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 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 A Brief History of Estate Taxes Federal estate taxes have long since been a lucrative source of funding for the federal government. What Is My Current Net Worth? Use this calculator to estimate your net worth by adding up your assets and subtracting your liabilities.