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Funding Rate

Understanding how funding rates work and their impact on perpetual contract trading

What is Funding Rate?

Funding rate is a mechanism used in perpetual contracts to keep the contract price close to the underlying spot price. It's a periodic payment between long and short position holders.

Key Concepts

Positive Funding Rate

Long positions pay short positions. Indicates perpetual price is above spot price.

Negative Funding Rate

Short positions pay long positions. Indicates perpetual price is below spot price.

Funding Schedule

Funding payments occur at regular intervals to maintain price stability between perpetual and spot markets.

SunPerp Funding Schedule

00:00 UTC
Every 8 hours
08:00 UTC
Every 8 hours
16:00 UTC
Every 8 hours

Important: You only pay or receive funding if you hold a position at the funding time. Positions opened and closed between funding intervals are not subject to funding payments.

Funding Rate Calculation

The funding rate is calculated using a combination of interest rate and premium index components.

Formula

Funding Rate =
Premium Index + clamp(Interest Rate - Premium Index, -0.05%, 0.05%)
Interest Rate Component

Fixed at 0.01% per 8-hour period (0.03% daily), representing the cost of holding the position.

Premium Index

Calculated as the time-weighted average of (Perpetual Price - Spot Price) / Spot Price over the funding period.

Rate Limits

  • • Maximum funding rate: ±0.75% per 8-hour period
  • • Clamp range: ±0.05% for interest rate adjustment
  • • Extreme market conditions may trigger circuit breakers
Payment Calculation

Your funding payment depends on your position size, the funding rate, and whether you're long or short.

Payment Formula

Funding Payment =
Position Value × Funding Rate
Example: Receiving Payment
Position:Long 1 BTC
Position Value:$45,000
Funding Rate:-0.01%
You Receive:+$4.50
Example: Paying
Position:Long 1 BTC
Position Value:$45,000
Funding Rate:+0.01%
You Pay:-$4.50
Funding Rate Trading Strategies

Understanding funding rates can help you optimize your trading strategy and potentially earn additional returns.

Funding Arbitrage

Take advantage of consistently high funding rates by holding positions that receive payments.

Risk: Market price movements may exceed funding income

Timing Entries

Consider funding costs when planning position duration and entry/exit timing.

Tip: Close positions before funding if rates are unfavorable