Estimate simple interest earned, total amount, annual interest, monthly interest, and inflation-adjusted ending value using principal, rate, and time.
Principal:
The original amount stays constant for interest calculations.
Simple interest:
Interest is calculated only on the original principal, not on prior interest earned.
Total amount:
The calculator adds the interest earned to the principal.
After-tax and inflation view:
The calculator also estimates after-tax interest and inflation-adjusted ending value.
Simple interest is easy to understand and is useful for straightforward estimates involving principal, rate, and time. It is especially useful when you want a quick, linear interest estimate without compounding.
This tool is best for planning estimates and basic comparisons.
Your result shows interest earned, ending amount, annual and monthly interest estimates, after-tax interest, and inflation-adjusted ending value based on the assumptions entered.
Simple interest is interest calculated only on the original principal amount and not on accumulated interest.
Simple interest does not add earnings back into the balance for future growth, while compound interest does.
Yes. This calculator converts months and days into a year-based time value for the estimate.
No. This is only an estimate based on the rate, time, and assumptions you enter.