Mexico’s Electronic Value Declaration Is Now Mandatory: What Changes in Your Clearance from August 1

For months two worlds coexisted: importers already transmitting their value declaration through Mexico’s trade single window, and importers still sheltered by the transitional allowance. That second world just ended. The Eleventh Transitory of the 2026 foreign-trade rules (RGCE) ran through July 31, and no new extension was published in the DOF, Mexico’s federal register, this week. From August 1, the electronic value declaration — the MVE — is the only way.

The operational translation is brutally simple: without a transmitted MVE folio, your customs broker cannot clear the goods. It isn’t a fine after the fact or a fixable observation — it’s the key that unlocks the customs entry itself.

What it is (and why it exists)

The manifestación de valor is a declaration, under oath, of the elements you used to determine the customs value of your goods: price paid, additions such as freight and insurance, related-party links with your supplier, commissions, royalties. It’s the importer obligation of Article 59 of Mexico’s Customs Law that for years was met on paper and now lives as an electronic transmission in VUCEM (the foreign-trade single window), producing a folio that gets declared on the pedimento — the customs entry.

For the authority, it means full traceability over the tax base. For you, it means inconsistencies between invoice, additions and customs entry are no longer caught in an audit years later — they get cross-checked in the moment.

What you need ready

• A valid e.firma (the importer’s electronic signature) — the transmission belongs to the importer, not the broker, even if the broker supports you operationally.
• The value elements of each operation: invoice, freight, insurance, and any applicable addition or deduction.
• Clarity on related parties: if you buy from an affiliate, the declaration asks expressly.
• A named owner on your team: the MVE is transmitted BEFORE clearance; discovering at vessel arrival that nobody filed it costs storage by the day.

The full step-by-step in the single window — with the system’s official screenshots — is in our guide at freightspot.com/recursos/ayuda/como-hacer-manifestacion-de-valor.

The mistakes already stopping clearances

Filing late. The MVE is not an arrival-day task. Fold it into the same checklist you use to instruct the shipment.

Incomplete additions. Declaring the invoice value while forgetting freight or insurance produces a tax base that doesn’t match the customs entry — an instant inconsistency.

Ignoring related-party status. Answering “not related” while buying from your parent company is a false statement under oath, with everything that implies.

Assuming the broker “does it.” They support you, but the obligation and the signature are yours. If your operation doesn’t have the process, the process doesn’t exist.

The MVE turns customs valuation — the technical topic nobody looked at — into a requirement of every single clearance. Importers who master their additions will clear like always; those who don’t are about to meet storage charges.

Sources

SAT — 2026 Foreign Trade Rules (RGCE), Eleventh Transitory

FreightSpot guide — How to file the value declaration in VUCEM, with official screenshots