File taxes for 2017 and 2016

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You would need to purchase, download and install on a personal computer one of the TurboTax desktop editions for each tax year from the following website - https://turbotax.intuit.com/personal-taxes/past-years-products/

Prior year tax returns can only be printed and mailed, they cannot be e-filed.

When mailing multiple tax years use a separate envelope for each tax year.