Investors & landlords

Form 3115 and attachments have to be sent in separately ahead of filing (preferably quite a ways ahead).  The rules for that are in the Form 3115 IRS instructions....   And Form 3115 also has to be part of the tax filing itself (an unsigned copy).

IF I e-file, I know that I have to mail in 8453 separately and I'm sure it needs to include the separate documentation that I attached to the original Form 3115.    What I'm confused by is whether Turbo Tax efile submits Form 3115 (it is in TurboTax and I can fill it out there) or whether I send it along with 8453.     IF I don't have a clear answer, I will send it in with 8453 (can't hurt, I assume).