26 U.S.C. § 41
Credit for increasing research activities
The term “wages” has the meaning given such term by section 3401(a).
In the case of an employee (within the meaning of section 401(c)(1)), the term “wages” includes the earned income (as defined in section 401(c)(2)) of such employee.
The term “wages” shall not include any amount taken into account in determining the work opportunity credit under section 51(a).
The term “contract research expenses” means 65 percent of any amount paid or incurred by the taxpayer to any person (other than an employee of the taxpayer) for qualified research.
If any contract research expenses paid or incurred during any taxable year are attributable to qualified research to be conducted after the close of such taxable year, such amount shall be treated as paid or incurred during the period during which the qualified research is conducted.
Subparagraph (A) shall be applied by substituting “75 percent” for “65 percent” with respect to amounts paid or incurred by the taxpayer to a qualified research consortium for qualified research on behalf of the taxpayer and 1 or more unrelated taxpayers. For purposes of the preceding sentence, all persons treated as a single employer under subsection (a) or (b) of section 52 shall be treated as related taxpayers.
The term “small business” means, with respect to any calendar year, any person if the annual average number of employees employed by such person during either of the 2 preceding calendar years was 500 or fewer. For purposes of the preceding sentence, a preceding calendar year may be taken into account only if the person was in existence throughout the year.
Rules similar to the rules of subparagraphs (B) and (D) of section 220(c)(4) shall apply for purposes of this clause.
For purposes of this subparagraph, the term “Federal laboratory” has the meaning given such term by section 4(6) of the Stevenson-Wydler Technology Innovation Act of 1980 (15 U.S.C. 3703(6)), as in effect on the date of the enactment of the Energy Tax Incentives Act of 2005.
In no event shall the base amount be less than 50 percent of the qualified research expenses for the credit year.
Except as otherwise provided in this paragraph, the fixed-base percentage is the percentage which the aggregate qualified research expenses of the taxpayer for taxable years beginning after
The Secretary may prescribe regulations providing that de minimis amounts of gross receipts and qualified research expenses shall be disregarded under clauses (i) and (ii).
In no event shall the fixed-base percentage exceed 16 percent.
The percentages determined under subparagraphs (A) and (B)(ii) shall be rounded to the nearest 1/100th of 1 percent.
At the election of the taxpayer, the credit determined under subsection (a)(1) shall be equal to 14 percent of so much of the qualified research expenses for the taxable year as exceeds 50 percent of the average qualified research expenses for the 3 taxable years preceding the taxable year for which the credit is being determined.
The credit under this paragraph shall be determined under this subparagraph if the taxpayer has no qualified research expenses in any one of the 3 taxable years preceding the taxable year for which the credit is being determined.
The credit determined under this subparagraph shall be equal to 6 percent of the qualified research expenses for the taxable year.
An election under this paragraph shall apply to the taxable year for which made and all succeeding taxable years unless revoked with the consent of the Secretary.
Notwithstanding whether the period for filing a claim for credit or refund has expired for any taxable year taken into account in determining the fixed-base percentage, the qualified research expenses taken into account in computing such percentage shall be determined on a basis consistent with the determination of qualified research expenses for the credit year.
The Secretary may prescribe regulations to prevent distortions in calculating a taxpayer’s qualified research expenses or gross receipts caused by a change in accounting methods used by such taxpayer between the current year and a year taken into account in computing such taxpayer’s fixed-base percentage.
For purposes of this subsection, gross receipts for any taxable year shall be reduced by returns and allowances made during the taxable year. In the case of a foreign corporation, there shall be taken into account only gross receipts which are effectively connected with the conduct of a trade or business within the United States, the Commonwealth of Puerto Rico, or any possession of the United States.
Paragraph (1) shall be applied separately with respect to each business component of the taxpayer.
Any plant process, machinery, or technique for commercial production of a business component shall be treated as a separate business component (and not as part of the business component being produced).
Research shall in no event be treated as conducted for a purpose described in this paragraph if it relates to style, taste, cosmetic, or seasonal design factors.
Any research conducted after the beginning of commercial production of the business component.
Any research related to the adaptation of an existing business component to a particular customer’s requirement or need.
