If you are going to file as Married Filing Separately then you have to create two separate tax returns and create two separate accounts with two separate and unique user ID's when using the online editions. Go to this TurboTax website for the online editions to create a new account - https://turbotax.intuit.com/personal-taxes/online/
You can use one email address for up to 5 user ID's when using the online editions.
