You can purchase & download the 2018 TurboTax software at the following link.
Before installing TurboTax on a PC, it's best to close any open programs, including firewall and virus-protection programs (but don't forget to turn them back on after installation is complete).
Installing from a download: Simply double-click the downloaded file to launch the installer. Find your download.
Installing from the CD: If installation doesn't start automatically after you insert the CD into your computer's CD drive, follow the directions below.
Tip: If you bought the CD but your computer lacks a CD drive, you can request the downloadable version.
It’s a 14-digit combination of letters and numbers (XXXX-XXXXX-XXXXX) that can be found on your CD box insert, envelope, or packing slip, or in your Download confirmation email and/or order history. Need help finding it? Go here.
That's it! When you're ready to do your state return, we'll walk you through the state download and installation.
If you purchased the 2018 desktop edition you should be able to download the installation file from your download account using the same User ID you used to purchase the software - https://shopping.turbotax.intuit.com/unified/downloads?route=myaccounts
If you have not yet purchased the 2018 desktop editions then go to this website to purchase, download and install on a personal computer one of the 2018 desktop editions - https://turbotax.intuit.com/personal-taxes/past-years-products/
See this TurboTax support FAQ for downloading the software purchase - https://ttlc.intuit.com/community/installing/help/how-do-i-download-the-software-i-purchased-at-turb...