How to prepare your company for mandatory MVE

Do not wait until October 31: prepare now

The MVE transition period ends October 31, 2026. Filing then becomes mandatory by customs regime, and for definitive imports — the regime most importers use — starting January 15, 2027. Many importers will wait until the last moment to prepare and find their goods stuck at customs because they could not generate the MVE in time. Do not be one of them.

• November 1, 2026 — Processing, transformation or repair in a bonded facility
• November 15, 2026 — Strategic bonded facility (RFE)
• December 1, 2026 — In-transit goods
• December 15, 2026 — Bonded warehouse
• January 1, 2027 — Temporary imports (IMMEX)
• January 15, 2027 — Definitive imports

Step 1: Verify your e.firma

The first and most basic step: verify your e.firma is valid. If it expires before your next import, renew it now. No e.firma means no MVE, and no MVE means no clearance.

Step 2: Identify your additions

Review your supplier contracts and ask: do we pay royalties? Do we provide materials, molds or designs to the manufacturer? Are there selling commissions? Does resale revenue revert to the seller? If any answer is yes, you have additions to declare.

Step 3: Document related-party relationships

If you purchase from companies in the same corporate group, you need a current transfer pricing study and documentation demonstrating market pricing.

Step 4: Establish internal process

1. Define who will be responsible for generating and signing the MVE
2. Establish information flow with your customs broker (they need the MNVA number)
3. Create a contract file with additions breakdown per supplier
4. Implement an electronic file system as required by Art. 59 section V LA
5. Train your team on basic customs valuation concepts

Step 5: Evaluate automation tools

If you import more than 5 operations per month, manual MVE completion is not sustainable. Evaluate tools like Camtom that automate Format E2 generation and VUCEM transmission.

Step 6: Test before October 31

Do not wait until it is mandatory to test. Generate a test MVE with a real operation to identify problems before the deadline pressures you. Camtom allows you to test at no cost.

MVE preparation checklist

• Valid e.firma verified
• Importer registry up to date
• Supplier contracts reviewed for additions
• Related-party relationships documented (if applicable)
• Internal MVE responsible person designated
• Customs broker workflow established
• MVE generation tool selected
• Pilot test completed
• Team trained on basic customs valuation
• Electronic file system implemented