A funding fee is the periodic payment exchanged directly between the long and short holders of a perpetual futures contract. It is calculated as notional position value × funding rate, and it is charged at fixed settlement times — on most major venues every eight hours, at 00:00, 08:00 and 16:00 UTC. The exchange does not keep the money. When the funding rate is positive, longs pay shorts; when it is negative, shorts pay longs. The fee exists to keep the perpetual contract's price anchored to the spot price of the underlying asset.
That single mechanism is the reason perpetual futures work at all — and it is also the cash flow that market-neutral crypto strategies are built to harvest. This article covers how the fee is computed, when it hits the account, who receives it, and what it costs in practice.
Funding Fee vs Funding Rate: The Distinction That Matters
The two terms are used interchangeably in most trading forums, and the imprecision causes real confusion when traders try to reconcile their statements.
- The funding rate is a percentage. It is the rate the exchange publishes ahead of each settlement — for example, +0.0100% per eight-hour interval.
- The funding fee is a currency amount. It is what the rate produces once applied to the size of a specific position.
One is the price; the other is the invoice. A trader holding $10,000 of notional and a trader holding $10 million face the same funding rate and wildly different funding fees. Exchange account statements generally label the line item "funding fee," which is why the term carries billing connotations that the rate itself does not.
How a Funding Fee Is Calculated
The formula is consistent across major venues:
Funding Fee = Notional Position Value × Funding Rate at Settlement
Notional position value means the full size of the position — contract quantity multiplied by the mark price — not the margin posted against it. A position opened with 10× leverage on $10,000 of collateral is charged funding on $100,000, not on $10,000. This is the single most common source of surprise in a retail trading account.
The Two Components of the Rate
The rate itself is not set by discretion. On Binance, which publishes the most widely referenced methodology, it combines two inputs:
- A premium index — a measure of how far the perpetual contract is trading above or below a liquidity-weighted spot index, sampled continuously rather than taken from the last traded price.
- A fixed interest component, standardised at 0.01% per eight-hour interval (0.03% per day), representing the assumed financing differential between holding cash and holding the asset.
These are combined with a clamp function that bounds the interest adjustment within ±0.05%, which is why the published rate on a quiet market sits at exactly 0.0100% for long stretches. Exchanges also apply caps and floors, and several switch a contract to hourly settlement once a print hits the cap. The full methodology is set out in Binance's funding rate documentation.
Academic work on perpetual pricing reaches the same structural conclusion from the other direction: the funding payment approximates the average futures–spot spread over the preceding interval, which is what tethers a contract with no expiry to its underlying. A 2022 study of perpetual futures and no-arbitrage pricing documents both the mechanism and the size of the deviations it fails to close.
A Worked Example on $100,000 of Notional
The table below shows the funding fee on a $100,000 notional position at a range of eight-hour rates, with the annualised equivalent calculated as rate × 3 settlements per day × 365.
| 8-hour funding rate | Fee per settlement | Fee per day | Annualised equivalent |
|---|---|---|---|
| +0.0050% | $5.00 | $15.00 | 5.48% |
| +0.0100% (baseline) | $10.00 | $30.00 | 10.95% |
| +0.0300% | $30.00 | $90.00 | 32.85% |
| −0.0100% | −$10.00 | −$30.00 | −10.95% |
A long position pays the amounts shown in the positive rows and receives them in the negative row. A short position is the mirror image. The annualised column is an arithmetic extrapolation of a single print, not a forecast — funding rates move continuously with positioning, and an elevated rate is typically the most transient thing on the screen.
When Funding Fees Are Charged
Funding is not accrued continuously. It is a discrete event, and only positions open at the settlement timestamp are affected.
- Standard cycle: every eight hours, at 00:00, 08:00 and 16:00 UTC on most centralised venues.
- Accelerated cycle: several exchanges shorten the interval — commonly to one hour — once the previous settlement reaches the cap or floor, to restore the price anchor faster during stressed conditions.
- Venue variation: some perpetual markets settle hourly by default, and some decentralised venues use much wider caps. The settlement schedule is a contract specification, not a market convention, and it should be read per instrument.
A position opened at 08:05 and closed at 15:55 UTC crosses no settlement and is charged nothing. A position held for thirty seconds across 16:00 UTC is charged in full. See the funding interval definition in our glossary for how this interacts with annualised rate quoting.
