Unfortunately you cannot delete or close your TurboTax account. However you can delete all returns from the account.
When you login to your account, click on the trash can icon next to a return to delete it.
If you only have one return, it won’t show the trash can. Click “Start a new return” to create a blank return. Now you should be able to delete your return, leaving only the empty return in the account.
Thank you for choosing TurboTax.
