Savings calculator

Enter what you start with, what you add each month, a yearly rate, and a time horizon, and this calculator shows where the balance lands, how much you contributed, and how much it earned through compound interest, which simply means you earn interest on your interest, not just your original deposit.

That is why time matters as much as the amount: each year compounds on a larger balance, so the curve steepens over ten or twenty years, and adding years often helps more than adding to the monthly amount. Treat the figure as a clean estimate, since it assumes a steady rate and is before taxes and inflation.