If you hold a perpetual future for more than a quick trade, you will meet the funding rate. It is a small payment that flows between traders at regular intervals, and depending on which side of the market you are on, you either pay it or receive it.
Funding sounds like a fee. It is not one. No platform collects it and nobody profits from it except the trader on the other side. It is a mechanism, and once you understand what it is for, it is actually elegant. This guide explains it in plain words.
Why funding exists at all
A normal futures contract has an expiry date, and expiry is what keeps it honest: when the contract settles, its price has to meet the real price. A perpetual future has no expiry. You can hold it forever. That convenience creates a problem, because with no settlement day there is no force pulling the perp's price back to the price of the thing it tracks.
Funding is the replacement force. When traders push the perp's price above the underlying, funding makes longs pay shorts, which rewards selling and punishes buying, nudging the price back down. When the perp trades below the underlying, the flow reverses and shorts pay longs. The tether never sleeps, which is how a Micron market can track Micron's price at 3am on a Sunday while the Nasdaq is closed. The perps guide covers the rest of the instrument.
Who pays whom, and why you might collect
The rule of thumb is simple. When the perp trades above the underlying price, the funding rate is positive and longs pay shorts. When it trades below, the rate is negative and shorts pay longs. Which side receives depends entirely on where the perp sits relative to the real price.
That means funding can be earned, not just paid. If everyone is piling into the long side of a hot market and you take the short side, the crowd pays you at every interval for as long as the imbalance lasts. Traders sometimes hold the unpopular side of a market specifically to harvest funding. It is not free money, since the price can still move against the position, but the payment is real and it lands in your margin.
How big the payments are
Individual funding payments are usually tiny fractions of a percent of your position size. On Hyperliquid, funding settles every hour, and most of the time most markets sit at small, unremarkable rates. For a position you hold for a day, funding is often a rounding error.
Two things change that picture. The first is time. Small payments every hour, for weeks, compound into a real cost. The second is crowding. When one side of a market gets very popular, the rate can climb well above its usual level, and holding the popular side through that stretch gets expensive in a way that surprises people. Long-held positions on the crowded side of a hot market are where funding actually bites.
How to treat funding as a trader
For short-term trades, note the rate and move on. For anything you plan to hold, check the current funding rate on the market before you open and treat it as a carrying cost, the same way you would treat interest on a loan. A position that is right about direction can still lose to funding if it is early and stubborn.
Funding is also information. A persistently high rate tells you the market is crowded on one side, and crowded trades are the ones that unwind hardest. And the standard perp disclosures still apply: positions carry liquidation risk, and what you are trading is a derivative that tracks a price, not the underlying asset. You can see funding at work on any market Based connects you to, all of them running 24/7 on Hyperliquid.