Funding Rates Explained
TL;DR. A funding rate is a periodic payment between traders holding long and short perpetual futures positions. It keeps the perpetual's price anchored to spot. High positive funding means longs are paying shorts — a sign the market is leaning heavily bullish. High negative funding means shorts are paying longs. As a scalper, funding is context: it tells you how crowded one side of the market is, and crowded trades tend to unwind painfully.
Why perpetuals need funding
A perpetual futures contract never expires. Unlike a dated future that converges to spot at expiry, a perp could drift arbitrarily away from the underlying price without a corrective mechanism. The funding rate is that mechanism.
Think of it like rent. If you hold a long position overnight in a market where everyone is bullish, you pay rent to the shorts for occupying that bullish position. The more one-sided the market, the higher the rent — which nudges some longs to close, pulling the perp price back towards spot.
How it works in practice
Most major exchanges (Binance, Bybit, OKX) settle funding every 8 hours — at 00:00, 08:00, and 16:00 UTC. Deribit settles every 8 hours as well. Some newer exchanges (Hyperliquid) use continuous per-hour funding.
At each settlement:
- If funding is positive → longs pay shorts proportional to position size.
- If funding is negative → shorts pay longs.
- If you are not holding a position at settlement, you pay and receive nothing.
Example: funding rate of +0.01%, position size $10,000. You pay: $10,000 × 0.01% = $1.00 at settlement.
That sounds trivial. But at +0.1% (seen during bull runs), that is $10 every 8 hours — $30/day — on a $10,000 position. Annualised, that is over 100% in funding costs alone. Holding leveraged longs through sustained high funding is expensive.
How it is calculated
The exact formula varies by exchange, but the logic is the same everywhere:
- Measure the premium — the percentage by which the perpetual's price is above or below the spot index.
- Apply a clamp — most exchanges clamp the rate to a maximum (e.g. ±0.75% per 8-hour window) to prevent extreme swings.
- Add an interest rate component — typically a tiny baseline (e.g. 0.01% per 8 hours) reflecting USD/crypto borrowing cost differentials. Often negligible.
When the perp trades above spot → positive funding → longs pay (incentive to short the perp, pulling it down). When the perp trades below spot → negative funding → shorts pay (incentive to long the perp, pushing it up).
What funding signals
Funding is one of the most useful sentiment indicators available to crypto traders, because it reflects real money on the line — not just survey opinions.
| Funding level | What it suggests |
|---|---|
| 0.00%–0.01% | Neutral. Neither side is crowded. |
| +0.03%–+0.07% | Elevated bullish sentiment. Longs are in charge but not extreme. |
| +0.10% and above | Overheated long side. Historical mean-reversion risk increases. |
| −0.01%–−0.05% | Bearish sentiment. Shorts are in charge. |
| −0.10% and below | Extreme fear or short crowding. Potential short-squeeze setup. |
These are thresholds to be aware of, not mechanical entry signals. High funding does not mean price must reverse immediately — it can stay elevated for hours or days in a strong trend. But it does mean the trade is becoming more expensive for the crowded side, and those positions will eventually unwind.
How scalpers use funding
As a directional filter. When funding is extreme (+0.15% or higher), taking new longs becomes a bet against the crowd and a bet against the cost of carry. Many scalpers reduce or avoid long bias in these conditions, favouring shorts or range-trading setups instead.
As a reversal context. When funding spikes to an extreme and then starts fading, it often signals that a crowd is getting squeezed out. Watching funding alongside price and open interest gives a fuller picture of whether a move is driven by new positioning or by existing positions being forced to close.
As a timing tool. The 8-hour settlement creates micro-patterns around settlement times. Some traders avoid holding through settlement when funding is high; others specifically target the volatility that occasionally surrounds it.
Funding + open interest: the four-quadrant model
Funding is more powerful when read alongside open interest (OI) — the total number of active contracts. Together, they tell you not just which way the crowd is leaning, but whether the move has new conviction or is just old positions unwinding.
The canonical framework:
| Price | OI | What is happening | Sustainability |
|---|---|---|---|
| ↑ Rising | ↑ Rising | New longs entering — fresh buying conviction | High |
| ↑ Rising | ↓ Falling | Shorts closing (short squeeze) — not new longs | Low |
| ↓ Falling | ↑ Rising | New shorts entering — fresh selling conviction | High |
| ↓ Falling | ↓ Falling | Long liquidations — forced exits, not new sellers | Often short-lived |
Combined with funding: a rising price + rising OI + neutral/low funding = the strongest possible setup (new money entering, no overheating). A rising price + falling OI + high positive funding = the weakest setup (shorts forced out, crowd already max long, expensive to hold).
This framework is a tool for reading momentum quality, not for timing entries. Use it to assess whether a trend has fuel left or is running on fumes.
Funding across venues
A key feature of funding: it differs across exchanges. Binance, Bybit, OKX, and Deribit can show materially different rates for the same underlying asset at the same moment. This divergence itself is a signal — it reflects different trader bases and positioning on each venue.
When Binance funding is +0.08% and Deribit is +0.01%, it suggests Binance's retail-heavy user base is more bullishly positioned than Deribit's options-focused participants. Understanding which venue's funding is most predictive for price requires experience, but watching multiple venues is always more informative than watching one.
Common misconceptions
"High funding always means a crash is coming." No. Funding can stay elevated for days in a strong trend. It raises the probability of a correction, not the certainty.
"I should short just because funding is high." Not without other confirmation. Funding is context, not a standalone entry signal.
"Funding doesn't matter for scalping because I'm in and out fast." Partly true — if your typical trade lasts 2 minutes, the 8-hour settlement rarely hits you. But funding still matters as a sentiment filter for the direction and quality of your setups.
"Negative funding means the market is about to rally." It increases the probability, particularly at extremes. But sustained negative funding can occur in prolonged bear markets.
Further reading
- Open interest — the other half of the positioning picture.
- Perpetual futures — how perps work structurally.
- Liquidation cascades — what happens when crowded trades unwind violently.
This article is educational content, not investment advice. Trading derivatives carries substantial risk, including total loss of capital. See disclaimer.