§ 152 Dependent defined

OLRC 119-134 · eCFR 2026-10-19 · 4 regs · 13 amending Acts · cited by 39 sections

Enacted 1954 · Act Aug. 16, 1954, ch. 736 Amended · 13 Acts · From 1939 Code § 25(b)(3)

Connections Cited by 39 · Cites 10
+27 more
§ 152 Dependent defined

(a) In general For purposes of this subtitle, the term “dependent” means—

Textual readingANY OF= a dependentGate Wizard 🧙

(1) a qualifying child, or needs § 152(c)(1)

Textual readingALL OF= Dependent under (a)(1)Gate Wizard 🧙
“a qualifying child, or” needs § 152(c)(1)
Cited by 10

    (2) a qualifying relative.

    Cited by 1
      Amended 1958, 1967, 1976, 1986
      • 1986 Pub. L. 99-514 Pub. L. 99–514, § 1301(j)(8), substituted “section 7703” for “section 143”.
      • 1976 Pub. L. 94-455 Pub. L. 94–455, § 1901(b)(7)(B), substituted “section 143” for “section 153”.
      • 1976 Pub. L. 94-455 Pub. L. 94–455, § 1901(a)(24)(A), struck out par. (10) relating to descendents of a taxpayer, who were members of taxpayer’s household, before receiving institutional care.
      • 1967 Pub. L. 90-78 Pub. L. 90–78, § 1(b), inserted “or (e)” after “subsection (c)”.
      • 1958 Pub. L. 85-866 Pub. L. 85–866, § 4(a), inserted “(other than an individual who at any time during the taxable year was the spouse, determined without regard to section 153, of the taxpayer)”.
      Cited by 21

        (b) Exceptions For purposes of this section—

        Amended 1958
        Cited by 1

          (1) Dependents ineligible If an individual is a dependent of a taxpayer for any taxable year of such taxpayer beginning in a calendar year, such individual shall be treated as having no dependents for any taxable year of such individual beginning in such calendar year.

          Cited by 17

            (2) Married dependents An individual shall not be treated as a dependent of a taxpayer under subsection (a) if such individual has made a joint return with the individual’s spouse under section 6013 for the taxable year beginning in the calendar year in which the taxable year of the taxpayer begins.

            Amended 1959, 1969
            • 1969 Pub. L. 91-172 Pub. L. 91–172 inserted reference to foster children who satisfy requirements of subsec. (a)(9) of this section.
            • 1959 Pub. L. 86-376 Pub. L. 86–376 provided that a child who is a member of an individual’s household if placed with such individual by an authorized placement agency for legal adoption by such individual shall be treated as a child by blood.
            Cited by 14

              (3) Citizens or nationals of other countries

              Amended 1955, 1958, 1972, 1976
              • 1976 Pub. L. 94-455 Pub. L. 94–455, § 1901(a)(24)(B), among other changes struck out “of the Canal Zone, or of the Republic of Panama” after “country contiguous to the United States,” and provisions relating to children born or adopted in Philippines.
              • 1972 Pub. L. 92-580 Pub. L. 92–580 substituted “citizen or national of the United States” for “citizen of the United States” in two places.
              • 1958 Pub. L. 85-866 Pub. L. 85–866, § 4(b), among other changes, struck out provision that “dependent” does not include any individual who is not a United States citizen unless such individual is a resident of United States or of a contiguous country, or of Canal Zone or Panama, and inserted provision barring exclusion from definition of “dependent” any child of taxpayer, legally adopted by him, if, for taxable year of taxpayer, child’s principal place of abode is taxpayer’s home and child is member of taxpayer’s household, if taxpayer is United States citizen.
              • 1955 Act Aug. 9, 1955, substituted “January 1, 1956” for “July 5, 1946”.
              Cited by 6

                (A) In general The term “dependent” does not include an individual who is not a citizen or national of the United States unless such individual is a resident of the United States or a country contiguous to the United States.

                Cited by 3

                  (B) Exception for adopted child Subparagraph (A) shall not exclude any child of a taxpayer (within the meaning of subsection (f)(1)(B)) from the definition of “dependent” if—

                  Cited by 4

                    (i) for the taxable year of the taxpayer, the child has the same principal place of abode as the taxpayer and is a member of the taxpayer’s household, and

                    (ii) the taxpayer is a citizen or national of the United States.

