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. Related Content Filing Final Tax Returns for the Deceased The federal government requires deceased individuals to file a final income tax return. Investing with Your Heart For some, the social impact of investing is just as important as the return, perhaps more important. Social Security: Maximizing Benefits There are other ways to maximize Social Security benefits, in addition to waiting to claim them.