There is an app for that.
Americans will see a steep jump in their tax bills starting in January 2013 unless lawmakers reach an agreement to soften the impact of expiring tax breaks — known as the “fiscal cliff” — by the end of 2012. But just how much of an impact will that be?
Based on an analysis of tax rates by the Tax Policy Center, this calculator computes a combined bill for federal income and Social Security taxes. Type your income, select your exemptions and filing status and hit “calculate” for an estimate of your tax bill under current rates, and rates as they would rise in 2013.