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 Question Thank you! Oops! Related Content Investments You’ve made investments your whole life. Work with us to help make the most of them. How Stocks Work Understanding how a stock works is key to understanding your investments. Deciding When to Take Social Security One of the most common questions people ask about Social Security is when they should start taking benefits.