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 When Heirs are Imperfect The money problems or bad lifestyle habits of adult children could lead to the squandering of any inheritance they receive. How Compound Interest Works Use this calculator to better see the potential impact of compound interest on an asset. Grantor Retained Annuity Trusts (GRATs) Explaining Grantor Retained Annuity Trusts (GRATs) and their benefit to estate strategy.