Social Security Taxes Estimate how much of your Social Security benefit may be considered taxable. 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 Message Thank you! Oops! Related Content A Brief History of Estate Taxes Federal estate taxes have long since been a lucrative source of funding for the federal government. Understanding Equity Compensation Net Unrealized Appreciation and how it affects tax responsibilities. Grantor Retained Annuity Trusts (GRATs) Explaining Grantor Retained Annuity Trusts (GRATs) and their benefit to estate strategy.