price), rounded up to the cent; some markets charge less. No settlement fee. | 1.75¢ | Pay less (0.0175 rate) or nothing, by market |
| Polymarket US | 0.0695 × contracts × price × (1 − price), rounded to the nearest cent. Takers with $250,000+ of last month’s taker volume get 10–50% back. | 1.74¢ | Earn a rebate (0.0125 rate, up to 0.31¢) |
| Gemini Predictions | 0.07 × contracts × price × (1 − price), rounded up to the cent, on contracts listed since March 18, 2026. | 1.75¢ | Pay a quarter of the rate (0.0175) |
| OG Predictions | 0.07 × contracts × price × (1 − price) on most markets; $0.02 a contract on crypto, FX, commodity and index markets. To open or close early; waived at settlement. | 1.75¢ (2¢) | Pay a quarter of the rate (0.0175) |
| Crypto.com | 0.07 × contracts × price × (1 − price) on sports and prediction markets; $0.02 a contract on crypto, FX, commodity and index markets. Waived at settlement. | 1.75¢ (2¢) | Pay a quarter of the rate (0.0175) |
| Robinhood | A commission of 10% × price × (1 − price) a contract (5% with Gold), capped at 1¢, plus the exchange’s fee of up to 1¢. When you open and when you close. | 2¢ | Same |
| FanDuel Predicts | 2¢ per dollar of potential payout (2¢ a contract) at checkout, and the same again to cash out early. | 2¢ | Same |
| DraftKings Predictions | Per contract by price, each side: 1¢ or 2¢ on CME markets, up to 2¢ on DKeX and Crypto.com markets; rounded up to the cent. | 2¢ | Same |
| Fanatics Markets | $0.00034 to $0.02 a contract by price ($0.02 from 20¢ to 80¢), on every matched order; rounded up to the cent. | 2¢ | Same |
| ForecastEx (Interactive Brokers) | No commission; ForecastEx’s exchange fee of $0.01 a contract. | 1¢ | Same |
| PredictIt | 10% of the profit on winning trades. No withdrawal fee since September 23, 2026. | None to trade | Same |
| Polymarket international | A category rate × contracts × price × (1 − price): crypto 0.07, sports and most others 0.05, politics, finance, tech and mentions 0.04, geopolitics free. Not open to US users. | 1.75¢ | Pay nothing; share a rebate pool |
| Coinbase | No published schedule: the fee, which covers the exchange and Coinbase’s brokerage, varies by market and is shown in the order preview. | Varies | Varies |
Deposit and withdrawal costs for each app are in the comparison at the top of this page.
What the table doesn’t capture
- The spread. A thin market’s gap between the best bid and ask can cost more than any fee. A 3¢ spread on a 50¢ contract is a bigger cost than Kalshi’s 1.75¢ fee.
- Slippage. A large order walks up the book and fills at worse prices.
- Selling early. Most apps charge again when you sell before settlement; FanDuel charges its 2¢ again to cash out.
- Funding. Card deposits can cost 2–3.5%, which is more than a year of light trading fees.
How the fee models work
The formula (Kalshi, Polymarket US, Gemini, OG, Crypto.com): the fee is a rate × contracts × price × (1 − price). It’s largest when the outcome is a coin flip and shrinks as the price nears 1¢ or 99¢. On Kalshi, 100 contracts at 50¢ cost $1.75 in fees; 100 at 90¢ cost $0.63. As a share of what you spend, that’s 3.5% at 50¢ and 0.7% at 90¢.
Flat per contract (FanDuel, DraftKings, Fanatics, Robinhood, ForecastEx): a set amount on every contract, mostly 1–2¢. Simple to predict, but a 10¢ longshot pays the same 2¢ as a 50¢ coin flip, so as a share of the stake it costs far more at the edges.
A share of profits (PredictIt): nothing to buy or sell; 10% of the profit when a trade wins. It’s the cheapest app when you lose and among the dearest when you win.
Rebates: Polymarket US pays resting orders a rebate on every fill and, since October 1, 2026, gives takers with more than $250,000 of monthly volume 10%, 25% or 50% of their fees back. Kalshi charges resting orders less or nothing, and runs liquidity programs on selected markets.
Quirks worth knowing
- Kalshi charges less on some markets: its filed schedule gives the S&P 500 and Nasdaq-100 markets half the usual rate (0.035).
- Crypto.com’s $10 contracts pay a $0.10 exchange fee when they settle in the money; its $1 contracts settle free.
- Rounding matters on small orders. Kalshi rounds each fill up to the cent but carries the overpayment across an order’s fills and refunds it, so an order’s total fee converges on the formula. Polymarket US rounds each fill to the nearest cent, ties to the even cent.
