Calculate the due interest earned by a principal (initial amount of money lent, deposited or borrowed) of 4,000 units (Dollar, Euro, Pound, etc.), from date: Jan 28, 2019, to date: Feb 28, 2019, namely for a period of 31 days, with an annual simple flat interest rate of 2% if the commission fee (withdrawal or payment) is 2%.

Principal (initial amount), P = 4,000


Annual simple interest rate, R = 2%


From date: Jan 28, 2019


To date: Feb 28, 2019


Duration, T = 31 days


Commission fee (withdrawal or payment), F = 2%


No. of days in a year, N = 365


I = Simple interest:

I = (P × R × T) ÷ N =


(4,000 × 2% × 31) ÷ 365 =


(4,000 × 2 × 31) ÷ (365 × 100) =


248,000 ÷ 36,500 ≈


6.794520547945 ≈


6.79

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

B = P + I =


4,000 + 6.794520547945 =


4,006.794520547945 ≈


4,006.79

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

D = B - F =


B - F% × B =


(1 - F%) × B =


(1 - 2%) × 4,006.794520547945 =


98% × 4,006.794520547945 ≈


3,926.658630136986 ≈


3,926.66

Pr = Investment profit:

Pr = D - P =


3,926.658630136986 - 4,000 =


- 73.341369863014 ≈


- 73.34

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

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

Calculate simple flat rate interest on a principal borrowed, lent

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

Latest calculated simple flat rate interest values

Calculate due interest earned by a principal (initial amount of money lent, deposited or borrowed) of 4,000 units (Dollar, Euro, Pound, etc.), from date: Jan 28, 2019, to date: Feb 28, 2019, namely for a period of 31 days, with an annual simple flat interest rate of 2% if the commission fee (withdrawal or payment) is 2%. Jan 25 10:30 UTC (GMT)
Calculate due interest earned by a principal (initial amount of money lent, deposited or borrowed) of 5,500 units (Dollar, Euro, Pound, etc.), from date: Feb 03, 0814, to date: Aug 03, 2017, namely for a period of 439,568 days (14,442 Months), with an annual simple flat interest rate of 12% if the commission fee (withdrawal or payment) is 0%. Jan 25 10:29 UTC (GMT)
Calculate due interest earned by a principal (initial amount of money lent, deposited or borrowed) of 760 units (Dollar, Euro, Pound, etc.), from date: Jan 01, 0590, to date: Dec 31, 2021, namely for a period of 523,026 days (17,183 Months and 30 Days), with an annual simple flat interest rate of 10% if the commission fee (withdrawal or payment) is 0%. Jan 25 10:29 UTC (GMT)
Calculate due interest earned by a principal (initial amount of money lent, deposited or borrowed) of 760 units (Dollar, Euro, Pound, etc.), from date: Jan 01, 0590, to date: Dec 31, 2021, namely for a period of 523,026 days (17,183 Months and 30 Days), with an annual simple flat interest rate of 10% if the commission fee (withdrawal or payment) is 0%. Jan 25 10:29 UTC (GMT)
Calculate due interest earned by a principal (initial amount of money lent, deposited or borrowed) of 100 units (Dollar, Euro, Pound, etc.), from date: Dec 06, 0112, to date: Dec 06, 2017, namely for a period of 695,787 days (22,860 Months), with an annual simple flat interest rate of 10% if the commission fee (withdrawal or payment) is 20%. Jan 25 10:29 UTC (GMT)
Calculate due interest earned by a principal (initial amount of money lent, deposited or borrowed) of 8,500 units (Dollar, Euro, Pound, etc.), from date: Jan 25, 2021, to date: Jul 25, 2021, namely for a period of 181 days (6 Months), with an annual simple flat interest rate of 7% if the commission fee (withdrawal or payment) is 0%. Jan 25 10:29 UTC (GMT)
Calculate due interest earned by a principal (initial amount of money lent, deposited or borrowed) of 1 units (Dollar, Euro, Pound, etc.), from date: Jan 01, 0001, to date: Jan 01, 2022, namely for a period of 7,670 days (24,252 Months), with an annual simple flat interest rate of 15% if the commission fee (withdrawal or payment) is 0%. Jan 25 10:29 UTC (GMT)
Calculate due interest earned by a principal (initial amount of money lent, deposited or borrowed) of 1 units (Dollar, Euro, Pound, etc.), from date: Jan 01, 0284, to date: Jan 01, 0001, namely for a period of 627,122 days (3,396 Months), with an annual simple flat interest rate of 15% if the commission fee (withdrawal or payment) is 336%. Jan 25 10:29 UTC (GMT)
Calculate due interest earned by a principal (initial amount of money lent, deposited or borrowed) of 100 units (Dollar, Euro, Pound, etc.), from date: Jan 01, 0254, to date: Jan 01, 2018, namely for a period of 644,288 days (21,168 Months), with an annual simple flat interest rate of 2% if the commission fee (withdrawal or payment) is 0%. Jan 25 10:29 UTC (GMT)
Calculate due interest earned by a principal (initial amount of money lent, deposited or borrowed) of 100 units (Dollar, Euro, Pound, etc.), from date: Jan 01, 0254, to date: Jan 01, 2018, namely for a period of 644,288 days (21,168 Months), with an annual simple flat interest rate of 2% if the commission fee (withdrawal or payment) is 0%. Jan 25 10:29 UTC (GMT)
Calculate due interest earned by a principal (initial amount of money lent, deposited or borrowed) of 1 units (Dollar, Euro, Pound, etc.), from date: Jan 25, 0904, to date: Nov 01, 2018, namely for a period of 407,161 days (13,378 Months without 24 Days), with an annual simple flat interest rate of 10% if the commission fee (withdrawal or payment) is 600%. Jan 25 10:28 UTC (GMT)
Calculate due interest earned by a principal (initial amount of money lent, deposited or borrowed) of 1 units (Dollar, Euro, Pound, etc.), from date: Jan 25, 0904, to date: Nov 01, 2018, namely for a period of 407,161 days (13,378 Months without 24 Days), with an annual simple flat interest rate of 10% if the commission fee (withdrawal or payment) is 600%. Jan 25 10:28 UTC (GMT)
Calculate due interest earned by a principal (initial amount of money lent, deposited or borrowed) of 2,100 units (Dollar, Euro, Pound, etc.), from date: Oct 02, 2017, to date: Nov 02, 2017, namely for a period of 31 days, with an annual simple flat interest rate of 0.3% if the commission fee (withdrawal or payment) is 852%. Jan 25 10:28 UTC (GMT)
All users calculated simple flat rate interest values