What a funding rate is

Most crypto leverage is traded through perpetual futures, often called perps. An ordinary futures contract has an expiry date, and on that date its price has to meet the spot price. A perpetual never expires, so something else has to stop its price drifting away from the real market. Funding does that job.

The idea came from BitMEX, which launched its perpetual Bitcoin swap in May 2016. Every few hours, traders on one side of the contract pay traders on the other side:

  • Positive funding: the perpetual is trading above spot. Longs pay shorts. Holding a long becomes more expensive, holding a short earns a small income, and the price is nudged back down toward spot.
  • Negative funding: the perpetual is trading below spot. Shorts pay longs, and the pressure runs the other way.

The exchange does not keep this money. It moves directly between traders. And it is charged on the notional value of the position, meaning its full size, not the margin you posted. With 10x leverage, a 0.01% funding payment costs you 0.1% of your own capital.

How Binance calculates it, and why 0.01% keeps appearing

Binance settles Bitcoin funding every eight hours, at 00:00, 08:00 and 16:00 UTC. Its published formula has two parts:

Funding Rate = Premium Index + clamp(Interest Rate - Premium Index, -0.05%, +0.05%)

The premium index measures how far the perpetual trades from the spot price index, averaged over the eight hours. The interest rate is fixed by Binance at 0.03% a day, which is 0.01% per eight-hour interval. The clamp limits how far the second term can move.

Work through the arithmetic and a useful rule falls out. Whenever the average premium sits between about -0.04% and +0.06%, the two premium terms cancel and funding settles at exactly 0.0100%. That is why the same number appears so often. It is the default for a market in balance, and it is slightly positive by design, because the formula assumes borrowing dollars costs more than borrowing Bitcoin.

So read Binance funding against 0.01%, not against zero. Above 0.01% means the perpetual traded at a real premium and longs were paying up. Between zero and 0.01% means it traded at a small discount. Below zero means the discount was deep enough that shorts paid.

What it costs, for a position that stays the same size:

Funding per 8 hours$10,000 long pays per dayPer year, if unchanged
0.0050%$1.50about $548
0.0100%, the default$3.00about $1,095
0.0500%$15.00about $5,475
0.1000%$30.00about $10,950

For a short, flip the signs: the same numbers are income. The current cap for Bitcoin on Binance, from its public funding info endpoint, is plus or minus 0.30% per interval.

Seven years of Bitcoin funding, measured

We downloaded every funding settlement for Binance's BTCUSDT perpetual from its first on September 10, 2019, to 16:00 UTC on September 24, 2026: 7,715 settlements. The table adds up each calendar year. The second column is what a $10,000 long held all year at constant size would have paid, before trading fees.

YearFunding paid by a $10,000 longSettlements above 0.01%Settlements below zero
2020$1,724294 of 1,09814.3%
2021$3,061470 of 1,0957.3%
2022$416022.1%
2023$7876910.1%
2024$1,1962138.4%
2025$513012.9%
2026, to Sep 24$215026.1%

Two things stand out. The cost of holding leverage has collapsed: 2021 was the year of 10x retail longs, and the rate topped 0.10% per interval 74 times, on 43 different days. And the share of negative settlements in 2026 is the highest of any full or partial year in the data.

Across the whole history the average settlement was 0.0106%, very close to the default, and 35.2% of all settlements were exactly 0.0100%. Ethereum's perpetual tells the same story: its longs paid 37.5% of notional in 2021 and 1.35% so far in 2026.

1,962 settlements without going above the default

The last time Binance Bitcoin funding settled above 0.01% was 0.0111% at 16:00 UTC on December 9, 2024. Since then there have been 1,962 settlements, about 21 and a half months, and none of them went higher. In rule terms: for 21 months, the perpetual has not once traded at an average premium of more than roughly 0.06% over spot through a full eight-hour window.

That stretch includes Bitcoin's all-time high. Binance's perpetual reached $126,208 on October 6, 2025. Compare the funding around that top with the run-up to the 2021 peak:

WindowAverage settlementHighest settlement
Mar 1 to Apr 14, 20210.0465%0.1486%
Oct 1 to Oct 7, 2025, the record high0.0085%0.0100%
Last 30 days to Sep 24, 20260.0062%0.0100%

At the 2025 record, longs were paying less than the default. Four and a half years earlier they paid five times as much on average, with individual readings fifteen times higher.

We have seen this matter before. On August 21 several outlets reported Bitcoin funding at a "20 month high" and treated it as a warning sign. On Binance that reading was exactly 0.0100%, the default. When a 20-month high equals the resting value, what it mostly tells you is how quiet the series has been.

When shorts paid: February to April 2026

The other side of the story is negative funding. Since 2019 only three calendar months had a negative average on Binance Bitcoin funding before this year: March 2020 (the pandemic crash), July 2021 and November 2022 (the FTX collapse). None of them came back to back.

In 2026 it happened three months running:

MonthAverage funding, annualisedNegative settlementsBitcoin, month-end close
February 2026-0.83%45 of 84$66,937
March 2026-1.09%52 of 93$68,242
April 2026-2.16%58 of 90$76,305
May 2026+2.72%27 of 93$73,653

Bitcoin rose about 14% from the end of February to the end of April, and funding became more negative as it rose. If negative funding simply meant traders were betting on a fall, that is the opposite of what you would expect.

CoinDesk reported one explanation at the time. 10x Research said the 30-day average funding rate had reached minus 5% against a historical norm of plus 8%, measured across its own set of venues, and argued the cause was structural hedging rather than bearish conviction: funds shorting perpetuals to neutralise Bitcoin they held elsewhere. We cannot verify who was shorting. What our data does show is that the discount persisted through a rising market, which fits a hedging story better than a panic story.

Does extreme funding predict the next move?

The folklore says very high funding marks a top and deeply negative funding marks a bottom. We tested it on 2,542 days of Binance data, adding up each day's three settlements and comparing that with Bitcoin's price change over the following 30 days.

DaysMedian next 30 daysHigher after 30 days
All 2,542 days+1.8%55%
Highest 5% of funding, 128 days0.0%50%
Lowest 5% of funding, 127 days+9.1%72%

The low-funding row looks impressive, and it deserves suspicion. Those 127 days are bunched into a handful of episodes, 37 of them in 2020 around the pandemic crash and 28 in 2022, so the real sample is closer to a dozen events than to 127 independent trials. The high-funding days are even more concentrated: 75 of the 128 fall in 2021.

The broader measure is flat. The correlation between a day's funding and the next 30 days' return is negative 0.06, which is close to no relationship at all. The correlation between the past 30 days' funding and the past 30 days' price change is 0.34. Funding mostly describes what the price has already done.

How to read funding yourself

Know your baseline. On Binance and most exchanges that copied its formula, 0.01% per eight hours is neutral. A reading of 0.01% is not a sign of leverage, and a headline that calls it a high has usually picked a short window.

Count the cost before you open the trade. Multiply notional by the rate by the number of settlements you expect to hold through. At the default, a leveraged long held for a month pays about 0.9% of notional. At 10x that is 9% of your margin, before a single price move.

Check the interval. Bitcoin settles every eight hours on Binance, but some smaller contracts settle every four hours or even every hour. The same displayed rate then costs two or eight times as much per day.

Treat negative funding as a question. It can mean crowded shorts, or it can mean hedgers who are not betting on direction at all. The price action alongside it, and flows elsewhere, tell you which. Our guide to liquidations covers what happens when a crowded side is forced out, and the taker buy share guide explains a spot-market measure that is harder for hedgers to move.