For purposes of this subtitle, the taxable year of any trust shall be the calendar year.
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).
(Added Pub. L. 99–514, title XIV, § 1403(a), Oct. 22, 1986, 100 Stat. 2713, § 645; renumbered § 644, Pub. L. 105–34, title V, § 507(b)(1), Aug. 5, 1997, 111 Stat. 856.)