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 Do You Feel Lucky? Recent changes in estate tax laws could affect the strategy you have in place. A Primer on Irrevocable Life Insurance Trusts Irrevocable life insurance trusts can be important tools that may accomplish a number of estate objectives. Principles of Preserving Wealth How federal estate taxes work, plus estate management documents and tactics.