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 Half Million Dollar Baby The true cost of raising a child may be far more than you expect. Should I Buy or Lease an Auto? This calculator compares the financial impact of leasing versus buying an automobile. A Brief History of Estate Taxes Federal estate taxes have long since been a lucrative source of funding for the federal government.