                    (c) Qualifying child For purposes of this section—

                    Textual readingALL OF= meets paragraph (1) qualifying child test
                    “who bears a relationship to the taxpayer described in paragraph (2)”
                    “who has the same principal place of abode as the taxpayer for more than one-half of such taxable year”
                    “who meets the age requirements of paragraph (3)”
                    “who has not provided over one-half of such individual’s own support for the calendar year in which the taxable year of the taxpayer begins”
                    “who has not filed a joint return (other than only for a claim of refund) with the individual’s spouse under section 6013 for the taxable year beginning in the calendar year in which the taxable year of the taxpayer begins”

                    (1) In general The term “qualifying child” means, with respect to any taxpayer for any taxable year, an individual—

                    Textual readingALL OF= qualifying child

                    (A) who bears a relationship to the taxpayer described in paragraph (2),

                    Cited by 1

                      (B) who has the same principal place of abode as the taxpayer for more than one-half of such taxable year,

                      Cited by 4

                        (C) who meets the age requirements of paragraph (3),

                        Cited by 1

                          (D) who has not provided over one-half of such individual’s own support for the calendar year in which the taxable year of the taxpayer begins, and

                          Cited by 3

                            (E) who has not filed a joint return (other than only for a claim of refund) with the individual’s spouse under section 6013 for the taxable year beginning in the calendar year in which the taxable year of the taxpayer begins.

                            Amended 2008

                            (2) Relationship For purposes of paragraph (1)(A), an individual bears a relationship to the taxpayer described in this paragraph if such individual is—

                            Cited by 3

                              (A) a child of the taxpayer or a descendant of such a child, or

                              (B) a brother, sister, stepbrother, or stepsister of the taxpayer or a descendant of any such relative.

                              (3) Age requirements

                              Cited by 2

                                (A) In general For purposes of paragraph (1)(C), an individual meets the requirements of this paragraph if such individual is younger than the taxpayer claiming such individual as a qualifying child and—

                                Amended 2008
                                • 2008 Pub. L. 110-351 Pub. L. 110–351, § 501(a), inserted “is younger than the taxpayer claiming such individual as a qualifying child and” after “such individual” in introductory provisions.
                                Cited by 1

                                  (i) has not attained the age of 19 as of the close of the calendar year in which the taxable year of the taxpayer begins, or

                                  (ii) is a student who has not attained the age of 24 as of the close of such calendar year.

                                  (B) Special rule for disabled In the case of an individual who is permanently and totally disabled (as defined in section 22(e)(3)) at any time during such calendar year, the requirements of subparagraph (A) shall be treated as met with respect to such individual.

                                  Cited by 1

                                    (4) Special rule relating to 2 or more who can claim the same qualifying child

                                    Amended 1976, 2008
                                    • 2008 Pub. L. 110-351 Pub. L. 110–351, § 501(c)(2)(B)(ii), substituted “who can claim the same” for “claiming” in heading.
                                    • 1976 Pub. L. 94-455 Pub. L. 94–455, § 1906(b)(13)(A), struck out “or his delegate” after “Secretary”.
                                    Cited by 1

                                      (A) In general Except as provided in subparagraphs (B) and (C), if (but for this paragraph) an individual may be claimed as a qualifying child by 2 or more taxpayers for a taxable year beginning in the same calendar year, such individual shall be treated as the qualifying child of the taxpayer who is—

                                      Amended 2008
                                      • 2008 Pub. L. 110-351 Pub. L. 110–351, § 501(c)(2)(B)(i), substituted “Except as provided in subparagraphs (B) and (C), if (but for this paragraph) an individual may be claimed as a qualifying child by 2 or more taxpayers” for “Except as provided in subparagraph (B), if (but for this paragraph) an individual may be and is claimed as a qualifying child by 2 or more taxpayers” in introductory provisions.

                                      (i) a parent of the individual, or

                                      Cited by 1

                                        (ii) if clause (i) does not apply, the taxpayer with the highest adjusted gross income for such taxable year.

                                        (B) More than 1 parent claiming qualifying child If the parents claiming any qualifying child do not file a joint return together, such child shall be treated as the qualifying child of—

                                        Cited by 1

                                          (i) the parent with whom the child resided for the longest period of time during the taxable year, or

                                          (ii) if the child resides with both parents for the same amount of time during such taxable year, the parent with the highest adjusted gross income.

