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? Address Thank you! Oops! Related Contents Comparing Investments This calculator compares the net gain of a taxable investment versus a tax-favored one. Death is No Excuse The federal government requires deceased individuals to file a final income tax return. Federal Income Tax Use this calculator to estimate your income tax liability along with average and marginal tax rates.