Perpetual futures, and the funding rate that holds them to spot

A perpetual future is a futures contract with no expiry, held close to the spot price by a funding payment between longs and shorts, which makes funding a cost of time rather than a fee on trading.

A perpetual future is a futures contract that never expires. You can hold it indefinitely, which is the whole appeal and also the thing that creates the mechanism people find confusing.

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The problem an expiry normally solves

An ordinary futures contract converges on the spot price because it settles on a known date. Remove the expiry and nothing forces the two together, so the contract can drift away from the asset it is supposed to track. Something else has to do that job.

That job is the funding rate

At regular intervals, one side pays the other. When the perpetual trades above spot, longs pay shorts, which makes holding a long more expensive and pulls the price down. When it trades below, the payment reverses. It is a continuous nudge rather than a settlement, and it is why the price stays close to spot without ever being forced there.

What that means if you hold one

Your profit is not only the price moving your way. If you hold a long while funding is positive, you are paying to hold it, every interval, whether or not the price moves. Over a long enough hold that cost can exceed the move you were right about. Funding is not a fee on trading, it is a cost of time.

Reading it live

The funding column below is the real, current rate on each market. Positive means longs are paying shorts right now. Watching it move is a faster way to understand the mechanism than any explanation, including this one.

How the funding payment is actually calculated

The rate is derived from the gap between the perpetual price and an index of spot prices, and it is charged at fixed intervals rather than continuously. Exactly how it is derived differs by venue, so a rate on one exchange is not directly comparable to a rate on another without checking the interval and the formula. The figures on this page are one venue's, at that venue's interval, which is why the interval is labelled next to the number.

Open interest, which the next section leans on

Open interest is the number of contracts currently open and not yet closed. It is not volume. Volume counts contracts traded in a period; open interest counts positions still standing at the end of it. Two traders opening a new position between them creates one contract and open interest rises. One opening against one closing simply transfers a contract and it does not move. Two closing removes one and it falls. So a busy day where positions mostly changed hands shows large volume and flat open interest, and that is the two numbers measuring different things rather than a contradiction.

What open interest says that the price does not

Whether a move arrived with new money or with people leaving. A price rising while open interest rises means positions were being opened into it. The same rise with open interest falling means it was substantially shorts closing out. The price change is identical in both cases and the second is the weaker of the two. One caution: the figure is denominated in contracts, and a contract is not the same size in every market, so comparing the raw number between two markets compares their specifications as much as their activity. Read a market against its own recent range, or convert to notional first.

What a very high funding rate usually means

That positioning has become crowded on one side, not that the price is about to move. A sharply positive rate means longs are paying meaningfully to remain long, which is information about traders rather than about the asset. It is most useful read alongside open interest: high funding with rising open interest is a crowded trade being built, while high funding with falling open interest is often a crowded trade being unwound.

Live, right now, on this page

MarketPriceFunding24h volume
BTC$83,316.500.0013%$247,863,521
ETH$2,542.750.0013%$203,054,026
SOL$110.990.0013%$56,769,452
HYPE$85.950.0013%$1,616,716

Live perpetual markets with their current funding rates, read at render. Positive funding means longs are paying shorts right now. Read at 2026-10-12 12:18 UTC; accurate as of that time and not afterwards.

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Common questions

What is open interest on a perpetual?

The number of contracts currently open and not yet closed. It counts positions still standing rather than trades that happened, which is why a day of heavy trading can end with open interest exactly where it started.

What is the difference between open interest and volume?

Volume counts contracts traded in a period; open interest counts contracts still open at the end of it. Two traders opening a new position raises it, one opening against one closing leaves it unchanged, and two closing lowers it.

How is a perpetual future different from an ordinary future?

It never expires. An ordinary future converges on the spot price because it settles on a known date. A perpetual has no settlement date, so a funding payment between longs and shorts keeps its price close to spot instead.

Who pays funding on a perpetual future?

It depends on where the perpetual trades against spot. When it trades above spot, longs pay shorts, and when it trades below, shorts pay longs. The payment is charged at fixed intervals, and the exact formula differs by venue.

What does a very high funding rate mean?

That positioning is crowded on one side, not that the price is about to move. It is most useful read alongside open interest: high funding with rising open interest is a crowded trade being built, while high funding with falling open interest is often one being unwound.

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