Any research related to the reproduction of an existing business component (in whole or in part) from a physical examination of the business component itself or from plans, blueprints, detailed specifications, or publicly available information with respect to such business component.
Any research conducted outside the United States, the Commonwealth of Puerto Rico, or any possession of the United States.
Any research in the social sciences, arts, or humanities.
Any research to the extent funded by any grant, contract, or otherwise by another person (or governmental entity).
In the case of a qualified organization described in subparagraph (C) or (D) of paragraph (6), clause (ii) of subparagraph (A) shall not apply.
Except in the case of a taxpayer which was in existence during a taxable year (other than a short taxable year) in the base period, the minimum basic research amount for any base period shall not be less than 50 percent of the basic research payments for the taxable year for which a determination is being made under this subsection.
The cost-of-living adjustment for any calendar year is the cost-of-living adjustment for such calendar year determined under section 1(f)(3), by substituting “calendar year 1987” for “calendar year 2016” in subparagraph (A)(ii) thereof.
If the base period of any taxpayer does not end in 1983 or 1984, section 1(f)(3)(A)(ii) shall, for purposes of this paragraph, be applied by substituting the calendar year in which such base period ends for 2016. Such substitution shall be in lieu of the substitution under clause (i).
The term “base period” means the 3-taxable-year period ending with the taxable year immediately preceding the 1st taxable year of the taxpayer beginning after
For purposes of applying subsection (b)(1) to this subsection, any basic research payments shall be treated as an amount paid in carrying on a trade or business of the taxpayer in the taxable year in which it is paid (without regard to the provisions of subsection (b)(3)(B)).
Under regulations prescribed by the Secretary, rules similar to the rules of subsection (d) of section 52 shall apply.
In the case of partnerships, the credit shall be allocated among partners under regulations prescribed by the Secretary.
If a person acquires the major portion of either a trade or business or a separate unit of a trade or business (hereinafter in this paragraph referred to as the “acquired business”) of another person (hereinafter in this paragraph referred to as the “predecessor”), then the amount of qualified research expenses paid or incurred by the acquiring person during the measurement period shall be increased by the amount determined under clause (ii), and the gross receipts of the acquiring person for such period shall be increased by the amount determined under clause (iii).
The amount determined under this clause is the amount which would be determined under clause (ii) if “the gross receipts of” were substituted for “the qualified research expenses paid or incurred by” each place it appears in clauses (ii) and (iv).
For purposes of this subparagraph, the term “measurement period” means, with respect to the taxable year of the acquiring person for which the credit is determined, any period of the acquiring person preceding such taxable year which is taken into account for purposes of determining the credit for such year.
In the case of any short taxable year, qualified research expenses and gross receipts shall be annualized in such circumstances and under such methods as the Secretary may prescribe by regulation.
All persons treated as a single employer under subsection (a) or (b) of section 52 shall be treated as related persons for purposes of subparagraph (A)(iii) and as a single person for purposes of subparagraph (A)(iv).
For purposes of subsection (a)(3), amounts paid or incurred for any energy research conducted outside the United States, the Commonwealth of Puerto Rico, or any possession of the United States shall not be taken into account.
Any amount taken into account under subsection (a)(3) shall not be taken into account under paragraph (1) or (2) of subsection (a).
The term “energy research” does not include any research which is not qualified research.
At the election of a qualified small business for any taxable year, section 3111(f) shall apply to the payroll tax credit portion of the credit otherwise determined under subsection (a) for the taxable year and such portion shall not be treated (other than for purposes of section 280C) as a credit determined under subsection (a).
Such term shall not include an organization which is exempt from taxation under section 501.
The amount specified in any election made under this subsection shall not exceed $250,000.
In the case of taxable years beginning after
A person may not make an election under this subsection if such person (or any other person treated as a single taxpayer with such person under paragraph (5)(A)) has made an election under this subsection for 5 or more preceding taxable years.
In the case of a qualified small business which is a partnership or S corporation, the election made under this subsection shall be made at the entity level.
Except as provided in subparagraph (B), all persons or entities treated as a single taxpayer under subsection (f)(1) shall be treated as a single taxpayer for purposes of this subsection.
