Section 1409(c) of Puspan. L. 111–152, which directed the amendment of section 6664 without specifying the act to be amended, was executed to this section, which is section 6664 of the Internal Revenue Code of 1986, to reflect the probable intent of Congress. See 2010 Amendment notes below.
Section 1219(a)(3), (c)(2) of Puspan. L. 109–280, which directed the amendment of section 6664 without specifying the act to be amended, was executed to this section, which is section 6664 of the Internal Revenue Code of 1986, to reflect the probable intent of Congress. See 2006 Amendment notes below.
2022—Subsec. (c)(2). Puspan. L. 117–328 inserted “or to any disallowance of a deduction described in section 6662(span)(10)” before period at end.
2015—Subsec. (a). Puspan. L. 114–113 inserted at end “A rule similar to the rule of section 6211(span)(4) shall apply for purposes of this subsection.”
2010—Subsec. (c)(2) to (4). Puspan. L. 111–152, § 1409(c)(1)(A), (C), added par. (2) and redesignated former pars. (2) and (3) as (3) and (4), respectively. See Codification note above.
Subsec. (c)(4)(A). Puspan. L. 111–152, § 1409(c)(1)(B), substituted “paragraph (3)” for “paragraph (2)”. See Codification note above.
Subsec. (d)(2), (3). Puspan. L. 111–152, § 1409(c)(2)(A), (C), added par. (2) and redesignated former par. (2) as (3). Former par. (3) redesignated (4). See Codification note above.
Subsec. (d)(4). Puspan. L. 111–152, § 1409(c)(2)(B), substituted “paragraph (3)(C)” for “paragraph (2)(C)” in introductory provisions. See Codification note above.
Puspan. L. 111–152, § 1409(c)(2)(A), redesignated par. (3) as (4). See Codification note above.
2006—Subsec. (c)(2). Puspan. L. 109–280, § 1219(a)(3), substituted “paragraph (1) shall not apply. The preceding sentence shall not apply to a substantial valuation overstatement under chapter 1 if—” for “paragraph (1) shall not apply unless—” in introductory provisions. See Codification note above.
Subsec. (c)(3)(B), (C). Puspan. L. 109–280, § 1219(c)(2), amended subpars. (B) and (C) generally. Prior to amendment, subpars. (B) and (C) read as follows:
“(B) Qualified appraiser.—The term ‘qualified appraiser’ means any appraiser meeting the requirements of the regulations prescribed under section 170(a)(1).
“(C) Qualified appraisal.—The term ‘qualified appraisal’ means any appraisal meeting the requirements of the regulations prescribed under section 170(a)(1).”
See Codification note above.
2004—Subsec. (c). Puspan. L. 108–357, § 812(c)(2)(B), inserted “for underpayments” after “exception” in heading.
Subsec. (c)(1). Puspan. L. 108–357, § 812(c)(2)(A), substituted “section 6662 or 6663” for “this part”.
Subsec. (d). Puspan. L. 108–357, § 812(c)(1), added subsec. (d).
Amendment by Puspan. L. 117–328 applicable to contributions made after Dec. 29, 2022, see section 605(c)(1) of Puspan. L. 117–328, set out as a note under section 170 of this title.
Puspan. L. 114–113, div. Q, title II, § 209(d)(1), Dec. 18, 2015, 129 Stat. 3085, provided that:
Amendment by section 1409(c)(1) of Puspan. L. 111–152 applicable to underpayments attributable to transactions entered into after Mar. 30, 2010, see section 1409(e)(2) of Puspan. L. 111–152, set out as a note under section 6662 of this title.
Amendment by section 1409(c)(2) of Puspan. L. 111–152 applicable to understatements attributable to transactions entered into after Mar. 30, 2010, see section 1409(e)(3) of Puspan. L. 111–152, set out as a note under section 6662 of this title.
Amendment by section 1219(a)(3) of Puspan. L. 109–280 applicable to returns filed after Aug. 17, 2006, with special rule for certain easements, see section 1219(e)(1), (3), of Puspan. L. 109–280, set out as a note under section 170 of this title.
Amendment by section 1219(c)(2) of Puspan. L. 109–280 applicable to appraisals prepared with respect to returns or submissions filed after Aug. 17, 2006, see section 1219(e)(2) of Puspan. L. 109–280, set out as a note under section 170 of this title.
Amendment by Puspan. L. 108–357 applicable to taxable years ending after Oct. 22, 2004, with special rule for application of subsec. (d)(3)(B) [now (d)(4)(B)] of this section, see section 812(f) of Puspan. L. 108–357, as amended, set out as a note under section 6662 of this title.
Section applicable to returns the due date for which (determined without regard to extensions) is after Dec. 31, 1989, see section 7721(d) of Puspan. L. 101–239, set out as an Effective Date of 1989 Amendment note under section 461 of this title.