Perpetual futures never expire, so they need a mechanism to stay tethered to spot: the funding rate. Here is what it is, who pays whom, how a tiny 8-hour percentage compounds into a serious annual cost, and how to read it as a crowd-sentiment gauge.
Want to see live funding before you trade?Trade on Bybit — deep liquidity, transparent funding, low fees, up to a $30,000 welcome bonus.Open Bybit account →A traditional futures contract has an expiry date, and as it approaches, arbitrage drags its price toward spot. A perpetual future has no expiry, so it needs a different anchor. That anchor is the funding rate: a small periodic payment exchanged directly between long and short traders, typically every 8 hours (00:00, 08:00 and 16:00 UTC on most venues).
The logic is simple. When the perpetual trades above the underlying spot price, funding is positive and longs pay shorts — which makes holding a long more expensive and discourages the crowd, nudging the perp back down toward spot. When the perp trades below spot, funding turns negative and shorts pay longs, pulling the price back up. Funding is the invisible spring that keeps a no-expiry contract from drifting away from the real market. Crucially, the exchange is only a courier here — the payment moves from one trader to another, not to the platform.
The sign of the rate tells you everything:
The practical corollary: being on the unpopular side can earn you funding. A patient trader who is long while funding is deeply negative gets paid to hold — the payment lands in your wallet at each interval. This is the basis of delta-neutral "funding harvest" strategies, where a trader holds a perp position on the paid side and hedges the price risk in spot, collecting funding as yield.
Funding rates are quoted per interval, and an 8-hour interval means three payments a day. A number that looks trivially small per 8 hours becomes a headline percentage once you annualise it. The conversion is straightforward:
| Funding per 8h | × 3 = per day | × 365 = per year |
|---|---|---|
| 0.01% (baseline) | ~0.03% | ~11% |
| 0.03% | ~0.09% | ~33% |
| 0.05% | ~0.15% | ~55% |
| 0.10% (hot market) | ~0.30% | ~110% |
Simple (non-compounded) annualisation, funding held constant. Real funding fluctuates every interval, so treat these as a rate-of-drag guide, not a forecast.
Say you go long $10,000 notional of BTC using $1,000 margin (10x). Funding sits at a steady 0.05% per 8h and you are on the paying side. Funding is charged on notional, not on your margin, so each payment is 0.05% × $10,000 = $5. That is $15 per day and $105 over a week.
On your $1,000 margin, $105 in a week is a 10.5% drag — before the price has moved a cent. Because funding is deducted from your margin balance, it also nudges your liquidation price closer with every payment. This is the trap of high leverage plus sustained positive funding: the position can be "right" on direction and still bleed out through funding.
Funding calculator →Time to liquidation →Beyond its cost, funding is one of the cleanest reads on positioning. Because a positive rate literally means longs outnumber and outbid shorts, very high positive funding is a crowded-long warning. When everyone is paying up to be long, there are fewer buyers left to push price higher and a larger pool of over-leveraged positions primed for a long squeeze. Extreme readings often precede sharp reversals — a classic contrarian signal.
The mirror holds too: deeply negative funding means shorts are crowded and paying to stay short, which can mark capitulation lows where a short squeeze becomes likely. Funding is not a standalone entry trigger, but persistent extremes are a strong context flag — cross-check it against open interest and price structure rather than acting on it alone.
Live funding rates →Scalps — negligible. Funding is only charged at the interval snapshot. Open and close between snapshots and you pay nothing. For trades lasting minutes to a couple of hours, funding is dwarfed by trading fees and spread; it barely deserves a line in your plan.
Multi-day holds — material. Hold a position across many intervals and funding compounds into a real cost that must be earned back before you see profit. Factor it straight into your break-even: your target move has to cover entry and exit fees plus expected funding for the number of intervals you plan to hold.
A quick rule: break-even move ≈ round-trip fees + (funding per interval × intervals held). If you plan to hold a 0.05%/8h position for two days (6 intervals), that is ~0.30% of funding to overcome on top of fees — a real hurdle on a low-conviction trade, and a reason to check funding before you enter, not after.
Funding calc →More guides →It depends on the sign of the rate. When funding is positive (the perp trades above spot because longs are crowded), longs pay shorts. When funding is negative (perp below spot, shorts crowded), shorts pay longs. The payment moves directly between traders every funding interval, usually every 8 hours; the exchange keeps none of it.
Multiply the 8-hour rate by three to get the daily cost, then by 365 for the annualised figure. A typical 0.01% per 8 hours is about 0.03% per day, or roughly 11% per year. An elevated 0.1% per 8 hours is about 0.3% per day, or roughly 110% per year. Funding is charged on position notional, so leverage magnifies its drag on your margin.
Barely. Funding is only charged at each interval snapshot, so a trade opened and closed between snapshots pays nothing. For scalps lasting minutes to a few hours it is usually negligible versus trading fees and spread. Funding becomes material only when you hold across several intervals — multi-day swing and position trades.
⚠️ Educational only — not financial advice. Leverage trading can lose your entire deposit.