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 | Have A Question About This Topic? Name Email Address Question Thank you! Oops! Related Content What You Need to Know About Social Security Every so often, you’ll hear about Social Security benefits running out. But is there truth to the fears, or is it all hype? Retiring Wild: National Parks and You Get ready to enjoy America’s national park system with this helpful article. Understanding the Alternate Valuation Date Executors can value the estate on the date of death, or on its six-month anniversary —the “Alternate Valuation Date."