Unjuiced

Prediction market fees

Kalshi, Polymarket, Polymarket US, Novig and OG charge a taker fee of rate × price × (1 − price) when your order takes a price already on the book. The rate depends on the venue and the market, and it is biggest on a 50¢ contract. ProphetX takes a cut of winnings instead. Here is what each one charges today, by sport and category.

Checked every morning against each venue’s fee schedule. Rates last changed November 1, 2026. Venues change their fees, so check the venue before a big order.

Taker fees by sport and category

Each cell is the rate in the fee formula and the most it costs on one $1 contract (at 50¢). A maker or limit order pays less, usually nothing. A dash means the venue doesn’t list that market.

MarketKalshiPolymarketPolymarket USNovigOGProphetX
Sports
NFL0.07Up to 1.75¢0.03Up to 0.75¢0.095Up to 2.38¢Free pre-game0.06 live · up to 1.5¢0.07Up to 1.75¢2% of winningsCommission
College football0.07Up to 1.75¢0.03Up to 0.75¢0.095Up to 2.38¢Free pre-game0.06 live · up to 1.5¢0.07Up to 1.75¢2% of winningsCommission
NBA0.07Up to 1.75¢0.05Up to 1.25¢0.095Up to 2.38¢Free pre-game0.06 live · up to 1.5¢0.07Up to 1.75¢2% of winningsCommission
College basketball0.07Up to 1.75¢0.05Up to 1.25¢0.095Up to 2.38¢Free pre-game0.06 live · up to 1.5¢0.07Up to 1.75¢2% of winningsCommission
WNBA0.07Up to 1.75¢0.05Up to 1.25¢0.095Up to 2.38¢Free pre-game0.06 live · up to 1.5¢0.07Up to 1.75¢2% of winningsCommission
MLB0.07Up to 1.75¢0.05Up to 1.25¢0.095Up to 2.38¢Free pre-game0.06 live · up to 1.5¢0.07Up to 1.75¢2% of winningsCommission
NHL0.07Up to 1.75¢0.05Up to 1.25¢0.095Up to 2.38¢Free pre-game0.06 live · up to 1.5¢0.07Up to 1.75¢0.035Up to 0.88¢
Soccer0.07Up to 1.75¢0.05Up to 1.25¢0.095Up to 2.38¢Free pre-game0.06 live · up to 1.5¢0.07Up to 1.75¢2% of winningsCommission
Tennis0.07Up to 1.75¢0.05Up to 1.25¢0.095Up to 2.38¢Free pre-game0.06 live · up to 1.5¢0.07Up to 1.75¢2% of winningsCommission
UFC / MMA0.07Up to 1.75¢0.05Up to 1.25¢0.095Up to 2.38¢Free pre-game0.06 live · up to 1.5¢0.07Up to 1.75¢2% of winningsCommission
Golf0.07Up to 1.75¢0.05Up to 1.25¢0.095Up to 2.38¢Free pre-game0.06 live · up to 1.5¢0.07Up to 1.75¢2% of winningsCommission
Esports0.07Up to 1.75¢0.05Up to 1.25¢0.095Up to 2.38¢Free pre-game0.06 live · up to 1.5¢0.07Up to 1.75¢2% of winningsCommission
Politics, economics and more
Politics0.07Up to 1.75¢0.04Up to 1¢0.095Up to 2.38¢Not listedNot listedNot listed
Economics0.07Up to 1.75¢0.05Up to 1.25¢0.095Up to 2.38¢Not listedNot listedNot listed
Finance0.07Up to 1.75¢0.04Up to 1¢0.095Up to 2.38¢Not listedNot listedNot listed
Crypto0.07Up to 1.75¢0.07Up to 1.75¢0.095Up to 2.38¢Not listedNot listedNot listed
Weather0.07Up to 1.75¢0.05Up to 1.25¢0.095Up to 2.38¢Not listedNot listedNot listed
Culture0.07Up to 1.75¢0.05Up to 1.25¢0.095Up to 2.38¢Not listedNot listedNot listed
Mentions0.07Up to 1.75¢0.04Up to 1¢0.095Up to 2.38¢Not listedNot listedNot listed
Tech0.07Up to 1.75¢0.04Up to 1¢0.095Up to 2.38¢Not listedNot listedNot listed
Geopolitics0.07Up to 1.75¢No fee0.095Up to 2.38¢Not listedNot listedNot listed
Other0.07Up to 1.75¢0.05Up to 1.25¢0.095Up to 2.38¢Not listedNot listedNot listed

How the fee works

The fee per contract is rate × price × (1 − price). Price is what the contract costs in dollars, so a 50¢ contract on a 0.07 market costs 0.07 × 0.5 × 0.5 = 1.75¢ in fees. The fee shrinks toward the ends: the same contract at 10¢ or 90¢ costs 0.63¢.

It’s charged on the order that takes a price already on the book (a market order, or a limit order that fills right away). An order that rests and fills later is a maker order, and pays a smaller fee or none.

On a close game the fee is worth a point or two of American odds: a 50¢ Kalshi contract (+100 before fees) costs about −107 after its fee.

Fee per $1 contract on a standard sports market today
PriceKalshiPolymarketPolymarket USNovig (live)OG
10¢0.63¢0.45¢0.86¢0.54¢0.63¢
25¢1.31¢0.94¢1.78¢1.13¢1.31¢
50¢1.75¢1.25¢2.38¢1.50¢1.75¢
75¢1.31¢0.94¢1.78¢1.13¢1.31¢
90¢0.63¢0.45¢0.85¢0.54¢0.63¢

Fees by venue

Kalshi fees

  • Taker fee: 0.07 × contracts × price × (1 − price), rounded up.
  • Maker fee: 0.0175 × the same, charged only when a resting order fills. Cancelling is free.
  • A few series are fee-free, and combos carry twice the maker fee.
  • No deposit, settlement or ACH withdrawal fees; debit card deposits can cost up to 2%.
  • Unjuiced's Kalshi odds already include the taker fee.

