This is a general announcement. Products and services referred to here may not be available in your region.

Fellow Binancians,

Binance constantly reviews its product and service offerings to ensure the best user experience for all users. Effective from 2025-09-18 08:01 (UTC), the funding rate formula will be updated as follows:

Before the Update

After the Update

Funding Rate (F)
= Average Premium Index (P) + clamp (interest rate per funding interval - Premium Index (P), 0.05%, -0.05%)

Notes: 

The interest rate is fixed at 0.03% daily by default except for BNBUSDT and ETHBTC perpetual contracts, for which the interest rate is set to 0%. When the funding interval is every 8 hours, the interest rate per funding interval will be 0.01%. When the funding interval is every 1 hour, the interest rate per funding interval will be 0.00125%.

Funding Rate (F)
= [Average Premium Index (P) + clamp (interest rate - Premium Index (P), 0.05%, -0.05%) ] / (8/N)


Where
interest rate = 0.01%, except BNBUSDT and ETHBTC perpetual contracts, for which the interest rate is set to 0%.

N = funding interval

Example:

PUMPUSDT’s funding interval is every 4 hours.


PUMPUSDT’s funding rate formula will be as follows:


Funding Rate (F)

= [Average Premium Index (P) + clamp (interest rate - Premium Index (P), 0.05%, -0.05%) ]/ (8/4)

= [Average Premium Index (P) + clamp (0.01% - Premium Index (P), 0.05%, -0.05%) ] / 2

In addition, effective from 2025-09-18 08:01 (UTC), Binance Futures will make adjustments to mark price calculations by updating the basis of Price 2 from 1-minute basis to 30 seconds basis, with details as follows:

Futures Contracts

Before the Adjustment

After the Adjustment

USDⓈ-M and COIN-M Perpetual Contracts

Mark Price = Median (Price 1, Price 2, Contract Price)

Where Price 2 = Price Index + Moving Average (1-Minute Basis)

Note: The Moving Average (1-Minute Basis) is calculated as the average of 60 data points over a 1-minute period.

The basis is calculated every second by taking the average of the bid and ask prices and then subtracting the Price Index.

Mark Price = Median (Price 1, Price 2, Contract Price)

Where Price 2 = Price Index + Moving Average (30 Seconds Basis)

Note: The Moving Average (30 Seconds Basis) is calculated as the average of 30 data points over a 30 seconds period.

The basis is calculated every second by taking the average of the bid and ask prices and then subtracting the Price Index.

USDⓈ-M and COIN-M Delivery Contracts

Mark Price = Price Index + Moving Average (1-Minute Basis)

Note: Moving Average (1-Minute Basis) = Moving Average ((Bid1 + Ask1) / 2 - Price Index), calculated each second minute in a 1-minute interval.

The basis is calculated every second by taking the average of the bid and ask prices and then subtracting the Price Index.

Mark Price = Price Index + Moving Average (30 Seconds Basis)

Note: Moving Average (30 Seconds Basis) = Moving Average ((Bid1 + Ask1) / 2 - Price Index), calculated each second minute in a 30 seconds interval.

The basis is calculated every second by taking the average of the bid and ask prices and then subtracting the Price Index.

Notes

  • Users may visit the Real-Time Funding Rate and Funding Rate History pages to view the latest funding interval and historical funding rates. API users may query USDⓈ-M futures funding rate information via the newly added endpoint: GET /fapi/v1/fundingInfo. 

  • There may be discrepancies between this original content in English and any translated versions. Please refer to the original English version for the most accurate information, in case any discrepancies arise.

For More Information:

Thank you for your support!

Binance Team

2025-09-16