What exactly is the funding rate?

On the spot market, you buy a bitcoin and it is yours. On a perpetual contract, you own nothing: you take a position, long or short, with no expiry date. That contract should normally trade at the same price as spot. In practice it drifts away constantly, because demand is not the same on both sides.

The funding rate is the mechanism that glues the two back together. Every hour, or every eight hours depending on the platform, a payment is exchanged between long and short positions. It is not a fee taken by the exchange: the money moves from one trader to another, and the platform takes nothing along the way.

When the rate is positive, long positions pay short positions. When it is negative, it is the other way round. The amount is calculated on the position value, not on the margin deposited.

Who pays whom, concretely

A simple example, without pretending to be accurate to the cent.

You hold a short position of $10,000 on a perpetual, with a funding rate of 0.01% per eight hours. On each payment you receive $1. Over a day, three payments, so $3. Over a year, if the rate stays the same, about $1,095, which is close to 11% of the position size.

On the other side, the long trader holding the same position pays those $1,095. They pay because they want to stay long with leverage, and that desire has a price. It is the same principle as rent: the occupant pays, the financier collects.

Where the rate comes from: two components

The rate is not set by hand. It combines two elements.

The premium. It is the gap between the perpetual price and the spot price. If the perpetual trades above spot, the premium is positive and the rate rises to discourage buyers. If the perpetual trades below, the rate falls, and can turn negative.

The interest component. It represents the cost difference between holding dollars and holding crypto. On Hyperliquid it is set at 0.01% per eight hours, meaning 0.00125% per hour, which corresponds to about 11.6% per year paid to sellers. Other platforms use a similar value.

Add the two, apply a safety cap, and you get the rate for the period. Platforms cap that rate to avoid runaway moves: on Hyperliquid the cap depends on each market's liquidity.

How often you pay

This is the detail that changes everything for the calculation, and it varies from platform to platform.

On Hyperliquid, funding is paid every hour. The displayed rate is the rate for one hour, not for one day. A rate of 0.00125% per hour gives 0.03% per day, and about 11% per year if it does not move.

On Bitget and most centralised platforms, the payment happens every eight hours, at 00:00, 08:00 and 16:00 UTC. The displayed rate is the rate for that eight-hour payment.

Confusing the two is the most common mistake. A rate of 0.01% per eight hours does not represent the same annual return at all as a rate of 0.01% per hour: in the first case it is about 11% per year, in the second about 88%.

Why this mechanism exists

Without funding, a perpetual could trade 3% above spot for weeks. Arbitrageurs would eventually correct it, but slowly, and the contract would lose its function: tracking the asset price.

Funding speeds up that correction. When the perpetual drifts, the rate becomes painful for the crowded side, which reduces its position or moves to the other side. The price snaps back to spot, and the market stays usable.

That is also why funding is a closely watched sentiment indicator: a very positive rate signals many leveraged buyers, a negative rate signals the opposite.

What it changes for you

Three practical consequences.

First: funding is a cost or an income depending on your position. If you are long in a market where everyone is long, you pay. If you are short, you collect. It is neither a bonus nor a punishment, it is the price of equilibrium.

Second: the cost is not proportional to your margin. It is calculated on the position size. High leverage therefore increases the funding paid or received relative to the capital deposited, in both directions. This is one of the reasons leverage is dangerous: it amplifies a cost that does not appear in the price.

Third: the rate moves constantly. A yield computed on today's rate has no predictive value. You have to look at the average over several weeks, and accept that it can fall, including below zero.

A worked example, on both frequencies

Take a short position of $5,000 and a rate of 0.01%.

On Bitget, that rate applies three times a day. You collect $0.50 per payment, so $1.50 per day, about $45 per month and $547 over a year, which is close to 11% of the position.

On Hyperliquid, if the hourly rate is 0.01%, you collect $0.50 per hour, so $12 per day and $4,380 over a year. That is not the same thing, and yet the displayed number is identical.

That is why you should always check two things before comparing two rates: the payment frequency, and the currency the rate is expressed in. An hourly rate and an eight-hour rate are never directly comparable.

The trap of the annualised rate

Platforms often display an annual equivalent, convenient but misleading. An annualised rate of 30% computed on one hour can turn negative during the day. And a spectacular annualised rate on a small pair almost always comes with liquidity and volatility risk that cancels the advantage.

The right reading is that of a variable income, not a bank interest rate. On markets where funding is high, it is often because the risk is high too.

Delta-neutral carry, in two sentences

Positive funding is paid to sellers. To collect it without betting on price, you buy the asset on spot and sell the same amount on the perpetual. The two legs cancel out on price: a rise gains on spot and loses on the short, a fall does the opposite. What remains is the funding.

That mechanics does not remove risk, it moves it. Funding can turn negative and make you pay. The short leg can be liquidated if price rises sharply. And your funds depend on the solidity of the platform holding them.

What to remember

The funding rate is not a magic yield, it is a price. The price leveraged traders pay to keep their position. It is read at the platform's frequency, it is calculated on the position size, and it changes all the time.

An investor who understands this stops looking for the highest rate of the day and starts looking at the average, the stability, and what happens when the rate flips.

Sources

This article is for information only. It is not investment advice and promises no return. Trading derivatives carries a high risk of capital loss.