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 Critical Estate Documents Sound estate management includes creating financial and healthcare documents. Here's an inside look. Principles of Preserving Wealth How federal estate taxes work, plus estate management documents and tactics.