26 USC 6707A - Penalty for failure to include reportable transaction information with return

(a) Imposition of penalty 
Any person who fails to include on any return or statement any information with respect to a reportable transaction which is required under section 6011 to be included with such return or statement shall pay a penalty in the amount determined under subsection (b).
(b) Amount of penalty 

(1) In general 
Except as provided in paragraph (2), the amount of the penalty under subsection (a) shall be
(A) $10,000 in the case of a natural person, and
(B) $50,000 in any other case.
(2) Listed transaction 
The amount of the penalty under subsection (a) with respect to a listed transaction shall be
(A) $100,000 in the case of a natural person, and
(B) $200,000 in any other case.
(c) Definitions 
For purposes of this section:
(1) Reportable transaction 
The term reportable transaction means any transaction with respect to which information is required to be included with a return or statement because, as determined under regulations prescribed under section 6011, such transaction is of a type which the Secretary determines as having a potential for tax avoidance or evasion.
(2) Listed transaction 
The term listed transaction means a reportable transaction which is the same as, or substantially similar to, a transaction specifically identified by the Secretary as a tax avoidance transaction for purposes of section 6011.
(d) Authority to rescind penalty 

(1) In general 
The Commissioner of Internal Revenue may rescind all or any portion of any penalty imposed by this section with respect to any violation if
(A) the violation is with respect to a reportable transaction other than a listed transaction, and
(B) rescinding the penalty would promote compliance with the requirements of this title and effective tax administration.
(2) No judicial appeal 
Notwithstanding any other provision of law, any determination under this subsection may not be reviewed in any judicial proceeding.
(3) Records 
If a penalty is rescinded under paragraph (1), the Commissioner shall place in the file in the Office of the Commissioner the opinion of the Commissioner with respect to the determination, including
(A) a statement of the facts and circumstances relating to the violation,
(B) the reasons for the rescission, and
(C) the amount of the penalty rescinded.
(e) Penalty reported to SEC 
In the case of a person
(1) which is required to file periodic reports under section 13 or 15(d) of the Securities Exchange Act of 1934 or is required to be consolidated with another person for purposes of such reports, and
(2) which
(A) is required to pay a penalty under this section with respect to a listed transaction,
(B) is required to pay a penalty under section 6662A with respect to any reportable transaction at a rate prescribed under section 6662A (c), or
(C) is required to pay a penalty under section 6662 (h) with respect to any reportable transaction and would (but for section 6662A (e)(2)(B)) have been subject to penalty under section 6662A at a rate prescribed under section 6662A (c),

the requirement to pay such penalty shall be disclosed in such reports filed by such person for such periods as the Secretary shall specify. Failure to make a disclosure in accordance with the preceding sentence shall be treated as a failure to which the penalty under subsection (b)(2) applies.

(f) Coordination with other penalties 
The penalty imposed by this section shall be in addition to any other penalty imposed by this title.