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 Message Thank you! Oops! Related Content Put It in a Letter A letter of instruction provides additional and more personal information regarding your estate. Social Security: By the Numbers Here are five facts about Social Security that might surprise you. Required Reading: The Economic Report of the President The Economic Report of the President can help identify the forces driving — or dragging — the economy.