The date of the enactment of the Energy Tax Incentives Act of 2005, referred to in subsec. (b)(3)(D)(iv), is the date of enactment of title XIII of Pub. L. 109–58, which was approved
A prior section 41, added Pub. L. 97–34, title III, § 331(a),
Another prior section 41 was renumbered section 24 of this title.
Subsec. (d)(1)(A). Pub. L. 119–21 amended subpar. (A) generally. Prior to amendment, subpar. (A) read as follows: “with respect to which expenditures may be treated as specified research or experimental expenditures under section 174,”.
2022—Subsec. (h)(4)(B)(i). Pub. L. 117–169, § 13902(a), designated existing provisions as subcl. (I), inserted heading, and added subcl. (II).
Subsec. (h)(5)(B)(ii). Pub. L. 117–169, § 13902(c), substituted “each of the $250,000 amounts” for “the $250,000 amount”.
2018—Subsec. (c)(4). Pub. L. 115–141, § 101(c)(1), (2), redesignated par. (5) as (4) and struck out former par. (4) which related to election of alternative incremental credit.
Subsec. (c)(4)(A). Pub. L. 115–141, § 401(b)(6), struck out “(12 percent in the case of taxable years ending before
Subsec. (c)(4)(C). Pub. L. 115–141, § 101(c)(3), struck out at end “An election under this paragraph may not be made for any taxable year to which an election under paragraph (4) applies.”
Subsec. (c)(5) to (7). Pub. L. 115–141, § 101(c)(2), redesignated pars. (5) to (7) as (4) to (6), respectively.
2017—Subsec. (d)(1)(A). Pub. L. 115–97, § 13206(d)(1), substituted “specified research or experimental expenditures under section 174” for “expenses under section 174”.
Subsec. (e)(5)(C)(i). Pub. L. 115–97, § 11002(d)(1)(F), substituted “for ‘calendar year 2016’ in subparagraph (A)(ii)” for “for ‘calendar year 1992’ in subparagraph (B)”.
Subsec. (e)(5)(C)(ii). Pub. L. 115–97, § 11002(d)(2), substituted “1(f)(3)(A)(ii)” for “1(f)(3)(B)” and “2016” for “1992”.
2015—Subsec. (h). Pub. L. 114–113, § 121(c)(1), added subsec. (h).
Pub. L. 114–113, § 121(a)(1), struck out subsec. (h) which provided the termination date for applicability of this section and the alternative incremental credit and provided the computation for taxable year in which credit terminates.
2014—Subsec. (h)(1). Pub. L. 113–295 substituted “paid or incurred after
“(A) after
“(B) after
2013—Subsec. (f)(1)(A)(ii). Pub. L. 112–240, § 301(c)(1), substituted “shall be determined on a proportionate basis to its share of the aggregate of the qualified research expenses, basic research payments, and amounts paid or incurred to energy research consortiums, taken into account by such controlled group for purposes of this section” for “shall be its proportionate shares of the qualified research expenses, basic research payments, and amounts paid or incurred to energy research consortiums, giving rise to the credit”.
Subsec. (f)(1)(B)(ii). Pub. L. 112–240, § 301(c)(2), substituted “shall be determined on a proportionate basis to its share of the aggregate of the qualified research expenses, basic research payments, and amounts paid or incurred to energy research consortiums, taken into account by all such persons under common control for purposes of this section” for “shall be its proportionate shares of the qualified research expenses, basic research payments, and amounts paid or incurred to energy research consortiums, giving rise to the credit”.
Subsec. (f)(3)(A). Pub. L. 112–240, § 301(b)(1), amended subpar. (A) generally. Prior to amendment, text read as follows: “If, after
Subsec. (f)(3)(B). Pub. L. 112–240, § 301(b)(2), amended subpar. (B) generally. Prior to amendment, text read as follows: “If, after
“(i) a taxpayer disposes of the major portion of any trade or business or the major portion of a separate unit of a trade or business in a transaction to which subparagraph (A) applies, and
“(ii) the taxpayer furnished the acquiring person such information as is necessary for the application of subparagraph (A),
then, for purposes of applying this section for any taxable year ending after such disposition, the amount of qualified research expenses paid or incurred by the taxpayer during periods before such disposition shall be decreased by so much of such expenses as is attributable to the portion of such trade or business or separate unit disposed of by the taxpayer, and the gross receipts of the taxpayer for such periods shall be decreased by so much of the gross receipts as is attributable to such portion.”
