Pedimento Guide: Mexico's Customs Declaration Explained

A pedimento declares, line by line: the importer's identity (RFC), the tariff classification (fracción arancelaria) of each product, quantities and units, customs value, country of origin, the applicable duty rate and the calculated duties and taxes. It also carries the declaration code (clave de pedimento) that identifies the customs regime: definitive import, temporary import under IMMEX, transit, and others.

Every figure on the pedimento must tie to your supporting documents: the commercial invoice, packing list, bill of lading and certificates. Mexican customs cross-checks these, and inconsistencies are the most common reason shipments get flagged.

Only a licensed Mexican customs broker (agente aduanal) can file a pedimento. This is not a formality: the broker is legally co-responsible for the accuracy of the declaration alongside the importer. Choosing a broker is therefore a compliance decision, not a price-shopping exercise.

A good broker validates your classification, value and documents days before the cargo arrives, and pre-files the pedimento so clearance starts the moment the goods are available. A bad broker discovers problems while your container accrues demurrage. Ask any prospective broker: do you pre-file, do you operate daily at my port, and who answers the phone when there is a red light?

Once filed, SAT's system assigns each pedimento a green light (desaduanamiento libre: automatic release) or a red light (reconocimiento aduanero: physical inspection). The selection follows risk criteria the authority does not publish in full, but in practice, new importers, sensitive product categories, value anomalies and document inconsistencies get inspected more often.

A red light means customs officials verify the goods against the declaration at the inspection platform. With clean documents, inspections typically add 2 to 5 days. With problems found during inspection (misclassification, undervaluation, missing permits), the shipment can be held for weeks and fined.

The DODA (Documento de Operación para Despacho Aduanero) is the digital operation document that accompanies the customs clearance, linking the pedimento to the transport and the cargo. Together with the pedimento, it forms the digital trail SAT uses to audit imports.

Mexico's customs digitalization is advancing: electronic filing is already the norm and paper processes continue to shrink. Shippers should expect more data validation, not less, in the coming years. Clean master data (consistent product descriptions, values and classifications across every document) is the best preparation.

Most pedimento problems are document problems upstream. The classics:

As a forwarder, we coordinate the full pedimento process without you having to manage the broker directly: document validation before departure, classification review, pre-filing timed to arrival, and milestone updates through clearance. If you do not have a Mexican entity, our importer-of-record structure covers the RFC and registry requirements.

One contract, one responsible party: the pedimento is our problem, not yours.