26 U.S.C. § 21
Expenses for household and dependent care services necessary for gainful employment
In the case of an individual for which there are 1 or more qualifying individuals (as defined in subsection (b)(1)) with respect to such individual, there shall be allowed as a credit against the tax imposed by this chapter for the taxable year an amount equal to the applicable percentage of the employment-related expenses (as defined in subsection (b)(2)) paid by such individual during the taxable year.
An individual shall not be treated as having the same principal place of abode of the taxpayer if at any time during the taxable year of the taxpayer the relationship between the individual and the taxpayer is in violation of local law.
If the taxpayer is married at the close of the taxable year, the credit shall be allowed under subsection (a) only if the taxpayer and his spouse file a joint return for the taxable year.
An individual legally separated from his spouse under a decree of divorce or of separate maintenance shall not be considered as married.
The term “student” means an individual who during each of 5 calendar months during the taxable year is a full-time student at an educational organization.
The term “educational organization” means an educational organization described in section 170(b)(1)(A)(ii).
No credit shall be allowed under this section with respect to any qualifying individual unless the TIN of such individual is included on the return claiming the credit.
The Secretary shall prescribe such regulations as may be necessary to carry out the purposes of this section.
If the taxpayer (in the case of a joint return, either spouse) has a principal place of abode in the United States (determined as provided in section 32) for more than one-half of the taxable year, the credit allowed under subsection (a) shall be treated as a credit allowed under subpart C (and not allowed under this subpart).
Subsection (a)(2) shall be applied by substituting “the phaseout percentage” for “20 percent”.
The term “phaseout percentage” means 20 percent reduced (but not below zero) by 1 percentage point for each $2,000 (or fraction thereof) by which the taxpayer’s adjusted gross income for the taxable year exceeds $400,000.
The Secretary shall pay to each possession of the United States with a mirror code tax system amounts equal to the loss (if any) to that possession by reason of the application of this section (determined without regard to this subsection) with respect to taxable years beginning in or with 2021. Such amounts shall be determined by the Secretary based on information provided by the government of the respective possession.
The Secretary shall pay to each possession of the United States which does not have a mirror code tax system amounts estimated by the Secretary as being equal to the aggregate benefits that would have been provided to residents of such possession by reason of this section with respect to taxable years beginning in or with 2021 if a mirror code tax system had been in effect in such possession. The preceding sentence shall not apply unless the respective possession has a plan, which has been approved by the Secretary, under which such possession will promptly distribute such payments to its residents.
For purposes of this subsection, the term “mirror code tax system” means, with respect to any possession of the United States, the income tax system of such possession if the income tax liability of the residents of such possession under such system is determined by reference to the income tax laws of the United States as if such possession were the United States.
For purposes of section 1324 of title 31, United States Code, the payments under this subsection shall be treated in the same manner as a refund due from a credit provision referred to in subsection (b)(2) of such section.
A prior section 21 was renumbered section 15 of this title.
2025—Subsec. (a)(2). Pub. L. 119–21 amended par. (2) generally. Prior to amendment, text read as follows: “For purposes of paragraph (1), the term ‘applicable percentage’ means 35 percent reduced (but not below 20 percent) by 1 percentage point for each $2,000 (or fraction thereof) by which the taxpayer’s adjusted gross income for the taxable year exceeds $15,000.”
2021—Subsec. (g). Pub. L. 117–2, § 9631(a), added subsec. (g).
Subsec. (h). Pub. L. 117–2, § 9631(b), added subsec. (h).
2007—Subsec. (e)(5). Pub. L. 110–172 substituted “section 152(e)(4)(A)” for “section 152(e)(3)(A)” in concluding provisions.
2005—Subsec. (b)(1)(B). Pub. L. 109–135 inserted “(as defined in section 152, determined without regard to subsections (b)(1), (b)(2), and (d)(1)(B))” after “dependent of the taxpayer”.
2004—Subsec. (a)(1). Pub. L. 108–311, § 203(a), substituted “In the case of an individual for which there are 1 or more qualifying individuals (as defined in subsection (b)(1)) with respect to such individual” for “In the case of an individual who maintains a household which includes as a member one or more qualifying individuals (as defined in subsection (b)(1))”.
