I found this neat little investment calculator template on mactopia and thought that I would share it here in numbers form for all of you. Its pretty simple just type in your initial balance (or even your current balance), how many years you plan to pursue this investment, the average interest rate (I like to use the 30 year average on my investment accounts) and finally your monthly contributions. This will then generate a detailed account of what you stand to earn over the course of the investment. Of course this is not prophesy, but who knows! I hope you enjoy.