Citizens for Tax Justice has an online calculator that will tell you what you’d pay in federal taxes in 2013 under three different scenarios:
1) Congress did nothing during the New Year and allowed the “fiscal cliff” to take effect.
2) Congress extended all tax cuts in effect in 2012 and delayed all tax increases that were scheduled to go into effect.
3) Congress enacted the American Taxpayer Relief Act, which extended most, but not all tax cuts. This is the law that was actually enacted.
If you are an employee, your income comes entirely from wages or salary, and you take the standard deduction, click here to calculate your likely taxes in 2013 under the three different scenarios.
If you have other types of income or if your situation is more complicated, click here to calculate your likely taxes in 2013 under the three different scenarios.