                                          (C) No parent claiming qualifying child If the parents of an individual may claim such individual as a qualifying child but no parent so claims the individual, such individual may be claimed as the qualifying child of another taxpayer but only if the adjusted gross income of such taxpayer is higher than the highest adjusted gross income of any parent of the individual.

                                          Amended 2008
                                          • 2008 Pub. L. 110-351 Pub. L. 110–351, § 501(c)(2)(A), added subpar. (C).
                                          Cited by 1
                                            Cited by 12

                                              (d) Qualifying relative For purposes of this section—

                                              Amended 1976
                                              • 1976 Pub. L. 94-455 Pub. L. 94–455, § 1901(b)(8)(A), substituted “organization described in section 170(b)(1)(A)(ii)” for “institution (as defined in section 151(e)(4))”.
                                              Cited by 4

                                                (1) In general The term “qualifying relative” means, with respect to any taxpayer for any taxable year, an individual—

                                                Textual readingALL OF= qualifying relative

                                                (A) who bears a relationship to the taxpayer described in paragraph (2),

                                                Cited by 1

                                                  (B) whose gross income for the calendar year in which such taxable year begins is less than the exemption amount (as defined in section 151(d)),

                                                  Cited by 15

                                                    (C) with respect to whom the taxpayer provides over one-half of the individual’s support for the calendar year in which such taxable year begins, and

                                                    Cited by 3

                                                      (D) who is not a qualifying child of such taxpayer or of any other taxpayer for any taxable year beginning in the calendar year in which such taxable year begins.

                                                      (2) Relationship For purposes of paragraph (1)(A), an individual bears a relationship to the taxpayer described in this paragraph if the individual is any of the following with respect to the taxpayer:

                                                      Amended 1986
                                                      • 1986 Pub. L. 99-514 Pub. L. 99–514, § 104(b)(3), substituted “section 151(c)(4)” for “section 151(e)(4)”.
                                                      Cited by 10

                                                        (A) A child or a descendant of a child.

                                                        Cited by 9

                                                          (B) A brother, sister, stepbrother, or stepsister.

                                                          Cited by 2

                                                            (C) The father or mother, or an ancestor of either.

                                                            (D) A stepfather or stepmother.

                                                            (E) A son or daughter of a brother or sister of the taxpayer.

                                                            (F) A brother or sister of the father or mother of the taxpayer.

                                                            (G) A son-in-law, daughter-in-law, father-in-law, mother-in-law, brother-in-law, or sister-in-law.

                                                            Cited by 8

                                                              (H) An individual (other than an individual who at any time during the taxable year was the spouse, determined without regard to section 7703, of the taxpayer) who, for the taxable year of the taxpayer, has the same principal place of abode as the taxpayer and is a member of the taxpayer’s household.

                                                              Cited by 4

                                                                (3) Special rule relating to multiple support agreements For purposes of paragraph (1)(C), over one-half of the support of an individual for a calendar year shall be treated as received from the taxpayer if—

                                                                Cited by 3

                                                                  (A) no one person contributed over one-half of such support,

                                                                  (B) over one-half of such support was received from 2 or more persons each of whom, but for the fact that any such person alone did not contribute over one-half of such support, would have been entitled to claim such individual as a dependent for a taxable year beginning in such calendar year,

                                                                  Cited by 1

                                                                    (C) the taxpayer contributed over 10 percent of such support, and

                                                                    (D) each person described in subparagraph (B) (other than the taxpayer) who contributed over 10 percent of such support files a written declaration (in such manner and form as the Secretary may by regulations prescribe) that such person will not claim such individual as a dependent for any taxable year beginning in such calendar year.

                                                                    (4) Special rule relating to income of handicapped dependents

                                                                    (A) In general For purposes of paragraph (1)(B), the gross income of an individual who is permanently and totally disabled (as defined in section 22(e)(3)) at any time during the taxable year shall not include income attributable to services performed by the individual at a sheltered workshop if—

                                                                    Cited by 1

                                                                      (i) the availability of medical care at such workshop is the principal reason for the individual’s presence there, and

                                                                      (ii) the income arises solely from activities at such workshop which are incident to such medical care.

