How do I locate my SID number or MeF number on Turbo Tax using Mac. I filed my own taxes but I need this number for a loan refinancing?

[AngelaRivers]

I have been asked to fill out form 8879.

[DoninGA]

A form 8879, IRS e-file Signature Authorization is only used by ERO's which are paid tax professional who e-file tax returns for clients.

TurboTax is tax preparation software and the tax returns filed are all self-prepared by the user of the software so there is not a Form 8879 required.  There will not be a SID or MeF number.

If you e-filed your tax return using TurboTax there will be an Electronic Postmark Report which has the date/time the tax return was e-filed and the date it was accepted by the IRS, if accepted.  

[rjs]

It's rare for a lender to ask for an MeF Submission ID (SID), but if they insist on it, you have to call TurboTax support to get it. Your MeF Submission ID is not anywhere in your tax return or in the TurboTax software.

Form 8879 is not used when you file your tax return yourself with TurboTax. Form 8879 is used only to authorize a paid tax preparer to e-file your tax return for you. You don't have to authorize yourself to file your own tax return. If someone is asking you for Form 8879, either they think you paid someone to do your tax return, or they don't understand how tax returns are filed.

You could try explaining to the person who's asking for it that you filed by yourself, or ask to speak to a supervisor or other higher-level person who knows more about how tax returns are filed. If that doesn't work, and you'd rather just make them happy instead of trying to convince them, here's what you could do. Download Form 8879 from the IRS web site. Fill in the top part, and parts I and II. Print the filled-in form and sign Part II. Make a photo copy of the signed form and give the copy to whoever is asking for it.