What a funding rate actually pays you — or costs you
A perpetual futures contract never expires, so it needs a different way to stay anchored to the spot price.
At a glance
- A perpetual future has no expiry date, so it uses a periodic payment between longs and shorts to stay near spot price.
- When the rate is positive, longs pay shorts; when negative, shorts pay longs — it is a transfer, not a fee to an exchange.
- A persistently high rate signals crowded positioning on one side, which is itself useful information about sentiment.
A traditional futures contract expires on a set date, at which point its price must converge with the spot market. A perpetual future, the instrument most crypto derivatives volume actually trades on, never expires — so exchanges needed a different mechanism to stop its price drifting away from spot indefinitely.
That mechanism is the funding rate: a periodic payment, typically every eight hours, exchanged directly between traders holding long positions and traders holding short positions. The exchange itself is not a party to this payment — it is a transfer from one side of the market to the other.
When the perpetual trades above the spot price, the funding rate turns positive and longs pay shorts, which creates an incentive to short and pulls the price back down. When it trades below spot, the rate goes negative and shorts pay longs, pulling the price back up. The rate is the market's own correction mechanism, priced continuously.
A funding rate that stays persistently high in one direction is telling you something beyond the payment itself: positioning is crowded on one side, and that crowd is paying a real, recurring cost to stay there. Extended periods of extreme funding have historically preceded sharp reversals, as the cost eventually outweighs the conviction holding the position open.
Key terms
- Perpetual future
- A futures contract with no expiry date, kept near spot price by a periodic funding payment.
- Funding rate
- The periodic payment exchanged between long and short holders of a perpetual contract.
- Open interest
- The total value of derivative positions currently open on an exchange, a measure of how crowded a trade is.
Frequently asked
Do I pay funding if I don't hold a perpetual position overnight?
Funding is typically charged at fixed intervals, commonly every eight hours, regardless of how long you've held — check the specific exchange's schedule.
Can the funding rate go to zero?
Yes, briefly, when long and short demand are closely balanced, though it rarely stays there for long in an actively traded market.
Is a negative funding rate good for me if I'm long?
It means you're being paid to hold the long position rather than paying, yes — though it usually signals bearish positioning is crowded on the short side.