With desktop software you can use the same program to prepare and e-file up to five federal returns and their associated state returns. With online TurboTax, you get ONE return per fee. Separate fees are charged for federal and state. Each return needs its own email, its own account and its own user ID.
https://ttlc.intuit.com/community/using-turbotax/help/how-do-i-start-another-return-in-turbotax-onli...
https://turbotax.intuit.com/personal-taxes/online/file-your-own-taxes/
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