CFDI 4.0 Update: SAT Catalog Changes August 2026

The CFDI 4.0 update published by Mexico’s Tax Administration Service (SAT) on August 21, 2026, introduced changes to some of the catalogs used to generate Digital Tax Receipts via Internet (CFDI) version 4.0.

These changes are mainly related to customs and customs broker license information, so companies that issue CFDIs should ensure they are working with current tax information to avoid inconsistencies when generating invoices.

Keeping tax catalogs updated is particularly important for companies that use business systems integrated with their electronic invoicing processes.

What Did the SAT Update in the CFDI 4.0 Catalogs?

The update published by the SAT includes modifications to the c_NumPedimentoAduana catalog, which is used to identify information related to customs entry numbers.

According to the update, the XSD schemas of the catalogs were not modified. The changes involve the addition of new records to the tax catalogs.

The SAT provides official information and resources related to CFDI 4.0 electronic invoicing, including guides and other materials for taxpayers.

New Records in c_NumPedimentoAduana

The SAT added three new records to the c_NumPedimentoAduana catalog, with an effective date of August 21, 2026:

Customs Office	Customs Broker License	Year	Quantity	Effective Date
07	6176	2026	999999	08-21-2026
16	1923	2026	999999	08-21-2026
16	2022	2026	999999	08-21-2026

These records should be considered when a company’s foreign trade operations require this information for the issuance of tax receipts.

The SAT documentation indicates that customs office and customs broker license information is used when validating the customs entry number included in certain CFDI processes.

CFDI 4.0 Update: What Businesses Need to Review

The CFDI 4.0 update is particularly relevant for companies involved in import and export activities, since customs information can be part of their invoicing processes.

Although the changes involve specific catalog records, businesses should verify that their invoicing systems are using the current information and that their integrations correctly process the applicable customs data.

Companies should review:

The tax catalogs used by their invoicing system.
Customs and customs broker license information.
The configurations used to generate CFDI 4.0.
The integrations responsible for consulting or updating tax information.
Validation processes before issuing tax receipts.

c_PatenteAduanal Catalog Update

In addition to the changes mentioned above, the SAT added one new record to the c_PatenteAduanal catalog.

Customs Broker License	Effective Date
6176	05-28-2025

Although the effective date for this customs broker license corresponds to May 2025, its inclusion in the catalog update should be considered in processes that use foreign trade information.

This information is relevant when systems validate customs entry numbers because the SAT documentation specifies that the applicable patent number must correspond to a valid entry in the customs broker license catalog.

When Did These Changes Take Effect?

The changes published by the SAT became effective on August 21, 2026.

For this reason, companies should verify that their invoicing systems and CFDI-related processes are using the latest versions of the applicable catalogs.

The SAT continues to provide official documentation, guides, and tools for CFDI 4.0 through its electronic invoicing portal.

Official information can be consulted directly through the Mexican Tax Administration Service (SAT).

How Does This Update Impact Businesses?

Although the modification focuses on specific catalog records, keeping tax information up to date is essential to reducing errors when generating CFDIs.

This is particularly relevant for organizations involved in import and export operations that use customs and customs broker license information in their tax receipts.

A business platform that does not have its tax catalogs properly updated could generate inconsistencies when issuing certain tax receipts.

Keeping these catalogs current can help companies:

Reduce errors when generating CFDIs.
Keep tax information current.
Avoid inconsistencies related to foreign trade data.
Facilitate compliance with tax requirements.
Keep invoicing processes aligned with SAT provisions.

What Should Microsoft Dynamics 365 Business Central Users Review?

For companies using Microsoft Dynamics 365 Business Central, these updates provide an opportunity to verify that their electronic invoicing configuration and tax catalogs are properly aligned with the current requirements in Mexico.

The CFDI 4.0 update should be considered as part of a periodic review of Mexican localization processes, particularly when a company handles foreign trade operations.

A properly maintained localization enables companies to adapt their invoicing processes to regulatory changes without relying solely on manual updates or external processes.

Microsoft also provides information about the capabilities and updates available for Microsoft Dynamics 365 Business Central, which can serve as a reference for understanding the platform’s available functionality.

Why Is It Important to Keep Tax Catalogs Updated?

Regulatory changes may seem minor when they involve only a few records in a catalog. However, this data is part of processes that can be critical to generating tax receipts.

Keeping tax catalogs updated helps companies maintain reliable invoicing processes and reduce the risk of inconsistencies caused by outdated information.

For organizations operating in Mexico, periodic reviews of their electronic invoicing configuration can help ensure that their systems remain aligned with applicable tax requirements.

LLB Solutions and the Mexico Localization for Business Central

Companies using Microsoft Dynamics 365 Business Central in Mexico need a localization that considers the country’s applicable tax requirements and can remain aligned with regulatory changes.

At LLB Solutions, we develop localization solutions for Microsoft Dynamics 365 Business Central, enabling companies to adapt their processes to the tax and operational requirements of different countries across Latin America.

If your company uses Business Central in Mexico and you need to evaluate the impact of tax updates, our team can help you review your localization configuration.

Need Help with the Mexico Localization?

Contact LLB Solutions to learn how our Microsoft Dynamics 365 Business Central localization can help you keep your tax processes aligned with Mexico’s current requirements.

info@llbsolutions.com | Mexico Localization