Binance will adjust the contract funding rate calculation formula and mark price

BlockBeats News, September 16th, according to an official announcement, Binance has announced that starting from September 18, 2025, at 16:01 (UTC+8), the funding rate calculation formula for Binance Futures will be updated as follows: Funding Rate (F) = [Average Premium Index (P) + clamp (Interest Rate - Premium Index (P), 0.05%, -0.05%)] / (8/N), where N is the funding rate settlement frequency.

Furthermore, starting from September 18, 2025, at 16:01 (UTC+8), Binance Futures will adjust the mark price, changing the Price 2 basis from 1 minute to 30 seconds, with the specific adjustments as follows:

1. For USDT-Margined and Coin-Margined perpetual contracts after the adjustment: Mark Price = Median(Price 1, Price 2, Contract Price). Price 2 = Price Index + Moving Average (30-second basis). The Moving Average (30-second basis) is the average of 30 data points within 30 seconds. Data points are calculated every second by taking the average of the buy and sell prices and then subtracting the Price Index.

2. For USDT-Margined and Coin-Margined delivery contracts after the adjustment: Mark Price = Price Index + Moving Average (30-second basis). The Moving Average (30-second basis) = Moving Average ((Best Bid Price + Best Ask Price) / 2 - Price Index), with a 30-second interval and calculated every second. Data points are calculated every second by taking the average of the buy and sell prices and then subtracting the Price Index.