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 Financial Wellness on Your Path to Retirement Retirement is a significant milestone in life. Pursue financial wellness with these key strategies. Tips for Improving Your Financial Health into Retirement Here are ten key steps to help improve your financial health and make the most of your retirement years. Red Flags for Tax Auditors Here are six flags that may make your tax return prime for an IRS audit.