Fee example: $100 on a favorite
You buy 131 contracts at 76¢ ($99.56) and hold them to settlement. Here’s the fee on each app, and what you keep if the favorite wins.
| App | Fees | Profit if it wins, after fees | Fees as a share of the profit |
|---|---|---|---|
| Polymarket international (sports; not for US users) | $1.19 | $30.25 | 3.8% |
| ForecastEx (Interactive Brokers) | $1.31 | $30.13 | 4.2% |
| Polymarket US | $1.66 | $29.78 | 5.3% |
| OG Predictions | $1.67 | $29.77 | 5.3% |
| Crypto.com | $1.67 | $29.77 | 5.3% |
| Kalshi | $1.68 | $29.76 | 5.3% |
| Gemini Predictions | $1.68 | $29.76 | 5.3% |
| Robinhood | $2.62 | $28.82 | 8.3% |
| FanDuel Predicts | $2.62 | $28.82 | 8.3% |
| DraftKings Predictions (CME markets) | $2.62 | $28.82 | 8.3% |
| Fanatics Markets | $2.62 | $28.82 | 8.3% |
| PredictIt | $3.14 (on the win) | $28.30 | 10.0% |
Five apps charge within 2¢ of each other, because they use the same formula. The flat 2¢-a-contract apps cost about 60% more on this trade, and PredictIt costs nothing unless you win.
Coin flip and longshot
At a 48¢ price, 208 contracts ($99.84), the formula is near its peak, so the gap to the flat-fee apps narrows:
| App | Fees | Profit if it wins, after fees | Fees as a share of the profit |
|---|---|---|---|
| ForecastEx (Interactive Brokers) | $2.08 | $106.08 | 1.9% |
| Polymarket international (sports; not for US users) | $2.60 | $105.56 | 2.4% |
| Polymarket US | $3.61 | $104.55 | 3.3% |
| OG Predictions | $3.63 | $104.53 | 3.4% |
| Crypto.com | $3.63 | $104.53 | 3.4% |
| Kalshi | $3.64 | $104.52 | 3.4% |
| Gemini Predictions | $3.64 | $104.52 | 3.4% |
| Robinhood | $4.16 | $104.00 | 3.8% |
| FanDuel Predicts | $4.16 | $104.00 | 3.8% |
| DraftKings Predictions (CME markets) | $4.16 | $104.00 | 3.8% |
| Fanatics Markets | $4.16 | $104.00 | 3.8% |
| PredictIt | $10.82 (on the win) | $97.34 | 10.0% |
On a 10¢ longshot, 1000 contracts ($100.00), the formula shrinks and flat fees don’t:
| App | Fees | Profit if it wins, after fees | Fees as a share of the profit |
|---|---|---|---|
| Polymarket international (sports; not for US users) | $4.50 | $895.50 | 0.5% |
| Polymarket US | $6.26 | $893.74 | 0.7% |
| Kalshi | $6.30 | $893.70 | 0.7% |
| Gemini Predictions | $6.30 | $893.70 | 0.7% |
| OG Predictions | $6.30 | $893.70 | 0.7% |
| Crypto.com | $6.30 | $893.70 | 0.7% |
| DraftKings Predictions (CME markets) | $10.00 | $890.00 | 1.1% |
| ForecastEx (Interactive Brokers) | $10.00 | $890.00 | 1.1% |
| Fanatics Markets | $16.00 | $884.00 | 1.8% |
| Robinhood | $19.00 | $881.00 | 2.1% |
| FanDuel Predicts | $20.00 | $880.00 | 2.2% |
| PredictIt | $90.00 (on the win) | $810.00 | 10.0% |
PredictIt’s 10% of profit is the costliest on a winning longshot, because the profit is large. Among the per-contract apps, FanDuel and Robinhood cost three times what Kalshi does here.
Large position fees
At $10,000 on a 76¢ favorite, 13,157 contracts ($9,999.32), fees scale with the trade; none of these apps discounts a single large order, though Polymarket US now rebates heavy monthly takers.