Subsec. (h)(1)(B). Pub. L. 112–240, § 301(a)(1), substituted “
2010—Subsec. (h)(1)(B). Pub. L. 111–312 substituted “
2008—Subsec. (c)(5)(A). Pub. L. 110–343, § 301(c), substituted “14 percent (12 percent in the case of taxable years ending before
Subsec. (h)(1)(B). Pub. L. 110–343, § 301(a)(1), substituted “
Subsec. (h)(2). Pub. L. 110–343, § 301(d), redesignated par. (3) as (2) related to computation for taxable year in which credit terminates.
Pub. L. 110–343, § 301(b), added par. (2). Former par. (2) redesignated (3).
Subsec. (h)(3). Pub. L. 110–343, § 301(d), amended par. (3) generally, redesignating it as par. (2) related to computation for taxable year in which credit terminated and amending heading and text generally. Prior to amendment, text read as follows: “In the case of any taxable year with respect to which this section applies to a number of days which is less than the total number of days in such taxable year, the base amount with respect to such taxable year shall be the amount which bears the same ratio to the base amount for such year (determined without regard to this paragraph) as the number of days in such taxable year to which this section applies bears to the total number of days in such taxable year.”
Pub. L. 110–343, § 301(b), redesignated par. (2) as (3).
2007—Subsec. (a)(3). Pub. L. 110–172, § 6(c)(1), inserted “for energy research” before period at end.
Subsec. (f)(1)(A)(ii), (B)(ii). Pub. L. 110–172, § 11(e)(2), substituted “qualified research expenses, basic research payments, and amounts paid or incurred to energy research consortiums,” for “qualified research expenses and basic research payments”.
Subsec. (f)(6)(E). Pub. L. 110–172, § 6(c)(2), added subpar. (E).
2006—Subsec. (c)(4)(A)(i). Pub. L. 109–432, § 104(b)(1)(A), substituted “3 percent” for “2.65 percent”.
Subsec. (c)(4)(A)(ii). Pub. L. 109–432, § 104(b)(1)(B), substituted “4 percent” for “3.2 percent”.
Subsec. (c)(4)(A)(iii). Pub. L. 109–432, § 104(b)(1)(C), substituted “5 percent” for “3.75 percent”.
Subsec. (c)(5) to (7). Pub. L. 109–432, § 104(c)(1), added par. (5) and redesignated former pars. (5) and (6) as (6) and (7), respectively.
Subsec. (h)(1)(B). Pub. L. 109–432, § 104(a)(1), substituted “2007” for “2005”.
2005—Subsec. (a)(3). Pub. L. 109–58, § 1351(a)(1), added par. (3).
Subsec. (b)(3)(C)(ii). Pub. L. 109–135, § 402(l)(2), struck out “(other than an energy research consortium)” after “organization” in introductory provisions.
Pub. L. 109–58, § 1351(a)(3), inserted “(other than an energy research consortium)” after “organization” in introductory provisions.
Subsec. (b)(3)(D). Pub. L. 109–58, § 1351(b), added subpar. (D).
Subsec. (f)(6). Pub. L. 109–58, § 1351(a)(2), added par. (6).
Subsec. (f)(6)(C), (D). Pub. L. 109–135, § 402(l)(1), added subpars. (C) and (D).
2004—Subsec. (h)(1)(B). Pub. L. 108–311 substituted “
1999—Subsec. (c)(4)(A)(i). Pub. L. 106–170, § 502(b)(1)(A), substituted “2.65 percent” for “1.65 percent”.
Subsec. (c)(4)(A)(ii). Pub. L. 106–170, § 502(b)(1)(B), substituted “3.2 percent” for “2.2 percent”.
Subsec. (c)(4)(A)(iii). Pub. L. 106–170, § 502(b)(1)(C), substituted “3.75 percent” for “2.75 percent”.
