Corp 91 final bundle: the operator kit for the IMMEX maquila plant on Mexico northern border

Mexican maquila under USMCA

Mexico export-manufacturing industry employs 3.1 million people per INEGI data, concentrated across six states that together account for 78% of national maquila employment: Chihuahua (Juarez), Baja California (Tijuana and Mexicali), Sonora (Nogales and Hermosillo), Tamaulipas (Reynosa and Matamoros), Coahuila (Saltillo, Monclova, Piedras Negras) and Nuevo Leon (Apodaca, San Nicolas, Santa Catarina). Average plant-operator wage in 2026 runs between MXN 18,500 and MXN 24,000 per month before benefits, with a clear differential between Tier 1 plants (Boeing, Foxconn, Aptiv, Continental, Toyota) and Tier 2-3 plants in the regional supply ecosystem.

The United States-Mexico-Canada Agreement (USMCA, T-MEC in Spanish, ACEUM in French) entered into force on 1 July 2020 and replaced NAFTA. The 2026 six-year review opens dispute panels over rules of origin in automotive (75% regional value with 70% regional steel and aluminium rule), steel and aluminium (70% regional), creative industries, pharmaceuticals and medical devices. Mexican maquila plants exporting to the United States must demonstrate regional content calculated by the transaction-value method or by the net-cost method to access tariff preferences.

Annex 4-B of USMCA sets rules of origin for the textile and apparel sector, directly affecting apparel maquila plants installed in Coahuila (Saltillo, Torreon), Yucatan (Merida, Tizimin) and Campeche (Campeche, Ciudad del Carmen). The yarn-forward rule requires that yarn, fabric and garment be produced in the USMCA region to access zero tariff. Plants that comply with the rule attach to the export invoice a USMCA certificate of origin issued by the exporter or producer and keep it for five years for presentation to US Customs and Border Protection (CBP) or the Canada Border Services Agency (CBSA).

The IMMEX programme (Industria Manufacturera, Maquiladora y de Servicios de Exportacion) is the legal instrument that lets plants temporarily import inputs, parts, components and machinery without paying IVA or import tariff, provided the finished product is exported within 18 months. The IMMEX Maquiladora modality covers subcontracting between maquilas (the historic PITEX-ALTEX programme); the IMMEX Manufacturera modality covers 100% Mexican or mixed-capital plants; the IMMEX Servicios modality covers operations without physical transformation (design centres, engineering, call centres). SAT audits compliance annually through verification visits, pedimento review and inventory reconciliation.

IMMEX compliance and CFDI 4.0 invoicing

The corp 91 final bundle is invoiced under CFDI USO key G03 (general expenses) with deductibility under Article 27 LISR as manufacturing operating expense. For plants holding an active IMMEX registration, the CFDI 4.0 invoice includes the IMMEX programme number in the observations field and is filed with the plant's voucher record. For recurring monthly deliveries to a single plant, a consolidated invoice is issued per period with breakdown by operator and payroll number.

The 16% IVA breaks out line by line on the CFDI 4.0. For plants in free zone (Salinas Victoria, Ramos Arizpe, San Luis Potosi industrial zone, Ciudad Juarez free zone), IVA is set at 0% with the Free Zone complement attached to the voucher plus the free-zone authorisation number issued by the Secretariat of Economy. For interstate deliveries from the Saltillo distribution centre, the Carta Porte 3.0 complement is attached with the shipment data, transport operator, SAT key and SCT permit type.

Maquila plants subcontracting between maquilas (IMMEX Maquiladora modality) issue the inter-plant merchandise transfer voucher when the kit is assembled in one plant and shipped to another plant of the same corporate. The assembly invoice carries the IMMEX programme number of the assembling plant, and the delivery invoice carries the IMMEX programme number of the receiving plant. Monthly accounting reconciliation happens against the transfer report issued by the corporate and is filed with the SAT record.

For multinational corporates with maquila plants in Mexico and manufacturing operations in the United States and Canada, the kit is invoiced in MXN or USD depending on the corporate's intercompany policy. Conversion uses the FIX exchange rate published by Banco de Mexico on the day before the invoice. For corporates reporting ESG indicators to MSCI, Sustainalytics or S&P Global, the kit expense is reported as investment in occupational safety and personnel development in the annual sustainability report, and the CFDI 4.0 invoice serves as supporting documentation for the reported spend.

Cross-border logistics and delivery to the plant

The corp 91 final bundle's main distribution centre sits in Saltillo, Coahuila, with road coverage to Ciudad Juarez (10 hours by trailer), Monterrey (1.5 hours), Reynosa (4 hours), Tijuana (24 hours via Nogales) and San Luis Potosi (4 hours). For urgent deliveries with less than 5 business days' notice, air freight is available from Monterrey International Airport or Queretaro Intercontinental Airport. The carrier complies with NOM-251 for PPE transport and identifies the shipment with the corporate purchase-order number and the plant seal.

For recurring weekly or fortnightly deliveries, an annual contract is set up with 30-day advance scheduling and safety stock equivalent to one month of consumption at the corporate warehouse. Automatic replenishment kicks in when inventory drops below the reorder point agreed with the purchasing area. Plant delivery goes to the corporate's PPE store, signed off by the safety and hygiene officer with photographic capture of the received material for document control.

For multinational corporates with maquila plants in Mexico and manufacturing operations in the United States (El Paso TX, Tucson AZ, Laredo TX, Brownsville TX), the kit is delivered to the Mexican plant and, when equivalent PPE is required for operators who cross the border as part of their work, an OSHA-certified equivalent (OSHA 1910.133 for eye protection, OSHA 1910.135 for head protection) is quoted separately at no extra cost. Coordination between both factories runs through a single point of contact with country-by-country invoicing.

Each delivery's documentation includes the SAT-stamped CFDI 4.0 invoice, packing list with payroll number and size for each operator, regulatory compliance certificates (ANSI Z89.1, ANSI Z87.1, NOM-009-STPS-2011, NOM-133-STPS-2024), and DC-3 training constancia when the operator receives it for the first time. Documentation is delivered physically with the PPE at the plant and digitised in the corporate document management system for later query, five-year retention and authority-requirement response.

Pricing, MOQ and lead times

Pricing in MXN before 16% IVA. The corp 91 final bundle starts at MXN 1,480 per operator from MOQ 30 pieces for a single plant. In series of 200 to 500 kits for one plant or a group of plants, the unit cost drops to MXN 1,210. In annual contracts for corporates with a stable PPE programme, the unit cost drops to MXN 980 with safety stock, automatic replenishment and scheduled plant delivery. The CFDI 4.0 invoice is stamped by the SAT with deductibility as manufacturing operating expense.

Production lead times run 12 to 15 business days for kits with the UPF 50+ ripstop shirt and personalised hi-vis vest with logo. Series above 500 kits for a single plant require 18 to 22 business days scheduled 4 weeks ahead of the required date. Delivery goes direct to the plant's PPE store or to the corporate address with specialised carrier. Urgent air freight runs 3 to 5 business days with additional charge depending on destination.

For multinational corporates with maquila plants in Mexico and manufacturing in the United States and Canada, we coordinate deliveries from Saltillo with a single point of contact. The invoice is issued in MXN or USD per the corporate's intercompany policy with per-plant breakdown and compliance with local temporary-import regulations when the PPE crosses the border. Delivery timeline extends to 10 business days for shipments outside continental Mexico via Brownsville-Matamoros or Tijuana-San Diego crossings.