Polymarket didn't charge trading fees at all until 2025. Now it runs a tiered taker fee structure that tops out at 1.80% on certain markets, and most traders have no idea which rate applies to their trades until after the fill. That gap between what people assume Polymarket costs and what it actually costs is the reason this guide exists.
Polymarket fees changed meaningfully on March 30, 2026, when the platform expanded taker fees across more market categories as part of its push toward a full CFTC-regulated derivatives exchange following its $112 million acquisition of QCEX. If you're comparing Polymarket to Kalshi, sizing up whether to route orders as maker or taker, or just trying to figure out why your withdrawal came back smaller than expected, this is the breakdown. We'll cover polymarket trading fees line by line — taker fees, maker rebates, deposit costs, withdrawal costs, and the hidden expenses nobody puts in a fee schedule.
Quick Reference: Every Polymarket Fee at a Glance
| Fee Type | Rate | Who Pays | Notes |
|---|---|---|---|
| Taker fee | 0.75%-1.80% | Market takers | Rate varies by category, expanded March 30, 2026 |
| Maker order | 0% | Nobody | Free to place, earns rebates |
| Maker rebate | 20%-50% of fees generated | Paid to maker | Rebate share depends on market and volume |
| Deposit (USDC on Polygon) | $0 platform fee | You (network gas) | Gas is typically under $0.05 on Polygon |
| Withdrawal | $0 platform fee | You (network gas) | Same low Polygon gas cost applies |
| Idle balance interest | 0% APY | N/A | Kalshi pays ~4% APY on idle cash by comparison |
Polymarket Taker Fees: How the 0.75%-1.80% Structure Works
A taker fee is charged when your order fills immediately against existing liquidity in the order book — you're taking the price someone else already posted rather than waiting for your own order to get hit. Polymarket's taker fee scales with the category and liquidity profile of the market, running from 0.75% on the low end to 1.80% on the higher end after the March 30, 2026 expansion pulled more market types into the fee schedule.
Here's a concrete example. Say you buy $500 of "Yes" shares in a politics market priced at $0.60, and that market carries a 1% taker fee. You pay $500 plus a $5 fee, for $505 total, and you receive shares priced as if you'd paid $0.606 each instead of $0.60. On a $50,000 position in a market with the 1.80% top-tier fee, that's $900 in fees before the market has moved a single cent in your favor.
The realistic outcome for most retail traders is that taker fees quietly erode edge on short-term or high-frequency trades far more than on long-hold directional bets. A trader holding a position for three months until resolution barely notices a 1% one-time fee. A trader scalping in and out of a market five times a day feels it immediately, because the fee applies every time liquidity is taken, not just once.
The catch: Polymarket doesn't post a single universal rate anywhere you can bookmark. The exact percentage depends on the specific market's category and sometimes its liquidity tier, so you need to check the fee disclosure on each market before you trade it — especially since the March 2026 expansion pulled sports and crypto markets that used to be fee-free into the paid tier. If you're routing volume across multiple platforms, see our full Polymarket vs Kalshi comparison for how the fee models stack up side by side.
Polymarket Maker Rebates: Getting Paid Instead of Paying
A maker order is one that sits in the order book waiting to be filled by someone else — you're providing liquidity instead of consuming it. Polymarket charges zero fees on maker orders, and beyond that, it pays makers a rebate equal to 20% to 50% of the taker fees their liquidity generates.
Here's how that plays out in practice. If you place a limit order at $0.55 for a market that eventually gets hit by a taker paying a 1% fee, and the rebate share on that market is 40%, you collect a portion of that taker's fee just for having provided the resting liquidity. On a market with steady volume, an active market maker posting continuous two-sided quotes can turn maker rebates into a real secondary income stream on top of whatever directional edge they have.
The realistic outcome is that maker rebates matter enormously to high-volume traders and bots, and barely at all to someone placing five trades a month. Market making profitably requires capital sitting across multiple price levels, tight risk management around adverse selection, and usually some automation — see our breakdown of AI trading bots eating prediction markets alive for how much of this liquidity provision is now automated rather than manual.
The catch: your limit order might never fill. If the market never trades through your price, you earn nothing — no fee, no rebate, no position. Maker rebates reward patience and capital efficiency, not urgency, which makes them a poor fit for anyone trying to get into a market fast ahead of a specific news catalyst.
Polymarket Deposit Fees: What Funding Your Account Actually Costs
Polymarket doesn't charge a platform fee to deposit funds. Because the platform settles in USDC on the Polygon network, the only cost to fund your account is the underlying network gas fee, which on Polygon typically runs under a nickel per transaction.