Source: kalshi.com

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Polymarket fees

  • Taker fee: category rate × shares × price × (1 − price). Buy fees are taken in shares.
  • Makers never pay a fee, and earn a share of taker fees back as rebates.
  • Each market carries its own fee schedule, which is final: older sports markets are on 0.03, and some markets have no fee at all.
  • Combos use one 0.05 rate whatever their legs. Geopolitics and world-events markets are fee-free.
  • polymarket.com is not open to US traders; they trade on Polymarket US.

Rates since November 1, 2026 · Source: docs.polymarket.com

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Polymarket US fees

  • Taker fee: 0.095 × contracts × price × (1 − price), stepping down to 0.085, 0.075 and 0.0695 as your last 30 days of taker volume passes $10K, $50K and $250K (a new account pays 0.0695 for its first 7 days). Fees round to the nearest cent.
  • Makers pay nothing; makers above $10M a month earn rebates.
  • Takers above $250K a month earn back 3% to 30% of their fees each week.
  • Combos have their own fee curve, which uses your volume tier's rate since November 11.

Rates since October 29, 2026 · Source: docs.polymarket.us

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Novig fees

  • Pre-game straight bets have no fee for makers or takers.
  • Live bets and futures: takers pay 0.06 × contracts × price × (1 − price). Golf and tennis futures are exempt.
  • App parlays carry a 0.10 fee built into the quoted price.
  • Makers pay nothing and earn a maker credit on live and futures fills.

Source: support.novig.com

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OG fees

  • Taker fee on sports: 0.07 × contracts × price × (1 − price); resting orders pay 0.0175 × the same.
  • The fee is charged when you open a position and again if you sell before it settles. Settlement is free.
  • Crypto, FX, commodity and index markets are reported at a flat 2¢ a contract.
  • OG runs on Crypto.com's exchange (Crypto.com | Derivatives North America) and shares its fee schedule.

Source: help.crypto.com

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ProphetX fees

  • A 2% commission on a winning bet's winnings. Losing bets pay nothing beyond the stake. NHL instead pays a fee on each trade: 0.035 × price × (1 − price) a contract taking, 0.01 resting.
  • Unjuiced's ProphetX odds already include the commission.

Source: prophetx.co

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Questions

How are prediction market fees calculated?

Kalshi, Polymarket, Polymarket US, Novig and OG charge a taker fee of rate × contracts × price × (1 − price) when your order fills against one already on the book. The fee is largest on a 50¢ contract and shrinks toward 1¢ and 99¢. Orders that rest on the book and fill later (maker or limit orders) pay less or nothing. ProphetX instead takes a commission from a winning bet's profit.

What fees does Kalshi charge?

Kalshi charges takers 0.07 × contracts × price × (1 − price), rounded up, which is at most 1.75¢ a contract at 50¢ ($1.75 on 100 contracts). Resting (maker) orders pay 0.0175 × the same. A handful of series are fee-free. There are no deposit, settlement or ACH withdrawal fees.

What fees does Polymarket charge?

Polymarket charges takers a category rate × shares × price × (1 − price): 0.05 on most sports, 0.07 on crypto, 0.05 on economics, weather and culture, 0.04 on politics, finance, mentions and tech and nothing on geopolitics. Makers pay nothing. A market's own fee schedule is final, and some markets have no fee.

Does Polymarket US charge fees?

Yes. Since October 29, 2026, Polymarket US charges takers 0.095 × contracts × price × (1 − price) (at most 2.38¢ a contract at 50¢), stepping down to 0.085, 0.075 and 0.0695 as your last 30 days of taker volume passes $10K, $50K and $250K (a new account pays 0.0695 for its first 7 days). Makers pay nothing, and high-volume traders earn rebates. Fees round to the nearest cent.

Is Novig free?

Pre-game straight bets on Novig have no fee for anyone. Live bets and futures charge takers 0.06 × contracts × price × (1 − price) (golf and tennis futures are exempt), and app parlays have a 0.10 fee built into the quote. Makers pay nothing.

What fees does OG charge?

OG runs on Crypto.com's exchange and uses its schedule: takers pay 0.07 × contracts × price × (1 − price) on sports (at most 1.75¢ a contract at 50¢), resting orders pay 0.0175 × the same, and the fee is charged again if you sell before the game ends. Settlement is free.

What does ProphetX charge?

ProphetX takes 2% of a winning bet's winnings. A losing bet pays nothing beyond its stake. NHL instead pays a fee on each trade: 0.035 × price × (1 − price) a contract taking, 0.01 resting.

Which prediction market has the lowest fees on sports?

Pre-game, Novig is cheapest: a straight bet has no fee. On a 50¢ contract a taker otherwise pays up to 1.75¢ on Kalshi, 2.38¢ on Polymarket US and 1.25¢ on Polymarket's standard sports rate, while ProphetX takes 2% of winnings (1¢ on a winning 50¢ contract). Posting limit orders as a maker avoids most of these fees.

Do the odds on Unjuiced include prediction market fees?

Kalshi and ProphetX prices in Unjuiced's odds comparisons already include their fee. Polymarket, Polymarket US and Novig prices are the venue's own price; turn on Show prices after fees to see them with the taker fee in.

See every price after its fee

Unjuiced compares Kalshi, Polymarket, Polymarket US, Novig, OG and ProphetX with the sportsbooks. Turn on Show prices after fees and every prediction market price includes its taker fee, so the best price is the best price you can actually get.

Odds ScreenHow Unjuiced shows feesPrediction markets vs. sportsbooks