Subsecs. (c)(6), (d)(4)(F). Pub. L. 106–170, § 502(c)(1), inserted “, the Commonwealth of Puerto Rico, or any possession of the United States” before period at end.
Subsec. (h)(1). Pub. L. 106–170, § 502(a)(1)(B), struck out concluding provisions which read as follows: “Notwithstanding the preceding sentence, in the case of a taxpayer making an election under subsection (c)(4) for its first taxable year beginning after
Subsec. (h)(1)(B). Pub. L. 106–170, § 502(a)(1)(A), substituted “
1998—Subsec. (h)(1). Pub. L. 105–277 substituted “
1997—Subsec. (c)(4)(B). Pub. L. 105–34, § 601(b)(1), amended heading and text of subpar. (B) generally. Prior to amendment, text read as follows: “An election under this paragraph may be made only for the first taxable year of the taxpayer beginning after
Subsec. (h)(1). Pub. L. 105–34, § 601(a), substituted “
1996—Subsec. (b)(2)(D)(iii). Pub. L. 104–188, § 1201(e)(1), (4), substituted “work opportunity credit” for “targeted jobs credit” in heading and text.
Subsec. (b)(3)(C). Pub. L. 104–188, § 1204(d), added subpar. (C).
Subsec. (c)(3)(B)(i). Pub. L. 104–188, § 1204(b), reenacted heading without change and amended text generally. Prior to amendment, text read as follows: “The fixed-base percentage shall be determined under this subparagraph if there are fewer than 3 taxable years beginning after
Subsec. (c)(4) to (6). Pub. L. 104–188, § 1204(c), added par. (4) and redesignated former pars. (4) and (5) as (5) and (6), respectively.
Subsec. (h). Pub. L. 104–188, § 1204(a), reenacted heading without change and amended text generally. Prior to amendment, text read as follows:
“(1)
“(2)
1993—Subsec. (c)(3)(B)(ii). Pub. L. 103–66, § 13112(a), amended heading and text of cl. (ii) generally. Prior to amendment, text read as follows: “In a case to which this subparagraph applies, the fixed-base percentage is 3 percent.”
Subsec. (c)(3)(B)(iii). Pub. L. 103–66, § 13112(b)(1), substituted “clauses (i) and (ii)” for “clause (i)”.
Subsec. (c)(3)(D). Pub. L. 103–66, § 13112(b)(2), substituted “subparagraphs (A) and (B)(ii)” for “subparagraph (A)”.
Subsec. (e)(5)(C). Pub. L. 103–66, § 13201(b)(3)(C), substituted “1992” for “1989” in cls. (i) and (ii).
Subsec. (h). Pub. L. 103–66, § 13111(a)(1), substituted “
1991—Subsec. (h). Pub. L. 102–227 substituted “
1990—Subsec. (e)(5)(C)(i). Pub. L. 101–508, § 11101(d)(1)(C)(i), inserted before period at end “, by substituting ‘calendar year 1987’ for ‘calendar year 1989’ in subparagraph (B) thereof”.
Subsec. (e)(5)(C)(ii). Pub. L. 101–508, § 11101(d)(1)(C)(ii), (iii), substituted “1989” for “1987” and inserted at end “Such substitution shall be in lieu of the substitution under clause (i).”
Subsec. (h). Pub. L. 101–508, § 11402(a), substituted “
1989—Subsec. (a)(1)(B). Pub. L. 101–239, § 7110(b)(2)(A), amended subpar. (B) generally. Prior to amendment, subpar. (B) read as follows: “the base period research expenses, and”.
Subsec. (b)(4). Pub. L. 101–239, § 7110(b)[(c)], added par. (4).
Subsec. (c). Pub. L. 101–239, § 7110(b)(1), substituted “Base amount” for “Base period research expenses” in heading and amended text generally, substituting pars. (1) to (5) for former pars. (1) to (3) which defined “base period research expenses” and “base period” and prescribed minimum base period research expenses.
Subsec. (e)(7)(C)(ii). Pub. L. 101–239, § 7110(b)(2)(B), substituted “base amount” for “base period research expenses”.
