BeginnerSlide lesson10 min
PTIN vs EFIN vs ERO vs Service Bureau
Who needs each credential, who issues it, what it authorizes, and how the four roles stack together in a real office.
Last reviewed: July 2026 · Tax year 2026 (post-OBBBA)
Who needs each credential, who issues it, what it authorizes, and how the four roles stack together in a real office.
Last reviewed: July 2026 · Tax year 2026 (post-OBBBA)