10.35—Requirements for covered opinions.
        
        (a) 
         A practitioner who provides a covered
 opinion shall comply with the standards of
 practice in this section.
    
    
    
    
        
        (2) Covered opinion—
        
        (i) In general.
         A covered opinion 
is written advice (including electronic
communications) by a practitioner concerning one
or more Federal tax issues arising from—
    
    
        
        (A) 
         A transaction that is the same as or
 substantially similar to a transaction that, at
 the time the advice is rendered, the Internal
 Revenue Service has determined to be a tax
 avoidance transaction and identified by published
 guidance as a listed transaction under  26 CFR
 1.6011-4(b)(2) ;
    
    
        
        (B) 
         Any partnership or other entity, any
 investment plan or arrangement, or any other plan
 or arrangement, the principal purpose of which is
 the avoidance or evasion of any tax imposed by the
 Internal Revenue Code; or
    
    
        
        (C) 
         Any partnership or other entity, any
 investment plan or arrangement, or any other plan
 or arrangement, a significant purpose of which is
 the  avoidance or evasion of any
 tax imposed by the Internal Revenue Code if the
 written advice—
    
    
         (1) Is a reliance
 opinion;
        
    
    
         (2) Is a marketed
 opinion;
        
    
    
         (3) Is subject to conditions of confidentiality; or
    
    
         (4) Is subject to contractual protection.
        
    
    
    
        
        (A) 
         Written advice provided to a client during
 the course of an engagement if a practitioner is
 reasonably expected to provide subsequent written
 advice to the client that satisfies the
 requirements of this section;
    
    
        
        (B) 
        
        (b) 
         n advice, other than advice described
in paragraph (b)(2)(i)(A) of this section
(concerning listed transactions) or paragraph
(b)(2)(ii)(B) of this section (concerning the
principal purpose of avoidance or evasion)
that—
    
    
         (1) Concerns the qualification of
 a qualified plan;
    
    
         (2) Is a State or local
 bond opinion; or
    
    
         (3) Is included in documents
 required to be filed with the Securities and
 Exchange Commission;
    
    
        
        (C) 
         Written advice prepared for and provided to
 a taxpayer, solely for use by that taxpayer, after
 the taxpayer has filed a tax return with the
 Internal Revenue Service reflecting the tax
 benefits of the transaction. The preceding
 sentence does not apply if the practitioner knows
 or has reason to know that the written advice will
 be relied upon by the taxpayer to take a position
 on a tax return (including for these purposes an
 amended return that claims tax benefits not
 reported on a previously filed return) filed after
 the date on which the advice is provided to the
 taxpayer;
    
    
        
        (D) 
         Written advice provided to an employer by a
 practitioner in that practitioner's capacity as an
 employee of that employer solely for purposes of
 determining the tax liability of the employer;
 or
    
    
        
        (E) 
         Written advice that does not resolve a
 Federal tax issue in the taxpayer's favor, unless
 the advice reaches a conclusion favorable to the
 taxpayer at any confidence level (e.g., not
 frivolous, realistic possibility of success,
 reasonable basis or substantial authority) with
 respect to that issue. If written advice concerns
 more than one Federal tax issue, the advice must
 comply with the requirements of paragraph (c) of
 this section with respect to any Federal tax issue
 not described in the preceding sentence.
    
    
        
        (3) 
         A Federal tax issue is a
 question concerning the Federal tax treatment of
 an item of income, gain, loss, deduction, or
 credit, the existence or absence of a taxable
 transfer of property, or the value of property for
 Federal tax purposes. For purposes of this
 subpart, a Federal tax issue is
 significant if the Internal Revenue Service has a
 reasonable basis for a successful challenge and
 its resolution could have a significant impact,
 whether beneficial or adverse and under any
 reasonably foreseeable circumstance, on the
 overall Federal tax treatment of the
 transaction(s) or matter(s) addressed in the
 opinion.
    
