Independent resource on Mexico export manufacturing
IMMEX, nearshoring and cross-border logistics, explained for US buyers.
Plain-language guidance to evaluate manufacturing in Mexico before you sign a supplier, ship across the border or commit to a nearshoring plan — written for procurement, supply chain and operations teams.
Where to start
Start with the decision you are facing
Prepare the US import from Mexico
Identify the importing party, product evidence, duty checks and transport requirements for a specific shipment.
Understand IMMEX
What the IMMEX program is, why it matters for US buyers, and what it does and does not mean when a Mexican supplier says they "have IMMEX".
Qualify a Mexican supplier
The checklist that separates a supplier that can actually take a US order from one that cannot: IMMEX status, customer-supplied materials, inventory control and border lanes.
Move freight across the border
Laredo cross-docking, drayage and IMMEX warehousing — how the pieces fit and how to evaluate a provider without losing document control.
Interactive Audit Tools & Anexo 22 Catalogs
Client-side Anexo 24 vs. Data Stage CSV reconciler, SCCCyG (.txt) validator, Safe Harbor vs. Shelter calculator, and all 18 searchable SAT Anexo 22 catalogs.
Technical reference library
Customs, IMMEX compliance & live border wait times
Interactive Audit Tools & Searchable Statutory Databases
- Interactive Tools & Statutory Catalogs Hub (/en/tools/)
- Anexo 24 ERP vs. Pedimento / Data Stage CSV Reconciler
- SCCCyG (Anexo 30) .txt File Structure & Duplicate Validator
- Maquiladora Safe Harbor Tax (6.9% / 6.5%) & Shelter vs. Standalone Calculator
- SAT Anexo 22 Master Reference Hub (All 18 Searchable Appendices)
- Mexican Pedimento Codes (12 Deep-Dive Profiles: A1, IN, RT, V1, F4, F5, AF, BO, R1, A3, G1, CT)
CFO Tax, IVA/IEPS Certification & Audit Defense
- IVA & IEPS Certification in Mexico (Rubro A, AA, AAA): 0% VAT Credit & Audit Rules
- Maquiladora Safe Harbor (6.9% vs. 6.5%) & Permanent Establishment (PE) Tax Rules
- Anexo 24 Apartado C: SAT Real-Time Online Inventory Access Mandate
- SAT Data Stage (Glosa) vs. Anexo 24 Monthly Reconciliation Playbook
- PAMA Customs Seizure in Mexico (Art. 151): How to Protect Consigned Machinery & Inventory
- SCCCyG Over-Discharge (Sobredescargo), R1 Rectifications & UMT Unit Conversion
Mexican Customs, Pedimentos, Tariffs & Industry Playbooks
- What Is a Mexican Pedimento? Structure & Compliance Guide
- Mexican Customs Valuation: Electronic Manifestación de Valor (E2) & Incrementables
- Mexican HTS Tariff Classification: 8-Digit TIGIE + 2-Digit NICO Explained
- IMMEX Retention Deadlines (18 Months vs. 6 Months for V1) & F4/F5/A3 Regularization
- IMMEX Regime Change (Clave F4 / F5) vs. Regularization of Expired Inventory (Clave A3)
- Mexico Steel & Aluminum Tariffs (15%–50%): IMMEX Annex II, Clave C6 & PROSEC / Regla Octava
- Automotive Tier 1 & Tier 2 IMMEX Compliance: USMCA 75% RVC, LVC & V1 Transfers
- Medical Device Manufacturing in Mexico Under IMMEX: COFEPRIS, Sterilization & Scrap
IMMEX Program, Software & Consigned Assets
- How to Get an IMMEX Program in Mexico
- The 5 IMMEX Modalities: Industrial, Services, Shelter, Outsourcing & Holding
- Contract Manufacturing vs. Submaquila (Art. 21) in Mexico
- How to Choose Anexo 24 & SCCCyG (Anexo 30) Software for Your ERP
- Consigned Tooling, Molds & Machinery Under IMMEX (AF Pedimentos)
- Anexo 24 (Annex 24) & Anexo 30/31 Explained: IMMEX Inventory & VAT Credit Control
Live Commercial Border Wait Times (CBP Radar)
- Laredo — World Trade Bridge & Colombia Solidarity
- Pharr–Reynosa (plus Anzaldúas & Hidalgo info)
- El Paso–Ciudad Juárez — Ysleta–Zaragoza, Bridge of the Americas & Santa Teresa
- Otay Mesa–Tijuana Commercial Cargo Port
- Nogales–Mariposa Commercial Cargo Port
- Eagle Pass–Piedras Negras · Brownsville · Calexico East
Official sources
Always verify current rules
Editorial independence
A resource to orient you, not an institutional representative
ammex.org.mx is an independent editorial resource. It does not represent and is not affiliated with AMMEX, Index Metropolitana, INDEX Nacional, tax or customs authorities, or any prior operator of the domain.
Important notice
The information on this site is general in nature and is not legal, tax, accounting or customs advice. For operational decisions, each company should consult official sources and qualified advisors.