Subsec. (b)(1). Pub. L. 108–311, § 203(b), reenacted heading without change and amended text generally. Prior to amendment, text read as follows: “The term ‘qualifying individual’ means—
“(A) a dependent of the taxpayer who is under the age of 13 and with respect to whom the taxpayer is entitled to a deduction under section 151(c),
“(B) a dependent of the taxpayer who is physically or mentally incapable of caring for himself, or
“(C) the spouse of the taxpayer, if he is physically or mentally incapable of caring for himself.”
Subsec. (e)(1). Pub. L. 108–311, § 203(c), amended heading and text of par. (1) generally. Prior to amendment, text read as follows: “An individual shall be treated as maintaining a household for any period only if over half the cost of maintaining the household for such period is furnished by such individual (or, if such individual is married during such period, is furnished by such individual and his spouse).”
Subsec. (e)(5). Pub. L. 108–311, § 207(2), struck out “paragraph (2) or (4) of” before “section 152(e)” in subpar. (A) and substituted “as defined in section 152(e)(3)(A)” for “within the meaning of section 152(e)(1)” in concluding provisions.
Subsec. (e)(6)(B). Pub. L. 108–311, § 207(3), substituted “section 152(f)(1)” for “section 151(c)(3)”.
2002—Subsec. (d)(2)(A). Pub. L. 107–147, § 418(b)(1), substituted “$250” for “$200”.
Subsec. (d)(2)(B). Pub. L. 107–147, § 418(b)(2), substituted “$500” for “$400”.
2001—Subsec. (a)(2). Pub. L. 107–16, § 204(b), substituted “35 percent” for “30 percent” and “$15,000” for “$10,000”.
Subsec. (c)(1). Pub. L. 107–16, § 204(a)(1), substituted “$3,000” for “$2,400”.
Subsec. (c)(2). Pub. L. 107–16, § 204(a)(2), substituted “$6,000” for “$4,800”.
1996—Subsec. (e)(10). Pub. L. 104–188 added par. (10).
1988—Subsec. (b)(1)(A). Pub. L. 100–485, § 703(a), substituted “age of 13” for “age of 15”.
Subsec. (c). Pub. L. 100–485, § 703(b), inserted at end: “The amount determined under paragraph (1) or (2) (whichever is applicable) shall be reduced by the aggregate amount excludable from gross income under section 129 for the taxable year.”
Subsec. (e)(5)(B). Pub. L. 100–485, § 703(a), substituted “age of 13” for “age of 15”.
Subsec. (e)(9). Pub. L. 100–485, § 703(c)(1), added par. (9).
1987—Subsec. (b)(2)(A). Pub. L. 100–203 inserted at end “Such term shall not include any amount paid for services outside the taxpayer’s household at a camp where the qualifying individual stays overnight.”
1986—Subsecs. (b)(1)(A), (e)(6)(A). Pub. L. 99–514, § 104(b)(1)(A), substituted “section 151(c)” for “section 151(e)”.
Subsec. (e)(6)(B). Pub. L. 99–514, § 104(b)(1)(B), substituted “section 151(c)(3)” for “section 151(e)(3)”.
1984—Pub. L. 98–369, § 471(c), renumbered section 44A of this title as this section.
Subsec. (a)(1). Pub. L. 98–369, § 474(c)(2), (3), substituted “subsection (b)(1)” for “subsection (c)(1)” and “subsection (b)(2)” for “subsection (c)(2)”.
Subsec. (b). Pub. L. 98–369, § 474(c)(1), redesignated subsec. (c) as (b). Former subsec. (b), which provided that the credit allowed by subsec. (a) could not exceed the amount of the tax imposed by this chapter for the taxable year reduced by the sum of the credits allowable under sections 33, 37, 38, 40, 41, 42, and 44, was struck out.
Subsec. (c). Pub. L. 98–369, § 474(c)(1), redesignated subsec. (d) as (c). Former subsec. (c) redesignated (b).
Subsec. (d). Pub. L. 98–369, § 474(c)(1), redesignated subsec. (e) as (d). Former subsec. (d) redesignated (c).
Subsec. (d)(2). Pub. L. 98–369, § 474(c)(4), substituted “subsection (b)(1)(C)” for “subsection (c)(1)(C)” in introductory provisions.
Subsec. (d)(2)(A). Pub. L. 98–369, § 474(c)(5), substituted “subsection (c)(1)” for “subsection (d)(1)”.
Subsec. (d)(2)(B). Pub. L. 98–369, § 474(c)(6), substituted “subsection (c)(2)” for “subsection (d)(2).
