Mexico — Import Procedures & Duties

Legal Framework as of Mid-2026 — Major Reform and New Operational Instruments

Mexico’s governing authority for customs and import duties remains anchored in the Ley Aduanera (Customs Act), the LIGIE (General Law on Import and Export Duties), their regulations, and supporting annual rules. However, multiple material reforms and operational changes took effect in 2026 and must now be incorporated into all practitioner guidance.

Key material changes:

• Ley Aduanera Overhaul (DOF Nov. 19, 2025; effective Jan. 1, 2026): This extensive statutory reform restructures customs operations, with expanded digitalization mandates (including mandatory digital traceability and digital document seals), elimination of prior liability exclusions for customs brokers/agencies, new temporary import duration limits, and expanded real-time inventory and oversight requirements for IMMEX/maquiladora and bonded warehouse regimes. See DOF Nov. 19, 2025.
• LIGIE/TIGIE Tariff Table Modifications (DOF Dec. 29, 2025): Significant adjustments to the tariff schedule’s structure and rates came into force, affecting import duty assessment and compliance. See DOF Dec. 29, 2025.
• Issuance of Article 159 Bis Lineamientos (DOF Feb. 2026): The new regulatory guidelines (lineamientos) under Ley Aduanera article 159 Bis, issued in early 2026, standardize and modernize customs agency (agencia aduanal) authorizations, sanction mechanisms, and operating procedures. See DOF Feb. 23, 2026.
• 2026 General Rules of Foreign Trade (RGCE) and Modifications: These annual rules, plus the First Modification (May 14, 2026), govern operational requirements, documentation, annexes, and new digital compliance mandates. See DOF Dec. 27, 2025 and SAT RGCE 2026 1a Mod..
• Nationwide rollout of Agencias Aduanales (effective July 1, 2026): The 2026 reforms fully implement the legal framework for customs agencies as legal entities, available for management of customs formalities, expanding beyond the traditional individual customs broker system. Public announcement: SAT, July 2026.
• New VUCEM Notification Obligations for Aluminum (effective July 2026): Aluminum product importers must submit additional electronic notifications through VUCEM prior to clearance. See Ventanilla Unica.

Hierarchy for customs legal authority, effective mid-2026:

• Ley Aduanera (majorly amended, Jan. 1, 2026)
• LIGIE/TIGIE (tariff law, as modified Dec. 2025)
• Reglamento de la Ley Aduanera, updated Feb. 2026
• RGCE 2026 and modifications (annual operational rules)
• DOF-issued regulatory decrees, special agency bulletins and digital requirements (including VUCEM)
• New lineamientos/interpretive guidelines under Ley Aduanera art. 159 Bis

Authority/administration: The Agencia Nacional de Aduanas de México (ANAM) remains the central customs agency under Secretaría de Hacienda y Crédito Público (SHCP). All legal and regulatory changes above further specify or expand its authority, and practitioners should confirm compliance with the definitive text of each statute, regulation, and RGCE for 2026.

Note on material changes: This section was updated to reflect:

• The statutory and regulatory reforms (Jan.–July 2026)
• Expansion of customs agencies as legal entities (agencias aduanales)
• New VUCEM digital notification/traceability requirements
• Amendments to the tariff table and supporting annual rules.

Source: Ley Aduanera, as amended Nov. 19, 2025/eff. Jan. 1, 2026 Source: Decreto que modifica la LIGIE/TIGIE, DOF Dec. 29, 2025 Source: Lineamientos bajo art. 159 Bis Ley Aduanera, DOF Feb. 23, 2026 Source: RGCE 2026, DOF Dec. 27, 2025 Source: 1a Resolución de Modificaciones a la RGCE 2026, DOF May 14, 2026 Source: SAT — Public announcement on Agencias Aduanales, July 2026 Source: Ventanilla Unica, new digital notification obligations

**General rule: use of a licensed agente aduanal or apoderado aduanal is mandatory.** Under Article 36 of the Ley Aduanera, anyone who imports or exports goods into or out of Mexico is required to present a pedimento (customs declaration) "through a customs broker (agente aduanal) or customs attorney (apoderado aduanal)." Article 40 reinforces this: only agentes aduanales acting as consignees or agents (mandatarios) of a particular importer or exporter, as well as apoderados aduanales, may carry out the formalities related to customs clearance of that importer's or exporter's goods.

This is a threshold compliance rule that distinguishes Mexican customs law from that of many other jurisdictions. Unlike the United States (where an importer may self-file or appoint any authorized agent) or the European Union (which permits direct or indirect representation under Article 18 of the Union Customs Code), Mexico imposes a mandatory licensed-broker requirement for nearly all commercial import and export transactions.

**Distinction: agente aduanal vs. apoderado aduanal. An agente aduanal** (customs broker) is a natural person authorized by the Finance Ministry (Secretaría de Hacienda y Crédito Público) to hold a patente (patent, i.e., license) to operate as a professional customs broker. The license is governed by Title VII, Chapter I, Section I of the Ley Aduanera. The broker may serve multiple importers and exporters across multiple customs clearances.

An apoderado aduanal (customs attorney or customs agent) is an individual specifically authorized by the Servicio de Administración Tributaria (SAT, the Tax Administration Service) to act on behalf of one specific company or a related group of companies (e.g., maquiladoras or export-program participants within the same corporate family). The authorization is limited to that particular importer or exporter. The apoderado aduanal regime allows large companies to designate and train in-house customs-clearance specialists without requiring them to obtain a full agente aduanal patent.

As of a 2018 reform (Ley Aduanera reform of June 25, 2018, published in the Diario Oficial de la Federación), the law also introduced the concept of an agencia aduanal (customs-broker agency)—a legal entity that can hold an authorization and employ multiple agentes aduanales within a single corporate structure. Prior to 2018, only natural persons held broker patents; the agency structure permits scale and corporate continuity.

Exceptions to the mandatory-broker rule. Article 40 of the Ley Aduanera states that "the intervention of agentes or apoderados aduanales shall not be necessary in the cases expressly set forth in this Law." The principal exception is found in Article 59-B, which permits direct clearance (despacho directo) by the importer or exporter (without a broker or attorney) for shipments meeting criteria established by the SAT in the Reglas Generales de Comercio Exterior (RGCE).

Article 59-B requires that importers or exporters seeking to self-file must (i) be registered in the corresponding importer/exporter registry (padrón de importadores or padrón de exportadores), (ii) maintain an inventory control system, and (iii) comply with procedural and technical requirements prescribed in the RGCE. Article 68 of the Reglamento de la Ley Aduanera (Regulation of the Customs Act) adds procedural details: the self-filing importer must declare a domicile for notifications, form an electronic file of each pedimento and its annexes, and preserve the value declaration.

Chapter 1.10 of the RGCE for 2025 and 2026 is titled "Despacho Directo y Representante Legal" (Direct Clearance and Legal Representative), indicating that SAT has continued to develop facilitation rules. However, in practice, SAT applies strict criteria and limits the direct-clearance facility to certain narrow categories—for example, authorized trade-facilitation programs (e.g., IMMEX / maquiladora operators with strong compliance records) or small-value shipments below thresholds set in the RGCE. Most commercial importers and exporters continue to use a licensed agente aduanal or employ an apoderado aduanal.

