Free tools · Crypto

Funding rate calculator

Holding a perpetual future for days? Enter the position value and the funding rate to see what it costs or pays every interval, over the whole hold and as a yearly rate.

Side
Over the whole hold–
Each interval–
Funding payments–
Per day–
As a yearly rate–

Runs in your browser; nothing you type is sent anywhere. For learning and planning only, not financial advice. Check your broker's contract specification before trading.

What funding is

A perpetual future never expires, so platforms use a funding payment between the two sides to keep its price near the spot price. When the rate is positive, longs pay shorts; when it is negative, shorts pay longs. It is paid on the position value, not on your margin, so with leverage the cost can be large next to the money you put in.

The maths

Payment = position value × funding rate for each interval. A $10,000 long at +0.01 % every 8 hours pays $1 per interval, $3 a day and $90 over 30 days. As a yearly rate that is 0.01 % × 3 × 365 = 10.95 % of the position value. If your margin was $1,000 (10x), those $90 are 9 % of your money.

Why the real number differs

Funding changes every interval and can flip sign, and the payment is usually taken on the value at that moment. The calculator assumes one steady rate and one steady value, so read the result as a planning figure. A positive rate held for weeks quietly eats into a long position; check it before you plan a long hold.

Work out the trade itself with the crypto profit calculator and the crypto position size calculator.

Questions

How is funding calculated?

Position value × funding rate for each interval. Positive: longs pay shorts. Negative: shorts pay longs.

How often is funding paid?

Most platforms charge every 8 hours, some every 4 hours or every hour, and some change the interval when markets are busy. Pick the one your platform shows.

What does an annualized funding rate mean?

The rate per interval times the intervals in a year: 0.01 % every 8 hours is about 10.95 % a year on the position value.

Do I pay funding on spot?

No. Funding exists only on perpetual futures.

Practise and trade with a plan

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