SAT Updates CFDI 4.0 Catalogs: Changes Effective as of May 2026

SAT CFDI Catalogs 2026: Main Changes

Mexico’s Tax Administration Service (SAT) announced a new update to the CFDI version 4.0 catalogs, effective as of May 08, 2026.

These modifications specifically impact catalogs related to customs operations and foreign trade, which are key elements for companies managing electronic invoicing and tax compliance processes in Mexico.

Official SAT information: https://www.sat.gob.mx/

What changes did the SAT make to the CFDI 4.0 catalogs?

In this update, the SAT incorporated new records into the c_NumPedimentoAduana catalog, used to validate information related to customs declarations within CFDI documents.

It is important to highlight that:

• No changes were made to the XSD schemas.
• The update only includes new records added to the catalogs.

New records added to the c_NumPedimentoAduana catalog

The SAT added 14 new records to the c_NumPedimentoAduana catalog effective May 08, 2026.

c_Aduana	Patent	Fiscal Year	Quantity	Effective Date
16	3366	2026	999999	08-05-2026
17	1939	2026	999999	08-05-2026
17	3716	2026	999999	08-05-2026
20	1927	2026	999999	08-05-2026
24	1691	2026	999999	08-05-2026
24	1945	2026	999999	08-05-2026
40	1912	2026	999999	08-05-2026
47	1942	2026	999999	08-05-2026
51	1778	2026	999999	08-05-2026
51	1879	2026	999999	08-05-2026
51	3364	2026	999999	08-05-2026
64	1940	2026	999999	08-05-2026
85	1648	2026	999999	08-05-2026
85	3551	2026	999999	08-05-2026

Update to the c_PatenteAduanal catalog

Additionally, one new record was added to the c_PatenteAduanal catalog:

c_PatenteAduanal	Effective Date
1940	22-09-2025

When do these changes take effect?

The changes published by the SAT become effective as of May 08, 2026.

Therefore, it is important for companies and electronic invoicing solutions to keep their CFDI catalogs updated in order to avoid tax validation errors and ensure regulatory compliance.

Keep your operations aligned with SAT requirements

At LLB Solutions, we help companies stay up to date with tax changes in Mexico through solutions and localizations for Microsoft Dynamics 365 Business Central.

Our team continuously monitors SAT updates to ensure electronic invoicing and tax compliance processes operate correctly and according to current regulations.

Is your company prepared for SAT tax changes?

At LLB Solutions, we help businesses align their processes with CFDI 4.0 updates and tax requirements in Mexico through integrated solutions for Microsoft Dynamics 365 Business Central.

Contact us and discover how to optimize your tax compliance and automate your operations.

info@llbsolutions.com | Mexico Localization