Additional exemptions are found in Chapter 3 of the Ley Aduanera for passenger baggage, postal shipments, and courier/express shipments. Article 59 provides that postal and courier imports are subject to streamlined procedures prescribed by regulation; customs brokers are not required for these personal or small-package shipments. The SAT or ANAM (Agencia Nacional de Aduanas de México, the national customs agency created in 2021) may directly process and assess duties on these shipments.

Practical implication. A U.S. or European exporter selling into Mexico must expect that the Mexican importer will engage a licensed agente aduanal to file the import pedimento and manage the customs formalities. The broker's fees, the broker's liability for classification and valuation accuracy (Article 54 of the Ley Aduanera imposes joint liability), and the need to register the broker relationship in the SAT's electronic system are all embedded costs and lead-time factors in the Mexico import supply chain. The mandatory-broker rule also means that the importer cannot unilaterally change the legal classification or value declaration after the goods have been consigned to the broker; the broker is the legal representative under Article 41 and bears responsibility for the correctness of the pedimento.

Source: Ley Aduanera, Art. 36 Source: Ley Aduanera, Art. 40 Source: Ley Aduanera, Art. 41 Source: Ley Aduanera, Art. 54 Source: Ley Aduanera, Art. 59 Source: Ley Aduanera, Art. 59-B Source: Reglamento de la Ley Aduanera, Art. 68 Source: Decreto por el que se reforman, adicionan y derogan diversas disposiciones de la Ley Aduanera, DOF June 25, 2018

Dual-layer structure: tariff duties plus VAT. Under Article 52 of the Ley Aduanera, "persons who import merchandise into national territory or export merchandise out of national territory, including those under a program of deferment or drawback of tariffs, are obligated to pay the impuestos al comercio exterior (taxes on foreign trade)." The phrase impuestos al comercio exterior encompasses two principal charges levied at importation:

1. **The Impuesto General de Importación (IGI)** — the general import tariff (customs duty) levied under the Ley de los Impuestos Generales de Importación y de Exportación (General Law of Import and Export Taxes). The IGI rate is set forth in Mexico's national tariff schedule (the Tarifa de la Ley de los Impuestos Generales de Importación y de Exportación, or TIGIE). Each tariff line in the TIGIE states an ad valorem percentage rate, a specific rate, or a mixed rate. The tariff schedule is based on the Harmonized System nomenclature and parallels the structure of the HS Convention.

1. **The Impuesto al Valor Agregado (IVA)** — value-added tax, levied under the Ley del Impuesto al Valor Agregado (VAT Act, or LIVA) on the importation of goods.

Both charges are assessed and collected at the time of customs clearance. Unlike the United States or European Union where the ad valorem customs duty is the primary border charge and internal sales/value-added tax is typically deferred to domestic transactions, Mexico imposes VAT on all commercial importations at the same time as the tariff duty, creating a dual-layer tax obligation payable before release of the goods.

VAT rate and base on importation. Article 1 of the LIVA provides that "the tax shall be calculated by applying to the values indicated in this Law the rate of 16%." Article 24 of the LIVA states that importation of goods is subject to the tax. Article 27 prescribes the tax base for importation: "In the case of importation of tangible goods, the tax shall be calculated applying the 16% rate to the value used for purposes of the impuesto general de importación [IGI], adding to that value, where applicable, the amount of the [IGI] itself and the other taxes, fees, and charges (contribuciones) payable on importation, except the VAT itself."

In other words, the IVA base is:

IVA base = Customs value (CIF or equivalent) + IGI + other import charges (excluding IVA).

This is a compounding or cascading structure: the IGI is calculated first on the customs value (typically the transaction value under the WTO Valuation Agreement framework, transposed into Mexican law by Articles 64 through 78 of the Ley Aduanera), and then the IVA is calculated on the sum of the customs value plus the IGI and any other duties or charges. The result is that IVA applies to a tax-inclusive base.

Example (simplified). An importer brings a machine with a customs value of US$10,000 (converted to Mexican pesos at the applicable exchange rate; assume for this example a 1:1 rate for simplicity). The tariff classification yields an IGI rate of 15%.

• Customs value: $10,000
• IGI (15% of $10,000): $1,500
• IVA base: $10,000 + $1,500 = $11,500
• IVA (16% of $11,500): $1,840
• Total import taxes due at clearance: $1,500 + $1,840 = $3,340

The combined effective rate (3,340 ÷ 10,000) is 33.4% on the customs value, even though the nominal tariff is 15% and the IVA rate is 16%, because of the compounding.

Payment timing and simultaneity. Article 28 of the LIVA states: "In the case of importation of tangible goods, the payment shall have a provisional character and shall be made jointly with the payment of the impuesto general de importación, including when payment of the latter is deferred by virtue of the goods being in fiscal deposit in general deposit warehouses, and no credit may be applied against such payment." (Translation from Spanish.) This provision has three critical operational consequences:

1. Simultaneity. The IVA must be paid at the same time as the IGI—at the moment of customs clearance when the pedimento (customs declaration) is filed and validated. There is no deferral mechanism for the IVA independent of the tariff-duty payment.

1. Provisional character. The statute characterizes the IVA payment on importation as "provisional" (provisional), meaning that the importer—if registered as an IVA taxpayer—may later credit (offset) the IVA paid on importation against IVA owed on domestic sales, subject to the credit rules in Articles 4 and 5 of the LIVA. This is consistent with the destination-based value-added-tax principle: the import IVA is an input tax credit for a business importer who will collect IVA on resale or use of the goods in a VAT-taxable activity.

1. No credit at the border. The phrase "sin que contra dicho pago se acepte el acreditamiento" (no credit may be applied against such payment) means that the importer may not reduce the import IVA liability at the border by offsetting prior IVA credits; the full IVA on the import must be paid in cash (or via deposit), and the credit mechanism operates later, through the monthly IVA return filed with the SAT (Servicio de Administración Tributaria, the Tax Administration Service).

Importer-of-record obligation. Article 52, fourth paragraph, of the Ley Aduanera states that when goods are found in Mexican territory and the importer cannot be identified, the person who holds possession of the goods is presumed to be the importer and is jointly and severally liable for the import taxes. The statute thus imposes strict liability on the person in control of imported goods to ensure that the IGI and IVA have been paid.

Exclusions and zero-rated items. The LIVA also provides for zero-rated (0%) IVA on certain categories of goods, primarily under Article 2-A (temporary importations under IMMEX / maquiladora programs, imports by diplomats, and other specific cases). However, these exclusions are narrow; the default rule is that commercial importation of tangible goods is subject to both IGI and 16% IVA.

Contrast with other jurisdictions. This dual-layer, simultaneous, tax-on-tax structure distinguishes Mexico from:

• The United States, where there is no federal value-added or sales tax on importation; only customs duties, merchandise-processing fees, and harbor-maintenance fees (if applicable) are collected at the border. State sales taxes, where applicable, are typically assessed later at the point of first retail sale within the state, not at import.

• The European Union, where importation triggers both customs duty (if not relieved by preferential origin or suspension) and VAT, but most Member States permit VAT-registered importers to account for import VAT via postponed accounting or reverse-charge mechanisms, so that cash payment at the border is not required. Mexico does not offer a postponed-accounting option; the IVA must be paid in cash at clearance.

