A
AcadiFi
EE
EA_EfileOps2026-05-20
eaPart 3E-file ProviderPractice and Procedure

Can another preparer use my firm's EFIN?

A nearby preparer asked whether our firm could transmit their clients' returns under our EFIN while they sort out their own e-file access. They would use their own PTINs. Is the PTIN enough to make this okay?

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AcadiFi TeamVerified Expert
AcadiFi Certified Professional

No, the PTIN alone is not enough. A PTIN identifies an individual paid preparer. An EFIN identifies the authorized IRS e-file provider whose application, suitability, principals, responsible officials, and filing activity are tied to the electronic submission.

Before any transmission relationship, the firm should verify whether the other party is an authorized provider with a valid EFIN, whether the arrangement fits IRS e-file provider roles, whether the return is being received directly from the taxpayer when required, and whether your firm can monitor and control filings under your EFIN.

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The exam answer should be conservative when a suspended or unauthorized provider is trying to file through someone else's EFIN.

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