What you provide
What you provide
- Original principal
- Annual simple-interest rate
- Time expressed in years
INTEREST / ORIGINAL PRINCIPAL
Simple Interest Calculator
Calculate interest charged or earned only on the original principal for a selected number of years.
- 01 Calculated in this tab
- 02 Values stay in this browser tab
- 03 Use boundary
Use boundary
Calculation path
The annual rate is applied to the original principal for every year. Earlier interest is never added to the base for later periods.
Calculation path
Simple interest = principal x annual rate x time in years.
What you receive
What you receive
- Simple interest amount
- Principal plus interest
- Annual rate used
Use boundary
Choose the maximum decimal places shown. This does not increase source accuracy.
Use this only when the agreement explicitly uses simple interest. Many loans and deposits use reducing balances or compounding instead.