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! Test Your Investment Knowledge! How much do you know about investing? Take our quiz and find out instantly. First Name Last Name Email Address Thank you! Oops! Related Content Capital Gains Tax Estimator Use this calculator to estimate your capital gains tax. U.S. Personal Savings Rate What can be learned from the savings rate? Why Regular Rebalancing Makes Sense Without your knowing, your investment portfolio could be off-kilter.