Compound interest calculator
How much will your savings be worth in 10, 20 or 30 years with a monthly deposit? Or how much should you put aside to reach a goal?
Year-by-year details
Assumes a constant return, with no fees, taxes or inflation: real returns vary a lot from year to year. Not investment advice.
See also: if I had invested… (real prices) · capital gains calculator
FAQ
What is compound interest?
Your gains earn gains in turn: money snowballs. The longer the period, the stronger the effect.
What return should I use?
No return is guaranteed in the stock market. Over very long periods, broad world indices have averaged a few percent a year after inflation, with some very negative years. Try several assumptions, including cautious ones.
How much should I save each month to reach a goal?
Use the "Reach a goal" mode: enter the target, the duration and the assumed return, and the tool computes the monthly amount.