26 CFR § 301.7701-11

26 CFR · Internal Revenue

§ 301.7701-11 — Social security number.

TitleTitle 26: Internal Revenue PartPart 301: Procedure and Administration

SourceeCFR (current through May 4, 2026)

This text of 26 C.F.R. § 301.7701-11 (Social security number.) is published on Counsel Stack Legal Research, covering United States primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook

26 C.F.R. § 301.7701-11 (2026).

Text

§ 301.7701-11 Social security number.
For purposes of this chapter, the term social security number means the taxpayer identifying number of an individual or estate which is assigned pursuant to section 6011(b) or corresponding provisions of prior law, or pursuant to section 6109, and in which nine digits are separated by hyphens as follows: 000-00-0000. Such term does not include a number with a letter as a suffix which is used to identify an auxiliary beneficiary under the social security program. The terms “account number” and “social security number” refer to the same number.

[T.D. 7306, 39 FR 9947, Mar. 15, 1974]

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§ 301.7701-11 Social security number.

For purposes of this chapter, the term social security number means the taxpayer identifying number of an individual or estate which is assigned pursuant to section 6011(b) or corresponding provisions of prior law, or pursuant to section 6109, and in which nine digits are separated by hyphens as follows: 000-00-0000. Such term does not include a number with a letter as a suffix which is used to identify an auxiliary beneficiary under the social security program. The terms “account number” and “social security number” refer to the same number.

[T.D. 7306, 39 FR 9947, Mar. 15, 1974]