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 Do You Feel Lucky? Recent changes in estate tax laws could affect the strategy you have in place. Will Power Preparing for the eventual distribution of your assets may not sound enticing. But a will puts the power in your hands. Principles of Preserving Wealth How federal estate taxes work, plus estate management documents and tactics.