Funding is a clock, and it runs whether you win or lose
A positive-carry position bleeds every funding window regardless of price. See the annualised drag on the funding-rate APR calculator, and compare it against harvesting the premium on the funding-rate arbitrage calculator.
How long until funding eats the profit?
An open perp position with positive unrealized PnL is in a race: the profit is fixed until price moves again, but funding drains it every 8 hours. This calculator answers the countdown question — at your position size and the current rate, how many days until the carry consumes what you've made?
Example: +$120 unrealized on a $6,000 position paying 0.02%/8h. That's $3.60 daily in funding — the profit is fully consumed in 33 days of sideways. At a hot 0.06% rate, eleven days. "I'll hold until it comes back" has a rent bill attached, and this is the number on the invoice.
The decision it feeds: for stalled positions, compare the funding countdown against your honest estimate of how long the thesis needs. If the coin needs a month to re-rate and funding eats your buffer in twelve days, the position is structurally expired even though the idea might be fine — close, wait, re-enter cheaper than the carry.