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 A Brief History of Estate Taxes Federal estate taxes have long since been a lucrative source of funding for the federal government. Social Security Taxes Estimate how much of your Social Security benefit may be considered taxable. Social Media: #NewestBusinessLiabilityRisk Social media may be a modern imperative for businesses looking to grow and build their brand, but it also introduces risk.