How Compound Interest Works Use this calculator to better see the potential impact of compound interest on an asset. You are viewing this website at a small screen resolution which doesn't support calculators. Click here to view this calculator. Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content Countdown to College Preparing for college means setting goals, staying focused, and tackling a few key milestones along the way. Annuity Comparison This calculator compares a hypothetical fixed annuity with an account where the interest is taxed each year. Paying Off a Credit Card Enter various payment options and determine how long it may take to pay off a credit card.