# Federal Register #2026-21310

USPS Rule Clarifies Payment and Reimbursement of International Mail Customs Charges

**Buyer:** U.S. Postal Service
**Posted:** October 19, 2026
**Identifier:** 2026-21310

The U.S. Postal Service is revising its International Mail Manual to clarify how customs-related charges on international mail are paid and reimbursed.
- **Government buyer:** U.S. Postal Service (USPS); no sub-agency or office is specified.
- **Opportunity type:** Regulatory rule, not a procurement solicitation or contract award.
- **Key requirements:** Mailers are responsible for applicable duties, taxes, import fees, and other charges, including charges assessed after postage is purchased. USPS may invoice mailers for unpaid charges; mailers must pay invoiced amounts even if they dispute the assessment. Disputes with USPS are limited to accounting errors in its invoice.
- **Payment option:** USPS Delivered Duty Paid (DDP) service may be used where available.
- **OEMs, vendors, products, quantities, and part numbers:** None identified.

### Description

The Postal Service is revising sections of the Mailing Standards of the United States Postal Service, International Mail Manual (IMM), to update mailer responsibilities concerning customs requirements. The changes establish procedures for mailers to pay or reimburse customs duties, taxes, import fees, and other charges assessed on mailpieces, including charges assessed after postage is purchased. Mailers may be invoiced when applicable amounts have not been paid in full using USPS Delivered Duty Paid service. The interim final rule is effective October 19, 2026, and comments must be received by November 18, 2026.

[View original listing](https://www.federalregister.gov/documents/2026/10/19/2026-21310/customs-requirements-and-payment-procedures-for-certain-customs-charges)