Subsec. (e). Pub. L. 98–369, § 474(c)(1), redesignated subsec. (f) as (e). Former subsec. (e) redesignated (d).
Subsec. (e)(5). Pub. L. 98–369, § 474(c)(7), substituted “subsection (b)(1)” for “subsection (c)(1)” in provisions following subpar. (B).
Pub. L. 98–369, § 423(c)(4), amended par. (5) generally, substituting subpars. (A) and (B) reading:
“(A) paragraph (2) or (4) of section 152(e) applies to any child with respect to any calendar year, and
“(B) such child is under the age of 15 or is physically or mentally incapable of caring for himself,”
for former provisions:
“(A) a child (as defined in section 151(e)(3)) who is under the age of 15 or who is physically or mentally incapable of caring for himself receives over half of his support during the calendar year from his parents who are divorced or legally separated under a decree of divorce or separate maintenance or who are separated under a written separation agreement, and
“(B) such child is in the custody of one or both of his parents for more than one-half of the calendar year.”
and substituted in concluding text “(whichever is appropriate) with respect to the custodial parent (within the meaning of section 152(e)(1)), and shall not be treated as a qualifying individual with respect to the noncustodial parent” for “, as the case may be, with respect to that parent who has custody for a longer period during such calendar year than the other parent, and shall not be treated as being a qualifying individual with respect to such other parent.”
Subsecs. (f), (g). Pub. L. 98–369, § 474(c)(1), redesignated subsecs. (f) and (g) as (e) and (f), respectively.
1983—Subsec. (b)(2). Pub. L. 98–21 substituted “relating to credit for the elderly and the permanently and totally disabled” for “relating to credit for the elderly”.
1981—Subsec. (a). Pub. L. 97–34, § 124(a), designated existing provisions as par. (1), substituted “the applicable percentage” for “20 percent” in par. (1) as so designated, and added par. (2).
Subsec. (c)(2)(B). Pub. L. 97–34, § 124(c), designated existing provisions as cl. (i) and added cl. (ii).
Subsec. (c)(2)(C), (D). Pub. L. 97–34, § 124(d), added subpars. (C) and (D).
Subsec. (d)(1). Pub. L. 97–34, § 124(b)(1)(A), substituted “$2,400” for “$2,000”.
Subsec. (d)(2). Pub. L. 97–34, § 124(b)(1)(B), substituted “$4,800” for “$4,000”.
Subsec. (e)(2)(A). Pub. L. 97–34, § 124(b)(2)(A), substituted “$200” for “$166”.
Subsec. (e)(2)(B). Pub. L. 97–34, § 124(b)(2)(B), substituted “$400” for “$333”.
1978—Subsec. (f)(6). Pub. L. 95–600 substituted provision disallowing a credit for any amount paid by a taxpayer to an individual with respect to whom, for the taxable year, a deduction under section 151(e) is allowable either to the taxpayer or his spouse or who is a child of the taxpayer who has not attained the age of 19 at the close of the taxpayer year and defining “taxpayer year” for provision disallowing a credit for any amount paid by the taxpayer to an individual bearing a relationship described in section 152(a)(1) through (8), or a dependent described in section 152(a)(9), except that a credit was allowed for an amount paid by a taxpayer to an individual with respect to whom, for the taxable year of the taxpayer in which the service was performed, neither the taxpayer nor his spouse was entitled to a deduction under section 151(e), provided the service constituted employment within the meaning of section 3121(b).
Pub. L. 119–21, title VII, § 70405(b),
Pub. L. 117–2, title IX, § 9631(d),
Pub. L. 109–135, title IV, § 404(d),
Amendment by Pub. L. 108–311 applicable to taxable years beginning after
Pub. L. 107–147, title IV, § 418(c),
Pub. L. 107–16, title II, § 204(c),
Pub. L. 104–188, title I, § 1615(d),
Pub. L. 100–485, title VII, § 703(d),
Pub. L. 100–203, title X, § 10101(b),
Amendment by Pub. L. 99–514 applicable to taxable years beginning after
Amendment by section 423(c)(4) of Pub. L. 98–369 applicable to taxable years beginning after
Pub. L. 98–369, title IV, § 475(a),
Amendment by Pub. L. 98–21 applicable to taxable years beginning after
Pub. L. 97–34, title I, § 124(f),
Pub. L. 95–600, title I, § 121(b),
Section applicable to taxable years beginning after
Pub. L. 101–508, title XI, § 11114,