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 Question Thank you! Oops! Related Content Annuity Comparison This calculator compares a hypothetical fixed annuity with an account where the interest is taxed each year. Three Key Questions to Answer Before Taking Social Security When to start? Should I continue to work? How can I maximize my benefit? Investing with Your Heart For some, the social impact of investing is just as important as the return, perhaps more important.