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 Four Steps to Valuing an Estate Determining the value of your estate, or for someone who has passed away, can be a complex undertaking. Should You Invest in Exchange Traded Funds? There are thousands of ETFs available. Should you invest in them? Eight Mistakes That Can Upend Your Retirement There are common mistakes you can avoid when saving for retirement.