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? 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. 9 Facts About Social Security There are things about Social Security that might surprise you. Funding Your Future Health Care Needs A little planning now can go a long way to help take care of yourself in the future.