Calculate the return on an investment while continually
adding money
This calculator will calculate the growth of an investment. However it
allows for money to be added to the investment. While it asks for the
amount added each year, the script assumes this money is added continuously
as opposed to big chunks. Depending on when you add this money to your nest
egg will change the output, but only slightly. The APR is the annual
percentage rate you expect to earn. For example, if you
invest $100 and expect to have $105 in one years time, that's an APR of 5%.
This is different from the instantaneous interest rate as explained in
this document.