The practical example: depositing $1,000 in USDC to Polymarket via Polygon costs you effectively nothing beyond the gas fee, versus the 1.5%-3.5% credit card processing fees or 4%+ conversion spreads you'd pay funding some crypto accounts through a fiat on-ramp. If you're bridging from Ethereum mainnet rather than already holding USDC on Polygon, you'll pay the bridge's gas cost too, which can run several dollars depending on Ethereum congestion at the time.
The realistic outcome is that deposit costs are close to a non-issue for anyone already comfortable holding USDC on Polygon, and a genuine friction point for first-time crypto users who need to acquire USDC, bridge it, and connect a wallet before they place a single trade. If you haven't done this before, walk through our step-by-step guide on how to deposit on Polymarket before you send funds anywhere.
The catch: Polymarket's zero-fee deposit policy only holds if you already have USDC on Polygon or a low-cost path to get it there. Buying USDC through a centralized exchange, withdrawing it to a wallet, and bridging to Polygon can stack up multiple small fees that add up to more than Polymarket's own charges.
Polymarket Withdrawal Fee: Why It's Lower Than You Think
The polymarket withdrawal fee follows the same logic as deposits — there's no platform-level withdrawal fee, only the Polygon network gas cost to move your USDC out. That typically means withdrawing $10,000 costs roughly the same few cents in gas as withdrawing $10.
Here's the concrete comparison that matters: on many centralized platforms, withdrawal fees are either a flat dollar amount regardless of size (which hurts small withdrawals disproportionately) or a percentage (which hurts large withdrawals disproportionately). Polymarket's gas-only model means the fee is essentially flat and negligible in dollar terms no matter your withdrawal size, which is a real structural advantage for anyone moving profits out regularly.
The realistic outcome is that withdrawal costs are rarely the deciding factor in choosing Polymarket over a competitor — they're close to free either way. Where it does matter is speed and destination flexibility: Polymarket withdrawals settle on-chain in USDC, so you need a compatible wallet and you're responsible for any subsequent conversion to fiat, which is where actual costs (exchange fees, spread) can creep back in.
The catch: withdrawing profits doesn't end your tax obligation. The IRS has issued zero formal guidance on how prediction market winnings should be classified, and Polymarket issues no tax forms at all globally, unlike Kalshi's 1099-MISC. See our guide on how prediction market winnings are taxed in 2026 before you assume a clean withdrawal means a clean tax filing.
Polymarket vs Kalshi Fees: The Direct Comparison
The polymarket vs kalshi fees question comes up constantly because the two platforms structure costs almost opposite to each other. Polymarket uses a percentage-based taker/maker model settled in USDC on Polygon; Kalshi uses a small per-contract fee settled in USD as a CFTC-regulated designated contract market.
| Category | Polymarket | Kalshi |
|---|---|---|
| Trading fee model | Taker 0.75%-1.80%, maker free | ~$0.02 per contract, variable |
| Maker incentive | 20%-50% rebate on fees generated | Standard order book, no rebate program |
| Deposit fee | $0 (Polygon gas only) | $0 (bank/card, standard processing) |
| Withdrawal fee | $0 (Polygon gas only) | $0 standard, faster options may cost extra |
| Idle cash interest | 0% APY | ~4% APY |
| Settlement currency | USDC | USD |
| Tax forms issued | None | 1099-MISC |
Polymarket wins on maker economics — the rebate program genuinely pays active liquidity providers, something Kalshi doesn't offer. Kalshi wins on idle capital efficiency, since its roughly 4% APY on uninvested cash beats Polymarket's flat 0% on parked USDC, and it wins on tax clarity by issuing 1099-MISC forms rather than leaving you to reconstruct everything yourself. For a full platform-by-platform breakdown beyond just fees, read our complete Polymarket vs Kalshi guide, or check the individual Polymarket review and Kalshi review.
How to Build Your Own Polymarket Fee Calculator
There's no official polymarket fee calculator published on the platform, so here's the framework to build your own. Start with your position size, then identify whether your order will fill as maker or taker — check the order book depth at your intended price before submitting.
For a taker order: multiply your trade size by the market's specific taker rate (0.75% to 1.80%, check the market page) to get your fee in dollars. For a maker order that fills: your fee is zero, and you may receive a rebate calculated as 20%-50% of whatever taker fee the counterparty paid on that fill. Add estimated Polygon gas costs (typically $0.01-$0.05 per transaction) for both entry and exit, and you have a realistic all-in cost estimate before you place the trade.
