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 | Have A Question About This Topic? Address Thank you! Oops! Related Contents When Special Care Is Needed: The Special Needs Trust A special needs trust helps care for a special needs child when you’re gone. Why You Need an Estate Strategy Do you have an estate strategy? You should. Principles of Preserving Wealth How federal estate taxes work, plus estate management documents and tactics.