After you file

You can only do the last 3 years with Turbo Tax.  You can buy the last 3 years of Turbo Tax here,

https://turbotax.intuit.com/personal-taxes/past-years-products/

You will need a full Windows or Mac to install it on.

 

How to prepare a prior year return

https://ttlc.intuit.com/community/using-turbotax/help/how-do-i-prepare-a-prior-year-tax-return/00/25...


For older returns you have to go somewhere else or get the blank forms from the IRS.  

Here is the link to all the prior year IRS forms

Prior Year Forms and Instructions | Internal Revenue Service

 

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