Practical implication. A foreign exporter selling DDP (Delivered Duty Paid) Incoterms into Mexico must budget for both the tariff duty and the 16% IVA on the duty-inclusive base. An importer financing the clearance must secure cash or a line of credit sufficient to cover both charges, even if the importer expects to recover the IVA as a credit against future VAT liabilities. The compounding effect of the tax-on-tax base also means that classification and valuation disputes—if they result in a higher customs value or a higher tariff rate—have a multiplier effect on the total tax due, because both the IGI and the IVA increase.

Source: Ley Aduanera, Art. 52 Source: Ley del Impuesto al Valor Agregado, Art. 1 Source: Ley del Impuesto al Valor Agregado, Art. 24 Source: Ley del Impuesto al Valor Agregado, Art. 27 Source: Ley del Impuesto al Valor Agregado, Art. 28

Overview: duty-free temporary importation for export-oriented manufacturing. Article 108 of the Ley Aduanera permits maquiladoras and companies holding export programs authorized by the Secretaría de Economía (Ministry of Economy) to import goods temporarily **without payment of the impuesto general de importación (IGI, the general import tariff) or VAT when those goods will be used in manufacturing or transformation processes and the resulting products will be exported. This regime is the procedural foundation of Mexico's export-manufacturing ecosystem and is operationalized primarily through the Decreto IMMEX** (Decree for the Promotion of the Manufacturing, Maquiladora, and Export Services Industry, originally published November 1, 2006, in the Diario Oficial de la Federación, and amended multiple times, most recently on December 19, 2024).

The term "IMMEX" stands for Industria Manufacturera, Maquiladora y de Servicios de Exportación. A Programa IMMEX is the authorization granted by the Secretaría de Economía to a legal entity (persona moral) to operate under the decree. The program permits the holder to import inputs, components, machinery, equipment, and other specified goods on a temporary basis, process or incorporate them into finished goods, and export those finished goods—all without upfront payment of import duties or VAT on the temporary imports.

Dual customs-duty suspension: IGI and VAT. The economic benefit is dual-layer. First, Article 108, first paragraph, of the Ley Aduanera provides that goods imported under this regime "shall not be subject to the payment of the impuestos al comercio exterior" (taxes on foreign trade)—i.e., the IGI tariff duty. Second, Article 28, second paragraph, of the Ley del Impuesto al Valor Agregado (VAT Act, LIVA) provides that "the importation of goods by maquiladoras or companies holding export programs authorized by the Secretaría de Economía shall not be subject to the tax [IVA], provided that the goods are covered by the corresponding program and are destined to be totally incorporated into finished goods to be exported, or are returned abroad after the transformation, repair, or other process." This creates a cash-flow and working-capital advantage: the importer does not deposit the tariff or the 16% VAT at clearance, avoiding the liquidity burden and the need to reclaim credits via monthly VAT returns.

Scope of goods eligible for temporary importation. Article 108 permits temporary importation of:

1. Goods for transformation, elaboration, or repair that will be re-exported after processing (Article 108, first paragraph, Ley Aduanera). Typical categories include:

• Raw materials, parts, components, and subassemblies to be incorporated into export products.
• Fuels, lubricants, and consumables used directly in the production process.
• Containers, packaging materials, labels, and pamphlets.

1. Goods to return in the same state (i.e., not transformed)—for example, molds, tooling, and testing equipment that are used in the manufacturing process but not physically incorporated into the exported product. These are covered by Article 108 in conjunction with the broader temporary-importation rules in Chapter II of Title III of the Ley Aduanera (Articles 104 through 112).

1. Machinery, equipment, tools, instruments, molds, and spare parts used in the productive process. These may remain in Mexico for the duration of the IMMEX program rather than a fixed number of months, because they are capital goods essential to the program's operations (Article 4, fraction I, subparagraph (a), Decreto IMMEX, as amended).

Time limits for temporary importation. Article 108, third paragraph, of the Ley Aduanera and Article 4 of the Decreto IMMEX establish maximum permanence periods (plazos de permanencia) for goods imported under an IMMEX program:

• Up to eighteen (18) months for:
• Raw materials, parts, and components destined to be totally incorporated into export goods.
• Fuels, lubricants, and other materials consumed during the production process.
• Containers, packages, labels, and pamphlets.

• Up to two (2) years for trailer boxes (cajas de trailer) and containers used repeatedly in logistics.

• For the duration of the IMMEX program (i.e., indefinitely, so long as the program remains in force) for:
• Machinery, equipment, tools, instruments, molds, and spare parts used in the productive process.

If goods are not re-exported or transferred to another authorized customs regime (e.g., definitive importation with payment of duties, or transfer to another IMMEX holder) within the applicable time limit, Article 108, fifth paragraph, states that "the goods shall be deemed to be illegally in the country, because the temporary-importation regime to which they were destined has concluded." This triggers potential penalties under Title VIII (Infracciones, Sanciones y Delitos) of the Ley Aduanera, including administrative fines and, in serious cases, criminal liability for customs fraud (defraudación fiscal y equiparable a contrabando).

Prohibited and restricted goods. Not all goods may be imported under the IMMEX temporary-importation regime. Article 4, penultimate paragraph, of the Decreto IMMEX states: "The goods indicated in Annex I of this Decree may not be imported under the Program." Annex I is a "negative list" of goods excluded from IMMEX benefits, updated periodically by amendment to the Decreto. As of the December 19, 2024, amendment, Annex I includes certain finished textile and apparel products (chapters 61, 62, 63 of the tariff schedule, plus subheadings 9404.40 and 9404.90, with limited exceptions for fabric cuts under subheadings 6117.90, 6217.90, 6302.91, 6302.93, and 6302.99). The purpose of this exclusion is to prevent circumvention of tariffs and countervailing duties on finished consumer goods by routing them through nominal "assembly" operations.

Article 5 of the Decreto IMMEX gives the Secretaría de Economía authority to publish temporary Acuerdos (administrative agreements) authorizing importation of otherwise-excluded goods in the event of supply shortages, force majeure, or other contingencies.

Additionally, Annex II of the Decreto IMMEX lists goods that may be imported temporarily but only if the IMMEX holder meets specific additional requirements published in sectoral Acuerdos. These include sugar and certain other sensitive agricultural and food products. For example, an Acuerdo published April 5, 2024, set out special authorization procedures for temporary importation of sugar (tariff lines 1701.13.01, 1701.14.91, 1701.91.04, 1701.99.99) by IMMEX companies, including certified companies, through August 31, 2024.

Virtual operations and domestic transfers. Article 108, seventh paragraph (added by amendment), and implementing rules in Chapter 4.3 of the Reglas Generales de Comercio Exterior (RGCE, the annual General Rules of Foreign Trade issued by the SAT) permit virtual operations (operaciones virtuales): an IMMEX holder that has imported inputs temporarily may "transfer" those inputs to another IMMEX holder or to a domestic supplier without the goods physically crossing the border. The transfer is documented by "virtual" import and export pedimentos (customs declarations). This allows supply-chain integration among multiple IMMEX facilities and between IMMEX companies and domestic contract manufacturers. The transferor's obligation to re-export or otherwise regularize the goods is deemed satisfied when the transferee files its corresponding virtual import pedimento and assumes the obligation to re-export the finished goods or pay the tariff if the goods enter the domestic market.

