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Final ruleTook effect Oct. 19, 2026

Customs Requirements and Payment Procedures for Certain Customs Charges

Built by the Tribune's code from the Federal Register. No AI wrote this page. Published in the Federal Register Oct. 19, 2026. Document 2026-21310. Updated Nov. 5, 2026.

What it does

The Postal Service is revising Mailing Standards of the United States Postal Service, International Mail Manual (IMM[supreg]), in various sections, to update mailer responsibilities with respect to customs requirements and to establish procedures for the payment, or reimbursement, of any customs charges that are assessed, including after the purchase of postage.

The Postal Service's summary, as published in the Federal Register.

What changed in the regulation

1 part of Title 39 of the Code of Federal Regulations:

39 CFR 20

Wording on eCFR: the day before it took effect and from the day it took effect (first part listed).

Compared with

The Postal Service has published 15 final rules in 2026 so far, compared with 29 in all of 2025.

Counted by the Tribune from Federal Register records since Jan. 1, 2025.

What happens next and when

Effective: October 19, 2026.

The agency's dates, word for word.

Document number2026-21310
ActionInterim final rule.
AgenciesPostal Service
PublishedOct. 19, 2026
Effective dateOct. 19, 2026
Comments closeNov. 18, 2026

Source: the Federal Register (public domain). The document in the Federal Register