SECTION 18. WHAT IS THE
Internal Revenue Bulletin 2007-1 · 2026-10-03 edition · updated 2026-10-04 · United States
EFFECT OF A TAM?
Applies only to the taxpayer for whom TAM was requested
This requirement does not apply to a TAM involving a criminal or civil fraud investigation, or a jeopardy or termination assessment, as described in section 11.07 of this revenue procedure, or documents to which § 6104 (document open to public inspection) applies as described in section 10.03.
.05 After receiving the notice under § 6110(f)(1) of intention to disclose the TAM, the taxpayer may protest the disclosure of certain information in it. The taxpayer must submit a written statement within 20 calendar days identifying those deletions not made by the Service that the taxpayer believes should have been made. The taxpayer must also submit a copy of the version of the TAM proposed to be open to public inspection with brackets around deletions proposed by the taxpayer that have not been made by EP or EO Technical.
Generally, EP or EO Technical considers only the deletion of material that the taxpayer has proposed be deleted or other deletions as required under § 6110(c) before the EP or EO Technical reply is sent to the EP or EO Examinations office or the EP or EO Determinations office or the Appeals Area Director, Area 4. Within 20 calendar days after it receives the taxpayer’s response to the notice under § 6110(f)(1), EP or EO Technical must mail the taxpayer its final administrative conclusion about the deletions to be made.
.06 If EP or EO Technical tells the EP or EO Examinations office or the EP or EO Determinations office or the Appeals Area Director, Area 4, that a copy of the TAM should not be given to the taxpayer and the taxpayer requests a copy, the EP or EO Examinations office or the EP or EO Determinations office or the Appeals Area Director, Area 4, will tell the taxpayer that no copy will be given.
.01 A taxpayer may not rely on a TAM issued by the Service for another taxpayer.
Usually applies retroactively .02 Except when stated otherwise, a holding in a TAM is applied retroactively, unless the Commissioner, Tax Exempt and Government Entities Division exercises discretionary authority under § 7805(b) to limit the retroactive effect of the holding. Section 18.06 below lists the criteria necessary for granting § 7805(b) relief, and section 18 of this revenue procedure describes the effect of § 7805(b) relief.
Generally applied retroactively to modify or revoke prior TAM
Applies to continuing action or series of actions until specifically withdrawn, modified or revoked
Applies to continuing action or series of actions until material facts change
Does not apply retroactively under certain conditions
.03 A holding that modifies or revokes a holding in a prior TAM is applied retroactively, with one exception. If the new holding is less favorable to the taxpayer than the earlier one, it generally is not applied to the period when the taxpayer relied on the prior holding in situations involving continuing transactions.
.04 If a TAM relates to a continuing action or a series of actions, ordinarily it is applied until specifically withdrawn or until the conclusion is modified or revoked by enactment of legislation, ratification of a tax treaty, a decision of the United States Supreme Court, or the issuance of regulations (temporary or final), a revenue ruling, or other statement published in the Internal Revenue Bulletin. Publication of a notice of proposed rulemaking does not affect the application of a TAM.
.05 A taxpayer is not protected against retroactive modification or revocation of a TAM involving a continuing action or a series of actions occurring after the material facts on which the TAM is based have changed.
.06 Generally, a TAM that modifies or revokes a letter ruling or another TAM or a determination letter is not applied retroactively either to the taxpayer to whom or for whom the letter ruling or TAM or determination letter was originally issued, or to a taxpayer whose tax liability was directly involved in such letter ruling or TAM or determination letter if—
(1) there has been no misstatement or omission of material facts;
Sec. 18.06 2007–1 I.R.B. 183 January 2, 2007
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