If your spouse’s name does not appear on the extension, then you can create a new TurboTax Online account for them and file another extension in just their name.
Important: Filing an extension extends the deadline to file, but not the due date for any taxes due. If you believe taxes will be due, you must pay them by 4/18/17 to avoid penalties. The Easy Extension process includes an option to make a payment of any taxes due directly from your checking or savings account
Note: The information below will help you create a new TurboTax Online account and file another extension.
How do I file an IRS extension (Form 4868) in TurboTax Online?, please see the following TurboTax FAQ: https://ttlc.intuit.com/replies/3301811