                                                                      (B) Sheltered workshop defined For purposes of subparagraph (A), the term “sheltered workshop” means a school—

                                                                      “a school—” Opening words
                                                                      Textual readingALL OF= a sheltered workshop

                                                                      (i) which provides special instruction or training designed to alleviate the disability of the individual, and

                                                                      (ii) which is operated by an organization described in section 501(c)(3) and exempt from tax under section 501(a), or by a State, a possession of the United States, any political subdivision of any of the foregoing, the United States, or the District of Columbia.

                                                                      (5) Special rules for support

                                                                      Amended 2017
                                                                      • 2017 Pub. L. 115-97 Pub. L. 115–97 amended par. (5) generally. Prior to amendment, text read as follows: “For purposes of this subsection—

                                                                        “(A) payments to a spouse which are includible in the gross income of such spouse under section 71 or 682 shall not be treated as a payment by the payor spouse for the support of any dependent, and

                                                                        “(B) in the case of the remarriage of a parent, support of a child received from the parent’s spouse shall be treated as received from the parent.”

                                                                      (A) In general For purposes of this subsection—

                                                                      Cited by 1

                                                                        (i) payments to a spouse of alimony or separate maintenance payments shall not be treated as a payment by the payor spouse for the support of any dependent, and

                                                                        (ii) in the case of the remarriage of a parent, support of a child received from the parent’s spouse shall be treated as received from the parent.

                                                                        (B) Alimony or separate maintenance payment For purposes of subparagraph (A), the term “alimony or separate maintenance payment” means any payment in cash if—

                                                                        “any payment in cash” Opening words
                                                                        Textual readingALL OF= an alimony or separate maintenance payment

                                                                        (i) such payment is received by (or on behalf of) a spouse under a divorce or separation instrument (as defined in section 121(d)(3)(C)),

                                                                        (ii) in the case of an individual legally separated from the individual’s spouse under a decree of divorce or of separate maintenance, the payee spouse and the payor spouse are not members of the same household at the time such payment is made, and

                                                                        (iii) there is no liability to make any such payment for any period after the death of the payee spouse and there is no liability to make any payment (in cash or property) as a substitute for such payments after the death of the payee spouse.

                                                                        (e) Special rule for divorced parents, etc.

                                                                        Amended 1967, 1984, 2005
                                                                        • 2005 Pub. L. 109-135 Pub. L. 109–135 amended heading and text of subsec. (e) generally. Prior to amendment, text consisted of pars. (1) to (4) relating to special rule for divorced parents, requirements for divorced parents, definitions of custodial and noncustodial parent, and exception for multiple-support agreements.
                                                                        • 1984 Pub. L. 98-369 Pub. L. 98–369, § 423(a), amended subsec. (e) generally, and in substantially revising support test provisions, enacted par. (1) custodial parent exemption, former par. (1) declaring the general rule that where a child received over one-half of his calendar year support from parents who were divorced or legally separated under a decree of divorce or separate maintenance, or were separated under a written separation agreement and the child was in the custody of one or both parents for more than one-half of the calendar year, the child would be treated as receiving over half of his support from the parent having custody for a greater portion of the calendar year unless treated under special rule provision as having received over half of his support from the parent not having custody; enacted par. (2) release of custodial parent exemption for the year, former par. (2) declaring the special rule that parent without custody would be deemed as furnishing over half of the support where the decree of divorce or separate maintenance, or written agreement, covering the taxable year, provided that parent without custody should be entitled to the section 151 deduction for the child and such parent provided at least $600 calendar year support, or alternatively, such parent without custody provided $1,200 or more calendar year support and the parent with custody did not establish more support of the child than the parent without custody; redesignated as par. (3) former par. (4) provision respecting exception for multiple-support agreement, deleting former par. (3) respecting requirement of an itemized statement of expenditures to resolve more support claims; added par. (4) respecting exception for certain pre-1985 instruments; added par. (5) enunciating special rule for support received from new spouse of parent, deleting former par. (5) regulations prescription provision; and added par. (6) cross reference provision.
                                                                        • 1967 Pub. L. 90-78 Pub. L. 90–78, § 1(a), added subsec. (e).
                                                                        Cited by 16

                                                                          (1) In general Notwithstanding subsection (c)(1)(B), (c)(4), or (d)(1)(C), if—

                                                                          Cited by 3

                                                                            (A) a child receives over one-half of the child’s support during the calendar year from the child’s parents—

                                                                            Amended 1986
                                                                            • 1986 Pub. L. 99-514 Pub. L. 99–514, § 104(b)(1)(B), substituted “section 151(c)(3)” for “section 151(e)(3)”.

