Everywhere in the IRS web site and form instructions, it's said that you only need Form 8878 signature authorization to efile an extension (Form
4868) if direct debit is being authorized via the PIN method. Otherwise, no.As a practical matter, it seems a preparer can efile (or paper file) an extension for a taxpayer without having an IRS-recognized taxpayer signature on file. While I would not recommend doing so myself, it's not unheard of for a preparer to file blanket extensions for prior year clients they have been unsuccessful in contacting by 4/15, "just to be safe". (There does not appear to be any downside to filing a zero-balance-due extension, so no harm would result from this action). And yes, I realize that a zero-balance extension could be ruled invalid if the zero estimate was unreasonable, but again, no harm done if the taxpayer wasn't going to pay anything anyway.
So, on behalf of a fellow EA who remains unconvinced, I'm wondering, is there any statutory or regulatory cite that either allows a preparer to do this, or provides penalties for doing so? If not, do we go with "anything is allowed if not specifically prohibited", or "everything is prohibited unless specifically allowed?"
Related, are there any rules requiring paid preparers to efile extensions, similar to the rule which requires efiling of returns?