User Commission Rate

Type: USER-DATA

Weight: 20

GET /fapi/v1/commissionRate

Maker / taker fee rate for a symbol.

Request

GET /fapi/v1/commissionRate?symbol=BTCUSDT&timestamp=<ms>&signature=<hex>

Query params

Name	Type	Required	Notes
symbol	string	yes

Response — 200

{
  "symbol": "BTCUSDT",
  "makerCommissionRate": "0.00020",
  "takerCommissionRate": "0.00050"
}

Important: this returns the market's base rates and does not apply your VIP-tier discount, even though real fills are charged at the discounted rate. Treat it as the "default user" rate. The native GET /api/v1/account/fee-info (JWT optional) reports the effective tiered rate.

Authentication failures (INVALID_API_KEY, API_KEY_DISABLED, IP_NOT_ALLOWED, SIGNATURE_INVALID) apply to every signed endpoint and use Sparky's {"success":false,"error":{...}} envelope; see Error Codes.