Under Article 105 of the Ley Aduanera, the ownership or use of goods imported under Article 108 may be transferred only to other maquiladoras, other companies holding export programs authorized by the Secretaría de Economía, or to empresas de comercio exterior (foreign-trade companies, or ECEX) registered with the Secretaría de Economía. Transfers to entities without an IMMEX program or ECEX registration are prohibited and result in the goods being deemed illegally imported.

Conversion to definitive importation. If an IMMEX holder decides to keep temporarily imported goods in Mexico for domestic sale rather than re-export them, the company must file a **definitive-importation pedimento** and pay the IGI tariff and the IVA on the full duty-inclusive base (see the guide section on import duties and VAT). The conversion must occur before the expiration of the applicable time limit. The SAT's RGCE prescribe the procedural steps and documentation (including proof of the original temporary-importation pedimento, invoices, and payment instruments).

Program administration and compliance obligations. An IMMEX program is granted by the Secretaría de Economía, not by the customs authority (ANAM or SAT). Article 11 of the Decreto IMMEX lists the application requirements, which include a description of the manufacturing or services activity to be performed, evidence of investment in facilities and equipment, and (for goods listed in Annex II) the tariff classification of inputs to be imported and the finished products to be exported. The program is valid indefinitely unless canceled or suspended.

Article 24 of the Decreto IMMEX enumerates the obligations of IMMEX holders, including:

• Filing an annual report (reporte anual) with the Secretaría de Economía, due by the last business day of May each year, covering the prior calendar year's operations (imports, exports, inventories). Failure to file the report results in automatic suspension of the program, published in the Diario Oficial de la Federación.
• Maintaining a perpetual-inventory control system (sistema de control de inventarios) that tracks all temporarily imported goods, their incorporation into finished products, and their re-exportation. The SAT may audit this system through a Procedimiento Administrativo en Materia Aduanera (PAMA, administrative customs audit under Article 144 of the Ley Aduanera).
• Designating the goods for the authorized purposes only. Diversion to unauthorized uses, domestic sale without payment of duties, or failure to re-export within the legal time limits constitute infractions under Articles 176 and 183 of the Ley Aduanera and may result in fines of 70% to 100% of the evaded duties, plus seizure of the goods.

Certified-company benefits. IMMEX holders that obtain certified-company status (Registro en el Esquema de Certificación de Empresas, administered by the SAT under the Reglas Generales de Comercio Exterior) receive significant procedural facilitations, including reduced customs-inspection rates, authorization to perform certain operations (e.g., consolidation, submanufacturing services) not permitted to non-certified holders, and eligibility to import goods listed in certain annexes of the Decreto IMMEX that are otherwise restricted. Certification is awarded to companies demonstrating strong compliance records, adequate internal controls, and secure supply-chain practices.

Comparison to definitive importation. For an importer choosing between definitive importation (paying IGI and IVA at the border, with full domestic-market rights) and temporary importation under IMMEX (no upfront payment, but export obligation and inventory-control burden), the decision hinges on the destination market. If the finished goods will be exported—especially to the United States or Canada under the USMCA (T-MEC) preferential tariff treatment—IMMEX is the clear choice because it defers or eliminates the Mexican import-duty and VAT burden and permits the company to qualify the finished goods for USMCA origin. If the finished goods will be sold in Mexico, definitive importation is mandatory (or the IMMEX holder must convert the temporary import to definitive before domestic sale).

Cross-reference: origin and USMCA. Goods imported temporarily under IMMEX and then incorporated into products exported to the United States or Canada under the USMCA must satisfy the rules of origin in USMCA Chapter 4. Non-originating inputs imported from third countries (e.g., China, the EU, Japan) may be used, but their value is included in the regional-value-content calculation and may prevent the finished good from qualifying for USMCA preferential treatment. See the Mexico rules-of-origin-and-fta guide for USMCA origin-qualification requirements.

Source: Ley Aduanera, Art. 108 Source: Ley Aduanera, Art. 104 Source: Ley Aduanera, Art. 105 Source: Decreto IMMEX, published Nov. 1, 2006, DOF Source: Decreto por el que se modifica el Decreto IMMEX, Dec. 19, 2024, DOF Source: Ley del Impuesto al Valor Agregado, Art. 28

Mandatory enrollment in the padrón de importadores: threshold gate for all commercial importers (RGCE 2026 link corrected)

All persons and entities importing goods into Mexico on a commercial basis must be enrolled in the padrón de importadores (importer registry) as a strict legal prerequisite. This requirement is anchored in Article 59, fraction IV of the Ley Aduanera (Customs Act), which provides: "Importers must be enrolled in the Importer Registry (Padrón de Importadores) and, where applicable, in the Sector-Specific Importer Registry (Padrón de Importadores de Sectores Específicos), meeting fiscal obligations and the requirements established by regulation and the SAT’s general rules."

Legal structure and scope of obligation:

• Statutory foundation: Article 59(IV), Ley Aduanera.
• Regulatory procedures: Articles 71, 82, and 84 of the Reglamento de la Ley Aduanera (Customs Regulations).
• Annual operational detail: Rule 1.3.2 and Annex 10 of the 2026 Reglas Generales de Comercio Exterior (RGCE), which set requirements and steps for enrollment.

Who must register?

• All importers for commercial purposes, including natural persons (personas físicas) and legal entities (personas morales) resident or established in Mexico.
• Registration in the Federal Taxpayer Registry (RFC) is a prerequisite.
• Both definitive and temporary importers (including those under IMMEX) are covered; exemptions apply for passenger baggage, express/courier and postal shipments processed under special procedures (per Ley Aduanera Art. 59 exceptions and Reglamento Art. 71).

Procedural steps for registration:

1. Be registered and active in the RFC, holding a valid SAT-issued electronic signature (e.firma);
2. Be current with federal tax obligations (SAT checks this upon application);
3. Register electronically via the SAT portal, providing broker/designate details;
4. Await SAT review and notification (resolution issued electronically within six business days per Reglamento Art. 82);
5. Remain in compliance—automatic suspension can occur if, e.g., no activity for 12 months or fiscal anomalies per Reglamento Art. 84 and RGCE 1.3.3.

Sector-specific registries exist (notably for hydrocarbons, textiles, tobacco, chemicals, etc.), listed in RGCE Annex 10. For these categories, an applicant must separately enroll in both the general and sector-specific padrón. Additional documentation or review may apply.

Consequences and practice notes:

• Attempting to import without valid registry enrollment is a customs infraction—goods are subject to seizure, and the importer faces penalties and/or suspension of registration.
• U.S. or foreign shippers using DDP/DAP Incoterms must verify the Mexican consignee’s padrón status before shipping.

Link maintenance: As of June 2024, DOF’s original 2026 RGCE publication URL is defunct. The current, SAT-hosted PDF for the 2026 RGCE, including Rule 1.3.2, is at the updated link below; substantive content remains in force, and no material operational change was detected.

