The Interest Calculator by PerFinn

Welcome to the PerFinn interest calculator! Please bear with us as we are still working out the kinks. We would love to hear your suggestions on how to improve the website, or if you experience any erroneous behaviour. We would also love to hear from you if you just want to say hello as well! Regretfully, we may not be able to respond to everyone, but we do take the time to read every message.

Enjoy your visit!

If you have suggestions for the content of this help box, please message us!

Initial Amount:

$ ? How much you initially invest on day 1. Note that if you were to input 0 for the number of years to invest, the calculator will merely return this initial amount.

Frequency of Additional Contributions:

Value of Each Contribution:

$ ? Each contribution will mature over the remaining years of the amortization period. NOTE: Your last contribution will be added to your result. For example, if you invest 100 dollars initially, at 0% interest, and contribute 100 dollars annually, after one year you will have accrued 200 dollars.

$ ? Each contribution will mature over the remaining years of the amortization period. NOTE: Your last contribution will be added to your result. For example, if you invest 100 dollars initially, at 0% interest, and contribute 100 dollars annually, after one year you will have accrued 200 dollars.

Number of Years:

? How long do you plan on letting your investment mature? Please round to the year. This calculation will ignore any additional fractions of a year.

Interest Rate:

% ? Please put this in as a percent. For instance, if your interest rate is 3.69%, please enter 3.69

How Often is Interest Compounded: