247 lines
10 KiB
Markdown
247 lines
10 KiB
Markdown
> ## Documentation Index
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> Fetch the complete documentation index at: https://docs.polymarket.com/llms.txt
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> Use this file to discover all available pages before exploring further.
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# Maker Rebates Program
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> Technical guide for handling taker fees and earning maker rebates on Polymarket
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Polymarket has enabled taker fees on **15-minute crypto markets**, **NCAAB (college basketball)**, and **Serie A** markets.
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These fees fund a Maker Rebates program that pays daily USDC rebates to liquidity providers.
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<Note>
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Starting **Wednesday, February 18th, 2026 at midnight (UTC)**, taker fees and maker rebates will apply to all **new** NCAAB and Serie A markets created after that time. Existing markets are not affected. The first payout will be on February 19th at midnight (UTC).
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</Note>
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## Fee Handling by Implementation Type
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### Option 1: Official CLOB Clients (Recommended)
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The official CLOB clients **automatically handle fees** for you
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<Card title="TypeScript Client" icon="js" href="https://github.com/Polymarket/clob-client">
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npm install @polymarket/clob-client\@latest
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</Card>
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<CardGroup cols={2}>
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<Card title="Python Client" icon="python" href="https://github.com/Polymarket/py-clob-client">
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pip install --upgrade py-clob-client
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</Card>
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<Card title="Rust Client" icon="rust" href="https://github.com/Polymarket/rs-clob-client">
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cargo add polymarket-client-sdk
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</Card>
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</CardGroup>
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**What the client does automatically:**
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1. Fetches the fee rate for the market's token ID
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2. Includes `feeRateBps` in the order structure
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3. Signs the order with the fee rate included
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**You don't need to do anything extra**. Your orders will work on fee-enabled markets.
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***
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### Option 2: REST API / Custom Implementations
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If you're calling the REST API directly or building your own order signing, you must manually include the fee rate in your signed order payload.
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#### Step 1: Fetch the Fee Rate
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Query the fee rate for the token ID before creating your order:
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```bash theme={null}
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GET https://clob.polymarket.com/fee-rate?token_id={token_id}
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```
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**Response:**
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```json theme={null}
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{
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"fee_rate_bps": 1000
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}
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```
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* **Fee-enabled markets** return a value like `1000`
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* **Fee-free markets** return `0`
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#### Step 2: Include in Your Signed Order
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Add the `feeRateBps` field to your order object. This value is part of the signed payload, the CLOB validates your signature against it.
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```json theme={null}
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{
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"salt": "12345",
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"maker": "0x...",
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"signer": "0x...",
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"taker": "0x...",
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"tokenId": "71321045679252212594626385532706912750332728571942532289631379312455583992563",
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"makerAmount": "50000000",
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"takerAmount": "100000000",
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"expiration": "0",
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"nonce": "0",
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"feeRateBps": "1000",
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"side": "0",
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"signatureType": 2,
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"signature": "0x..."
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}
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```
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#### Step 3: Sign and Submit
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1. Include `feeRateBps` in the order object **before signing**
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2. Sign the complete order
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3. POST to `/order` endpoint
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<Note>
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**Important:** Always fetch `fee_rate_bps` dynamically, do not hardcode. The fee rate varies by market type and may change over time. You only need to pass `feeRateBps`
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</Note>
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See the [Create Order documentation](/developers/CLOB/orders/create-order) for full signing details.
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***
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## Fee Behavior
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Fees are calculated using the following formula:
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```text theme={null}
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fee = C × p × feeRate × (p × (1 - p))^exponent
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```
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Where **C** = number of shares traded and **p** = price of the shares. The fee parameters differ by market type:
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| Parameter | Sports (NCAAB, Serie A) | 15-Min Crypto |
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| -------------- | ----------------------- | ------------- |
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| Fee Rate | 0.0175 | 0.25 |
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| Exponent | 1 | 2 |
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| Maker Rebate % | 25% | 20% |
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Taker fees are calculated in USDC and vary based on the share price. However, fees are collected in shares on buy orders and USDC on sell orders.
