38 C.F.R. § 1.575
(c) A person requested by VA to disclose a social security number shall be told, as prescribed by § 1.578(c), whether disclosure is voluntary or mandatory. The person shall also be told that VA is requesting the social security number under the authority of title 38 U.S.C., or in the case of existing direct or vendee loan borrowers, under the authority of 26 U.S.C. 6109(a) in conjunction with sections 145 and 148 of Pub. L. 98-369, or in the case of loan applicants, under the authority of section 4 of Pub. L. 97-365. The person shall also be told that it will be used in the administration of veterans' benefits in the identification of veterans or persons claiming or receiving VA benefits and their records, that it may be used in making reports to the Internal Revenue Service where required by law, and to determine whether a loan guaranty applicant has been identified as a delinquent taxpayer by the Internal Revenue Service, and that such taxpayers may have their loan applications rejected, and that it may be used to verify social security benefit entitlement (including amounts payable) with the Social Security Administration and, for other purposes where authorized by both title 38 U.S.C., and the Privacy Act of 1974, (Pub. L. 93-579), or, where required by another statute. (Pub. L. 97-365, sec. 4)
(Authority: 38 U.S.C. 5101)
[44 FR 22068, Apr. 13, 1979, as amended at 51 FR 21750, June 16, 1986; 56 FR 25044, June 3, 1991]