A worked example: you're considering a $2,000 taker position in a sports market carrying a 1.5% fee. Your fee is $30. If you instead place a resting limit order at your target price and it fills as a maker, your fee is $0 and you might collect a rebate worth roughly $9-$15 depending on the rebate tier, meaning the difference between taker and maker execution on this single trade is roughly $39-$45. Multiply that gap across dozens of trades a month and the maker/taker decision becomes one of the biggest controllable costs in your trading, more significant than most people account for when comparing prediction market strategies across platforms.
Hidden Costs Beyond the Stated Fee Schedule
Stated fees are only part of the real cost of trading on Polymarket. Slippage — the gap between the price you see and the price you actually get filled at — can dwarf the taker fee itself on thin, illiquid markets, particularly niche political or macro contracts with few active participants.
Bid-ask spread is another silent cost. On a deep, popular market like a major election contract, the spread might be a fraction of a cent. On an obscure market with a handful of daily trades, the spread can run several cents wide, meaning you lose money the instant you enter and exit even before any fee is applied. Traders running cross-platform strategies also need to account for the cost of moving capital between venues — our guide on arbitraging Polymarket and Kalshi walks through how thin these margins really are once fees and spread are both counted.
Opportunity cost matters too. Polymarket pays 0% interest on idle USDC sitting in your account, while Kalshi pays roughly 4% APY on uninvested cash. If you keep $10,000 parked on Polymarket between trades for a year, you're forgoing roughly $400 you'd have earned holding the same capital at Kalshi, a cost that never shows up on any fee schedule but shows up in your annual return regardless.
The Honest Reality Check on Polymarket's Costs
Most traders underestimate their all-in cost basis by ignoring gas, spread, and opportunity cost, and only counting the stated taker fee. On a market with a 1% taker fee and a 3-cent spread on a $0.50 contract, the spread alone is a bigger drag than the fee. Polymarket's push toward regulated status — the QCEX acquisition, the reported $2 billion ICE investment, and the company's reported target of a $20 billion valuation — suggests fee structures will keep evolving as the platform positions itself as a full derivatives exchange rather than the fee-free crypto novelty it started as.
The expanded taker fees from March 30, 2026 are a preview of that direction, not the final version. If you're building a trading approach around Polymarket's current fee schedule, build in room for rates to shift, and check the specific market's fee disclosure before every large trade rather than assuming last month's rate still applies.
For more on how Polymarket stacks up against the rest of the field, see our full rankings in best prediction market apps 2026, our explainer on how prediction markets work, and our guide to whether prediction markets are legal in the US if regulatory status factors into your platform choice. If sports contracts are your focus, our prediction markets vs sports betting breakdown covers how fees compare to a traditional sportsbook's vig.
Frequently Asked Questions
What are Polymarket's trading fees right now?
Polymarket charges a taker fee ranging from 0.75% to 1.80% depending on the specific market's category, expanded across more markets on March 30, 2026. Maker orders are free and can earn a rebate of 20% to 50% of the taker fees they generate. Check each market's individual fee disclosure since the rate isn't uniform platform-wide.
Does Polymarket charge a withdrawal fee?
No platform-level withdrawal fee exists. You only pay the Polygon network gas cost, typically a few cents, since Polymarket settles in USDC on Polygon regardless of withdrawal size.
Does Polymarket charge a deposit fee?
No. Depositing USDC on Polygon only costs the underlying gas fee, usually under a nickel. If you're bridging funds from another network like Ethereum mainnet, you'll pay that network's separate gas cost first. See our guide on how to deposit on Polymarket for the full walkthrough.
Is Polymarket cheaper than Kalshi?
It depends on your trading style. Polymarket's maker rebates make it cheaper for active liquidity providers, while Kalshi's ~4% APY on idle cash and per-contract fee model can be cheaper for buy-and-hold traders. Read the full Polymarket vs Kalshi comparison for a category-by-category breakdown.
How do maker rebates work on Polymarket?
When your resting limit order gets filled by a taker, you receive 20% to 50% of the fee that taker paid, and you pay no fee yourself for providing that liquidity. The exact rebate percentage varies by market and liquidity tier.
Why did my Polymarket trade cost more than expected?
Most surprise costs come from slippage and bid-ask spread on thin markets rather than the stated taker fee itself. Always check order book depth before placing a large market order, especially on lower-volume contracts.
Do I owe taxes on Polymarket withdrawals?
Withdrawing funds doesn't trigger a specific tax event by itself, but any realized gains from your trading activity are taxable regardless of whether you withdraw. Polymarket issues no tax forms, so you're responsible for tracking your own gains. See our guide on how prediction market winnings are taxed for the details the IRS hasn't clarified yet.
Is there an official Polymarket fee calculator?
Polymarket doesn't publish an official calculator. Build your own estimate by checking the specific market's taker rate, multiplying it by your trade size, and adding Polygon gas costs for entry and exit.
