Source: http://uscode.house.gov/view.xhtml?req=(title:26%20section:4980H%20edition:prelim)
Timestamp: 2019-04-18 21:10:46+00:00

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then there is hereby imposed on the employer an assessable payment equal to the product of the applicable payment amount and the number of individuals employed by the employer as full-time employees during such month.
then there is hereby imposed on the employer an assessable payment equal to the product of the number of full-time employees of the applicable large employer described in subparagraph (B) for such month and an amount equal to 1/12 of $3,000.
The aggregate amount of tax determined under paragraph (1) with respect to all employees of an applicable large employer for any month shall not exceed the product of the applicable payment amount and the number of individuals employed by the employer as full-time employees during such month.
The term "applicable payment amount" means, with respect to any month, 1/12 of $2,000.
The term "applicable large employer" means, with respect to a calendar year, an employer who employed an average of at least 50 full-time employees on business days during the preceding calendar year.
(II) the employees in excess of 50 employed during such 120-day period were seasonal workers.
The term "seasonal worker" means a worker who performs labor or services on a seasonal basis as defined by the Secretary of Labor, including workers covered by section 500.20(s)(1) of title 29, Code of Federal Regulations and retail workers employed exclusively during holiday seasons.
All persons treated as a single employer under subsection (b), (c), (m), or (o) of section 414 of the Internal Revenue Code of 1986 shall be treated as 1 employer.
In the case of an employer which was not in existence throughout the preceding calendar year, the determination of whether such employer is an applicable large employer shall be based on the average number of employees that it is reasonably expected such employer will employ on business days in the current calendar year.
Any reference in this subsection to an employer shall include a reference to any predecessor of such employer.
(II) the overall limitation under subsection (b)(2).
In the case of persons treated as 1 employer under subparagraph (C)(i), only 1 reduction under subclause (I) or (II) 1 shall be allowed with respect to such persons and such reduction shall be allocated among such persons ratably on the basis of the number of full-time employees employed by each such person.
Solely for purposes of determining whether an employer is an applicable large employer under this paragraph, an employer shall, in addition to the number of full-time employees for any month otherwise determined, include for such month a number of full-time employees determined by dividing the aggregate number of hours of service of employees who are not full-time employees for the month by 120.
(ii) under a health care program under chapter 17 or 18 of title 38, United States Code, as determined by the Secretary of Veterans Affairs, in coordination with the Secretary of Health and Human Services and the Secretary.
(C) any advance payment of such credit or reduction under section 1412 of such Act.
The term "full-time employee" means, with respect to any month, an employee who is employed on average at least 30 hours of service per week.
The Secretary, in consultation with the Secretary of Labor, shall prescribe such regulations, rules, and guidance as may be necessary to determine the hours of service of an employee, including rules for the application of this paragraph to employees who are not compensated on an hourly basis.
(ii) the premium adjustment percentage (as defined in section 1302(c)(4) of the Patient Protection and Affordable Care Act) for the calendar year.
If the amount of any increase under subparagraph (A) is not a multiple of $10, such increase shall be rounded to the next lowest multiple of $10.
Any term used in this section which is also used in the Patient Protection and Affordable Care Act shall have the same meaning as when used in such Act.
For denial of deduction for the tax imposed by this section, see section 275(a)(6).
Any assessable payment provided by this section shall be paid upon notice and demand by the Secretary, and shall be assessed and collected in the same manner as an assessable penalty under subchapter B of chapter 68.
The Secretary may provide for the payment of any assessable payment provided by this section on an annual, monthly, or other periodic basis as the Secretary may prescribe.
(3) Coordination with credits, etc.
The Secretary shall prescribe rules, regulations, or guidance for the repayment of any assessable payment (including interest) if such payment is based on the allowance or payment of an applicable premium tax credit or cost-sharing reduction with respect to an employee, such allowance or payment is subsequently disallowed, and the assessable payment would not have been required to be made but for such allowance or payment.
