Federal Income Tax Use this calculator to estimate your income tax liability along with average and marginal tax rates. 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 Women and Financial Strategies Most women don’t shy away from the day-to-day financial decisions, but some may be leaving their future to chance. Investing with Your Heart For some, the social impact of investing is just as important as the return, perhaps more important. When Life Insurance Becomes Taxable Life insurance proceeds are generally tax-free. But not in all cases.