Simple flat rate interest calculator: calculate the due interest on an amount of money lent, deposited or borrowed by the interest rate, principal (starting amount), duration and additional transactional fees (withdrawal, payment in advance)

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 200,000 units (Dollar, Euro, Pound, etc.), from date: Feb 05, 2017, to date: Mar 05, 2017, namely for a period of 28 days, with an annual simple flat interest rate of 3% if the commission fee (withdrawal) is 0%. Apr 02 11:44 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: May 25, 0274, to date: Jun 17, 2018, namely for a period of 637,006 days (20,929 Months without 8 Days), with an annual simple flat interest rate of 0.02% if the commission fee (withdrawal) is 0%. Apr 02 11:41 UTC (GMT)
Calculate due interest earned by a principal (initial amount of money lent, deposited or borrowed) of 0 units (Dollar, Euro, Pound, etc.), from date: Feb 22, 0302, to date: Feb 16, 2018, namely for a period of 626,751 days (20,592 Months without 6 Days), with an annual simple flat interest rate of 0% if the commission fee (withdrawal) is 0%. Apr 02 11:40 UTC (GMT)
Calculate due interest earned by a principal (initial amount of money lent, deposited or borrowed) of 55,000 units (Dollar, Euro, Pound, etc.), from date: Mar 12, 2023, to date: Apr 12, 2024, namely for a period of 397 days (13 Months), with an annual simple flat interest rate of 5% if the commission fee (withdrawal) is 0%. Apr 02 11:38 UTC (GMT)
Calculate due interest earned by a principal (initial amount of money lent, deposited or borrowed) of 80,000 units (Dollar, Euro, Pound, etc.), from date: Jan 10, 2019, to date: Feb 10, 2019, namely for a period of 31 days, with an annual simple flat interest rate of 1% if the commission fee (withdrawal) is 0%. Apr 02 11:35 UTC (GMT)
Calculate due interest earned by a principal (initial amount of money lent, deposited or borrowed) of 10,000 units (Dollar, Euro, Pound, etc.), from date: Jul 02, 0818, to date: Jul 02, 2023, namely for a period of 440,117 days (14,460 Months), with an annual simple flat interest rate of 5% if the commission fee (withdrawal) is 0%. Apr 02 11:35 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 31, 0580, to date: Jan 01, 2018, namely for a period of 524,854 days (17,245 Months without 30 Days), with an annual simple flat interest rate of 2% if the commission fee (withdrawal) is 0%. Apr 02 11:30 UTC (GMT)
Calculate due interest earned by a principal (initial amount of money lent, deposited or borrowed) of 2,600 units (Dollar, Euro, Pound, etc.), from date: May 15, 2017, to date: Nov 15, 2018, namely for a period of 549 days (18 Months), with an annual simple flat interest rate of 19% if the commission fee (withdrawal) is 460%. Apr 02 11:30 UTC (GMT)
Calculate due interest earned by a principal (initial amount of money lent, deposited or borrowed) of 0 units (Dollar, Euro, Pound, etc.), from date: Oct 13, 0706, to date: Mar 08, 2018, namely for a period of 478,980 days (15,737 Months without 5 Days), with an annual simple flat interest rate of 7.5% if the commission fee (withdrawal) is 0%. Apr 02 11:11 UTC (GMT)
Calculate due interest earned by a principal (initial amount of money lent, deposited or borrowed) of 20,000 units (Dollar, Euro, Pound, etc.), from date: Jan 01, 2023, to date: Jan 01, 2024, namely for a period of 365 days (12 Months), with an annual simple flat interest rate of 15% if the commission fee (withdrawal) is 0%. Apr 02 11:11 UTC (GMT)
Calculate due interest earned by a principal (initial amount of money lent, deposited or borrowed) of 3,000 units (Dollar, Euro, Pound, etc.), from date: Mar 29, 2022, to date: Apr 29, 2025, namely for a period of 1,127 days (37 Months), with an annual simple flat interest rate of 12% if the commission fee (withdrawal) is 0%. Apr 02 11:05 UTC (GMT)
Calculate due interest earned by a principal (initial amount of money lent, deposited or borrowed) of 0 units (Dollar, Euro, Pound, etc.), from date: Feb 04, 0642, to date: Feb 22, 0860, namely for a period of 79,641 days (2,616 Months and 18 Days), with an annual simple flat interest rate of 0% if the commission fee (withdrawal) is 0%. Apr 02 11:01 UTC (GMT)
Calculate due interest earned by a principal (initial amount of money lent, deposited or borrowed) of 782 units (Dollar, Euro, Pound, etc.), from date: Jun 17, 2018, to date: Dec 17, 2018, namely for a period of 183 days (6 Months), with an annual simple flat interest rate of 10% if the commission fee (withdrawal) is 0%. Apr 02 10:53 UTC (GMT)
All users calculated simple flat rate interest values


Simple flat rate interest.

Interest

Annual simple flat interest rate

Annual simple flat rate interest formula:

Examples of how the simple flat rate interest formula works:

Annual simple flat rate interest formula calculated for a period of n years:

Annual simple flat rate interest formula calculated for a period of m months:

Annual simple flat rate interest formula calculated for a period of d days:

More examples of how the simple flat rate interest formula works: