Simple (Flat Rate) Interest Calculator: Calculate the Annual Simple (Flat) Interest Rate of an Invested Amount of Money (Principal, Initial Starting Amount Lent, Deposited or Borrowed) To Produce a Certain Sum of Money by the Investment Duration Period and Transaction Fee

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

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

The latest calculated annual simple (flat) interest rates

Calculate the simple (flat) interest rate of the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 13,751 units (Dollar, Euro, Pound, etc.) to produce an amount of 224 units, for a period of 392,745 days (12,904 Months without 11 Days). Dec 12 23:29 UTC (GMT)
Calculate the simple (flat) interest rate of the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 4,620 units (Dollar, Euro, Pound, etc.) to produce an amount of 163 units, for a period of 684,860 days (22,501 Months). Dec 12 23:29 UTC (GMT)
Calculate the simple (flat) interest rate of the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 9,532 units (Dollar, Euro, Pound, etc.) to produce an amount of 153 units, for a period of 469,703 days (15,432 Months). The transaction fee is 364%. Dec 12 23:29 UTC (GMT)
Calculate the simple (flat) interest rate of the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 19,759 units (Dollar, Euro, Pound, etc.) to produce an amount of 418 units, for a period of 693,779 days (22,794 Months). The transaction fee is 532%. Dec 12 23:29 UTC (GMT)
Calculate the simple (flat) interest rate of the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 705,279,612,556 units (Dollar, Euro, Pound, etc.) to produce an amount of 162 units, for a period of 658,714 days (21,642 Months). Dec 12 23:29 UTC (GMT)
Calculate the simple (flat) interest rate of the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 2,023 units (Dollar, Euro, Pound, etc.) to produce an amount of 2,048 units, for a period of 444,835 days (14,615 Months). The transaction fee is 246%. Dec 12 23:29 UTC (GMT)
Calculate the simple (flat) interest rate of the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 505,526,101,129 units (Dollar, Euro, Pound, etc.) to produce an amount of 147 units, for a period of 658,714 days (21,642 Months). Dec 12 23:29 UTC (GMT)
Calculate the simple (flat) interest rate of the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 218 units (Dollar, Euro, Pound, etc.) to produce an amount of 29 units, for a period of 382,808 days (12,577 Months and 6 Days). Dec 12 23:29 UTC (GMT)
Calculate the simple (flat) interest rate of the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 801,909 units (Dollar, Euro, Pound, etc.) to produce an amount of 189 units, for a period of 604,842 days (19,872 Months). Dec 12 23:29 UTC (GMT)
Calculate the simple (flat) interest rate of the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 6,870 units (Dollar, Euro, Pound, etc.) to produce an amount of 176 units, for a period of 522,629 days (17,171 Months without 3 Days). Dec 12 23:29 UTC (GMT)
Calculate the simple (flat) interest rate of the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 86,234 units (Dollar, Euro, Pound, etc.) to produce an amount of 553 units, for a period of 542,719 days (17,831 Months). Dec 12 23:29 UTC (GMT)
Calculate the simple (flat) interest rate of the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 378,273,607,344 units (Dollar, Euro, Pound, etc.) to produce an amount of 98 units, for a period of 658,714 days (21,642 Months). Dec 12 23:28 UTC (GMT)
Calculate the simple (flat) interest rate of the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 414,866,709,941 units (Dollar, Euro, Pound, etc.) to produce an amount of 132 units, for a period of 658,714 days (21,642 Months). Dec 12 23:28 UTC (GMT)
All the 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%.