26 U.S.C. § 6204. Supplemental assessments

  1. (a)
    (a)

    General rule

    The Secretary may, at any time within the period prescribed for assessment, make a supplemental assessment whenever it is ascertained that any assessment is imperfect or incomplete in any material respect.
  2. (b)
    (b)

    Restrictions on assessment

    For restrictions on assessment of deficiencies in income, estate, gift, and certain excise taxes, see section 6213.
(Aug. 16, 1954, ch. 736, 68A Stat. 768; Pub. L. 93–406, title II, § 1016(a)(27), Sept. 2, 1974, 88 Stat. 932; Pub. L. 94–455, title XIX, § 1906(b)(13)(A), Oct. 4, 1976, 90 Stat. 1834.)