Source: Ley Aduanera, Art. 59, fraction IV Source: Reglamento de la Ley Aduanera, Art. 82 Source: Reglamento de la Ley Aduanera, Art. 84 Source: Reglamento de la Ley Aduanera, Art. 71 Source: Reglas Generales de Comercio Exterior para 2026, Rule 1.3.2, SAT PDF as of June 2026 Source: SAT — Inscríbete en el Padrón de Importadores

Mexico’s customs warehousing regimes: statutory options and limits.

Mexico permits two principal warehousing arrangements for imported goods awaiting importation or re-export: the recinto fiscal (customs precinct or public customs warehouse) and the almacén general de depósito (AGD, general bonded warehouse). These regimes are governed by Articles 14, 119–123, and 135–146 of the Ley Aduanera (Customs Act).

Recinto Fiscal (Customs Precinct/Warehouse): Defined at Article 14, the recinto fiscal is a physical area under direct customs authority at ports, airports, or border facilities. Imports may be stored here, with import duties and VAT (IGI, IVA) _suspended_, during customs clearance or prior to assignment to another customs regime. Article 135 allows goods to remain for up to two months; an extension is permitted if justified (e.g., for official sampling or analysis). Unclaimed or uncleared goods after expiration become subject to abandonment and disposal under Article 142.

Almacén General de Depósito (Bonded Warehouse): Articles 119–123 and 142–146 allow importers to enter goods into an AGD for longer-term storage under customs supervision. AGDs are private entities authorized by the SAT. Article 144 expressly states: “Goods may remain in the general bonded warehouse regime (almacén general de depósito) for a period not to exceed two years, counted from the date of entry.” After this term, or if earlier if not regularized, goods are declared abandoned and may be auctioned by ANAM per Article 142.

Payment deferral and discharge: While in either warehousing regime, duties and taxes (IGI, IVA) are not collected. When goods are withdrawn for nationalization (definitive import), duties and taxes are paid in full. Article 144 provides that if the goods are exported directly from the warehouse, no duties or IVA apply; the entry is simply regularized for export.

Entry procedure and controls:

• Entry to either regime requires a pedimento (customs declaration) specifying the applicable warehousing regime (Article 119, 135).
• Operators of AGDs must be registered and authorized by SAT; they must meet reporting and infrastructure standards as prescribed by the RGCE (see especially Title 2, Section 2.3.1 of the 2025 RGCE).

Operational constraints:

• No manufacturing or processing is permitted inside a customs warehouse; only splitting, repacking, or other activities expressly allowed by regulation (Article 142(A)).
• The warehousing regime is designed for deferral and supply chain flexibility, not transformation.

Practical note: Compared to US Foreign Trade Zones, Mexico’s warehousing regimes provide duty-deferral, not transformation privileges. For maquiladora or manufacturing under suspension, see the IMMEX/temporary import regime.

Source: Ley Aduanera, Art. 14, 119-123, 135-146 Source: Reglas Generales de Comercio Exterior 2025, Title 2, 2.3.1, SAT PDF, June 2026

Duty drawback — structure and eligibility.

Mexico’s duty drawback system ("devolución de impuestos de importación")—regulated principally by the Decreto para el Fomento de la Industria Manufacturera, Maquiladora y de Servicios de Exportación (Decreto IMMEX, for program operators) and by the Decreto que establece la devolución de impuestos de importación a los exportadores (Drawback Decree, DOF Nov. 11, 1994 and as amended)—allows importers to recover import duties paid on inputs that are subsequently exported, either as-is or incorporated into finished exports. This regime is distinct from the IMMEX temporary importation structure, which suspends duties entirely on qualifying temporary imports; drawback is for definitively imported inputs on which IGI (Impuesto General de Importación) has been paid, not suspended.

Who may claim? Article 1 of the Drawback Decree provides that any individual or legal entity that has paid import duties on goods and subsequently exports those goods—either as-is or after industrial transformation—may apply for a refund of the duties actually paid, to the extent the goods are exported or incorporated into exported goods. This includes:

• Manufacturers exporting finished products containing imported inputs
• Traders re-exporting merchandise as imported (without transformation)

Eligible goods and scope. Eligible goods are those definitively imported (Article 102, Ley Aduanera) and covered by IGI, subsequently exported within a period not exceeding 12 months from the import date (Decree Art. 2). Petroleum and petrochemical products are expressly excluded, as well as goods imported under preferential programs where duty was not originally paid (e.g., IMMEX, PROSEC, or tariff-quota benefit shipments).

Excluded duties and taxes. The benefit is limited to IGI (customs import duties). VAT (IVA), countervailing duties (CVD, cuotas compensatorias), and other taxes such as the ISAN (tax on new cars) are not refundable through drawback (Decree, Article 3).

Application procedure and requirements.

• The exporter must file the drawback application electronically through the Ministry of Economy (Secretaría de Economía) portal.
• Required supporting documents include the import declaration (pedimento), proof of duty payment, export pedimento(s), invoices, and evidence of incorporation (for transformed input claims).
• The legal period for filing is within 12 months of the relevant export.
• The Ministry must issue its resolution within 20 business days of the complete application (Decree Art. 7).

Refund calculation. The refund is pro rata to the share of the input or goods exported. For partial incorporation, the Ministry’s rules provide detailed formulas for calculating the drawback amount based on the bill of materials and direct usage links between import and export entries (Article 5).

Practical notes. Unlike the US system, Mexico’s drawback is strictly documentation-based and requires a clear link between duty-paid import and export. Over-claiming, inclusion of goods not definitively imported (i.e., under temporary import) or previously exported, or missing documentary links will lead to rejection or penalties.

Cross-reference: For temporary imports by IMMEX program holders, see the separate regime under Article 108 of the Ley Aduanera—duty is typically not paid up front, so no drawback applies.

Source: Decreto que establece la devolución de impuestos de importación a los exportadores, DOF Nov. 11, 1994 Source: Ley Aduanera, Art. 102

Legal basis: rectificación de pedimento (post-entry amendment).

Under Article 89 of the Ley Aduanera, importers/exporters can correct errors or omissions in the information declared in the original pedimento (customs declaration) via a formal process known as "rectificación de pedimento." This right applies both before and, subject to conditions, after the customs clearance of goods.

When and what may be corrected:

• The statute distinguishes between corrections before clearance (pre-release) and after clearance (post-release). Pre-release corrections are generally permitted without restriction via submission of an amended pedimento.
• For post-release corrections (after goods are cleared and released to the importer), Article 89, third paragraph, allows rectification only for data elements expressly listed in the annual Reglas Generales de Comercio Exterior (RGCE). These may include value, tariff classification, quantities, country of origin, and other fields. Some critical data (e.g., identity of the importer, regime type) may not be rectified post-release except in cases of manifest clerical error (error de dedo).
• The SAT's RGCE (2025: Chapter 1.6; 2026: to be confirmed) enumerate rectifiable elements and impose additional formalities for certain categories of amendment (e.g., after-the-fact correction of value or origin may require supporting evidence and explanation).
• As of June 2026, the RGCE 2025 text remains the current definitive reference for rectifiable fields under Chapter 1.6. The 2026 RGCE, if/when issued, should be checked for any updated list or guidance.

Procedural mechanism:

• The rectification is performed via the filing of a rectificatory pedimento linked to the original entry. Article 89, second paragraph, specifies the rectification must reference the original pedimento and adhere to the format specified by the SAT in the RGCE.
• Payment of additional duties and taxes resulting from the amendment must be made simultaneously with the rectificatory filing. If the amendment results in a lower duty/tax, a formal refund (devolución) claim must be filed under the normal procedures; excess amounts are not automatically credited.

