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 Message Thank you! Oops! Related Content Retirement Plan Detectives A couple become Retirement Plan Detectives, searching records from old employers. How Solid is Your Offensive Line? As quarterback of your life, here’s a fun way to think about protecting your financial future. IRA Withdrawals that Escape the 10% Tax Penalty The list of IRA withdrawals that may be taken without incurring a 10% early penalty has grown.