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The effective rate **peaks at 50%** probability and decreases symmetrically toward the extremes.
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<img src="https://mintcdn.com/polymarket-292d1b1b/cYugaGfLiC5yQnD1/polymarket-learn/media/fee_image_review.png?fit=max&auto=format&n=cYugaGfLiC5yQnD1&q=85&s=302c97e82876eac5b1bdf962872d6316" alt="Fee Curves" data-og-width="1484" width="1484" data-og-height="882" height="882" data-path="polymarket-learn/media/fee_image_review.png" data-optimize="true" data-opv="3" srcset="https://mintcdn.com/polymarket-292d1b1b/cYugaGfLiC5yQnD1/polymarket-learn/media/fee_image_review.png?w=280&fit=max&auto=format&n=cYugaGfLiC5yQnD1&q=85&s=5c5ea33f6718c77bc5501eec7d284c7d 280w, https://mintcdn.com/polymarket-292d1b1b/cYugaGfLiC5yQnD1/polymarket-learn/media/fee_image_review.png?w=560&fit=max&auto=format&n=cYugaGfLiC5yQnD1&q=85&s=11f68c179d0f5d8bb20303d3f1847d65 560w, https://mintcdn.com/polymarket-292d1b1b/cYugaGfLiC5yQnD1/polymarket-learn/media/fee_image_review.png?w=840&fit=max&auto=format&n=cYugaGfLiC5yQnD1&q=85&s=2c150cef5a9b1688ee542644bea4a8b5 840w, https://mintcdn.com/polymarket-292d1b1b/cYugaGfLiC5yQnD1/polymarket-learn/media/fee_image_review.png?w=1100&fit=max&auto=format&n=cYugaGfLiC5yQnD1&q=85&s=1a8df2065e4c3e2634c55cbf5eae23a4 1100w, https://mintcdn.com/polymarket-292d1b1b/cYugaGfLiC5yQnD1/polymarket-learn/media/fee_image_review.png?w=1650&fit=max&auto=format&n=cYugaGfLiC5yQnD1&q=85&s=c8c9a753e1c286ebdf03e3e395452cf1 1650w, https://mintcdn.com/polymarket-292d1b1b/cYugaGfLiC5yQnD1/polymarket-learn/media/fee_image_review.png?w=2500&fit=max&auto=format&n=cYugaGfLiC5yQnD1&q=85&s=51b816a9f19219f061e404f35a4d0e13 2500w" />
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### Fee Table (100 shares)
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<Tabs>
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<Tab title="15-Min Crypto">
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| Price | Trade Value | Fee (USDC) | Effective Rate |
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| ------ | ----------- | ---------- | -------------- |
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| \$0.01 | \$1 | \$0.00 | 0.00% |
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| \$0.05 | \$5 | \$0.003 | 0.06% |
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| \$0.10 | \$10 | \$0.02 | 0.20% |
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| \$0.15 | \$15 | \$0.06 | 0.41% |
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| \$0.20 | \$20 | \$0.13 | 0.64% |
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| \$0.25 | \$25 | \$0.22 | 0.88% |
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| \$0.30 | \$30 | \$0.33 | 1.10% |
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| \$0.35 | \$35 | \$0.45 | 1.29% |
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| \$0.40 | \$40 | \$0.58 | 1.44% |
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| \$0.45 | \$45 | \$0.69 | 1.53% |
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| \$0.50 | \$50 | \$0.78 | **1.56%** |
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| \$0.55 | \$55 | \$0.84 | 1.53% |
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| \$0.60 | \$60 | \$0.86 | 1.44% |
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| \$0.65 | \$65 | \$0.84 | 1.29% |
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| \$0.70 | \$70 | \$0.77 | 1.10% |
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| \$0.75 | \$75 | \$0.66 | 0.88% |
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| \$0.80 | \$80 | \$0.51 | 0.64% |
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| \$0.85 | \$85 | \$0.35 | 0.41% |
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| \$0.90 | \$90 | \$0.18 | 0.20% |
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| \$0.95 | \$95 | \$0.05 | 0.06% |
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| \$0.99 | \$99 | \$0.00 | 0.00% |
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The maximum effective fee rate is **1.56%** at 50% probability. Fees decrease symmetrically toward both extremes.
