A
AcadiFi
SC
SEE3_Checklist2026-05-20
eaPart 3Return Preparer IdentifiersPractice and Procedure

What is the difference between a PTIN and an EFIN?

I know both numbers show up in tax-practice conversations, but I keep mixing them up. Which one belongs to the preparer and which one belongs to the e-file provider?

45 upvotes
AcadiFi TeamVerified Expert
AcadiFi Certified Professional

A PTIN is the individual paid preparer's identifier. A compensated preparer who prepares or assists in preparing all or substantially all of a federal return generally needs a PTIN unless an exception applies.

An EFIN is tied to an approved IRS e-file provider application. It identifies the provider involved in electronic filing. A firm can have an EFIN after completing the application and passing suitability checks. The EFIN is not a substitute for the preparer's PTIN, and the PTIN is not a substitute for e-file provider authorization.

Short version:

  • PTIN: individual preparer.
  • EFIN: authorized e-file provider.
  • Form 8879: taxpayer authorization to e-file.
  • Signed return copy: taxpayer and preparer record of what was filed.
🏛️

Master Part 3 with our EA Course

195 lessons · 180+ hours· Expert instruction

#ptin#efin#paid-preparer#return-signature