Accountant Puebla Volkswagen automotive suppliers ISN 2026 transfer pricing

Puebla is Mexico's most important automotive state. The Volkswagen plant in Cuautlancingo produces the Jetta, Taos, and Tiguan for the North American and export market; alongside it, more than 400 Tier-1 and Tier-2 suppliers operate in the Finsa, Finsa II, San Jerónimo, and Vía Atlixcáyotl industrial parks. The ecosystem has its own tax rules that no generalist accountant knows thoroughly: the state payroll tax with the SFA, transfer pricing for foreign subsidiaries, REPSE for subcontracted manufacturing, and the intersection between Volkswagen's VDA 6.3 audit requirements and SAT reviews.

Puebla payroll tax: 2% with SFA — not to be confused with federal payroll

The most common mistake by foreign companies opening a plant in Puebla is confusing the state payroll tax with federal payroll obligations. These are completely separate obligations:

ObligationAuthorityPortalRate/amount
ISR payroll (withholding)Federal SATsat.gob.mxSchedule Art.96 LISR
IMSS contributionsFederal IMSSimss.gob.mx~22% integrated salary
INFONAVITFederal INFONAVITinfonavit.org.mx5% integrated salary
Puebla payroll tax (ISN)SFA Pueblafinanzaspuebla.gob.mx2% gross payroll

The state payroll tax does not appear in federal SAT systems — its registration, filing, and payment are 100% with the Puebla SFA. Many subsidiaries of German, Japanese, or American companies discover Puebla's payroll tax two or three years after starting operations, when a state auditor reviews the payroll and applies surcharges and penalties under Article 59 of the Puebla State Tax Code.

Transfer pricing: the specific risk for foreign subsidiaries in Puebla

Most Tier-1 and some Tier-2 suppliers in Puebla are subsidiaries or joint ventures of German (Continental, Bosch, ZF, Hella), Japanese (DENSO, Aisin, Toyota Industries), or American (BorgWarner, Aptiv, Dana) groups. These structures generate intercompany transactions that SAT reviews under the Transfer Pricing Chapter of Title VI of the LISR.

Typical intercompany transactions at Puebla automotive suppliers:
  • Component sales to parent or other group subsidiaries: transfer price of the component produced in Mexico
  • Raw material purchases from the group: price at which the group exports steel, aluminum, polymers to the Mexican subsidiary
  • Technology royalties: percentage of sales paid to the parent for use of patents or know-how
  • Management fees: charges from the parent for engineering, IT, finance services
  • Intercompany loans: interest rate on loans from the parent to the Mexican subsidiary

Each of these transactions must be supported by a Transfer Pricing Study demonstrating that the prices or rates applied are comparable to market rates between independent parties. The study must be submitted as part of Annex 9 of SAT's informative declaration, and kept as supporting documentation for at least 5 years.

REPSE in Puebla's automotive supply chain

Since the 2021 outsourcing reform, REPSE is mandatory for every company that provides specialized services. In Puebla's automotive ecosystem, this covers a broad spectrum of suppliers.

Company typeREPSE required?Reason
CNC parts machining companyYesSpecialized manufacturing for third parties
In-house assembly inside plantYesSpecialized service at client's facilities
NVH / EMC testing laboratoryYesSpecialized technical service
Parts sequencing warehouse (inside plant)YesLogistics service at client's facilities
Specialized production line maintenanceYesRecurring specialized service
Finished product supplier (standard Tier-1)No (if selling product only)Manufacturing of goods, not specialized service

The VDA 6.3 and SAT connection: why the quality audit matters fiscally

The VDA 6.3 standard that Volkswagen applies to its Puebla suppliers evaluates, among other criteria, supplier management (P2), product and process planning (P3/P4), process implementation (P5/P6), and customer service (P7). Three points of this standard have a direct intersection with SAT reviews: cost structure (VDA P4-P5 matches SAT transfer pricing documentation requirements), approved supplier list (which SAT can compare with stamped CFDI to flag potential ghost companies), and change management (each VDA process change involving a new specialized subcontractor requires REPSE verification to avoid joint liability).

Nexoconsult services for automotive suppliers in Puebla:
  • Monthly payroll tax registration and filing with the Puebla SFA
  • Annual Transfer Pricing Study preparation (SAT Annex 9)
  • REPSE consulting: registration, renewal, and subcontractor monitoring
  • Cost structure consistency review between VDA and SAT transfer pricing
  • Accounting for newly established foreign companies in Puebla (startup phase)

Automotive supplier tax calendar in Puebla

ObligationDeadlineFiled with
Monthly Puebla payroll tax17th of the following monthSFA Puebla / finanzaspuebla.gob.mx
Monthly VAT17th of the following monthFederal SAT
Monthly ISR (provisional payment)17th of the following monthFederal SAT
Monthly IMSS / INFONAVIT17th of the following monthIMSS / INFONAVIT
Annual ISR declarationMarch 31 (legal entities)Federal SAT
Transfer Pricing Study (Annex 9)December 31 (filing)Federal SAT
REPSE renewalBefore September 30STPS / repse.stps.gob.mx
DIOT (Third-Party Operations Informative Declaration)17th of the following monthFederal SAT

Frequently Asked Questions