Calculator: calculate the annual simple flat interest rate to negociate in order to earn a certain simple flat rate interest on the principal (money starting amount) by duration and additional transaction fees

Calculator: annual simple interest rate to negociate to earn a certain interest

Annual simple flat interest rate = (Simple flat rate interest × Number of days in a year) ÷ (Principal × Duration in days)

Latest calculated annual simple flat interest rates

Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 10,000 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 300 units (Dollar, Euro, Pound, etc.), from date: May 09, 2017, to date: Sep 09, 2020, namely for a period of 1,219 days (40 Months) if the commission fee (withdrawal) is 704%.May 18 02:01 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 310 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 18.5 units (Dollar, Euro, Pound, etc.), from date: May 11, 0416, to date: May 11, 2015, namely for a period of 584,022 days (19,188 Months) if the commission fee (withdrawal) is 0%.May 18 02:00 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 184,000 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 18,286 units (Dollar, Euro, Pound, etc.), from date: Sep 27, 0382, to date: Sep 27, 2022, namely for a period of 598,998 days (19,680 Months) if the commission fee (withdrawal) is 0%.May 18 02:00 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 310 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 18.5 units (Dollar, Euro, Pound, etc.), from date: May 11, 0416, to date: May 11, 2015, namely for a period of 584,022 days (19,188 Months) if the commission fee (withdrawal) is 0%.May 18 02:00 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 1,200 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 3 units (Dollar, Euro, Pound, etc.), from date: Jan 10, 0624, to date: Jan 10, 2020, namely for a period of 509,879 days (16,752 Months) if the commission fee (withdrawal) is 0%.May 18 02:00 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 1,200 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 3 units (Dollar, Euro, Pound, etc.), from date: Jan 10, 0624, to date: Jan 10, 2020, namely for a period of 509,879 days (16,752 Months) if the commission fee (withdrawal) is 0%.May 18 02:00 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 102,940 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 1,500 units (Dollar, Euro, Pound, etc.), from date: Aug 11, 2016, to date: Jun 11, 2017, namely for a period of 304 days (10 Months) if the commission fee (withdrawal) is 510%.May 18 01:59 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 15,000 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 16,125 units (Dollar, Euro, Pound, etc.), from date: May 13, 2018, to date: May 13, 2019, namely for a period of 365 days (12 Months) if the commission fee (withdrawal) is 0%.May 18 01:59 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 1,000 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 5 units (Dollar, Euro, Pound, etc.), from date: Oct 30, 0558, to date: Mar 18, 2017, namely for a period of 532,663 days (17,501 Months without 12 Days) if the commission fee (withdrawal) is 0%.May 18 01:59 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 1,550 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 2 units (Dollar, Euro, Pound, etc.), from date: May 07, 2013, to date: Jun 22, 2019, namely for a period of 2,237 days (73 Months and 15 Days) if the commission fee (withdrawal) is 0%.May 18 01:59 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 12,000 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 248 units (Dollar, Euro, Pound, etc.), from date: Jul 01, 0202, to date: Oct 10, 2017, namely for a period of 663,017 days (21,783 Months and 9 Days) if the commission fee (withdrawal) is 0%.May 18 01:59 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 10,000 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 466 units (Dollar, Euro, Pound, etc.), from date: Aug 09, 2017, to date: Sep 09, 2020, namely for a period of 1,127 days (37 Months) if the commission fee (withdrawal) is 0%.May 18 01:59 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 16,125 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 15,000 units (Dollar, Euro, Pound, etc.), from date: May 13, 0774, to date: May 13, 2019, namely for a period of 454,727 days (14,940 Months) if the commission fee (withdrawal) is 0%.May 18 01:59 UTC (GMT)
All annual simple flat interest rates calculated by users


How to calculate / negociate the simple flat interest rate of a principal - initial starting amount of money lent, deposited or borrowed, in order to collect or pay a certain simple flat rate interest by the duration and any additional transaction fees (withdrawal, payment in advance, etc.).

Annual simple flat rate interest formula:

  • I = S × p% × n

  • I = n years simple interest charged
  • S = initial amount (principal)
  • p% = annual simple flat interest rate (percentage of the principal, charged as interest)
  • n = number of years of the lending or borrowing the money
  • Formula of the simple flat interest rate applied on the principal - initial starting amount of money lent, deposited or borrowed, in order to earn a simple flat annual rate:

  • p% = I ÷ (S × n)

Examples of how to calculate the simple flat interest rate on the principal amount in order to earn a certain simple flat rate interest:

  • 1) What is the simple flat interest rate of the principal S = 20,000 units that has to be lent, deposited or borrowed, for a period of n = 5 years, if the simple flat rate interest collected or paid D = 3,500 units?
    Answer:
    p% = I ÷ (S × n) = 3,500 ÷ (20,000 × 5) = 3,500 ÷ 100,000 = 3.5 ÷ 100 = 3.5%
  • 2) What is the simple flat interest rate of a principal S = 5,000 units, that has to be lent, deposited or borrowed, for a period of n = 3 years, if the simple flat rate interest collected or paid D = 300 units?
    Answer:
    p% = I ÷ (S × n) = 300 ÷ (5,000 × 3) = 300 ÷ 15,000 = 3 ÷ 150 = 1 ÷ 50 = 2 ÷ 100 = 2%

Annual simple flat interest rate formula calculated for a period of n years:

  • Simple flat interest rate, p% = I ÷ (S × n)
  • Interest, I = S × p% × n
  • Principal, S = I ÷ (p% × n)
  • Number of years of the period of the deposit, lending or borrowing, n = I ÷ (S × p%)

Formula of the simple flat interest rate of the principal for an annual simple flat rate interest calculated for a period of m months:

  • Simple flat interest rate, p% = (12 × I) ÷ (S × m)
  • Interest, I = (S × p% × m) ÷ 12
  • Principal, S = (12 × I) ÷ (p% × m)
  • Number of months of the period, m = (12 × I) ÷ (S × p%)

Formula of the simple flat interest rate of a principal for an annual simple flat rate interest calculated for a period of d days:

  • Simple flat interest rate, p% = (365 × I) ÷ (S × d)
  • Interest, I = (S × p% × d) ÷ 365
  • Principal, S = (365 × I) ÷ (p% × d)
  • Number of days of the period, d = (365 × I) ÷ (S × p%)

More examples of how the simple flat interest rate of a principal for a simple flat rate interest formula works:

  • 1) Calculate the simple flat interest rate of the initial amount S = 400 units that would generate a simple flat rate interest I = 6.67 units in m = 5 months.
    Answer:
    p% = (12 × I) ÷ (S × m) = (12 × 6.67) ÷ (400 × 5) = (12 × 6.67) ÷ 2,000 = 80 ÷ 2,000 = 4%
  • 2) Calculate the simple flat interest rate of the initial amount S = 400 units that would generate a simple flat rate interest I = 7.5 units in m = 5 months.
    Answer:
    p% = (12 × I) ÷ (S × m) = (12 × 7.5) ÷ (400 × 5) = 90 ÷ 2,000 = 4.5%.