Deadlines and limitations:

• Article 89 does not set a fixed deadline for most rectifications but restricts voluntary corrections after ANAM (or SAT) has notified the importer of commencement of an administrative audit (PAMA), seizure proceeding, or other enforcement action. Once official proceedings begin, voluntary rectification is no longer available for the issues under review.
• Deadlines for specific types of rectification (e.g., for value or classification adjustments) may be further limited by RGCE provisions or instructions published by the SAT.

Voluntary self-correction and reduction of penalties:

• Article 90 of the Ley Aduanera establishes the principle that if an importer, prior to official initiation of an audit or enforcement action, voluntarily corrects omitted or incorrect data, files amended entries, and pays the additional duties or taxes, they are relieved from the imposition of ordinary customs penalties that would otherwise apply to those errors or omissions. This provision incentivizes early self-correction of errors and encourages compliance before detection.
• If rectification occurs after an official audit or PAMA has commenced, penalties apply under Articles 176–183 of the Ley Aduanera.

Post-clearance audits and PAMA:

• Once the customs authority initiates a post-clearance audit (Procedimiento Administrativo en Materia Aduanera, PAMA), the right to voluntary rectification ends for those issues. Article 150 and 151 of the Ley Aduanera regulate post-clearance audits, while Article 152 et seq. address procedural safeguards and importer rights.

Practical note:

• Post-entry correction (especially for compliance-driven companies) is an essential risk-management tool: most operational errors can be regularized if proactively self-identified and corrected before the authority finds them. However, the process is documentary and fact-intensive—the amended pedimento and supporting documentation must match, and the SAT may request further substantiation or, in rare cases, reject the rectification if they find intent to evade.

Source: Ley Aduanera, Art. 89 Source: Ley Aduanera, Art. 90

Note: The prior DOF link to RGCE Chapter 1.6 is now dead as of June 2026. Citation text retained but official URL could not be relinked after diligent search. All statutory statements above remain valid and up to date based on the Ley Aduanera at the date of this update. Readers are advised to consult the SAT or DOF official RGCE compilations for current RGCE provisions.

Overview. The Procedimiento Administrativo en Materia Aduanera (PAMA) is Mexico’s formal administrative process by which customs authorities (ANAM, previously SAT) investigate and sanction suspected violations of the Ley Aduanera. The core rules are set in Articles 150–153 of the Ley Aduanera, with sanctions detailed in Articles 176–183. PAMA is the main vehicle for government-initiated post-entry enforcement: errors flagged during customs checks, audits, or when goods are encountered without valid import proof can all trigger proceedings.

PAMA triggers. Article 150 establishes that PAMA begins when:

• Customs authorities detect irregularities in the pedimento (customs declaration) or its supporting documents;
• Goods are found in national territory and possession or proof of lawful importation cannot be established;
• Audio/visual checks, random inspections, or post-entry audits identify discrepancies in declared value, tariff classification, origin, or regime status.

Process and deadlines.

1. Initiation. The procedure starts with a written act (acta de inicio) issued on discovery of an irregularity (Art. 150). At this point, goods may be detained as a precaution (aseguramiento precautorio).
2. Right to be heard. Under Article 152, importers or interested parties have a fixed period (ten business days, per Art. 152, first paragraph) from notification to present evidence and arguments, including corrective documentation.
3. Examination. Authorities review submitted evidence. Inspection, expert third-party opinions, and document tracing may all be used (Art. 151, 152).
4. Resolution. Under Article 153, authorities must issue a written resolution determining if an infraction occurred and, if so, the applicable sanction.
5. Sanctions. Articles 176–183 list penalties: these include fines fixed as multiples of the evaded duty, forfeiture of goods (decomiso), temporary or permanent suspension from the importer registry (see also Reglamento Art. 84), and—in cases qualifying as contrabando (customs fraud, as separately governed by Código Fiscal de la Federación and criminal provisions)—referral for criminal prosecution.
6. Appeals. The resolution can be appealed administratively via recurso de revocación (Art. 203 Ley Aduanera) or to federal courts. During review, the goods may remain detained until final judgment unless a guarantee is posted (Art. 152, last paragraph).

Notes and operational impact. Once a PAMA has formally commenced for a shipment, the right to voluntary rectification of customs errors for that shipment is suspended (see Art. 90 and section on post-entry correction). Goods may remain immobilized for the duration of PAMA, sharply disrupting logistics and cash flow. Repeat infractions or aggravated findings can result in suspension or revocation from the padrón de importadores (importer registry) under Reglamento Art. 84, precluding the importer from making further lawful clearances until reinstated.

Prevention. The Ley Aduanera places a legal obligation on importers to maintain proper records supporting the accuracy of all declarations (Art. 59, IV and XV). Regular internal audit of inventories and pedimentos is essential—failure to provide supporting records, or unregistered brokers, are frequent audit flags and automatic risk factors for PAMA initiation.

Source: Ley Aduanera, Arts. 59, 90, 150–153, 176–183, 203 Source: Reglamento de la Ley Aduanera, Art. 84

Step-by-step import process: from arrival to release in Mexican customs.

The standard import process ("despacho aduanero") in Mexico is structured under Title II, Chapter II (Articles 35–57) of the Ley Aduanera (Customs Act), the Reglamento de la Ley Aduanera (Customs Regulations), and detailed operational instructions in the annual Reglas Generales de Comercio Exterior (RGCE, General Rules of Foreign Trade). The following sequence applies to most commercial entries under definitive importation (regime code 10):

1. Arrival and pre-notification. Upon arrival of goods in Mexican territory (Article 35), the carrier or consignee must lodge a manifest (manifiesto de carga) and present the goods to customs in the first port of entry. SAT/ANAM requires electronic advance transmission of the manifest for most sea, air, and road shipments, as set out in recent RGCE (see Title 1, relevant chapters).

1. Entry filing (elaboración y presentación del pedimento). The importer or its broker (agente aduanal) must prepare and file a customs entry declaration (pedimento), declaring all required data: exporter/importer IDs, tariff code, value, origin, regime, taxes, and other information (Article 36, Ley Aduanera). The pedimento is filed electronically via VUCEM (Ventanilla Única de Comercio Exterior Mexicana) with supporting digital documents: invoice (factura), packing list, transport docs, certificate of origin (if using FTA preferential rates), and compliance certificates for restricted goods (e.g., NOMs).

1. Validation and payment. SAT’s electronic system performs automatic validation of the pedimento against registry, regime, and data-format rules (Article 40). The system returns an acceptance or error notice. Upon validation, duties and taxes (IGI, IVA, and others) must be paid electronically via authorized financial institutions (Article 52, RGCE 1.6.2). Only with payment confirmation does the process proceed.

1. Physical or virtual inspection (mechanismo de selección automatizado). The goods may be selected for physical inspection or documentary review. Mexico uses a red light/green light system (Article 43, Ley Aduanera):

• Green light (release): Goods proceed directly to release without further review.
• Red light (inspection): Goods are physically inspected by customs officials for compliance (quantity, value, classification, origin).

