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How to file previous years
How do I file previous tax years?
To do your taxes for prior years, you will need the tax software for those years. TurboTax Online is only available for the current year, however, you can purchase the CD/Download versions for prior years here to prepare your returns for the past 3 years:
Prior year tax returns cannot be electronically filed, however once you have prepared your return using TurboTax, you can print out a copy to mail to the IRS.
More detailed information: https://ttlc.intuit.com/questions/1900990-how-do-i-file-a-prior-year-tax-return
