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 Question Thank you! Oops! Related Content Why Regular Rebalancing Makes Sense Without your knowing, your investment portfolio could be off-kilter. Your Shifting Risk Tolerance Time and market performance may subtly and slowly imbalance your portfolio. Split Annuity Strategy Here's one strategy that combines two different annuities to generate income and rebuild principal.