| App | Fees | Profit if it wins, after fees | Fees as a share of the profit |
|---|---|---|---|
| Polymarket international (sports; not for US users) | $119.99 | $3,037.69 | 3.8% |
| ForecastEx (Interactive Brokers) | $131.57 | $3,026.11 | 4.2% |
| Polymarket US | $166.79 | $2,990.89 | 5.3% |
| Kalshi | $167.99 | $2,989.69 | 5.3% |
| Gemini Predictions | $167.99 | $2,989.69 | 5.3% |
| OG Predictions | $167.99 | $2,989.69 | 5.3% |
| Crypto.com | $167.99 | $2,989.69 | 5.3% |
| Robinhood | $263.14 | $2,894.54 | 8.3% |
| FanDuel Predicts | $263.14 | $2,894.54 | 8.3% |
| DraftKings Predictions (CME markets) | $263.14 | $2,894.54 | 8.3% |
| Fanatics Markets | $263.14 | $2,894.54 | 8.3% |
| PredictIt | $315.77 (on the win) | $2,841.91 | 10.0% |
Real-world case study: the 50% maker fee
In June 2025, Rufus Peabody documented what happens when Kalshi’s fee structure meets low-probability markets. He placed $1,000 in maker orders at $0.02 per contract (+4900 odds) on Tommy Fleetwood to win a golf tournament.
The result: 12.52% average fees across his fills, with some individual contract matches incurring 50% fees.
Here’s why: Kalshi’s maker fee at the time was a flat $0.0025 per contract, and the exchange rounded up on every fill. When Peabody was matched on a single contract at $0.02, his fee rounded from $0.0025 to $0.01, a 50% charge on that fill.
Kalshi has since changed both halves of that. Maker fees now scale with the price, like taker fees, and an order’s rounding is now tracked across all its fills, with the overpayment refunded, so a trickle of one-contract fills no longer pays a full cent each. The lesson still holds on apps that round each fill up: on longshots and small fills, check the fee in the order preview.
The maker/taker distinction comes from how the order book matches trades. We explain it in our guide to how prediction market order books work.
The turnover multiplier
The examples above are one trade. Fees add up with every position you open and close.
Take a trader who buys $100,000 of contracts in a year, mostly around 76¢, and holds them to settlement:
- Formula apps (Kalshi, Polymarket US, Gemini, OG, Crypto.com): about $1,679.90 in fees.
- Flat 2¢ apps (FanDuel, DraftKings, Fanatics, Robinhood): about $2,631.40.
- ForecastEx: about $1,315.70.
Selling early doubles the fee
Every app here except PredictIt charges to open a position, and almost all charge again to sell before settlement, so a trader who exits every position early pays roughly twice the figures above. Settling is free nearly everywhere (PredictIt’s profit fee and Crypto.com’s $10 contracts are the exceptions), so holding to the end is the cheaper default; selling is worth it when the price has moved enough to cover the second fee.
Where fees go from here
Early in 2026 the apps priced trading in very different ways. Now Kalshi’s formula is the industry’s default: Polymarket US, Gemini, OG and Crypto.com all charge it, at the same 0.07 rate or just under. Competition has moved to the edges of the schedule: rebates for resting orders, volume rebates for the heaviest takers (Polymarket US, from October 1, 2026), and the funding costs around the trade, where PredictIt dropped its 5% withdrawal fee in September.
The flat-fee apps, mostly the sportsbook brands, are the outliers. Their 2¢ a contract is simple, but it costs more than the formula at almost every price, and much more on longshots and heavy favorites.
Sources
Every figure comes from the app’s own published schedule, read on October 2, 2026 unless noted. We recheck them every few weeks and date the page when anything changes.
- “Kalshi Fee Schedule.” Kalshi. Read September 23, 2026. kalshi.com/docs/kalshi-fee-schedule.pdf
- “Fee Rounding.” Kalshi API documentation. docs.kalshi.com/getting_started/fee_rounding
- “Fees & Rebates.” Polymarket US. docs.polymarket.us/fees
- “Trading Fees.” Polymarket. docs.polymarket.com/trading/fees
- “Prediction Markets Fees.” Gemini. gemini.com/fees/predictions
- “Fees & Limits.” OG. help.og.com
- “Prediction Trading.” Crypto.com Help Center. help.crypto.com
- “Robinhood event contracts.” Robinhood Support. robinhood.com
- “How do payouts work.” FanDuel Predicts. fanduel.com/predicts
- “Fee Disclosure.” DraftKings Predictions. draftkings.com
- “Fee Disclosures (Effective September 2, 2026).” Fanatics Markets. fanaticsmarkets.com/legal/fee-schedule
- “Event Contracts Commissions.” Interactive Brokers. interactivebrokers.com
- “PredictIt Removes Withdrawal Fees and Introduces Simplified Fee Structure.” PredictIt, September 23, 2026. GlobeNewswire
- “Prediction markets.” Coinbase Help. help.coinbase.com
- Peabody, Rufus. Kalshi maker fee analysis. X, June 16, 2025. x.com/RufusPeabody
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