If you wish, you may download the software by clicking this link: https://turbotax.intuit.com/personal-taxes/compare/desktop/
One of the advantages of desktop software is the ability to e-file up to 5 separate returns. Also, if you want to file a joint federal return, but wish to or need to file separate state returns, desktop software is advantageous for that as well. (You can use a separate account to create a "mock" return for the spouse who needs to file a separate state return).
Once you've downloaded the software, follow the instructions in this FAQ to transfer your online file to the desktop software: https://ttlc.intuit.com/replies/3302260
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