The Patient Protection and Affordable Care Act, referred to in subsecs. (a)(2), (b)(1)(B), and (c)(3)(B), (C), (5)(A)(ii), (6), is Pub. L. 111–148, Mar. 23, 2010, 124 Stat. 119 . Sections 1302(c)(4), 1402, 1411, and 1412 of the Act are classified to sections 18022(c)(4), 18071, 18081, and 18082, respectively, of Title 42, The Public Health and Welfare. Section 10108 of the Act enacted former section 139D of this title and section 18101 of Title 42, amended sections 36B, 162, 4980H, 6056, and 6724 of this title and section 218b of Title 29, Labor, and enacted provisions set out as notes under sections 36B, 162, 4980H, and 6056 of this title and former section 139D of this title. For complete classification of this Act to the Code, see Short Title note set out under section 18001 of Title 42 and Tables.
2018-Subsec. (c)(2)(F). Pub. L. 115–141 substituted "Department of Veterans Affairs" for "Veterans Administration" in heading.
2015-Subsec. (c)(2)(F). Pub. L. 114–41 added subpar. (F).
2011-Subsec. (b)(3). Pub. L. 112–10 struck out par. (3). Text read as follows: "No assessable payment shall be imposed under paragraph (1) for any month with respect to any employee to whom the employer provides a free choice voucher under section 10108 of the Patient Protection and Affordable Care Act for such month."
2010-Subsec. (b). Pub. L. 111–152, §1003(d), redesignated subsec. (c) as (b) and struck out former subsec. (b) which related to large employers with enrollment waiting periods exceeding 60 days.
Pub. L. 111–148, §10106(e), amended subsec. (b) generally. Prior to amendment, subsec. (b) related to large employers with enrollment waiting periods exceeding 30 days.
Subsec. (c). Pub. L. 111–152, §1003(d), redesignated subsec. (d) as (c). Former subsec. (c) redesignated (b).
Subsec. (c)(1). Pub. L. 111–152, §1003(b)(1), substituted "an amount equal to 1/12 of $3,000" for "400 percent of the applicable payment amount" in concluding provisions.
Subsec. (c)(3). Pub. L. 111–148, §10108(i)(1)(A), added par. (3).
Subsec. (d). Pub. L. 111–152, §1003(d), redesignated subsec. (e) as (d). Former subsec. (d) redesignated (c).
Subsec. (d)(1). Pub. L. 111–152, §1003(b)(2), substituted "$2,000" for "$750".
"(ii) subparagraph (B) shall be applied by substituting '5' for '50'."
Pub. L. 111–148, §10106(f)(2), added subpar. (D).
Subsec. (d)(2)(E). Pub. L. 111–152, §1003(c), added subpar. (E).
Subsec. (d)(4)(A). Pub. L. 111–148, §10106(f)(1), inserted ", with respect to any month," after "means".
Subsec. (d)(5)(A). Pub. L. 111–152, §1003(b)(3), substituted "subsection (b) and paragraph (1)" for "subsection (b)(2) and (d)(1)" in introductory provisions.
Subsec. (e). Pub. L. 111–152, §1003(d), redesignated subsec. (e) as (d).
Pub. L. 114–41, title IV, §4007(a)(2), July 31, 2015, 129 Stat. 466 , provided that: "The amendment made by this subsection [amending this section] shall apply to months beginning after December 31, 2013."
Amendment by Pub. L. 112–10 effective as if included in the provisions of, and the amendments made by, the provisions of Pub. L. 111–148 to which it relates, see section 1858(d) of Pub. L. 112–10, set out as a note under section 36B of this title.
Pub. L. 111–148, title X, §10106(f)(3), Mar. 23, 2010, 124 Stat. 911 , provided that: "The amendment made by paragraph (2) [amending this section] shall apply to months beginning after December 31, 2013."
Pub. L. 111–148, title X, §10108(i)(1)(B), Mar. 23, 2010, 124 Stat. 914 , provided that: "The amendment made by this paragraph [amending this section] shall apply to months beginning after December 31, 2013."
Pub. L. 111–148, title I, §1513(d), Mar. 23, 2010, 124 Stat. 256 , provided that: "The amendments made by this section [enacting this section] shall apply to months beginning after December 31, 2013."
1 So in original. Probably means subclause (I) or (II) of clause (i).

References: §1003
 §10106
 §1003
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 §10108
 §1003
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 §10106
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 §4007
 §10106
 §10108
 §1513