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 Long-Term-Care Needs Determine your potential long-term care needs and how long your current assets might last. Immediate vs. Deferred Annuities Looking forward to retirement? It's critical to understand the difference between immediate and deferred annuities. Choosing a Retirement Plan that Fits Your Business To choose a plan, it’s important to ask yourself four key questions.