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 Eight Mistakes That Can Upend Your Retirement There are common mistakes you can avoid when saving for retirement. Problems with Probate Probate can be a completely public process, or it can be managed to include as little information as possible. Emotional vs. Strategic Decisions Information vs. instinct. Are your choices based on evidence of emotion?