Funding fee calculator
See what a funding rate means in USDT: what a long or short position pays or receives at each settlement, per day and over the time it is held.
Educational calculator with general formulas for linear, USDT-margined perpetual futures, without fees. Exchanges apply their own rules, and their figure is the one that counts. No investment advice.
Result
Per settlement−1.00 USDT
- Settlements in 7 days
- 21
- Over the holding time
- −21.00 USDT
- Per day
- −3.00 USDT
- Share of the margin
- 2.1%
How the number comes about
- Per settlement = 10000 × 0.01% = 1.00 USDT
- Settlements in 7 days = 7 × 24 ÷ 8 = 21
- Over the holding time = 21 × −1.00 USDT = −21.00 USDT
How the funding fee is calculated
- Payment per settlement = position size × funding rate.
- At a positive rate longs pay shorts; at a negative rate shorts pay longs.
- Settlements in the holding time = holding time ÷ interval, counting completed intervals only.
- As a share of the margin: the total ÷ (position size ÷ leverage). The same funding weighs more on the margin the higher the leverage.
What the formula leaves out
- The rate changes at every settlement; the calculator holds it constant.
- The position value moves with the mark price, and so does each payment.
- Some exchanges cap the rate or settle at other intervals. The ZK Futures testnet settles every hour, at most 0.1% of the position value per settlement.