You can only file one tax return per TurboTax Online account. If you want to file a second return online, you'll have to create another account (with its own user id and password). If you are preparing multiple returns for friends or family, it is more economical to use the TurboTax CD/Download software (desktop) product, which lets you e-file up to 5 federal returns at no extra cost. Please see the FAQs below for more information.
How do I start another return in TurboTax Online?
https://ttlc.intuit.com/replies/3288574
