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 Question Thank you! Oops! Related Content It Was the Best of Times, It Was the Worst of Times All about how missing the best market days (or the worst!) might affect your portfolio. Impact of Taxes and Inflation Estimate the potential impact taxes and inflation can have on the purchasing power of an investment. Comparing Investments This calculator compares the net gain of a taxable investment versus a tax-favored one.