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. Have A Question About This Topic? Name Email Address Question Thank you! Oops! Related Content Capital Gains Tax Estimator Use this calculator to estimate your capital gains tax. How Big is Money? Learn a little about worldwide currency in this fun infographic Put It in a Letter A letter of instruction provides additional and more personal information regarding your estate.