Sec. 1.152-3 Multiple support agreements.

(1) No one person contributed over half of the individual's support,

(2) Each member of the group which collectively contributed more than half of the support of the individual would have been entitled to claim the individual as a dependent but for the fact that he did not contribute more than one-half of such support.

(3) The member of the group claiming the individual as a dependent contributed more than 10 percent of the individual's support, and

(4) Each other person in the group who contributed more than 10 percent of such support furnishes to the taxpayer claiming the dependent a written declaration that such other person will not claim the individual as a dependent for any taxable year beginning in such calendar year.

Example (1). During the taxable year, brothers A, B, C, and D contributed the entire support of their mother in the following percentages: A, 30 percent; B, 20 percent; C, 29 percent; and D, 21 percent. Any one of the brothers, except for the fact that he did not contribute more than half of her support, would have been entitled to claim his mother as a dependent. Consequently, any one of the brothers could claim a deduction for the exemption of the mother if he obtained a written declaration (as provided in paragraph (a)(4) of this section) from each of the other brothers. Even though A and D together contributed more than one-half the support of the mother, A, if he wished to claim his mother as a dependent, would be required to obtain written declarations from B, C, and D, since each of those three contributed more than 10 percent of the support and, but for the failure to contribute more than half of the mother's support, would have been entitled to claim his mother as a dependent.

Example (2). During the taxable year, E, an individual who resides with his son, S, received his entire support for that year as follows:

B, D, and S are persons each of whom, but for the fact that none contributed more than half of E's support, could claim E as a dependent for the taxable year. The three together contributed 64 percent of E's support, and, thus, each is a member of the group to be considered for the purpose of section 152(c). B and S are the only members of such group who can meet all the requirements of section 152(c), and either one could claim E as a dependent for his taxable year if he obtained a written declaration (as provided in paragraph (a)(4) of this section) signed by the other, and furnished the other information required by the return with respect to all the contributions to E. Inasmuch as D did not contribute more than 10 percent of E's support, she is not entitled to claim E as a dependent for the taxable year nor is she required to furnish a written declaration with respect to her contributions to E. N contributed over 10 percent of the support of E, but, since he is an unrelated neighbor, he does not qualify as a member of the group for the purpose of the multiple support agreement under section 152(c).

(1) The member of a group of contributors who claims an individual as a dependent for a taxable year beginning before January 1, 2002, under the multiple support agreement provisions of section 152(c) must attach to the member's income tax return for the year of the deduction a written declaration from each of the other persons who contributed more than 10 percent of the support of such individual and who, but for the failure to contribute more than half of the support of the individual, would have been entitled to claim the individual as a dependent.

(2) The taxpayer claiming an individual as a dependent for a taxable year beginning after December 31, 2001, under the multiple support agreement provisions of section 152(c) must provide with the income tax return for the year of the deduction --

(3) The taxpayer claiming the individual as a dependent for a taxable year beginning after December 31, 2001, must retain the waiver declarations and should be prepared to furnish the waiver declarations and any other information necessary to substantiate the claim, which may include a statement showing the names of all contributors (whether or not members of the group described in section 152(c)(2)) and the amount contributed by each to the support of the claimed dependent.