Can I still e-file a 2011 or earlier year tax return?
Individual Returns (Forms 1040, 1040A, and 1040EZ)
No. For individual (personal) tax returns, the e-filing "season" runs from mid-January to mid-October in the year immediately following the end of the tax year. This timeframe is determined by the IRS.
For example, the 2011 tax year ended on December 31, 2011, which means individual 2011 tax returns could only be e-filed from mid-January, 2012 through mid-October, 2012. After the October shutdown, individual 2011 returns must be paper-filed.
If you still need to prepare a 2011 or earlier tax return, you can purchase recent prior-year software and install it on your computer. TurboTax Online is not available for prior-year tax returns.
Business Returns (Forms 1120, 1120S, and 1065)
Business returns for the current and prior two tax years can be e-filed year-round.