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Sec. 4373. Exemptions

The tax imposed by section 4371 shall not apply to—
I.R.C. § 4373(1) Effectively Connected Items
Any amount which is effectively connected with the conduct of a trade or business within the United States unless such amount is exempt from the application of section 882(a) pursuant to a treaty obligation of the United States.
I.R.C. § 4373(2) Indemnity Bond
Any indemnity bond required to be filed by any person to secure payment of any pension, allowance, allotment, relief, or insurance by the United States, or to secure a duplicate for, or the payment of, any bond, note, certificate of indebtedness, war-saving certificate, warrant or check, issued by the United States.
(Aug. 16, 1954, ch. 736, 68A Stat. 522; Sept. 2, 1958, Pub. L. 85-859, title I, 141(a), 72 Stat. 1301; Oct. 4, 1976, Pub. L. 94-455, title XIX, 1904(a)(12), 90 Stat. 1813; Nov. 10, 1988, Pub. L. 100-647, title I, 1012(q)(13)(A), 102 Stat. 3525.)
1988--Par. (1). Pub. L. 100-647 amended par. (1) generally, substituting provisions relating to effectively connected items for provisions relating to domestic agent.
1976--Par. (1). Pub. L. 94-455 substituted “State, or in the District of Columbia, within” for “State, Territory, or District of the United States within”.
1958--Pub. L. 85-859 reenacted section without change.
Section 1012(q)(13)(B) of Pub. L. 100-647 provided that: “The amendment made by subparagraph (A) [amending this section] shall apply with respect to premiums paid after the date 30 days after the date of the enactment of this Act [Nov. 10, 1988].”
Amendment by Pub. L. 94-455 effective on the first day of the first month which begins more than 90 days after Oct. 4, 1976, see section 1904(d) of Pub. L. 94-455, set out as a note under section 4041 of this title.