Why perpetuals need funding
Traditional futures have an expiry date that helps connect futures and spot pricing at settlement. Perpetual contracts do not expire, so exchanges use mechanisms including funding to encourage alignment.
Who pays whom?
In the common structure, positive funding means long-position holders pay short-position holders. Negative funding means short-position holders pay long-position holders.
The exchange facilitates the transfer; funding is generally exchanged between market participants rather than being a directional trading signal.
How the rate is determined
Funding calculations commonly incorporate a measure of perpetual-contract premium or discount relative to a reference price and may include an interest component.
Exact formulas, caps, floors and settlement intervals vary by exchange and contract.
Do not assume every exchange uses the same funding formula or interval.
What extreme funding can indicate
Persistently positive funding can reflect strong demand for leveraged long exposure; persistently negative funding can reflect strong demand for short exposure.
However, positive funding does not automatically mean price will fall, and negative funding does not automatically mean price will rise.
Funding as a position cost or receipt
A trader holding a position across a funding settlement may pay or receive funding depending on position direction and the applicable rate.
This means funding can materially affect the economics of leveraged positions held for long periods.
Funding intervals and formulas differ
Crypto exchanges can use different funding intervals, interest components, premium calculations, clamps and caps. The displayed rate should therefore be interpreted using the contract's current methodology.
A rate quoted for one venue or perpetual contract should not automatically be assumed to apply to another.
Be careful when annualizing funding
Traders sometimes multiply a periodic funding rate to estimate an annualized figure. That calculation assumes the rate remains similar across future funding periods, which may not happen.
Funding can change sign and magnitude as perpetual pricing and market conditions change, so annualized figures are scenarios rather than guaranteed future costs.
Funding depends on exposure and holding periods
A trader only pays or receives funding for applicable settlement times under the venue's rules. Position notional, the applicable funding rate and the number of funding events therefore matter.
For leveraged positions held over time, funding can materially affect realized performance even when the underlying price eventually returns near the entry.
Positive or negative funding can remain elevated while a trend continues. Funding describes perpetual-market conditions, not the exact timing of the next price move.
Key takeaways
- Funding helps perpetual contracts track their reference market.
- Positive funding generally means longs pay shorts; negative funding generally means shorts pay longs.
- Formulas and intervals can vary by contract and exchange.
- Funding is useful context but not an automatic contrarian signal.
Sources & further reading
This lesson is educational material. Market structure, exchange rules, fees, margin requirements and derivatives mechanics can differ by venue and can change over time. Verify current rules with the venue you use.