How are crypto funding fees calculated?

Funding fee per settlement = position notional × funding rate. Multiply by the number of settlements you hold through (typically one every eight hours) for the total.

Do I pay funding on margin or on position size?

On the full position notional, not your margin. That means leverage increases funding's bite relative to the capital you posted.

Who pays the funding fee, longs or shorts?

When the funding rate is positive, longs pay shorts; when it's negative, shorts pay longs. The sign reflects whether the perpetual is trading above or below spot.

Can I earn funding instead of paying it?

Yes. If you hold the side that receives funding, it's income. Market-neutral strategies deliberately hold a hedged position to collect funding while avoiding directional risk.

Home › Tools › Crypto Funding Fee Calculator

Crypto Funding Fee Calculator

Perpetual futures charge a small funding fee every few hours to keep the contract pegged to spot. Enter your position size, the funding rate and how long you'll hold — see exactly what funding costs (or pays) you.

Funding fees

Position size (USD)

Funding rate per interval (%)

Hours held

Interval length (hours)

Direction

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Total funding

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Per interval

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Settlements

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Compare funding rates across exchanges

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What is funding and why does it exist?

A perpetual futures contract never expires, so exchanges need a mechanism to keep its price tethered to the underlying spot price. That mechanism is the funding rate: roughly every eight hours, one side of the market pays the other a small percentage of position value.

Positive funding rate: the perp is trading above spot (crowded longs), so longs pay shorts.
Negative funding rate: the perp is below spot (crowded shorts), so shorts pay longs.

The fee is charged on your full position notional, not your margin — so leverage magnifies its impact relative to the capital you put up. A 0.01% rate on a $10,000 position is $1 per settlement, or $3 a day at three settlements. Small for a day trade; meaningful if you hold a leveraged position for weeks.

Trading around funding

Holding through high positive funding as a long is a slow leak — factor it into your target.
Funding can be harvested. Market-neutral "funding farming" (long spot, short perp, or vice-versa) collects funding while hedging price risk.
Extreme funding signals crowding and often precedes a squeeze in the opposite direction.

This calculator assumes a constant rate; in reality the rate refreshes each interval, so use the current displayed rate on your exchange for the most accurate estimate.

Frequently asked questions

How are crypto funding fees calculated?: Funding fee per settlement = position notional × funding rate. Multiply by the number of settlements you hold through (typically one every eight hours) for the total.
Do I pay funding on margin or on position size?: On the full position notional, not your margin. That means leverage increases funding's bite relative to the capital you posted.
Who pays the funding fee, longs or shorts?: When the funding rate is positive, longs pay shorts; when it's negative, shorts pay longs. The sign reflects whether the perpetual is trading above or below spot.
Can I earn funding instead of paying it?: Yes. If you hold the side that receives funding, it's income. Market-neutral strategies deliberately hold a hedged position to collect funding while avoiding directional risk.