To upgrade or switch to a higher version of TurboTax Online please see this TurboTax FAQ: https://ttlc.intuit.com/community/upgrading/help/how-do-i-upgrade-or-switch-to-a-higher-version-of-t...
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Install on Windows or Mac? Do you have the CD or buy the download?
How to install Turbo Tax on Windows
If you are having trouble downloading to Windows
How to install on Mac