Inflation & Retirement Estimate how much income may be needed at retirement to maintain your standard of living. 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! Test Your Investment Knowledge! How much do you know about investing? Take our quiz and find out instantly. First Name Last Name Email Address Thank you! Oops! Related Content Understanding Marginal Income Tax Brackets An inside look at how marginal income tax brackets work. 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.