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</Tab>
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<Tab title="Sports (NCAAB, Serie A)">
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| Price | Trade Value | Fee (USDC) | Effective Rate |
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| ------ | ----------- | ---------- | -------------- |
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| \$0.01 | \$1 | \$0.00 | 0.02% |
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| \$0.05 | \$5 | \$0.00 | 0.08% |
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| \$0.10 | \$10 | \$0.02 | 0.16% |
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| \$0.15 | \$15 | \$0.03 | 0.22% |
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| \$0.20 | \$20 | \$0.06 | 0.28% |
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| \$0.25 | \$25 | \$0.08 | 0.33% |
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| \$0.30 | \$30 | \$0.11 | 0.37% |
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| \$0.35 | \$35 | \$0.14 | 0.40% |
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| \$0.40 | \$40 | \$0.17 | 0.42% |
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| \$0.45 | \$45 | \$0.19 | 0.43% |
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| \$0.50 | \$50 | \$0.22 | **0.44%** |
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| \$0.55 | \$55 | \$0.24 | 0.43% |
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| \$0.60 | \$60 | \$0.25 | 0.42% |
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| \$0.65 | \$65 | \$0.26 | 0.40% |
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| \$0.70 | \$70 | \$0.26 | 0.37% |
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| \$0.75 | \$75 | \$0.25 | 0.33% |
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| \$0.80 | \$80 | \$0.22 | 0.28% |
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| \$0.85 | \$85 | \$0.19 | 0.22% |
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| \$0.90 | \$90 | \$0.14 | 0.16% |
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| \$0.95 | \$95 | \$0.08 | 0.08% |
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| \$0.99 | \$99 | \$0.02 | 0.02% |
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The maximum effective fee rate is **0.44%** at 50% probability. Fees decrease symmetrically toward both extremes.
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</Tab>
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</Tabs>
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***
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## Maker Rebates
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Your rebate for each market:
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```text theme={null}
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fee_equivalent = C × p × feeRate × (p × (1 - p))^exponent
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rebate = (your_fee_equivalent / total_fee_equivalent) * rebate_pool
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```
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### How Rebates Work
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* **Eligibility:** Your orders must add liquidity (maker orders) and get filled
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* **Calculation:** Proportional to your share of executed maker volume in each eligible market. Totals are calculated per market, so you only compete with other makers in the same market
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* **Fee collection:** Fees are calculated in USDC but collected in shares on buy orders and USDC on sell orders
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* **Payment:** Daily in USDC, paid directly to your wallet
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### Rebate Pool
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Each market's rebate pool is funded by taker fees collected in that market. The payout percentage is subject to change:
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| Market Type | Period | Maker Rebate | Distribution Method |
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| ----------------------- | ------------- | ------------ | ------------------- |
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| 15-Min Crypto | Jan 19, 2026+ | 20% | Fee-curve weighted |
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| Sports (NCAAB, Serie A) | Feb 18, 2026+ | 25% | Fee-curve weighted |
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The rebate percentage is at the sole discretion of Polymarket and may change over time.
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***
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## Which Markets Have Fees?
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The following market types have fees enabled:
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* **15-minute crypto markets**
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* **NCAAB (college basketball) markets** (starting February 18, 2026 for new markets)
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* **Serie A markets** (starting February 18, 2026 for new markets)
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Query the fee-rate endpoint to check any specific market:
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```bash theme={null}
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GET https://clob.polymarket.com/fee-rate?token_id={token_id}
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# Fee-enabled: { "fee_rate_bps": 1000 }
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# Fee-free: { "fee_rate_bps": 0 }
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```
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***
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## Related Documentation
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<CardGroup cols={2}>
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<Card title="Maker Rebates Program" icon="coins" href="/polymarket-learn/trading/maker-rebates-program">
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User-facing overview with full fee tables
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</Card>
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<Card title="Create CLOB Order via REST API" icon="code" href="/developers/CLOB/orders/create-order">
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Full order structure and signing documentation
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</Card>
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</CardGroup>
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