MotionShine01 / Compounding
Interest earns interest
Each time interest is added, the next interest is worked out on the bigger balance.
Free tool
Compound interest calculator, with deposits.
Type a starting amount, a yearly interest rate, how often it compounds and for how many years, and add a monthly or yearly deposit if you save regularly. You see the final balance, how much you put in, the interest earned, and a year-by-year table and chart. This is plain maths to help you plan; real accounts have fees, taxes and changing rates, and it is not financial advice.
Worked out in your browser. Nothing is sent anywhere.
How it grows
Interest on interest.
02 / Deposits
Saving as you go
Regular deposits are added each month or year, at the start or the end of the period.
03 / Plan
Not a promise
Real returns change. Use this to compare rates and habits, not as a forecast.
Questions
Good to know.
What is compound interest?
Interest that is added to your balance, so later interest is earned on it too.
How often should interest compound?
More often means slightly more interest. Check how your account compounds.
Does it include monthly deposits?
Yes. Set the deposit and pick month or year.
Why does it differ from my bank's figure?
Banks may count days differently, take fees or change the rate. This is a simple model.
Is this financial advice?
No. It is a calculator for planning.