Trading Calculations
How to Calculate Crypto Funding Fees (With Example)
If you hold a perpetual futures position, you may pay or receive a funding fee several times a day. A crypto funding fee calculator multiplies your position size by the funding rate and the number of payments. This guide shows the formula, a worked example and how the cost adds up — then try your numbers in the [Crypto Funding Fee Calculator](/crypto/funding-fee-calculator).
By the MoneyTools Editorial TeamLast updated 6 min readEditorial Policy
What are crypto funding fees?
Perpetual futures have no expiry date. To keep their price close to the spot price, exchanges use a funding rate: a small payment exchanged between traders who are long and traders who are short. It is paid between traders, not to the exchange, and it is charged only if you hold a position at the funding time. Many exchanges use 8-hour intervals (three times a day), but some use 1-hour or 4-hour intervals — check your exchange's contract details.
The crypto funding fee formula
Funding fee = Position value × Funding rate Daily cost = Funding fee × Payments per day Total cost = Daily cost × Days held
- Position value
- Notional size (contracts × mark price), not your margin
- Funding rate
- Rate for that interval, e.g. 0.01%
- Payments per day
- 3 for 8-hour funding
Funding is based on the full position value. With 10× leverage, a $1,000 margin controls $10,000, so you pay funding on $10,000.
Worked example: $10,000 BTC long at 0.01%
Worked example
Funding fee calculation
- Position: $10,000 BTC perpetual long
- Funding rate: +0.01% per 8 hours (illustrative)
- Per payment: $10,000 × 0.0001 = $1.00
- Per day: $1.00 × 3 = $3.00
- Per 30 days: $3.00 × 30 = $90
Holding for a month at this steady rate costs about $90 — 0.9% of the position value.
Funding fee cost table
| Funding rate (per 8h) | Per day | 7 days | 30 days |
|---|---|---|---|
| 0.01% | $3 | $21 | $90 |
| 0.03% | $9 | $63 | $270 |
| 0.05% | $15 | $105 | $450 |
| −0.01% (long receives) | +$3 | +$21 | +$90 |
How funding fees affect your trade
They eat into profit
On a leveraged trade, funding is a cost relative to your margin, not just the position. $90 a month on a $1,000 margin is 9% of your capital. Include it when you check results with the Crypto Profit/Loss Calculator.
Rates change
Funding rates move with market demand. In strong rallies, positive rates can climb well above 0.01%. Our table holds the rate fixed only to show the math.
Leverage magnifies the impact
Higher leverage means a bigger position for the same margin, so funding takes a bigger bite. Read more in our guide to crypto leverage.
Using a crypto funding fee calculator
- Enter your position value, not your margin.
- Enter the current funding rate shown on your exchange.
- Set the number of funding intervals per day and how long you plan to hold.
- Treat the result as an estimate — the rate will likely change.
Examples use made-up rates for education. MoneyTools shows no live funding rates; always check your exchange.
Run your own numbers
Estimate funding payments on perpetual futures positions.
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