                                                                            (i) who are divorced or legally separated under a decree of divorce or separate maintenance,

                                                                            (ii) who are separated under a written separation agreement, or

                                                                            (iii) who live apart at all times during the last 6 months of the calendar year, and—

                                                                            (B) such child is in the custody of 1 or both of the child’s parents for more than one-half of the calendar year, such child shall be treated as being the qualifying child or qualifying relative of the noncustodial parent for a calendar year if the requirements described in paragraph (2) or (3) are met.

                                                                            (2) Exception where custodial parent releases claim to exemption for the year For purposes of paragraph (1), the requirements described in this paragraph are met with respect to any calendar year if—

                                                                            (A) the custodial parent signs a written declaration (in such manner and form as the Secretary may by regulations prescribe) that such custodial parent will not claim such child as a dependent for any taxable year beginning in such calendar year, and

                                                                            (B) the noncustodial parent attaches such written declaration to the noncustodial parent’s return for the taxable year beginning during such calendar year.

                                                                            Amended 1976
                                                                            • 1976 Pub. L. 94-455 Pub. L. 94–455, § 2139(a), substituted “each” for “all”.

                                                                            (3) Exception for certain pre-1985 instruments

                                                                            Amended 1976
                                                                            • 1976 Pub. L. 94-455 Pub. L. 94–455, § 1906(b)(13)(A), struck out “or his delegate” after “Secretary”.
                                                                            Cited by 1

                                                                              (A) In general For purposes of paragraph (1), the requirements described in this paragraph are met with respect to any calendar year if—

                                                                              (i) a qualified pre-1985 instrument between the parents applicable to the taxable year beginning in such calendar year provides that the noncustodial parent shall be entitled to any deduction allowable under section 151 for such child, and

                                                                              Textual readingALL OF= Clause (i) requirement met
                                                                              “a qualified pre-1985 instrument between the parents applicable to the taxable year beginning in such calendar year provides that the noncustodial parent shall be entitled to any deduction allowable under section 151 for such child”
                                                                              Cited by 1

                                                                                (ii) the noncustodial parent provides at least $600 for the support of such child during such calendar year.

                                                                                For purposes of this subparagraph, amounts expended for the support of a child or children shall be treated as received from the noncustodial parent to the extent that such parent provided amounts for such support.

                                                                                (B) Qualified pre-1985 instrument For purposes of this paragraph, the term “qualified pre-1985 instrument” means any decree of divorce or separate maintenance or written agreement—

                                                                                “any decree of divorce or separate maintenance or written agreement” Opening words
                                                                                Textual readingALL OF= a qualified pre-1985 instrument

                                                                                (i) which is executed before January 1, 1985,

                                                                                (ii) which on such date contains the provision described in subparagraph (A)(i), and

                                                                                (iii) which is not modified on or after such date in a modification which expressly provides that this paragraph shall not apply to such decree or agreement.

                                                                                Cited by 1

                                                                                  (4) Custodial parent and noncustodial parent For purposes of this subsection—

                                                                                  (A) Custodial parent The term “custodial parent” means the parent having custody for the greater portion of the calendar year.

                                                                                  Cited by 3

                                                                                    (B) Noncustodial parent The term “noncustodial parent” means the parent who is not the custodial parent.

                                                                                    (5) Exception for multiple-support agreement This subsection shall not apply in any case where over one-half of the support of the child is treated as having been received from a taxpayer under the provision of subsection (d)(3).

                                                                                    Amended 1976
                                                                                    • 1976 Pub. L. 94-455 Pub. L. 94–455, § 1906(b)(13)(A), struck out “or his delegate” after “Secretary”.

                                                                                    (6) Special rule for support received from new spouse of parent For purposes of this subsection, in the case of the remarriage of a parent, support of a child received from the parent’s spouse shall be treated as received from the parent.

                                                                                    Amended 1984
                                                                                    • 1984 Pub. L. 98-369 Pub. L. 98–369, § 482(b)(2), substituted “section 213(d)(5)” for “section 213(d)(4)”.

