Understanding Funding Rate

How It Impacts Your Futures Costs & Profits

Risk Warning: Funding rates can increase holding costs or generate income depending on market conditions. Always monitor funding rates before holding positions for extended periods.

1. What is Funding Rate?

In USDT-margined perpetual futures, there is no expiry date. To keep the contract price closely aligned with the underlying spot/index price, a mechanism called the Funding Rate is used.

The Funding Rate is a periodic payment exchanged directly between long and short position holders. Bittime does not take any portion of the funding fee — it is a peer-to-peer transfer between traders.

2. How Funding Rate Works

Every 8 hours, funding is settled based on the prevailing Funding Rate at that moment.

Typical settlement times (UTC):

• 00:00 UTC
• 08:00 UTC
• 16:00 UTC

If you hold a position across a settlement time, funding will be applied to your account.

Positive Funding Rate

When the Funding Rate is positive, long position holders pay short position holders. This usually happens when the perpetual contract is trading at a premium to the spot/index price (bullish sentiment).

Negative Funding Rate

When the Funding Rate is negative, short position holders pay long position holders. This typically occurs when the perpetual is trading at a discount to the spot price (bearish sentiment).

3. Simple Funding Fee Calculation

The basic formula is:

Funding Fee = Position Value × Funding Rate

Where Position Value is generally calculated using Mark Price × Position Size.

Example:

You hold a long position of 0.1 BTC. Mark Price is 60,000 USDT. Funding Rate is +0.01%.

Position Value = 0.1 × 60,000 = 6,000 USDT

Funding Fee you pay = 6,000 × 0.0001 = 0.6 USDT

If the rate were −0.01%, you would receive 0.6 USDT instead.

4. Why Funding Rate Matters for Your Trading

1. Cost of holding: Frequent positive funding can slowly erode profits on long positions.
2. Income opportunity: In strongly negative funding environments, holding longs can generate passive funding income.
3. Strategy consideration: Short-term traders may ignore small rates, while swing/position traders must factor funding into expected returns.
4. Risk management: High absolute funding rates often signal crowded positions and elevated risk of sharp reversals.

5. Practical Tips for Beginners

• Always check the current Funding Rate and countdown timer on the trading interface before opening or holding a position overnight.
• For very short-term trades (minutes to a few hours), funding impact is usually minimal.
• If you plan to hold for days, calculate the potential cumulative funding cost and include it in your profit target.
• Extremely high positive or negative rates are often temporary and can reverse quickly.
• Use lower leverage when holding through multiple funding periods to reduce the impact of adverse price moves combined with funding payments.

6. Key Takeaways

Funding Rate is a core mechanism of USDT-margined perpetual futures. Understanding it helps you avoid unexpected costs and make better decisions about position holding periods. Always treat funding as part of your overall trading cost analysis.