Tax Freedom Day Assess how many days you'll work to pay your federal tax liability. You are viewing this website at a small screen resolution which doesn't support calculators. Click here to view this calculator. Share | Have A Question About This Topic? Name Email Address Question Thank you! Oops! Related Contents Making Your Tax Bracket Work Have you explored all your options when it comes to managing your taxable income? How Income Taxes Work A quick look at how federal income taxes work. Federal Income Tax Use this calculator to estimate your income tax liability along with average and marginal tax rates.