How do I purchase 2018 Deluxe and Premier software?

[VolvoGirl]

Why do you need both?  All the Desktop programs have the same forms. You just get more help and guidance in the higher versions. 

And 1 Desktop program can do unlimited returns.  Buy Deluxe OR Premier here

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

[DoninGA]

Go to this TurboTax website for prior year software - https://turbotax.intuit.com/personal-taxes/past-years-products/

[VolvoGirl]

Oh and you can only install 1 version for each year.  All the Desktop programs come with 1 free state program Download which can prepare unlimited state returns (in that state).  If you need to file in a different state you can buy that state download.