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 Healthcare Costs in Retirement Without a solid approach, healthcare expenses may add up quickly and potentially alter your spending. Stop Wasting Money One way to find money is to examine your current spending habits and eliminate money wasters. Succeeding at Business Succession There are a number of reasons for business owners to consider a business succession plan sooner rather than later.