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 Best-Performing Asset Classes Bonds may outperform stocks one year only to have stocks rebound the next. Red Flags for Tax Auditors Here are six flags that may make your tax return prime for an IRS audit. Are Alternative Investments Right for You? With alternative investments, it’s critical to sort through the complexity.