                                                                                    (f) Other definitions and rules For purposes of this section—

                                                                                    (1) Child defined

                                                                                    Textual readingANY OF= Individual is a child
                                                                                    “a son, daughter, stepson, or stepdaughter of the taxpayer”
                                                                                    “an eligible foster child of the taxpayer”

                                                                                    (A) In general The term “child” means an individual who is—

                                                                                    “an individual who is—” Opening words
                                                                                    Textual readingANY OF= a child

                                                                                    (i) a son, daughter, stepson, or stepdaughter of the taxpayer, or

                                                                                    Cited by 1

                                                                                      (ii) an eligible foster child of the taxpayer.

                                                                                      Cited by 1

                                                                                        (B) Adopted child In determining whether any of the relationships specified in subparagraph (A)(i) or paragraph (4) exists, a legally adopted individual of the taxpayer, or an individual who is lawfully placed with the taxpayer for legal adoption by the taxpayer, shall be treated as a child of such individual by blood.

                                                                                        Cited by 3

                                                                                          (C) Eligible foster child For purposes of subparagraph (A)(ii), the term “eligible foster child” means an individual who is placed with the taxpayer by an authorized placement agency or by judgment, decree, or other order of any court of competent jurisdiction.

                                                                                          Cited by 3
                                                                                            Cited by 18

                                                                                              (2) Student defined The term “student” means an individual who during each of 5 calendar months during the calendar year in which the taxable year of the taxpayer begins—

                                                                                              Cited by 5

                                                                                                (A) is a full-time student at an educational organization described in section 170(b)(1)(A)(ii), or

                                                                                                (B) is pursuing a full-time course of institutional on-farm training under the supervision of an accredited agent of an educational organization described in section 170(b)(1)(A)(ii) or of a State or political subdivision of a State.

                                                                                                (3) Determination of household status An individual shall not be treated as a member of the taxpayer’s household if at any time during the taxable year of the taxpayer the relationship between such individual and the taxpayer is in violation of local law.

                                                                                                (4) Brother and sister The terms “brother” and “sister” include a brother or sister by the half blood.

                                                                                                Cited by 1

                                                                                                  (5) Special support test in case of students For purposes of subsections (c)(1)(D) and (d)(1)(C), in the case of an individual who is—

                                                                                                  Cited by 1

                                                                                                    (A) a child of the taxpayer, and

                                                                                                    Cited by 1

                                                                                                      amounts received as scholarships for study at an educational organization described in section 170(b)(1)(A)(ii) shall not be taken into account.

                                                                                                      (6) Treatment of missing children

                                                                                                      (A) In general Solely for the purposes referred to in subparagraph (B), a child of the taxpayer—

                                                                                                      Cited by 2

                                                                                                        (i) who is presumed by law enforcement authorities to have been kidnapped by someone who is not a member of the family of such child or the taxpayer, and

                                                                                                        (ii) who had, for the taxable year in which the kidnapping occurred, the same principal place of abode as the taxpayer for more than one-half of the portion of such year before the date of the kidnapping,

                                                                                                        shall be treated as meeting the requirement of subsection (c)(1)(B) with respect to a taxpayer for all taxable years ending during the period that the child is kidnapped.

                                                                                                        (B) Purposes Subparagraph (A) shall apply solely for purposes of determining—

                                                                                                        Cited by 1

                                                                                                          (i) the deduction under section 151(c),

                                                                                                          (ii) the credit under section 24 (relating to child tax credit),

                                                                                                          (iii) whether an individual is a surviving spouse or a head of a household (as such terms are defined in section 2), and

                                                                                                          (iv) the earned income credit under section 32.

                                                                                                          (C) Comparable treatment of certain qualifying relatives For purposes of this section, a child of the taxpayer—

                                                                                                          Cited by 1

                                                                                                            (i) who is presumed by law enforcement authorities to have been kidnapped by someone who is not a member of the family of such child or the taxpayer, and

                                                                                                            (ii) who was (without regard to this paragraph) a qualifying relative of the taxpayer for the portion of the taxable year before the date of the kidnapping,

                                                                                                            shall be treated as a qualifying relative of the taxpayer for all taxable years ending during the period that the child is kidnapped.

                                                                                                            (D) Termination of treatment Subparagraphs (A) and (C) shall cease to apply as of the first taxable year of the taxpayer beginning after the calendar year in which there is a determination that the child is dead (or, if earlier, in which the child would have attained age 18).

                                                                                                            (7) Cross references For provision treating child as dependent of both parents for purposes of certain provisions, see sections 105(b), 132(h)(2)(B), and 213(d)(5).