CBP Modifies Post Summary Correction Processing: What Filers Must Know

CBP announces changes to Post Summary Correction processing

U.S. Customs and Border Protection (CBP) issued CSMS #69428352 on August 3, 2026, announcing modifications to how Post Summary Corrections (PSCs) are processed. The changes stem from a Federal Register Notice published July 6, 2026 (91 FR 41053), titled "Modification and Clarification of the National Customs Automation Program Test Regarding Post Summary Corrections."

Key change: electronic payment is now required

The most operationally significant modification is a new electronic payment requirement. When a PSC results in an increase in duties, taxes, or fees, the filer must remit that payment electronically through the Automated Clearing House (ACH) system. Filers who currently use paper-based or manual payment methods for PSC-driven increases will need to update their payment workflows to stay compliant.

Why this matters for importers and brokers

PSCs are a routine tool for correcting entry summaries after they have been filed, and they are commonly used to adjust classification, value, quantity, or duty amounts. Any procedural change to PSC processing has broad operational impact across the trade community. Failing to meet the new electronic payment requirement could result in processing delays, penalties, or interest charges on underpaid duties.

What importers and brokers should do

• Review CSMS #69428352 and Federal Register Notice 91 FR 41053 in full to understand the complete scope of the modifications.
• Confirm that your ACH debit or ACH credit account is active and properly configured in ACE before submitting any PSC that results in a duty increase.
• Audit current PSC workflows to identify any steps that rely on non-electronic payment methods and update those processes accordingly.
• Brief internal trade-compliance teams and external customs brokers on the new requirements to ensure consistent handling across all entry summaries.