You can find your answer in the white box at the bottom of the calculator. We arrived at this answer by assuming that you are starting without any money in your savings kitty, and that your monthly contributions will compound at a 4% annual rate, which is typical for a bank CD or Money Market account. If you've already got some money stashed away, or if you think your savings can earn more than 4% a year, simply input your own assumptions into the fields below, and then click on Calculate.