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 Choose Your Own Retirement Adventure Retirement is one of the greatest adventures you’ll have. Which retirement adventure will you choose? Managing Money as a Couple Keys to preparing to grow wealthy together. What You Need to Know about Tax-Loss Harvesting While tax-loss harvesting won't eliminate your taxes, it may offset what you owe on your taxable investment accounts.