Enter your position size and the funding rate to see what you pay or earn for holding a perpetual futures position.
A perpetual futures contract has no expiry, so exchanges use a funding payment to keep its price close to the spot price. Every funding interval, usually 8 hours, traders on one side pay traders on the other. When the funding rate is positive, longs pay shorts. When it is negative, shorts pay longs. The exchange itself takes no part of the payment.
The funding payment equals the position value multiplied by the funding rate. The position value is the quantity multiplied by the mark price. A 30,000 USDT position at a rate of 0.01% pays 3 USDT each interval. The calculator multiplies this by the number of intervals in a day, and by the number of days you plan to hold, to show the cost of keeping the position open. If you are on the side that receives the payment, the amount is shown as income.
A small rate adds up. At 0.01% every 8 hours, funding costs about 0.03% a day, which is nearly 11% a year on the position value. Rates change with the market and can be much higher when one side is crowded. The calculator assumes a constant rate and a constant price, so treat the result as an estimate and check the current rate on your exchange.
It is the position value, which is quantity times mark price, multiplied by the funding rate for that interval.
When the rate is positive, longs pay shorts. When it is negative, shorts pay longs.
On most exchanges every 8 hours, though some contracts use 4 hours or 1 hour. Pick the interval for your contract.
No. It depends on the full position value, not on the margin, so the same position pays the same funding at any leverage.
Usually no. Funding is only charged to positions that are open at the moment the funding time is reached.
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