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 Question Thank you! Oops! Related Content A House Divided By understanding a few key concepts during a divorce, you may be able to avoid common pitfalls. The 12 Steps to Living Confidently: The Small Business Dream Starting a small business? First, take care of the basics. 5 essential steps to help position your new business for success. You May Need to Make Estimated Tax Payments If… Have income that isn’t subject to tax withholding? Or insufficient withholdings? You may have to pay estimated taxes.