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 The Rule of 72 Do you know how long it may take for your investments to double in value? The Rule of 72 is a quick way to figure it out. Silver Sneakers 101 Medicare’s popular program, offering free gym membership and health education. Replacing Your Medicare Card Learn how to replace your lost, stolen, or damaged Medicare card in this helpful article.