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 Bull & Bear Markets: A Timeline This helpful infographic will define bull and bear markets, as well as give a historical overview. Federal Income Tax Use this calculator to estimate your income tax liability along with average and marginal tax rates. Comparing Investments This calculator compares the net gain of a taxable investment versus a tax-favored one.