You would not want to try using the same online account that has been used for past joint returns. It is too messy to get all of the "spouse stuff" out and you will get errors. When you use online to file married filing separately, you each need your own account and will pay for each one. With online, you get one return per fee--unlike the CD/download ---with which you could prepare and e-file up to five federal returns. If you have a full PC or Mac, you would be better off using the CD/download.
If you use the CD/download you only need ONE copy of it. "Basic" does not include state software---so if you need to prepare state returns, get Deluxe.
CD/DOWNLOAD (This requires a full PC or Mac—-cannot be used on a mobile device)
https://turbotax.intuit.com/personal-taxes/cd-download/
You can also purchase the CD/download from various retailers such as Costco, Amazon, Walmart, Best Buy, Staples, Sam’s Club, etc. etc. etc.
This link Where can I obtain authentic TurboTax software? has a list of authorized TurboTax resellers.
When you use desktop software, there is an additional fee to e-file a state return. You can avoid that fee if you print, sign and mail the state return. The state e-file fee is $20 and increases to $25 in March.
https://ttlc.intuit.com/community/system-requirements/help/minimum-system-requirements-for-turbotax-...
https://ttlc.intuit.com/turbotax-support/en-us/help-article/product-system-requirements/minimum-syst...
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
