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. The Financial Literacy Crisis Many Americans are operating their personal finances with only the barest minimum of knowledge. How to Make the Tax Code Work for You When you take the time to learn more about how it works, you may be able to put the tax code to work for you.