Funding Rate

What Funding Rate means

The funding rate is the mechanism that substitutes for an expiry date in perpetual swaps. At scheduled intervals, most commonly every eight hours, the venue calculates a rate from the gap between the perpetual's price and an index of spot prices, plus an interest component. If the perpetual trades above spot the rate is positive and longs pay shorts; if it trades below, shorts pay longs. The payment moves directly between traders, and the venue takes no side in it.

The economic effect is to make it expensive to sit on the crowded side of the market. When leveraged buyers push the contract above spot, they pay a continuing fee for the privilege, which encourages arbitrageurs to sell the perpetual and buy spot until the gap closes. Because of this, funding is widely read as a positioning indicator: persistently high positive funding signals crowded long leverage, a condition that often precedes sharp liquidation-driven flushes lower.

Two practical points matter. First, the cost compounds. A rate of 0.01 percent per eight-hour interval is roughly 0.03 percent a day, or about 11 percent a year, and during excited markets rates can run several times that, which can quietly consume the return on a directional position held for weeks. Second, funding is charged only on positions open at the exact snapshot time, so the payment is discrete rather than continuous, and rates differ between venues for the same underlying.