Polymarket built its reputation as the prediction market with basically no trading fee. That reputation is now only half true, and the other half changed in 2026.
Short answer: Polymarket historically charged no trading fee on most markets. As of 2026, it charges a taker-only fee that scales by market category — roughly 0.75% on sports up to about 1.75-1.80% on crypto markets at the riskiest 50/50 price point — while makers pay nothing and gas is covered by Polymarket's relayer. The costs that actually catch people off guard are not the fee line: they are the spread, the USDC-to-Polygon bridge, and, on Polymarket US, a Kalshi-shaped per-contract formula.
If you need the platform basics first, read What Is Polymarket?. This guide assumes you already know what Polymarket is and want the full cost picture — the new trading fee, the gas cost almost nobody notices, what it costs to get USDC onto Polygon in the first place, the spread, withdrawals, and the separate Polymarket US fee schedule.
TL;DR
- Polymarket's core trading fee was effectively zero for most of its history — a 2026 rollout changed that.
- The new fee is taker-only and category-based: roughly 0.75% (sports) up to about 1.75-1.80% (crypto) at the 50/50 price point, shrinking toward the extremes.
- Makers pay nothing and share in a rebate funded by taker fees; geopolitical / world-events markets stay completely fee-free.
- Gas is covered by Polymarket's relayer — you never need POL in your wallet to trade.
- Deposits and crypto withdrawals carry no Polymarket fee, but getting USDC onto Polygon in the first place can have its own bridging cost.
- Polymarket US (the CFTC-regulated, QCX LLC-operated product) runs a separate, Kalshi-shaped fee formula — not the same schedule as polymarket.com.
- The cost most people miss entirely is the spread — crossing a wide order book usually costs more than any listed fee.
How Polymarket's Fee Model Works
For most of Polymarket's history, its main differentiator versus regulated exchanges like Kalshi was that trading itself carried no fee — you paid the contract price and nothing else. That is no longer the full picture. Starting in 2026, Polymarket rolled out a taker fee that uses the same "priced-by-uncertainty" shape used elsewhere in this category (see Kalshi Fees Explained): the fee is small near 1 cent or 99 cents and largest at 50/50, where the outcome is most uncertain.
Two things still make Polymarket's model distinct:
- the fee only ever applies to the taker side of a trade, never to makers, and
- entire categories — geopolitical and world-events markets — remain completely fee-free by design.
The 2026 Taker Fee Rollout, by Category
The formula is: fee = shares traded x fee rate x price x (1 - price). Rollout began with Sports markets on March 30, 2026, and Polymarket has since extended the same formula to most other categories on the platform. As of publishing (early July 2026), Polymarket's own fee documentation lists the following approximate maximum effective rates, all peaking at the 50-cent price point and shrinking toward the extremes:
| Category | Approx. maximum taker fee (at 50/50) |
|---|---|
| Geopolitics / World Events | 0% (fee-free) |
| Sports | ~0.75% |
| Finance, Politics, Tech, Mentions | ~1.00% |
| Economics, Culture, Weather, Other | ~1.25% |
| Crypto | ~1.75-1.80% |
These are new numbers on a schedule that has already changed once in 2026, so treat this table as a snapshot, not a permanent fact. Check Polymarket's own fee schedule for your specific market before trading, especially since Prediction Market Fees Comparison and other cost comparisons written earlier in 2026 predate this rollout and describe an older, lower-fee version of Polymarket.
Maker vs Taker: Who Actually Pays
Only takers — orders that execute immediately against the book — pay the fee above. Maker orders, meaning limit orders that rest on the book until someone else fills them, are never charged. Instead, Polymarket funds a maker rebate program that redistributes a share of the collected taker fees back to makers daily, with the rebate reported to run roughly 20-25% depending on category.
The practical lesson is the same one that applies to Kalshi: if you can be patient and post a limit order rather than cross the book, you avoid the fee entirely and may even earn a small rebate.
Gas and the Relayer: The On-Chain Cost You Don't See
Polymarket runs on Polygon, so every trade, cancellation, and settlement is technically an on-chain transaction that would normally cost gas in POL. Polymarket removes that friction with a relayer: you sign the transaction, Polymarket's relayer submits it on-chain and pays the gas itself, and you never need to hold POL in your wallet to trade.
That is genuinely useful, but it is worth understanding it as a cost Polymarket absorbs rather than a cost that doesn't exist. It is one reason the platform needs other revenue (see below), not evidence that blockchains are free.
Getting USDC onto Polygon: The Cost Before You Trade
The fee schedule above only starts once your funds are already inside Polymarket. Getting there is a separate step with its own cost: if your USDC lives on Ethereum, Coinbase, or any other network, you generally need it on Polygon before you can trade. Bridging or routing that transfer can carry its own gas cost on the origin chain, and sometimes a bridge or exchange fee, on top of anything Polymarket itself charges.
For the full walkthrough, read How to Bridge USDC to Polygon for Polymarket before you move meaningful size.
Spread: The Cost No Fee Schedule Shows You
None of the numbers above capture the most common way traders overpay: the spread between the best bid and best ask on a thin order book. On an illiquid market, crossing a wide spread to get filled can cost far more than any taker fee, and it never shows up on a fee page because it isn't a fee — it's the market.
Before assuming a market is "cheap" because its category has a low taker rate, check the actual order book depth, not just the fee schedule.