    
        
        (4) Reliance opinion—
        
        (i) 
         Written
advice is a reliance opinion if the
advice concludes at a confidence level of at least
more likely than not (a greater than 50 percent
likelihood) that one or more significant Federal
tax issues would be resolved in the taxpayer's
favor.
    
    
        
        (ii) 
        
        (b) 
         poses of this section, written
advice, other than advice described in paragraph
(b)(2)(i)(A) of this section (concerning listed
transactions) or paragraph (b)(2)(i)(B) of this
section (concerning the principal purpose of
avoidance or evasion), is not treated as a reliance opinion if the practitioner
prominently discloses in the written advice that
it was not intended or written by the practitioner
to be used, and that it cannot be used by the
taxpayer, for the purpose of avoiding penalties
that may be imposed on the taxpayer.
    
    
        
        (5) Marketed opinion—
        
        (i) 
         Written
advice is a marketed opinion if the
practitioner knows or has reason to know that the
written advice will be used or referred to by a
person other than the practitioner (or a person
who is a member of, associated with, or employed
by the practitioner's firm) in promoting,
marketing or recommending a partnership or other
entity, investment plan or arrangement to one or
more taxpayer(s).
    
    
        
        (ii) 
        
        (b) 
         poses of this section, written
advice, other than advice described in paragraph
(b)(2)(i)(A) of this section  (concerning listed transactions) or paragraph
(b)(2)(i)(B) of this section (concerning the
principal purpose of avoidance or evasion), is not
treated as a marketed opinion if the
practitioner prominently discloses in the written
advice that—
    
    
        
        (A) 
         The advice was not intended or written by
 the practitioner to be used, and that it cannot be
 used by any taxpayer, for the purpose of avoiding
 penalties that may be imposed on the taxpayer;
    
    
        
        (B) 
         The advice was written to support the
 promotion or marketing of the transaction(s) or
 matter(s) addressed by the written advice; and
    
    
        
        (C) 
         The taxpayer should seek advice based on
 the taxpayer's particular circumstances from an
 independent tax advisor.
    
    
        
        (6) 
        
            Conditions of
 confidentiality. Written advice is subject to
 conditions of confidentiality if the
 practitioner imposes on one or more recipients of
 the written advice a limitation on disclosure of
 the tax treatment or tax structure of the
 transaction and the limitation on disclosure
 protects the confidentiality of that
 practitioner's tax strategies, regardless of
 whether the limitation on disclosure is legally
 binding. A claim that a transaction is proprietary
 or exclusive is not a limitation on disclosure if
 the practitioner confirms to all recipients of the
 written advice that there is no limitation on
 disclosure of the tax treatment or tax structure
 of the transaction that is the subject of the
 written advice.
    
    
        
        (7) Contractual protection.
         
 Written advice is subject to contractual
 protection if the taxpayer has the right to a
 full or partial refund of fees paid to the
 practitioner (or a person who is a member of,
 associated with, or employed by the practitioner's
 firm) if all or a part of the intended tax
 consequences from the matters addressed in the
 written advice are not sustained, or if the fees
 paid to the practitioner (or a person who is a
 member of, associated with, or employed by the
 practitioner's firm) are contingent on the
 taxpayer's realization of tax benefits from the
 transaction. All the facts and circumstances
 relating to the matters addressed in the written
 advice will be considered when determining whether
 a fee is refundable or contingent, including the
 right to reimbursements of amounts that the
 parties to a transaction have not designated as
 fees or any agreement to provide services without
 reasonable compensation.
    
    
        
        (8) Prominently disclosed.
         An
 item is prominently disclosed if it is readily
 apparent to a reader of the written advice.
 Whether an item is readily apparent will depend on
 the facts and circumstances surrounding the
 written advice including, but not limited to, the
 sophistication of the taxpayer and the length of
 the written advice. At a minimum, to be
 prominently disclosed an item must be set forth in
 a separate section (and not in a footnote) in a
 typeface that is the same size or larger than the
 typeface of any discussion of the facts or law in
 the written advice.
    
