three years
The Internal Revenue Service limits the amount of time you have to file a 1040X to the later of three years from the date you file the original tax return, or two years from the time you pay the tax for that year.

Can I amend an old tax return?

If you want to make changes after the original tax return has been filed, you must file an amended tax return using a special form called the 1040X, entering the corrected information and explaining why you are changing what was reported on your original return. You don’t have to redo your entire return, either.

What happens when you file an amended tax return?

You will receive any additional refund you are owed. Amending to pay additional tax. If you’re filing an amended tax return because you owe more tax, you should file Form 1040X and pay the tax as soon as possible. This will limit interest and penalty charges.

When do I need to amend my 2014 tax return?

example Robert’s 2014 tax return was due April 15, 2015. He filed it on March 20, 2015. He amends the 2014 return, expecting the correction to result in a refund. If he gets it postmarked on or before April 15, 2018, it will be within the three-year limit, and the return will be accepted.

Is there an amended Form 1040X for 2016?

Form 1040X Amended U.S. Individual Income Tax Return Form1040X (Rev. January 2016) Department of the Treasury—Internal Revenue Service Amended U.S. Individual Income Tax Return ▶Information about Form 1040X and its separate instructions is at OMB No. 1545-0074 This return is for calendar year 2015201420132012 Other year.

Where do I go to amend my federal tax return?

If taxpayers receive a notice from the IRS, refer them to the contact person and telephone number on the notice. If the federal return has to be amended, often the state return must also be amended. example Two weeks after Bernard’s current-year tax return was filed, he received another Form W-2 in the mail.