Withdrawal Costs
On the standard, crypto-native Polymarket, withdrawing is free: there is no Polymarket withdrawal fee, and the platform covers the Polygon network gas on your behalf, with funds available in seconds on Polygon (or Base/Arbitrum, depending on route). The only real friction is the built-in dispute window on freshly resolved markets — funds are not withdrawable until that clears — and whatever an off-ramp exchange charges you to convert USDC back to fiat, which sits outside Polymarket's own fee structure.
See How to Withdraw from Polymarket for the full cash-out flow.
Polymarket US: A Separate Fee Schedule
"Polymarket" and "Polymarket US" are two different products with two different legal statuses, covered in full in Is Polymarket Legal in the US?, and they run two different fee schedules.
Polymarket US, the CFTC-regulated Designated Contract Market operated by QCX LLC, documents a formula that looks structurally like Kalshi's rather than the main platform's: a per-contract taker fee (coefficient around 0.06, capping near 1.5 cents per contract at the 50-cent price point) and a maker rebate, plus additional volume-based taker rebates for accounts trading over $250,000 a month. If you use Polymarket US specifically, check its own schedule directly — do not assume it matches either polymarket.com or Kalshi exactly, even though the shape is similar.
If Trading Is Mostly Free, How Does Polymarket Make Money?
Before 2026 this was the obvious question, and it is still worth asking now that fees only apply to takers on most categories. The clearest, most defensible answer is float: Polymarket holds a large pool of user USDC as trading collateral, and it can deploy that pool to earn yield while it sits there, paying users a smaller advertised return (reported around 4% annually in some periods) and keeping the difference.
Beyond that, reporting points to a premium institutional data feed — a product often referred to as Real-Time Data Socket — sold to trading firms and other data buyers, and a widely anticipated governance token that would add another monetization layer. None of the revenue-model detail here carries the same certainty as the published fee schedule above; treat it as informed reporting, not a confirmed disclosure from Polymarket itself.
How CoinRithm Fits In
CoinRithm is an independent aggregator, not a broker, exchange, or wallet, and it is not affiliated with Polymarket, Polymarket US, or QCX LLC. What it is useful for here:
- checking the live Polymarket hub for real prices and volume before you decide whether a fee or a spread is actually worth paying,
- using the Compare view to see the same event priced across venues, since a lower headline fee on one platform means little if its price on that specific market is worse, and
- practicing sizing and order types in a paper-trading sandbox before any of this touches real funds.
Frequently Asked Questions
Is Polymarket free to trade on?
Not anymore, on most categories. As of 2026, Polymarket charges a taker-only fee ranging from about 0.75% (sports) to roughly 1.75-1.80% (crypto) at the riskiest 50/50 price point, shrinking toward the edges. Maker orders and geopolitical / world-events markets remain fee-free.
What are Polymarket's gas fees?
Effectively zero for the trader. Polymarket runs on Polygon and uses a relayer that submits your signed transactions on-chain and pays the gas itself, so you never need to hold POL to trade.
Does Polymarket charge a withdrawal fee?
No. Standard crypto withdrawals from Polymarket carry no platform fee and settle in seconds on Polygon or other supported networks, though converting to fiat through an exchange may carry that exchange's own cost.
Is there a Polymarket deposit fee?
Polymarket itself does not charge a deposit fee, but getting USDC onto Polygon in the first place, if it isn't already there, can involve bridging or network costs that sit outside Polymarket's own fee schedule.
How does Polymarket make money if trading is mostly free?
Likely from yield on the USDC collateral it holds, the new category-based taker fees, and reportedly a premium data product sold to institutions, plus a possible future token. Only the fee schedule is confirmed with certainty; the rest is informed reporting, not a first-party financial disclosure.
Are Polymarket US fees the same as Polymarket's?
No. Polymarket US, the CFTC-regulated product operated by QCX LLC, runs its own per-contract formula that looks closer to Kalshi's model than to the main platform's category-based rates.
Conclusion
Polymarket's fee story changed in 2026: the "basically free to trade" reputation is now "free if you make, cheap if you take, and still free on geopolitics." The published fee schedule is genuinely small next to old-school brokerage costs, but it is not the only number that matters — gas is hidden behind a relayer, bridging has its own cost, spread can outweigh every fee on this page, and Polymarket US runs an entirely separate schedule.
Check the live numbers before you size a trade, and compare them against Kalshi Fees Explained and Prediction Market Fees Comparison if you are deciding between platforms.
Next Step
Need the platform basics first? Read What Is Polymarket?.
Deciding between platforms on cost? Read Prediction Market Fees Comparison or Kalshi Fees Explained.
Still need to fund your account? Read How to Bridge USDC to Polygon for Polymarket.
Not sure Polymarket is accessible to you? Read Is Polymarket Legal in the US?.
Want to see live markets before any of this matters? Start on the Polymarket hub.
Continue reading: Kalshi Alternatives.
Last Updated: July 4, 2026
Disclaimer: This article is for educational purposes only and is not financial advice. CoinRithm is an independent aggregator and is not affiliated with Polymarket, Polymarket US, or QCX LLC. Fee schedules — especially Polymarket's 2026 taker-fee rollout — can and do change. Always confirm current fees directly on Polymarket's own documentation before trading.