    
        
        (9) State or local bond opinion.
         
 A State or local bond opinion is
 written advice with respect to a Federal
 tax issue included in any materials delivered
 to a purchaser of a State or local bond in
 connection with the issuance of the bond in a
 public or private offering, including an official
 statement (if one is prepared), that concerns only
 the excludability of interest on a State or local
 bond from gross income under  section 103 of the
 Internal Revenue Code, the application of  section
 55 of the Internal Revenue Code to a State or
 local bond, the status of a State or local bond as
 a qualified tax-exempt obligation under  section
 265(b)(3) of the Internal Revenue Code, the status
 of a State or local bond as a qualified zone
 academy bond under  section 1397E of the Internal
 Revenue Code, or any combination of the above.
    
    
        
        (10) The principal purpose.
         For
 purposes of this section, the principal purpose of
 a partnership or other entity, investment plan or
 arrangement, or other plan or arrangement is the
 avoidance or evasion of any tax imposed by the
 Internal Revenue Code if that purpose exceeds any
 other purpose. The principal purpose of a
 partnership or other entity, investment plan or
 arrangement, or other plan or arrangement is not
 to avoid or evade Federal tax if that partnership,
 entity, plan or arrangement has as its purpose the
 claiming of tax benefits in a manner  consistent with the statute and
 Congressional purpose. A partnership, entity, plan
 or arrangement may have a significant purpose of
 avoidance or evasion even though it does not have
 the principal purpose of avoidance or evasion
 under this paragraph (b)(10).
    
    
        
        (c) 
        
            Requirements for covered
 opinions. A practitioner providing a covered opinion must comply with each of the
 following requirements.
    
    
        
        (1) Factual matters.
        
        (i) 
         The
practitioner must use reasonable efforts to
identify and ascertain the facts, which may relate
to future events if a transaction is prospective
or proposed, and to determine which facts are
relevant. The opinion must identify and consider
all facts that the practitioner determines to be
relevant.
    
    
        
        (ii) 
         The practitioner must not base the opinion
 on any unreasonable factual assumptions (including
 assumptions as to future events). An unreasonable
 factual assumption includes a factual assumption
 that the practitioner knows or should know is
 incorrect or incomplete. For example, it is
 unreasonable to assume that a transaction has a
 business purpose or that a transaction is
 potentially profitable apart from tax benefits. A
 factual assumption includes reliance on a
 projection, financial forecast or appraisal. It is
 unreasonable for a practitioner to rely on a
 projection, financial forecast or appraisal if the
 practitioner knows or should know that the
 projection, financial forecast or appraisal is
 incorrect or incomplete or was prepared by a
 person lacking the skills or qualifications
 necessary to prepare such projection, financial
 forecast or appraisal. The opinion must identify
 in a separate section all factual assumptions
 relied upon by the practitioner.
    
    
        
        (iii) 
         The practitioner must not base the
 opinion on any unreasonable factual
 representations, statements or findings of the
 taxpayer or any other person. An unreasonable
 factual representation includes a factual
 representation that the practitioner knows or
 should know is incorrect or incomplete. For
 example, a practitioner may not rely on a factual
 representation that a transaction has a business
 purpose if the representation does not include a
 specific description of the business purpose or
 the practitioner knows or should know that the
 representation is incorrect or incomplete. The
 opinion must identify in a separate section all
 factual representations, statements or findings of
 the taxpayer relied upon by the practitioner.
    
    
        
        (2) Relate law to facts.
        
        (i) 
         The
opinion must relate the applicable law (including
potentially applicable judicial doctrines) to the
relevant facts.
    
    
        
        (ii) 
        
        (c) 
         ctitioner must not assume the
favorable resolution of any significant Federal
tax issue except as provided in paragraphs
(c)(3)(v) and (d) of this section, or otherwise
base an opinion on any unreasonable legal
assumptions, representations, or conclusions.
    
