Investment Calculator
Project how an investment could grow. Enter a starting amount, a monthly contribution, an expected annual return and the number of years, and the calculator estimates your end balance, how much you put in and how much came from returns.
$
$
%
End balance
$224,386.10
Total contributions$82,000.00
Total return$142,386.10
How it works
The balance grows by compounding: each month the existing balance earns a share of the annual return, and the new contribution is added. End balance equals the starting amount grown over time plus the future value of all contributions. Total return is the end balance minus everything you contributed.
Frequently asked questions
What return rate should I use?
Use a realistic long-term estimate for your investment. Broad stock market averages have historically been around 7 to 10 percent before inflation, but returns are never guaranteed.
How is this different from compound interest?
It uses the same compounding maths, but is framed for investing with regular contributions, and it separates your contributions from the growth.
Are returns guaranteed?
No. This is an estimate for planning only. Real investment returns vary and can be negative in some years.