Important Notice: Optimization of the Perpetual Futures Funding Rate Calculation Mechanism(01-09)

1. Adjustment Time

 2. Details of the Adjustment

2.1 Core Optimization of the MA Calculation Cycle

• Funding Rate = Clamp(MA [{(BestBidPrice BestAskPrice) / 2 - Index Price} / Index Price Interest], a, b)

• Funding Rate Upper Limit (a) = (Minimum Initial Margin - Minimum Maintenance Margin) * 0.75
• Funding Rate Lower Limit (b) = (Minimum Initial Margin - Minimum Maintenance Margin) * -0.75
• Interest:
  • USDT-Margined Contracts: daily interest rate of 0.03%
  • Coin-Margined Contracts: daily interest rate of 0.03%

2.2 Comparison Before and After the Optimization (with Example)

• The MA used in funding rate calculations is based on data within the current settlement cycle;
• Data accumulation starts from the beginning of the cycle, sampled once per minute;
• MA data continues to accumulate until the settlement cycle ends.

• The MA calculation is changed from a fixed cycle to a sliding window;
• The calculation window is based on the current time and looks backward over the corresponding cycle length;
• All valid data within the sliding window participates in the calculation, without relying on a fixed cycle start point.

• Before optimization, if the funding rate cycle is 4 hours and the current time is 16:10, the MA calculation still accumulates data starting from 16:00 of the same day;
• After optimization, regardless of the current time (e.g., 10:37 or 16:01), the MA calculation window always slides backward from the current moment, using historical data over the relevant cycle length (depending on the settlement cycle of the trading pair), without being restricted by fixed time boundaries.

3. Important References

3.1 Trading Pairs with Previously Updated Algorithms

3.2 Funding Rate Algorithm Help Center Update

• The Help Center content will be updated to reflect the new calculation logic after January 9, 08:00 (UTC);
• Prior to the update, the page will continue to display the previous version of the algorithm.

4. Risk Disclaimer

KuCoin Futures will continue to optimize its contract trading mechanisms to provide users with a safer and more efficient trading experience.