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 4 Elements of an Estate Strategy Learn about the importance of having an estate strategy in this helpful and informative video. A Brief History of Estate Taxes Federal estate taxes have long since been a lucrative source of funding for the federal government. Principles of Preserving Wealth How federal estate taxes work, plus estate management documents and tactics.