Paying Off a Credit Card Enter various payment options and determine how long it may take to pay off a credit card. You are viewing this website at a small screen resolution which doesn't support calculators. Click here to view this calculator. Related Content The A, B, C, & D of Medicare Learn about all the parts of Medicare with this informative and enjoyable article. Social Security: Maximizing Benefits There are other ways to maximize Social Security benefits, in addition to waiting to claim them. Federal Income Tax Use this calculator to estimate your income tax liability along with average and marginal tax rates.