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 How Boomers and Millennials Differ The YOLO Economy is a focus on experiences over material possessions, prompting Boomers to consider a similar mindset. Choosing a Business Structure Entrepreneurs all face the same question, “Which business structure should I adopt?” Choosing a Retirement Plan that Fits Your Business To choose a plan, it’s important to ask yourself four key questions.