Poloniex to Update Funding Rate Calculation Formula

Dear Poloniex Users,

To further enhance pricing efficiency and market stability in futures trading, Poloniex will implement an update to the funding rate calculation mechanism for USDT-margined perpetual futures at 06:00 (UTC) on April 30, 2026.

This update aims to improve how funding rates adapt to real-time market conditions, enabling a more accurate reflection of supply-demand dynamics and order book depth. See the details below:

1. Updated Funding Rate Formula

Funding rates are calculated using the following new formula:

Funding rate = clamp {A, Upper limit of funding rate, Lower limit of funding rate}

Where:

• Average funding rate (A) = [Average premium index Premium deviation (B)] / (8 / N)

• Premium deviation (B) = clamp (Interest rate − Average premium index, Upper premium deviation limit, Lower premium deviation limit)

2. Dynamic Funding Interval (N)

Examples:

• N is the funding interval, taking a positive integer from 1 to 8. For example, if a certain cryptocurrency has a funding interval of 4 hours, then N will be 2 (=8/4).

• The funding interval is dynamically adjusted based on a calendar day and will take effect immediately after the adjustment. For instance, if the current time is 12:30 and the funding interval for a certain cryptocurrency is adjusted from 8 hours to 1 hour, the next funding settlement time will immediately change from 16:00 to 13:00.

3. Optimized Premium Index Formula

Premium index is calculated using the following new formula:

Premium index = [Max (0, Impact bid price - Index price) - Max (0, Index price - Impact ask price)] / Index price

Thank you for your continued support and trust in Poloniex.

Poloniex

April 30, 2026