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 20,000 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 30 units (Dollar, Euro, Pound, etc.), from date: Jul 26, 2017, to date: Jul 26, 2019, namely for a period of 730 days (24 Months) if the commission fee (withdrawal or payment) is 0%.Feb 22 10:07 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 17,900 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 550 units (Dollar, Euro, Pound, etc.), from date: Jul 03, 0546, to date: Dec 22, 2017, namely for a period of 537,444 days (17,657 Months and 19 Days) if the commission fee (withdrawal or payment) is 1%.Feb 22 10:05 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 31,321.46 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 397.7 units (Dollar, Euro, Pound, etc.), from date: Oct 20, 0830, to date: Nov 20, 2008, namely for a period of 430,287 days (14,137 Months) if the commission fee (withdrawal or payment) is 0%.Feb 22 10:02 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 640 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 7.12 units (Dollar, Euro, Pound, etc.), from date: Nov 26, 2007, to date: May 26, 2019, namely for a period of 4,199 days (138 Months) if the commission fee (withdrawal or payment) is 0%.Feb 22 09:57 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 100,000 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 7,000 units (Dollar, Euro, Pound, etc.), from date: Nov 21, 2018, to date: Dec 21, 2019, namely for a period of 395 days (13 Months) if the commission fee (withdrawal or payment) is 0%.Feb 22 09:55 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 31,321.46 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 397.7 units (Dollar, Euro, Pound, etc.), from date: Nov 20, 0776, to date: Oct 20, 2008, namely for a period of 449,948 days (14,783 Months) if the commission fee (withdrawal or payment) is 0%.Feb 22 09:52 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 4,000 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 200 units (Dollar, Euro, Pound, etc.), from date: May 15, 2019, to date: Jun 15, 2019, namely for a period of 31 days if the commission fee (withdrawal or payment) is 0%.Feb 22 09:50 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 24,000 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 200 units (Dollar, Euro, Pound, etc.), from date: Feb 01, 2019, to date: Mar 01, 2019, namely for a period of 28 days if the commission fee (withdrawal or payment) is 0%.Feb 22 09:40 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 4,000 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 200 units (Dollar, Euro, Pound, etc.), from date: Aug 10, 2017, to date: Sep 10, 2017, namely for a period of 31 days if the commission fee (withdrawal or payment) is 0%.Feb 22 09:32 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 9,265 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 7 units (Dollar, Euro, Pound, etc.), from date: Jan 31, 2010, to date: Feb 28, 2032, namely for a period of 8,063 days (265 Months without 3 Days) if the commission fee (withdrawal or payment) is 0%.Feb 22 09:18 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 4,000 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 0 units (Dollar, Euro, Pound, etc.), from date: Mar 19, 2012, to date: Mar 19, 2017, namely for a period of 1,826 days (60 Months) if the commission fee (withdrawal or payment) is 25%.Feb 22 09:14 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: Mar 30, 2017, to date: Oct 30, 2017, namely for a period of 214 days (7 Months) if the commission fee (withdrawal or payment) is 0%.Feb 22 09:07 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 24 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 200 units (Dollar, Euro, Pound, etc.), from date: Aug 10, 2017, to date: Sep 10, 2017, namely for a period of 31 days if the commission fee (withdrawal or payment) is 0%.Feb 22 09:00 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%.