Funding calculator
Pick a coin and an exchange — the calculator fills in the live rate and shows the funding payments over your holding period.
The calculator performs an arithmetic estimate based on the values you enter and is not investment advice. Exact contract parameters are set by each exchange — check its specification.
How it is calculated
Funding is a periodic payment between long and short holders on perpetual futures: with a positive rate longs pay shorts, with a negative one it is the other way around. The payment is calculated on the position notional, so with leverage funding accrues on the whole position, not just your margin.
The calculator assumes the rate stays constant over the whole holding period — in reality it is recalculated every interval and can flip sign. Treat long-horizon totals as an order of magnitude rather than a forecast; live rate dynamics across all pairs are easier to follow on the funding extremes page.
FAQ
What is a funding rate?
A periodic payment between longs and shorts on perpetual futures. The mechanism ties the contract price to spot: when the future trades above spot, the rate is usually positive and longs pay shorts.
How often is funding charged?
Most often every 8 hours; on some exchanges and contracts every 4 hours or every hour. The rate is recalculated each interval and the payment only happens at the settlement moment — close the position earlier and there is no payment.
Does funding accrue on leverage?
Funding is calculated on the position notional — the size including leverage. With a 1,000 USDT position at 10x and a 0.01% rate the payment is 1 USDT per interval, even though your margin is only 100 USDT.
Track extreme rates automatically
The funding screener watches rates across every pair on 10 exchanges and sends a notification when a coin’s rate crosses your threshold.