Subsec. (f)(1). Pub. L. 101–239, § 7110(b)(2)(C), substituted “proportionate shares of the qualified research expenses and basic research payments” for “proportionate share of the increase in qualified research expenses” in subpars. (A)(ii) and (B)(ii).
Subsec. (f)(3)(A). Pub. L. 101–239, § 7110(b)(2)(D), substituted “
Subsec. (f)(3)(B). Pub. L. 101–239, § 7110(b)(2)(E), substituted “
Subsec. (f)(3)(C). Pub. L. 101–239, § 7110(b)(2)(F), substituted “Certain reimbursements taken into account in determining fixed-base percentage” for “Increase in base period” in heading, “for the taxable years taken into account in computing the fixed-base percentage shall be increased by the lesser of” for “for the base period for such taxable year shall be increased by the lesser of” in introductory provisions, and new cls. (i) and (ii) for former cls. (i) and (ii) which read as follows:
“(i) the amount of the decrease under subparagraph (B) which is allocable to such base period, or
“(ii) the product of the number of years in the base period, multiplied by the amount of the reimbursement described in this subparagraph.”
Subsec. (f)(4). Pub. L. 101–239, § 7110(b)(2)(G), inserted “and gross receipts” after “qualified research expenses”.
Subsec. (h). Pub. L. 101–239, § 7814(e)(2)(C), redesignated subsec. (i) as (h) and struck out former subsec. (h) which related to election, time for election, and manner of election by taxpayer to have research credit not apply for a taxable year.
Subsec. (h)(1). Pub. L. 101–239, § 7110(a)(1)(A), substituted “
Subsec. (h)(2). Pub. L. 101–239, § 7110(a)(1), substituted “
Pub. L. 101–239, § 7110(b)(2)(H), substituted “base amount” for “base period expenses” in heading and “the base amount with respect to such taxable year shall be the amount which bears the same ratio to the base amount for such year (determined without regard to this paragraph)” for “any amount for any base period with respect to such taxable year shall be the amount which bears the same ratio to such amount for such base period” in text.
Subsec. (i). Pub. L. 101–239, § 7814(e)(2)(C), redesignated subsec. (i) as (h).
1988—Subsec. (g). Pub. L. 100–647, § 1002(h)(1), inserted at end “If the amount determined under subsection (a) for any taxable year exceeds the limitation of the preceding sentence, such amount may be carried to other taxable years under the rules of section 39; except that the limitation of the preceding sentence shall be taken into account in lieu of the limitation of section 38(c) in applying section 39.”
Subsec. (h). Pub. L. 100–647, § 4008(b)(1), added subsec. (h). Former subsec. (h) redesignated (i).
Subsec. (i). Pub. L. 100–647, § 4008(b)(1), redesignated former subsec. (h) as (i).
Pub. L. 100–647, § 4007(a), substituted “1989” and “1990” for “1988” and “1989”, respectively, wherever appearing in subsec. (h), prior to redesignation as subsec. (i) by Pub. L. 100–647, § 4008(b)(1).
1986—Pub. L. 99–514, § 231(d)(2), renumbered section 30 of this title as this section.
Subsec. (a). Pub. L. 99–514, § 231(c)(1), amended subsec. (a) generally. Prior to amendment, subsec. (a) read as follows: “There shall be allowed as a credit against the tax imposed by this chapter for the taxable year an amount equal to 25 percent of the excess (if any) of—
“(1) the qualified research expenses for the taxable year, over
“(2) the base period research expenses.”
Subsec. (b)(2)(A)(iii). Pub. L. 99–514, § 231(e), amended cl. (iii) generally. Prior to amendment, cl. (iii) read as follows: “any amount paid or incurred to another person for the right to use personal property in the conduct of qualified research.”
Subsec. (b)(2)(D)(iii). Pub. L. 99–514, § 1847(b)(1), substituted “targeted jobs credit” for “new jobs or WIN credit” in heading.
