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 401(k) Plans Are Not Just for Big Businesses Many small businesses are one person businesses. Ask a Financial Professional: Help! My Business is Overexten Every business wants to grow. But there’s a risk of extending your business so far, so fast that you hit the tipping point... Red Flags for Tax Auditors Here are six flags that may make your tax return prime for an IRS audit.