    
    
        
        (3) 
        
            Evaluation of significant Federal
 tax issues —(i) In general. The
 opinion must consider all significant Federal tax
 issues except as provided in paragraphs (c)(3)(v)
 and (d) of this section.
    
    
        
        (ii) 
        
            Conclusion as to each
 significant Federal tax issue. The opinion
 must provide the practitioner's conclusion as to
 the likelihood that the taxpayer will prevail on
 the merits with respect to each significant
 Federal tax issue considered in the opinion. If
 the practitioner is unable to reach a conclusion
 with respect to one or more of those issues, the
 opinion must state that the practitioner is unable
 to reach a conclusion with respect to those
 issues. The opinion must describe the reasons for
 the conclusions, including the facts and analysis
 supporting the conclusions, or describe the
 reasons that the practitioner is unable to reach a
 conclusion as to one or more issues. If the
 practitioner fails to reach a conclusion at a
 confidence level of at least more likely than not
 with respect to one or more significant Federal
 tax issues considered, the opinion must include
 the appropriate disclosure(s) required under
 paragraph (e) of this section.
    
    
        
        (iii) 
        
            Evaluation based on chances of
 success on the merits. In evaluating the
 significant Federal tax issues addressed in the
 opinion, the practitioner must not take into
 account the possibility that a tax return will not
 be audited, that an issue will not be raised
  on audit, or that an issue will
 be resolved through settlement if raised.
    
    
        
        (iv) Marketed opinions.
         In the
 case of a marketed opinion, the
 opinion must provide the practitioner's conclusion
 that the taxpayer will prevail on the merits at a
 confidence level of at least more likely than not
 with respect to each significant Federal tax
 issue. If the practitioner is unable to reach a
 more likely than not conclusion with respect to
 each significant Federal tax issue, the
 practitioner must not provide the marketed
 opinion, but may provide written advice that
 satisfies the requirements in paragraph (b)(5)(ii)
 of this section.
    
    
        
        (v) Limited scope opinions.
        
        (A) 
         
The practitioner may provide an opinion that
considers less than all of the significant Federal
tax issues if—
    
    
         (1) The practitioner and the
 taxpayer agree that the scope of the opinion and
 the taxpayer's potential reliance on the opinion
 for purposes of avoiding penalties that may be
 imposed on the taxpayer are limited to the Federal
 tax issue(s) addressed in the opinion;
    
    
         (2) The opinion is not advice
 described in paragraph (b)(2)(i)(A) of this
 section (concerning listed transactions),
 paragraph (b)(2)(i)(B) of this section (concerning
 the principal purpose of avoidance or evasion) or
 paragraph (b)(5) of this section (a marketed opinion ); and
    
    
         (3) The opinion includes the
 appropriate disclosure(s) required under paragraph
 (e) of this section.
    
    
        
        (B) 
         A practitioner may make reasonable
 assumptions regarding the favorable resolution of
 a Federal tax issue (an assumed issue) for
 purposes of providing an opinion on less than all
 of the significant Federal tax issues as provided
 in this paragraph (c)(3)(v). The opinion must
 identify in a separate section all issues for
 which the practitioner assumed a favorable
 resolution.
    
    
        
        (4) Overall conclusion.
        
        (i) 
         The
opinion must provide the practitioner's overall
conclusion as to the likelihood that the Federal
tax treatment of the transaction or matter that is
the subject of the opinion is the proper treatment
and the reasons for that conclusion. If the
practitioner is unable to reach an overall
conclusion, the opinion must state that the
practitioner is unable to reach an overall
conclusion and describe the reasons for the
practitioner's inability to reach a
conclusion.
    
    
        
        (ii) 
         In the case of a marketed
 opinion, the opinion must provide the
 practitioner's overall conclusion that the Federal
 tax treatment of the transaction or matter that is
 the subject of the opinion is the proper treatment
 at a confidence level of at least more likely than
 not.
    
