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You can file your 2013 return before you file 2011 or 2012.
The only potential problem would be if you had information from the earlier years that has to be carried forward to the 2013 tax year.
You would either need to call the companies you worked for during those years ORcontact the IRS and ask for transcripts of your account for 2011 & 2012.You can order the transcripts on the IRS website at IRS.gov or by calling the IRS at 1-800-829-1040.
If you need to contact me again with any tax or financial questions, you can just ask for "Steve G" at the beginning of your question. Again, please remember to rate my response. Bonuses, where you think they are warranted, and excellent ratings, are always most appreciated. Thanks again for using JustAnswer.com.You may get a short survey from the site; if it isn't too much trouble I would appreciate it if you would answer it; the survey results are used to rate our performance;