Direct answer：Funding is a payment exchanged between long and short perpetual holders at specified settlement times, not a fixed borrowing rate. A displayed rate is a timestamped observation, not a promise for the next interval or the full holding period. Multi-interval estimates should use each actual rate or clearly labeled scenario assumptions.
The sign determines who pays
Funding helps keep a perpetual contract aligned with its spot index. Under OKX's published rules, longs pay shorts when the rate is positive and shorts pay longs when it is negative; the platform facilitates the exchange between position holders.
A position generally pays or receives an interval only if it remains open at the settlement timestamp. The interval is not always eight hours: some contracts use one-, two-, or four-hour periods, and a venue can adjust the schedule with market conditions.
- Positive rate + long: pay; positive rate + short: receive.
- Negative rate + long: receive; negative rate + short: pay.
- Funding is separate from opening and closing trading fees.
Single-interval and multi-interval formulas
Let Vᵢ be position value at settlement i, fᵢ that settlement's actual funding rate, and d the direction coefficient: +1 for a long and −1 for a short. A positive output is a payment; a negative output is a receipt.
Repeating the current snapshot over future intervals is only a scenario. For a reproducible total, store each interval's rate, position value, settlement time, and source, then sum them.
One interval = Vᵢ × fᵢ × dMultiple intervals = Σ(Vᵢ × fᵢ × d)Constant-value scenario = V × f × interval count × dA live snapshot is not a future promise
Current, predicted, and historical rates are different data. A value shown now can change before settlement; history only describes completed observations; extending one snapshot for seven or thirty days is a stress scenario, not a forecast.
A result should show observation time, contract, rate unit, settlement interval, and whether fallback data is in use. Without those fields, it should not be described as an exact live cost.
| Data | It can answer | It cannot answer |
|---|---|---|
| Current snapshot | Rate displayed at observation | Guaranteed settlement rate |
| Historical rates | Completed past observations | Next interval's sign or size |
| Fixed-rate scenario | Cost if the rate stays fixed | Actual future payment or receipt |
| Per-interval records | Reproducible known-period sum | Unsettled future periods |
Cross-venue comparison requires aligned inputs
To compare Binance, OKX, or another venue, align contract direction, observation time, position-value definition, and actual settlement interval. An eight-hour rate cannot be ranked directly against a one-hour rate by raw magnitude.
Venues may change caps, floors, settlement intervals, and rate inputs. Even with the same rate, a changing mark price changes position value at settlement. Closing before settlement generally avoids that interval, but the current contract rules remain authoritative.
- Normalize the time unit before comparing per-period or annualized scenarios.
- Preserve the sign so funding received is not mislabeled as cost.
- Recheck the contract countdown, rate, and interval immediately before trading.
Worked example: Reproducible example: repeating one snapshot for three intervals
- Position value V: 10,000 USDT, assumed constant for three intervals
- Side: long, so d = +1
- Observed scenario snapshot f: +0.01% = 0.0001
- Scenario interval count: 3
- One interval paid = 10,000×0.0001×1 = 1 USDT
- Three-interval scenario = 10,000×0.0001×3×1 = 3 USDT
- For a short under the same rate, d = −1 and the total is −3 USDT, a 3 USDT receipt.
If value and the +0.01% rate truly stay unchanged for all three intervals, the long pays 3 USDT. This is conditional, not a forecast.
Frequently asked questions
Is a positive funding rate always an extra cost?
It depends on side. A positive rate is generally paid by longs and received by shorts; a negative rate reverses the flow.
Do all perpetuals settle every eight hours?
No. Eight hours is common, but some contracts use one, two, or four hours and venues can adjust schedules. Use the current contract countdown and rules.
Can I multiply today's rate by seven holding days?
You can label that as a fixed-rate stress scenario, not a seven-day forecast. Rate, position value, and settlement interval can all change.
Do I pay funding if I close before settlement?
OKX states that a position closed before settlement generally does not pay or receive that interval. Exact timing and processing remain subject to the current contract rules.
Is funding the same as a trading fee?
No. Trading fees are generally charged on fills. Funding is exchanged between long and short holders at settlement and may be paid or received.
Can funding predict price direction?
One rate reflects the current perpetual-versus-index relationship and positioning demand. It cannot by itself guarantee future price direction or returns.
Official sources and checks
- Perpetual Futures Funding Fee FAQ · OKXRecorded: 2026-08-31
Funding formula, sign, position timing, and variable settlement intervals
- USDⓈ-M Futures Funding Rate History API · Binance DevelopersRecorded: 2026-08-31
Historical funding observations by symbol and time
- USDⓈ-M Futures Funding Rate Info API · Binance DevelopersRecorded: 2026-08-31
Symbol-specific caps, floors, and settlement intervals can vary
How this page was produced: AI-assisted draft · automated release checks · 2026-08-31