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 Why Regular Rebalancing Makes Sense Without your knowing, your investment portfolio could be off-kilter. Deciding When to Take Social Security One of the most common questions people ask about Social Security is when they should start taking benefits. Keeping Up with the Joneses Lifestyle inflation can be the enemy of wealth building. What could happen if you invested instead of buying more stuff?