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PolyFundr mirrors how trading works on Polymarket, including fees, slippage, and order rules. That keeps your results close to real trading, which is what makes a funded track record meaningful.

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Trading fees

Fees mirror Polymarket’s trading fees and are shown on the trade panel before you confirm. The exact fee for the market you are on appears on the Est. fee line.
PolyFundr charges the same trading fee Polymarket would charge for that market. The fee depends on two things: the market’s category, and the price you trade at.
  • The fee is largest at 50/50 odds and gets smaller as the price moves toward the edges (1¢ or 99¢).
  • Fees apply when you place a normal buy or sell (you are taking liquidity).

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How much

At 50/50 odds, where the dollar fee is highest, the fee as a share of your trade is:
Many markets are free. Geopolitical and world-event markets never charge a fee, and any market that Polymarket has not enabled fees on is free too. Whenever a market is free, the trade panel shows Est. fee: Free.

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Fee at every price (per 100 shares)

The dollar fee follows Polymarket’s exact formula: it peaks at 50¢ and shrinks symmetrically toward the edges, so a trade at 30¢ costs the same as one at 70¢. Below is the taker fee in USDC for 100 shares at each price.
Taker fee in USDC for 100 shares, by price and category

Taker fee in USDC for 100 shares, by price and category

Geopolitical and world-event markets are free at every price, so they are not shown above. Any other market Polymarket has not enabled fees on is free too.

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How the fee is applied

  • When you buy: the fee comes out of the amount you enter, so you receive slightly fewer shares than a fee-free amount would buy. A fresh position can show a small paper loss equal to the fee. This is exactly how it works on Polymarket.
  • When you sell: the fee is taken out of your proceeds.
  • At resolution: free. If you hold a winning position until the market resolves, you are paid out with no fee. Only closing early (selling before the market resolves) is charged.

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Where you see fees

  • Before you trade: the Est. fee line and its tooltip on the trade panel.
  • After you trade: the fee you paid is shown on your positions, and your profit and loss is always shown after fees.

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Slippage on large orders

For larger orders, the price you get is the average price across the order book, not just the best quote. On a deep market the difference is tiny. On a thin market, a big order can fill at a noticeably worse average price.
If your order would fill more than about 3% worse than the best available price, the panel asks you to confirm before it goes through. You can accept and trade at that average price, or cancel and try a smaller size.
If a market does not have enough depth to fill your order at all, the order is rejected. Try a smaller size or wait for more liquidity. PolyFundr never fills you against a stale or estimated price.

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Order minimums and increments

To match Polymarket’s order rules:
  • Minimum order size: orders below the market minimum (about $1) are rejected rather than quietly rounded up.
  • Price increments: prices snap to the increments the market allows. Any small rounding is shown to you before you confirm.
These rules make sure every trade you place on PolyFundr is one you could actually place on Polymarket.

Placing trades

Step by step: how to place a YES or NO trade.

Positions & PnL

Track your open positions and profit and loss.