IRS Instructions for Form 1042: the annual return for tax withheld from foreign persons (IRS, Instructions for Form 1042, Purpose of Form; Paper filing)
A US buyer that withholds from a foreign holder reports the tax on Form 1042, due on 15 March of the following year.
Dated 18 Oct 2026Source checked 18 Oct 2026Basis: primary text
In the source's own words
“Use Form 1042 to report the following. The tax withheld under chapter 3 (excluding withholding under sections 1445 and 1446 except as indicated below) on certain income of foreign persons, including nonresident aliens, foreign partnerships, foreign corporations, foreign estates, and foreign trusts. ... Mail Form 1042 by the 15th day of the 3rd month after the end of the calendar year (March 15) to:”
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