Acres of Diamonds In life it often happens that the answers to our most pressing questions are right in our own backyards. Share | Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content Federal Income Tax Use this calculator to estimate your income tax liability along with average and marginal tax rates. What Do Your Taxes Pay For? Here's a breakdown of how the federal government spends your tax money. Social Security Taxes Estimate how much of your Social Security benefit may be considered taxable.