What's My Potential Estate Tax? This calculator helps estimate your federal estate 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 Women on the Rise Explore the growing influence women wield over the economy with this handy infographic. Tax Freedom Day Assess how many days you'll work to pay your federal tax liability. A Brief History of Estate Taxes Federal estate taxes have long since been a lucrative source of funding for the federal government.