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 The Anatomy of an Index The S&P 500 represents a large portion of the value of the U.S. equity market, it may be worth understanding. Retirement Redefined Around the country, attitudes about retirement are shifting. Estate Management 101 A will may be only one of the documents you need—and one factor to consider—when it comes to managing your estate.