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 10,434 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 308 units (Dollar, Euro, Pound, etc.), from date: Feb 28, 0398, to date: Mar 28, 2025, namely for a period of 594,278 days (19,525 Months) if the commission fee (withdrawal) is 0%.Sep 16 19:09 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 10,500 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 15 units (Dollar, Euro, Pound, etc.), from date: Feb 03, 0758, to date: Feb 02, 2017, namely for a period of 459,840 days (15,108 Months without 1 Days) if the commission fee (withdrawal) is 0%.Sep 16 19:09 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 286 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 105,000 units (Dollar, Euro, Pound, etc.), from date: Apr 28, 0270, to date: May 28, 2035, namely for a period of 644,683 days (21,181 Months) if the commission fee (withdrawal) is 0%.Sep 16 19:03 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 572 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 200 units (Dollar, Euro, Pound, etc.), from date: Mar 28, 0612, to date: Feb 28, 2018, namely for a period of 513,503 days (16,871 Months) if the commission fee (withdrawal) is 0%.Sep 16 18:50 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 124 units (Dollar, Euro, Pound, etc.), from date: Jul 01, 0356, to date: Oct 10, 2017, namely for a period of 606,769 days (19,935 Months and 9 Days) if the commission fee (withdrawal) is 0%.Sep 16 18:47 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 10,434 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 318 units (Dollar, Euro, Pound, etc.), from date: Mar 28, 0834, to date: Feb 28, 2018, namely for a period of 432,419 days (14,207 Months) if the commission fee (withdrawal) is 520%.Sep 16 18:47 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 996 units (Dollar, Euro, Pound, etc.), from date: Sep 08, 2017, to date: Sep 27, 2022, namely for a period of 1,845 days (60 Months and 19 Days) if the commission fee (withdrawal) is 0%.Sep 16 18:44 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 0.07 units (Dollar, Euro, Pound, etc.), from date: Mar 14, 2018, to date: Apr 18, 2019, namely for a period of 400 days (13 Months and 4 Days) if the commission fee (withdrawal) is 970%.Sep 16 18:31 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 124 units (Dollar, Euro, Pound, etc.), from date: Jul 01, 0864, to date: Jul 10, 2017, namely for a period of 421,133 days (13,836 Months and 9 Days) if the commission fee (withdrawal) is 0%.Sep 16 18:22 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 10,434 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 200 units (Dollar, Euro, Pound, etc.), from date: Feb 28, 0392, to date: Mar 28, 0738, namely for a period of 126,402 days (4,153 Months) if the commission fee (withdrawal) is 0%.Sep 16 18:19 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, 0008, to date: May 13, 2018, namely for a period of 3,652 days (24,120 Months) if the commission fee (withdrawal) is 0%.Sep 16 18:03 UTC (GMT)
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 833 units (Dollar, Euro, Pound, etc.), from date: Jul 26, 0948, to date: Jul 26, 2019, namely for a period of 391,174 days (12,852 Months) if the commission fee (withdrawal) is 710%.Sep 16 17:44 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 16,739 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 13,000 units (Dollar, Euro, Pound, etc.), from date: Jul 01, 0200, to date: Aug 31, 0630, namely for a period of 157,115 days (5,161 Months and 30 Days) if the commission fee (withdrawal) is 0.35%.Sep 16 17:40 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%.