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 My Retirement Savings Estimate how long your retirement savings may last using various monthly cash flow rates. Rebalancing Your Portfolio Over time, different investments' performances can shift a portfolio’s intent and risk profile. Rebalancing may be critical. Bursting the Bubble Tulips were the first, but they won’t be the last. What forms a “bubble” and what causes them to burst?