If you are filing as Married filing separately, you will need to file a separate return and use a separate account to do so. If you are filing as Married filing jointly, you will enter all of your information as well as your spouse's information in one return.
To file an additional return using TurboTax Online,
you will need to create a new account. Please see the following TurboTax
FAQ for instructions on how to start another return using TurboTax Online.
https://ttlc.intuit.com/replies/3288574
