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 198,346 units (Dollar, Euro, Pound, etc.) to produce an amount of 146 units, for a period of 590,212 days (19,391 Months and 8 Days). Mar 04 02:20 UTC (GMT)
Calculate the simple (flat) interest rate of the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 9,611 units (Dollar, Euro, Pound, etc.) to produce an amount of 216 units, for a period of 578,393 days (19,003 Months and 2 Days). Mar 04 02:17 UTC (GMT)
Calculate the simple (flat) interest rate of the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 16,231 units (Dollar, Euro, Pound, etc.) to produce an amount of 488 units, for a period of 445,403 days (14,633 Months and 19 Days). The transaction fee is 1%. Mar 04 02:17 UTC (GMT)
Calculate the simple (flat) interest rate of the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 198,277 units (Dollar, Euro, Pound, etc.) to produce an amount of 198 units, for a period of 590,212 days (19,391 Months and 8 Days). Mar 04 02:15 UTC (GMT)
Calculate the simple (flat) interest rate of the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 2,833 units (Dollar, Euro, Pound, etc.) to produce an amount of 168 units, for a period of 429,190 days (14,101 Months). Mar 04 02:15 UTC (GMT)
Calculate the simple (flat) interest rate of the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 11,240 units (Dollar, Euro, Pound, etc.) to produce an amount of 244 units, for a period of 578,393 days (19,003 Months and 2 Days). Mar 04 02:15 UTC (GMT)
Calculate the simple (flat) interest rate of the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 9,446 units (Dollar, Euro, Pound, etc.) to produce an amount of 2,461 units, for a period of 500,048 days (16,429 Months). Mar 04 02:14 UTC (GMT)
Calculate the simple (flat) interest rate of the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 12,000 units (Dollar, Euro, Pound, etc.) to produce an amount of 12.93 units, for a period of 162 days (5 Months and 9 Days). The transaction fee is 476%. Mar 04 02:14 UTC (GMT)
Calculate the simple (flat) interest rate of the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 9,909 units (Dollar, Euro, Pound, etc.) to produce an amount of 228 units, for a period of 616,794 days (20,265 Months without 9 Days). Mar 04 02:14 UTC (GMT)
Calculate the simple (flat) interest rate of the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 5,730 units (Dollar, Euro, Pound, etc.) to produce an amount of 244 units, for a period of 462,732 days (15,203 Months). Mar 04 02:10 UTC (GMT)
Calculate the simple (flat) interest rate of the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 10,500 units (Dollar, Euro, Pound, etc.) to produce an amount of 15 units, for a period of 459,629 days (15,101 Months). Mar 04 02:08 UTC (GMT)
Calculate the simple (flat) interest rate of the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 3,632 units (Dollar, Euro, Pound, etc.) to produce an amount of 264 units, for a period of 12,754 days (419 Months). Mar 04 02:08 UTC (GMT)
Calculate the simple (flat) interest rate of the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 14,378 units (Dollar, Euro, Pound, etc.) to produce an amount of 310 units, for a period of 578,393 days (19,003 Months and 2 Days). Mar 04 02:07 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%.