Polymarket does not charge fees on most markets. However, certain markets have taker fees enabled to fund the [Maker Rebates Program](/market-makers/maker-rebates).
The following market types charge a small taker fee on each trade. These fees are collected and redistributed daily to market makers as rebates, incentivizing deeper liquidity and tighter spreads.
* **15-minute crypto markets**
* **5-minute crypto markets**
* **NCAAB (college basketball) markets** (starting February 18, 2026 for new markets)
* **Serie A markets** (starting February 18, 2026 for new markets)
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. The effective rate **peaks at 50%** probability and decreases symmetrically toward the extremes.
The maximum effective fee rate is **0.44%** at 50% probability. Fees decrease symmetrically toward both extremes.
</Tab>
</Tabs>
### Fee Precision
Fees are rounded to 4 decimal places. The smallest fee charged is **0.0001 USDC**. Anything smaller rounds to zero, so very small trades near the extremes may incur no fee at all.
***
## Identifying Fee-Enabled Markets
The following market types have fees enabled:
* **15-minute crypto markets**
* **5-minute crypto markets**
* **NCAAB (college basketball) markets** (starting February 18, 2026 for new markets)
* **Serie A markets** (starting February 18, 2026 for new markets)
Query the fee-rate endpoint to check any specific market. See the [API Reference](/api-reference/introduction) for full endpoint documentation.
```bash theme={null}
GET https://clob.polymarket.com/fee-rate?token_id={token_id}
```
***
## Fee Handling for API Users
### Using the SDK (Recommended)
The official CLOB clients **automatically handle fees** for you — they fetch the fee rate and include it in the signed order payload.
**You don't need to do anything extra.** Your orders will work on fee-enabled markets.
### Using the REST API
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.
**Step 1:** Fetch the fee rate for the token ID before creating your order:
```bash theme={null}
GET https://clob.polymarket.com/fee-rate?token_id={token_id}
```
See the [fee-rate API Reference](/api-reference/introduction) for full response details. Fee-enabled markets return a non-zero value; fee-free markets return `0`.
**Step 2:** Add the `feeRateBps` field to your order object. This value is part of the signed payload — the CLOB validates your signature against it.