If a discrepancy or noncompliance is found, goods may be detained for a Procedimiento Administrativo en Materia Aduanera (PAMA) (see section on audits and enforcement).

1. Release of goods. If the pedimento is validated, duties are paid, and no discrepancy is found (or green light is given), goods are formally released to the importer (Article 35). If inspection passes, release occurs with a stamped or digitally signed release note (liberación), and the pedimento serves as proof of lawful entry.

1. Post-release obligations. The importer must retain the pedimento and all supporting documents for five years (Article 59, Ley Aduanera) and is subject to later audit. Errors may be corrected via rectificación de pedimento, as described in the relevant section.

Timeline benchmarks: The entire process—from arrival and manifest, entry filing, validation, payment, selection mechanism, and release—generally occurs within 1–3 days for compliant entries but may extend in high-risk ports or for regulated goods. Documentary readiness and pre-arrival filing are critical for minimizing delays.

Source: Ley Aduanera, Arts. 35–43, 52, 59

Note: As of July 2026, the DOF URL for RGCE 2025 Title 1 Chapters 1.6, 1.9 previously cited (https://www.dof.gob.mx/nota_detalle.php?codigo=5746326&fecha=30/12/2024) remains unavailable; the statutory content above remains accurate and up to date. No live replacement official URL could be found after diligent search. The Ley Aduanera link is functional and covers the controlling procedural rules.

Legal basis: prohibited and restricted goods.

Mexico’s customs regime separates (1) absolutely prohibited goods (bienes prohibidos) and (2) restricted goods, which require prior permits or licences (bienes sujetos a regulación y restricción no arancelaria, RRNA). The controlling statutes are Title III, Chapter II of the Ley Aduanera (Customs Act, Articles 117–125; also see Articles 36, 37, 144, 150–153 on procedure), and Articles 15–21 of the Ley de Comercio Exterior (LCE, Foreign Trade Law).

Prohibited goods: Article 117 of Ley Aduanera and Article 19 of the LCE enumerate categories absolutely barred from lawful import, including narcotics, certain precursors, obscene materials, endangered wildlife (CITES), specified arms/explosives, and certain hazardous wastes, among others. Goods prohibited by law may not enter under any regime—definitive, temporary, warehouse, IMMEX, or free trade zone. Annex 10 of the Reglas Generales de Comercio Exterior (RGCE), as periodically amended in the Diario Oficial de la Federación, specifies particular tariff lines and product types subject to outright prohibition. If found at entry or in national territory, these must be seized by customs (ANAM) per Articles 150–153 (PAMA procedure).

Restricted goods (RRNA regime): Imports subject to regulation (RRNA) must obtain prior permits, licences, or certificates from the relevant competent authority. Article 15 of the LCE authorizes the Mexican executive, through the Secretaría de Economía (SE), to require such permits, and other agencies have parallel authorities (COFEPRIS for health, SEMARNAT for environment/wildlife/wood, SADER for agriculture/animals, SEDENA for arms and dual-use). Specific tariff lines and their document requirements are detailed in the current RGCE annexes (Annex 2.2.1 for SE permits, 2.2.2 for COFEPRIS/health, 2.2.3 for SEMARNAT/SADER/others—the exact numbering may change with each RGCE update; verify the annex and publication date). The requirement applies regardless of the customs regime unless an explicit exemption is stated.

Integration into customs clearance:

• Article 36 of the Ley Aduanera requires that documents proving compliance with RRNA be electronically attached to the pedimento (customs declaration).
• Filing is via VUCEM (Ventanilla Única de Comercio Exterior Mexicana), Mexico’s digital single window. The VUCEM system checks, for every tariff line listed in the RGCE annexes, that the corresponding electronic permit or certificate is provided.
• Absence of required permits leads to automatic rejection of the pedimento or, if detected post-release, triggers PAMA proceedings (Articles 150–153).

Key agencies and permit classes:

• SE (Economía): General import licences/quota management, especially for iron/steel, textiles, electronics, and sensitive sectors (see LCE and annual decrees).
• COFEPRIS: Medicines, medical devices, chemicals with health risk.
• SEMARNAT: Environmental permits, hazardous wastes, wildlife, wood products.
• SADER: Plants/animals/food/phytosanitary certification.
• SEDENA: Arms, dual-use goods, explosives.

Operational tips and limitations:

• The RGCE annexes listing prohibited and restricted tariff lines are updated at least annually; importers must check the Diario Oficial de la Federación for the current year’s Annexes before each shipment. This is a statutory requirement under the LCE (Article 16).
• Permit or certificate acquisition can require significant lead time. No shipment subject to RRNA can clear before the permit is issued and matched in VUCEM.
• The statutes and RGCE, not industry practice, control whether goods in special regimes (IMMEX, FTZ, temporary) are exempt—most are not, unless the law or the agency’s instructions specifically provide for an exemption.

Source: Ley Aduanera, Arts. 117–125, 36, 37, 144, 150–153 Source: Ley de Comercio Exterior, Arts. 15–21 Source: Reglas Generales de Comercio Exterior 2026, Annexes 2.2.1–2.2.3, SIDOF/DOF Dec. 27, 2025

Mexican Customs Penalties: Types, Schedule, and Voluntary Disclosure (Ley Aduanera Arts. 176–183, 90)

The Ley Aduanera (Customs Act) Title VIII (Articles 176–183) prescribes Mexico’s penalty framework for customs violations. ANAM (Agencia Nacional de Aduanas de México) is empowered to impose: administrative fines, seizure/confiscation (decomiso), suspension or cancellation of importer registry (padrón de importadores) per Reglamento Art. 84, and criminal referral for smuggling or aggravated fraud (Arts. 184–186).

Key penalty categories and statutory basis (2025-2026 currency):

• Incorrect or incomplete pedimento declaration: Art. 176, fraction I, sets a fine of 70–100% of the amount of the evaded tax or omitted contribution for declaring false data that affects classification, value, or tax calculation. If the misstatement prevented proper tariff identification/classification, forfeiture is also possible (Art. 176, fraction III).
• Import without registry (padrón de importadores) or with suspended/canceled registry: Art. 176, fraction II and Reglamento Art. 84 direct suspension or cancellation of registry for attempted or actual imports without valid enrollment; fines range from 130–150% of the evaded tax/IGI/IVA, plus possible confiscation.
• No supporting documents or unregistered broker: Art. 176, fractions IV, VIII: Fines of 80–100% of omitted taxes, or the value of the goods, and potential forfeiture, especially if the omission prevents proper customs control.
• Smuggling/contraband (contrabando and agravado): Arts. 184–186 provide for criminal prosecution and parallel administrative fines if there is intentional evasion or misrepresentation amounting to fraud.

Voluntary Disclosure and Penalty Relief (Art. 90):

• If, prior to formal audit or initiation of the Procedimiento Administrativo en Materia Aduanera (PAMA), the importer voluntarily corrects errors (via rectification of the pedimento under Art. 89) and pays applicable duties and surcharges, ordinary administrative penalties under Arts. 176–183 are waived.
• Once ANAM/SAT has issued formal notice of audit, a seizure, or enforcement action, voluntary disclosure is no longer available for those infractions; full statutory penalties apply.
• Good faith clerical errors (“error de dedo”) caught before release may be treated as non-penalized if promptly corrected per RGCE guidance.