Subsec. (d). Pub. L. 99–514, § 231(b), inserted “defined” in heading and amended text generally. Prior to amendment, text read as follows: “For purposes of this section the term ‘qualified research’ has the same meaning as the term research or experimental has under section 174, except that such term shall not include—
“(1) qualified research conducted outside the United States,
“(2) qualified research in the social sciences or humanities, and
“(3) qualified research to the extent funded by any grant, contract, or otherwise by another person (or any governmental entity).”
Subsec. (e). Pub. L. 99–514, § 231(c)(2), amended subsec. (e) generally, substituting “Credit allowable with respect to certain payments to qualified organizations for basic research” for “Credit available with respect to certain basic research by colleges, universities, and certain research organizations” in heading, and restating and expanding provisions of former pars. (1) to (4) into new pars. (1) to (7).
Subsec. (g). Pub. L. 99–514, § 231(d)(3)(C)(ii), amended subsec. (g) generally, substituting provisions relating to special rule for pass-thru of credit for provisions relating to limitation on amount of credit for research based on amount of tax liability.
Subsec. (h). Pub. L. 99–514, § 231(a)(1), added subsec. (h).
1984—Pub. L. 98–369, § 471(c), renumbered section 44F of this title as this section.
Subsec. (b)(2)(D)(iii). Pub. L. 98–369, § 474(i)(1)(A), substituted “in determining the targeted jobs credit under section 51(a)” for “in computing the credit under section 40 or 44B”.
Subsec. (g)(1)(A). Pub. L. 98–369, § 612(e)(1), substituted “section 26(b)” for “section 25(b)”.
Pub. L. 98–369, § 474(i)(1)(B), amended subpar. (A) generally, substituting “shall not exceed the taxpayer’s tax liability for the taxable year (as defined in section 25(b)), reduced by the sum of the credits allowable under subpart A and sections 27, 28, and 29” for “shall not exceed the amount of the tax imposed by this chapter reduced by the sum of the credits allowable under a section of this part having a lower number or letter designation than this section, other than the credits allowable by sections 31, 39, and 43. For purposes of the preceding sentence, the term ‘tax imposed by this chapter’ shall not include any tax treated as not imposed by this chapter under the last sentence of section 53(a)”.
1983—Subsec. (b)(2)(A). Pub. L. 97–448 inserted provision that cl. (iii) would not apply to any amount to the extent that the taxpayer (or any person with whom the taxpayer must aggregate expenditures under subsection (f)(1)) received or accrued any amount from any other person for the right to use substantially identical personal property.
1982—Subsec. (f)(2)(A). Pub. L. 97–354, § 5(a)(3)(A), substituted “Pass-thru in the case of estates and trusts” for “Pass-through in the case of subchapter S corporations, etc.” in subpar. heading, and substituted provisions relating to the applicability of rules similar to rules of subsec. (d) of section 52 for provisions relating to the applicability of rules similar to rules of subsecs. (d) and (e) of section 52.
Subsec. (g)(1)(B)(iv). Pub. L. 97–354, § 5(a)(3)(B), substituted “an S corporation” for “an electing small business corporation (within the meaning of section 1371(b))”.
Amendment by Pub. L. 119–21 applicable to amounts paid or incurred in taxable years beginning after
Pub. L. 117–169, title I, § 13902(d),
Amendment by section 101(c) of Pub. L. 115–141 effective as if included in the provision of the Protecting Americans from Tax Hikes Act of 2015, div. Q of Pub. L. 114–113, to which such amendment relates, see section 101(s) of Pub. L. 115–141, set out as a note under section 24 of this title.
Amendment by section 11002(d)(1)(F), (2) of Pub. L. 115–97 applicable to taxable years beginning after
Pub. L. 115–97, title I, § 13206(e),
Amendment by section 121(a)(1) of Pub. L. 114–113 applicable to amounts paid or incurred after
Amendment by section 121(c)(1) of Pub. L. 114–113 applicable to taxable years beginning after
Pub. L. 113–295, div. A, title I, § 111(c),
Pub. L. 112–240, title III, § 301(d),
Pub. L. 111–312, title VII, § 731(c),
Pub. L. 110–343, div. C, title III, § 301(e),
Amendment by section 6(c) of Pub. L. 110–172 effective as if included in the provisions of the Energy Policy Act of 2005, Pub. L. 109–58, to which such amendment relates, see section 6(e) of Pub. L. 110–172, set out as a note under section 30C of this title.
