The interest rates of up to 4% are calculated based on annual returns. Each week on Friday at 13:00 CET we calculate all income according to the current prices.

Our interest calculation schedule is as follows:

• Interest accrual period: Friday 07:00:00 CET to Friday 06:59:59 CET.
• Interest calculation price snapshot: Friday 13:00:00 CET
• Interest payment day: Monday, no set time. 

Interest in-kind example:

• BTC price: € 7500 
• The interest rate on BTC: 4.50%
• BTC deposit balance: 1
• Celsius use the weekly compounded interest formula:
  P * (1 + r / n ) ^ n

In the case of Celsius:

Number of BTC * ( 1 + ( Interest rate / Number of weeks in a year )) ^ Number of weeks in a year

• 1 BTC * (1 + 0.045 / 52) ^ 52 = 1.0460075 BTC  ← balance after a year
• 1.0460075 BTC - 1 BTC  = 0.0460075 BTC
• 0.0460075 BTC = 345,05 €  ← per year in compounded interest