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. Related Content Taxable vs. Tax-Deferred Savings Use this calculator to compare the future value of investments with different tax consequences. How Compound Interest Works Use this calculator to better see the potential impact of compound interest on an asset. Split Annuity Strategy Here's one strategy that combines two different annuities to generate income and rebuild principal.