USC › Title 26 › §64426 U.S.C. § 644Verified against govinfo.gov as of June 20, 2026View official text on govinfo.gov ↗Copy link(a)For purposes of this subtitle, the taxable year of any trust shall be the calendar year.(b)Subsection (a) shall not apply to a trust exempt from taxation under section 501(a) or to a trust described in section 4947(a)(1).