Who Pays Whom: Positive and Negative Funding
| Funding rate | Perpetual price relative to spot | Direction of payment | Market reading |
|---|---|---|---|
| Positive | Trading at a premium | Longs pay shorts | Leveraged demand skewed long |
| Negative | Trading at a discount | Shorts pay longs | Leveraged demand skewed short |
| At or near zero | Closely tracking spot | Minimal transfer | Balanced positioning |
Crypto markets have historically spent the majority of their time in positive funding, reflecting a structural long bias among leveraged participants. That is a tendency observed across market cycles, not a rule, and it is not a condition any strategy can assume will persist.
What a Negative Funding Rate Signals
A negative funding rate means the perpetual is trading below spot and short holders are paying longs to maintain their positions. It usually appears after sharp drawdowns, during capitulation, or when hedging demand is heavy. For a directional trader it is a positioning signal. For anyone running a short-perpetual carry position, it is a cost rather than an income — the payment reverses, and a strategy that was collecting funding begins paying it. Any serious treatment of funding-based strategies has to account for that reversal explicitly rather than assuming one sign of the rate.
What the Funding Fee Means for a Delta-Neutral Position
For a directional trader, the funding fee is friction — a holding cost that compounds three times a day against the position. For a market-neutral strategy, it is the output.
The construction is straightforward in principle: hold the asset in spot, hold an offsetting short in the perpetual, and the position carries no net exposure to the price of the underlying. Price moves cancel between the two legs. What remains is the funding payment flowing from longs to shorts — which the short perpetual leg receives at each settlement. This is the cash-and-carry structure applied to a contract that never expires, and it is the mechanism behind funding rate arbitrage as a strategy.
The difficulty is not in describing the trade. It is in the fact that the income is variable, the rate can invert, and the execution has to survive the settlement cycle without the hedge slipping. How those positions are sized, hedged and bounded is covered in our delta-neutral strategy overview.
Three Costs That Erode Funding Fee Income
Gross funding and net funding are different numbers. The gap between them is where most self-managed carry positions underperform their own spreadsheets.
- Execution costs on both legs. Opening a spot position and an offsetting perpetual short means crossing two spreads and paying two sets of taker fees, then repeating the exercise on exit. At a baseline funding rate of 0.0100% per interval, round-trip costs can consume several days of accrued income before the position is net positive.
- Margin and collateral drag. The perpetual leg requires maintenance margin, and that collateral has to be large enough to absorb adverse moves without triggering liquidation. Capital held in reserve against that risk is capital not earning the spread.
- Rate inversion. Funding that turns negative converts the income stream into an outgoing payment. A position sized for an extended holding period has to be able to absorb negative intervals without being forced to unwind at the worst moment.
None of these are exotic risks. They are the ordinary mechanics of running the trade, and they are the reason the gap between a quoted funding rate and a realised return is usually wider than the headline suggests.
Frequently Asked Questions
Is the funding fee charged on margin or on position size?
On notional position size. A $100,000 position opened with $10,000 of collateral is charged funding on the full $100,000. Leverage amplifies the fee in the same proportion it amplifies exposure.
Can I avoid the funding fee by closing before settlement?
Yes. Funding applies only to positions open at the settlement timestamp. Closing beforehand avoids the charge — and, equally, forfeits any payment that would have been received.
Do all exchanges charge funding at the same time?
No. Eight-hour intervals at 00:00, 08:00 and 16:00 UTC are the most common convention, but intervals, caps and formulas differ by venue and by contract. Rates can be positive on one exchange and negative on another simultaneously.
Is a high funding rate good or bad?
It depends entirely on the side held. A high positive rate is a cost to long holders and income to short holders. It also indicates crowded long positioning, which has historically been associated with elevated liquidation risk.
Is the funding fee a trading fee?
No. Trading fees are paid to the exchange. Funding fees are transferred between traders — the venue facilitates the transfer rather than collecting it.
Where to Watch Funding Rates
Funding rates are published ahead of each settlement and can be tracked across venues in real time. Current rates across major perpetual markets are available on our live markets page, alongside the instruments the rates apply to.
Understanding the funding fee is the first step toward understanding why market-neutral strategies on perpetual futures exist at all. The payment is real, it is observable, and it accrues to whichever side of the contract the market is paying to hold. Capturing it consistently — net of costs, through rate inversions, across venues — is a different exercise entirely, and one we cover in detail in our guide to how funding rate arbitrage works.
This article is published for informational purposes and does not constitute investment advice or an offer to transact. Funding rates are variable and can turn negative. Past market conditions are not indicative of future results, and capital is at risk.
This article is for information only and is not investment advice. Past performance does not guarantee future results.
