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, 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%.

Principal (initial amount), P = 100,000


Due interest, I = 0.07


From date: Mar 14, 2018


To date: Apr 18, 2019


Duration, T = 400 days (13 Months and 4 Days)


Commission fee (withdrawal), F = 970%


No. of days in a year, N = 365


R = Annual simple interest rate:

R = (N × I) ÷ (P × T) =


100% × (N × I) ÷ (P × T) =


((100 × N × I) ÷ (P × T))% =


((100 × 365 × 0.07) ÷ (100,000 × 400))% =


(2,555 ÷ 40,000,000)% =


0.000063875% ≈


0%

B = Amount earned before deducting the
commission fee (withdrawal):

B = P + I =


100,000 + 0.07 =


100,000.07

D = Amount earned after deducting the
commission fee (withdrawal):

D = B - F =


B - F% × B =


(1 - F%) × B =


(1 - 970%) × 100,000.07 =


- 870% × 100,000.07 =


- 870,000.609 ≈


- 870,000.61

Pr = Investment profit:

Pr = D - P =


- 870,000.609 - 100,000 =


- 970,000.609 ≈


- 970,000.61

Signs: % percent, ÷ divide, × multiply, = equal, ≈ approximately equal;

Writing numbers: comma ',' as thousands separator; point '.' as a decimal mark;

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 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%.Oct 22 13:50 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 2,000,000 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 8.5 units (Dollar, Euro, Pound, etc.), from date: Apr 19, 0588, to date: Nov 19, 2017, namely for a period of 522,145 days (17,155 Months) if the commission fee (withdrawal) is 252%.Oct 22 13:50 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 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%.Oct 22 13:35 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 240 units (Dollar, Euro, Pound, etc.), from date: May 20, 1996, to date: May 21, 2020, namely for a period of 8,767 days (288 Months and 1 Day) if the commission fee (withdrawal) is 0%.Oct 22 13:33 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 3,000 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 1,600 units (Dollar, Euro, Pound, etc.), from date: May 19, 0800, to date: Apr 27, 2018, namely for a period of 444,843 days (14,615 Months and 8 Days) if the commission fee (withdrawal) is 28%.Oct 22 13:32 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 25,000 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 972 units (Dollar, Euro, Pound, etc.), from date: Jun 04, 2018, to date: Jul 04, 2022, namely for a period of 1,491 days (49 Months) if the commission fee (withdrawal) is 928%.Oct 22 13:28 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 27, 2018, to date: Mar 28, 2025, namely for a period of 2,586 days (85 Months and 1 Day) if the commission fee (withdrawal) is 220%.Oct 22 13:18 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, 2017, to date: Jul 14, 2019, namely for a period of 718 days (24 Months without 12 Days) if the commission fee (withdrawal) is 0%.Oct 22 13:13 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%.Oct 22 13:10 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: Apr 15, 0202, to date: Jul 15, 2019, namely for a period of 663,737 days (21,807 Months) if the commission fee (withdrawal) is 0%.Oct 22 13:08 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 3,000 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 10 units (Dollar, Euro, Pound, etc.), from date: Jul 06, 0432, to date: Jan 06, 2017, namely for a period of 578,728 days (19,014 Months) if the commission fee (withdrawal) is 124%.Oct 22 13:05 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 488 units (Dollar, Euro, Pound, etc.), from date: Apr 15, 2019, to date: Apr 15, 2024, namely for a period of 1,827 days (60 Months) if the commission fee (withdrawal) is 638%.Oct 22 13:03 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 9 units (Dollar, Euro, Pound, etc.), from date: Feb 03, 0206, to date: Feb 09, 2022, namely for a period of 663,287 days (21,792 Months and 6 Days) if the commission fee (withdrawal) is 0%.Oct 22 13:03 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%.