Compound Interest Calculator
See how savings grow with compound interest and regular contributions.
The power of compounding
Compound interest means you earn interest on both your original money and on the interest already added. The more frequently interest compounds, and the longer your money is invested, the more it grows.
The core formula for a lump sum is:
A = P · (1 + r/n)^(n·t)
where P is the principal, r the annual rate,
n the number of compounding periods per year and t the
number of years. Regular contributions are added on top and compound from the
moment they are deposited.