    
        
        (d) 
        
            Competence to provide opinion;
 reliance on opinions of others. (1) The
 practitioner must be knowledgeable in all of the
 aspects of Federal tax law relevant to the opinion
 being rendered, except that the practitioner may
 rely on the opinion of another practitioner with
 respect to one or more significant Federal tax
 issues, unless the practitioner knows or should
 know that the opinion of the other practitioner
 should not be relied on. If a practitioner relies
 on the opinion of another practitioner, the
 relying practitioner's opinion must identify the
 other opinion and set forth the conclusions
 reached in the other opinion.
    
    
        
        (2) 
         The practitioner must be satisfied that the
 combined analysis of the opinions, taken as a
 whole, and the overall conclusion, if any, satisfy
 the requirements of this section.
    
    
        
        (e) Required disclosures.
         A
 covered opinion must contain all of the following
 disclosures that apply—
    
    
        
        (1) 
        
            Relationship between promoter and
 practitioner. An opinion must prominently
 disclose the existence of—
    
    
        
        (i) 
         Any compensation arrangement, such as a
 referral fee or a fee-sharing arrangement, between
 the practitioner (or the practitioner's firm or
 any person who is a member of, associated with, or
 employed by the practitioner's firm) and any
 person (other than the client for whom the opinion
 is prepared) with respect to promoting, marketing
 or recommending the entity, plan, or arrangement
 (or a substantially similar arrangement) that is
 the subject of the opinion; or
    
    
        
        (ii) 
         Any referral agreement between the
 practitioner (or the practitioner's firm or any
 person who is a member of, associated with, or
 employed by the practitioner's firm) and a person
 (other than the client for whom the opinion is
  prepared) engaged in promoting,
 marketing or recommending the entity, plan, or
 arrangement (or a substantially similar
 arrangement) that is the subject of the
 opinion.
    
    
    
        
        (i) 
         The opinion was written to support the
 promotion or marketing of the transaction(s) or
 matter(s) addressed in the opinion; and
    
    
        
        (ii) 
         The taxpayer should seek advice based on
 the taxpayer's particular circumstances from an
 independent tax advisor.
    
    
    
    
        
        (ii) 
         Additional issues may exist that could
 affect the Federal tax treatment of the
 transaction or matter that is the subject of the
 opinion and the opinion does not consider or
 provide a conclusion with respect to any
 additional issues; and
    
    
        
        (iii) 
         With respect to any significant Federal
 tax issues outside the limited scope of the
 opinion, the opinion was not written, and cannot
 be used by the taxpayer, for the purpose of
 avoiding penalties that may be imposed on the
 taxpayer.
    
    
        
        (4) 
        
            Opinions that fail to reach a
 more likely than not conclusion. An opinion
 that does not reach a conclusion at a confidence
 level of at least more likely than not with
 respect to a significant Federal tax issue must
 prominently disclose that—
    
    
        
        (i) 
         The opinion does not reach a conclusion at
 a confidence level of at least more likely than
 not with respect to one or more significant
 Federal tax issues addressed by the opinion;
 and
    
    
        
        (ii) 
         With respect to those significant Federal
 tax issues, the opinion was not written, and
 cannot be used by the taxpayer, for the purpose of
 avoiding penalties that may be imposed on the
 taxpayer.
    
    
        
        (5) 
        
            Advice regarding required
 disclosures. In the case of any disclosure
 required under this section, the practitioner may
 not provide advice to any person that is contrary
 to or inconsistent with the required
 disclosure.
    
    
        
        (f) 
        
            Effect of opinion that meets
 these standards —(1) In general. 
 An opinion that meets the requirements of this
 section satisfies the practitioner's
 responsibilities under this section, but the
 persuasiveness of the opinion with regard to the
 tax issues in question and the taxpayer's good
 faith reliance on the opinion will be determined
 separately under applicable provisions of the law
 and regulations.
    
    
        
        (2) 
        
            Standards for other written
 advice. A practitioner who provides written
 advice that is not a covered opinion for purposes
 of this section is subject to the requirements of
  § 10.37.