Mexico: Mexico Enacts Decree to Modify Customs Law

Effective January 1, 2026, Mexico's customs reform introduced a mandatory Electronic Value Declaration, fully digitizing customs valuation and significantly strengthening documentation and enforcement requirements. Penalties for valuation errors have increased and customs brokers will no longer benefit from liability exclusions, resulting in greater shared compliance exposure across the supply chain. Errors or late corrections may trigger inspections, fines, or precautionary seizure, making early preparation and accurate documentation essential.