Effective June 12, 2025, the Postal Service™ is revising the Individual Country Listing for Argentina in Mailing Standards of the United States Postal Service, International Mail Manual (IMM®) to request that the mailer provide the addressee’s unique tax ID number on items mailed to Argentina.
This revision is based on a formal request that Correo Argentina (the designated postal operator of Argentina) made through the Universal Postal Union via International Bureau Circular 74, dated May 5, 2025.
Mailing Standards of the United States Postal Service, International Mail Manual (IMM)
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Individual Country Listings
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Argentina
Country Conditions for Mailing
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Observations
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[Add a new entry to read as follows:]
4. Include the addressee’s unique tax ID number (known as the “clave unica de identification tributaria “CUIT” — format: XX-XXXXXXXXXXXX-X) on the address label and the customs form for items containing goods.
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Although effective June 12, 2025, the Postal Service will incorporate these revisions into the next edition of the online IMM, which is available via Postal Explorer® at pe.usps.com.
— Product Classification,
Product Solutions, 6-12-25
