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 Bridging the Confidence Gap In the world of finance, the effects of the "confidence gap" can be especially apparent. Behavioral Finance An amusing and whimsical look at behavioral finance best practices for investors. Find That Lost Retirement Account With over 24 million “forgotten” 401(k) accounts, you may be surprised to learn of your unclaimed “found” money.