Perpetual futures are cryptocurrency derivatives contracts with no expiry date — unlike traditional futures that settle on a fixed date. This creates a mechanism problem: without expiry, there's nothing to force the futures price toward the spot (actual market) price. The funding rate is the solution. It's a periodic payment between long and short traders that keeps the perpetual futures price anchored to spot.
How Funding Rates Work
When the perpetual futures price trades above spot (longs are dominant and bullish), the funding rate is positive. Long traders pay short traders. This creates an incentive for new shorts to enter and long traders to exit, pulling the futures price back toward spot.
When futures trade below spot (shorts are dominant), the funding rate is negative. Short traders pay long traders. This incentivizes new longs and short closing, pushing futures price back up toward spot.
The result: the perpetual futures price stays close to the spot price at all times, without ever expiring. This is why you can hold a perpetual futures position indefinitely — though you'll pay or receive funding the entire time you're open.
When Is Funding Paid?
Most exchanges — Binance, OKX, Bybit, Deribit — pay funding every 8 hours: at 00:00, 08:00, and 16:00 UTC. Some exchanges use different intervals (4 hours, 1 hour on some platforms). You must be in a position at the exact funding payment time to send or receive the payment. A position opened and closed between payment windows pays no funding.
How to Calculate Funding Cost
Funding payment = Position notional value × Funding rate
Example: Long 1 BTC at $60,000 → Notional = $60,000. Funding rate = 0.01% per 8-hour period. Funding paid = $60,000 × 0.0001 = $6 per 8 hours = $18 per day if held continuously.
This seems small, but at elevated funding rates (0.1%–0.3% per 8 hours during strong bull markets), the daily cost on a large leveraged position becomes significant. Use the Funding Rate Calculator to see the exact daily and annualized cost for any position size and funding rate.
Funding Rate as a Sentiment Indicator
Consistently high positive funding rates signal that longs are paying shorts — meaning retail sentiment is heavily bullish. Historically, extreme positive funding (above 0.1% per 8 hours sustained for days) often precedes short-term price corrections, as overleveraged longs get squeezed out. Negative funding (longs being paid by shorts) can signal capitulation and potential bottoms.
Funding rates are one of the most useful on-chain indicators for gauging market extremes. They're more timely than most technical indicators because they reflect the actual cost of being positioned in a particular direction.