Pub. L. 110–172, § 11(e)(3),
Pub. L. 109–432, div. A, title I, § 104(a)(3),
Pub. L. 109–432, div. A, title I, § 104(b)(2), (3),
Pub. L. 109–432, div. A, title I, § 104(c)(2)–(4),
Amendment by Pub. L. 109–135 effective as if included in the provision of the Energy Policy Act of 2005, Pub. L. 109–58, to which such amendment relates, see section 402(m)(1) of Pub. L. 109–135, set out as an Effective and Termination Dates of 2005 Amendments note under section 23 of this title.
Pub. L. 109–58, title XIII, § 1351(c),
Pub. L. 108–311, title III, § 301(b),
Pub. L. 106–170, title V, § 502(a)(3),
Pub. L. 106–170, title V, § 502(b)(2),
Pub. L. 106–170, title V, § 502(c)(3),
Pub. L. 105–277, div. J, title I, § 1001(c),
Pub. L. 105–34, title VI, § 601(c),
Amendment by section 1201(e)(1), (4) of Pub. L. 104–188 applicable to individuals who begin work for the employer after
Pub. L. 104–188, title I, § 1204(f),
Amendment by section 13111(a)(1) of Pub. L. 103–66 applicable to taxable years ending after
Pub. L. 103–66, title XIII, § 13112(c),
Amendment by section 13201(b)(3)(C) of Pub. L. 103–66 applicable to taxable years beginning after
Amendment by Pub. L. 102–227 applicable to taxable years ending after
Amendment by section 11101(d)(1)(C) of Pub. L. 101–508 applicable to taxable years beginning after
Amendment by section 11402(a) of Pub. L. 101–508 applicable to taxable years beginning after
Pub. L. 101–239, title VII, § 7110(e),
Amendment by section 7814(e)(2)(C) of Pub. L. 101–239 effective, except as otherwise provided, as if included in the provision of the Technical and Miscellaneous Revenue Act of 1988, Pub. L. 100–647, to which such amendment relates, see section 7817 of Pub. L. 101–239, set out as a note under section 1 of this title.
Amendment by section 1002(h)(1) of Pub. L. 100–647 effective, except as otherwise provided, as if included in the provision of the Tax Reform Act of 1986, Pub. L. 99–514, to which such amendment relates, see section 1019(a) of Pub. L. 100–647, set out as a note under section 1 of this title.
Pub. L. 100–647, title IV, § 4008(d),
Pub. L. 99–514, title II, § 231(g),
Amendment by section 1847(b)(1) of Pub. L. 99–514 effective, except as otherwise provided, as if included in the provisions of the Tax Reform Act of 1984, Pub. L. 98–369, div. A, to which such amendment relates, see section 1881 of Pub. L. 99–514, set out as a note under section 48 of this title.
Amendment by section 474(i)(1) of Pub. L. 98–369 applicable to taxable years beginning after
Amendment by section 612(e)(1) of Pub. L. 98–369 applicable to interest paid or accrued after
Pub. L. 97–448, title I, § 102(h)(2),
Amendment by Pub. L. 97–354 applicable to taxable years beginning after
Pub. L. 97–34, title II, § 221(d),
For provisions that nothing in amendment by section 401(b)(6) of Pub. L. 115–141 be construed to affect treatment of certain transactions occurring, property acquired, or items of income, loss, deduction, or credit taken into account prior to
Pub. L. 109–432, div. A, title I, § 123,
Pub. L. 106–170, title V, § 502(d),
Pub. L. 101–239, title VII, § 7110(a)(2),
[Pub. L. 104–188, title I, § 1702(d)(1),
Pub. L. 100–647, title IV, § 4007(b),
For provisions directing that if any amendments made by subtitle A or subtitle C of title XI [§§ 1101–1147 and 1171–1177] or title XVIII [§§ 1800–1899A] of Pub. L. 99–514 require an amendment to any plan, such plan amendment shall not be required to be made before the first plan year beginning on or after
Pub. L. 98–369, div. A, title IV, § 474(i)(2),