Every import into Mexico stands on a document file. If one document is missing or inconsistent, the operation stops — and every stopped day means storage and demurrage. This is the master list:
The must-haves
| Document | Who issues it | What it’s for |
|---|---|---|
| Commercial invoice | Your supplier | The basis for customs value |
| Transport document (BL, AWB or waybill) | The carrier/forwarder | Covers the cargo and its route |
| Packing list | Your supplier | Package detail for the origin inspection (previo) |
| Customs entry (pedimento) | Your customs broker | The declaration filed with the tax authority (SAT) |
| Broker authorization (encargo conferido) | You (SAT portal) | Authorizes your broker to clear your goods |
The ones that depend on your product
- Certificate / declaration of origin — for a preferential treaty rate (USMCA, CPTPP…). Without it you pay the general rate, even though the treaty exists.
- Product standards (NOMs) — certificates or attestations (labeling, safety) depending on your tariff code.
- Prior permits — from the health (COFEPRIS), defense (SEDENA), environment (SEMARNAT) or economy (SE) authorities, depending on the goods.
- Sector registry — if your tariff code sits in a sensitive sector.
- Value declaration (MVE) — the statement of how your customs value was built.
Not sure what applies to YOUR product? Look up your tariff code in the calculator and check its regulatory file: NOMs, permits and restrictions by code.
The advice that saves the most money
Build the file BEFORE the goods ship. 80% of customs problems start with documents nobody reviewed until the cargo was already at the port. A 30-minute document check saves weeks of delay.
First import? Write to us and we’ll review your file before anything ships.