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. Share | Related Content Principles of Preserving Wealth How federal estate taxes work, plus estate management documents and tactics. Planning for All Families These planning tips can help. Do You Know the Whole Life Story? Change comes at us from every angle as people update and upgrade everything from their diets to their devices, seemingly every day.