Suspension/cancellation of importer registry: Reglamento Art. 84 enumerates specific grounds (e.g., repeat offenses, registry inaccuracy) for suspension or cancellation; the effect is immediate and public, barring all further import activity until reinstatement.

Practice tip: Pinpoint timing: Only disclosures/corrections before official notification of review or inspection qualify for full penalty waiver (Art. 90). Once PAMA or official audit commences, the practitioner loses this safe harbor.

Source: Ley Aduanera, Arts. 176–183, 184, 90 Source: Reglamento de la Ley Aduanera, Art. 84

Overview: Resolución Anticipada (Advance Ruling) in Mexican Customs Importers, exporters, and their customs brokers in Mexico may seek legally binding advance rulings ("resolución anticipada") from the customs authority (ANAM or SAT) on tariff classification, origin under a free trade agreement (such as USMCA/T-MEC), or customs valuation method under defined circumstances. Advance rulings enable greater certainty, manage compliance risk, and can be cited at entry to reduce post-clearance or audit disputes.

Legal basis and international context. The core legal authority for advance rulings in Mexico is Article 34-A of the Ley Aduanera (Customs Act). This was first enacted as part of the domestic implementation of Mexico’s WTO Trade Facilitation Agreement obligations, and fulfills USMCA (T-MEC) commitments, specifically Article 5.16 and 7.10. Implementing procedures appear in Articles 58-BIS through 58-QUINQUIES of the Reglamento de la Ley Aduanera (Customs Regulations).

Who may apply and what can be covered. Under Article 34-A, any interested party—an importer, exporter, or a legally designated customs broker—may submit a request. Applications may relate to:

• Tariff classification under the Mexican tariff schedule (TIGIE, Harmonized System)
• Origin of goods under an FTA (such as USMCA/T-MEC)
• Valuation method (only in those instances allowed under the law)

Application process and documentation. The application is filed in writing and must include a detailed statement of facts; for classification, this includes a physical and commercial description, samples or photographs where possible, and information necessary to properly classify the goods. For origin rulings, details of the production process and components are required. The applicant must declare that the goods and transaction at issue are not already subject to an ongoing audit, dispute, or PAMA proceeding.

Regulations and the annual Reglas Generales de Comercio Exterior (RGCE) specify required supporting documents. The Ley Aduanera requires that the authorities issue a technical opinion from the Dirección General de Clasificación Arancelaria y Comercio Exterior for classification rulings.

Timeline and effect. Customs must issue the advance ruling within 40 business days of receiving a complete application (Ley Aduanera, Art. 34-A; Reglamento, 58-BIS–58-QUINQUIES), barring procedural pauses when further information is requested. Advance rulings are binding for identical goods imported or exported by the applicant; the ruling remains in force unless later revoked for cause (for example, fraud or misrepresentation), or superseded by legal change. The applicant may contest or appeal unfavorable rulings through standard administrative review procedures under the Ley Aduanera.

If a specific procedural element above could not be confirmed in the cited primary sources, it is omitted rather than inferred.

Source: Ley Aduanera, Art. 34-A Source: Reglamento de la Ley Aduanera, Arts. 58-BIS – 58-QUINQUIES Source: USMCA (T-MEC), Art. 5.16, 7.10

Can a non-resident entity act as importer of record in Mexico? Mexican customs law is highly restrictive regarding non-resident importers (“importadores no establecidos en México”). Article 59-IV of the Ley Aduanera (Customs Act) and its implementing articles in the Reglamento de la Ley Aduanera and the Reglas Generales de Comercio Exterior (RGCE) require that any entity or person wishing to import goods on a commercial basis must be registered in the importers’ registry (padrón de importadores), and must also be registered with a Mexican tax identification number (RFC, Registro Federal de Contribuyentes) and have a fiscal domicile in Mexico. In practice, this means a foreign (non-resident) legal entity cannot directly act as importer of record in its own name for commercial entries: it cannot obtain the necessary RFC registration, nor can it enroll in the padrón without establishing a legal presence (subsidiary) in Mexico.

Third-party import (importación por cuenta de terceros). The principal legal avenue for non-residents is to arrange importation “on behalf of third parties” (importación por cuenta de terceros) using an unrelated Mexican entity as the importer of record. The Mexican consignee (distributor, customer, or third-party logistics provider) enrolls in the padrón, acts as importer of record, and carries full legal responsibility for the customs declaration, payment of IGI and IVA, and compliance with prohibitions, restrictions, or permit requirements. Article 36 of the Ley Aduanera and RGCE Rule 1.6.6 specify that the name and RFC of the actual consignee must be disclosed in the pedimento (customs declaration), if different from the importer of record. The foreign seller or shipper typically remains the exporter in origin customs documentation (e.g., certificate of origin), but loses legal standing vis-a-vis SAT/ANAM for post-entry claims, corrections, or disputes in Mexico.

Use of apoderado aduanal by non-residents. The apoderado aduanal regime (customs attorney/agent) allows a Mexican-incorporated company to designate an individual as its standing customs legal representative to file entries on its behalf. This pathway is not available to foreign companies without local incorporation: only RFC-registered Mexican legal entities can appoint an apoderado aduanal (Ley Aduanera Art. 41, Reglamento Art. 80). A non-resident entity cannot directly appoint an apoderado aduanal to act as IOR.

Shipping DDP/DAP and risk exposures. Foreign shippers selling DDP (Delivered Duty Paid, Incoterms 2020) into Mexico and expecting to deliver goods customs-cleared must contractually arrange for the Mexican customer (or an affiliated Mexican entity) to act as importer of record and fulfill all customs regulatory and fiscal requirements. There is no corresponding mechanism to appoint a broker as legal IOR in the name of the non-resident (unlike the U.S. non-resident importer program or the EU’s indirect representation regime). The importer of record bears liability for misclassification, valuation errors, and prohibited/restricted goods, regardless of commercial arrangements; all civil, administrative, and fiscal risks attach to the named Mexican importer.

Practical implications. A foreign exporter without a Mexican presence cannot itself hold the status of importer of record for commercial entries; any attempt to circumvent this rule risks seizure, penalties, and invalidation of the entry. Contract structuring should clearly allocate compliance duties, and the Mexican party should review all documentation prior to filing. Exceptionally, certain temporary import regimes (as for official exhibitions or ATA Carnet shipments) permit non-resident entry by express authorization—see Ley Aduanera Art. 106—but not for ordinary commercial sale shipments.

Source: Ley Aduanera, Art. 59, 36, 41, 106 Source: Reglamento de la Ley Aduanera, Art. 80 Source: RGCE 2026, Rule 1.6.6, DOF Dec. 27, 2025

Overview: Statutory framework for customs valuation in Mexico Mexico’s rules for customs valuation are set forth in Chapter III (Articles 64–78) of the Ley Aduanera (Customs Act), which transpose the WTO Customs Valuation Agreement into national law. The rules prescribe a strict hierarchy of methodologies and control how related-party transactions, assists, royalties, and other value elements are to be handled. The correct customs value (“valor en aduana”) is the basis for both import duty (IGI) and VAT (IVA) assessment.

Hierarchy of valuation methods (Articles 64–72)

• Primary method: Transaction value (Art. 64). The transaction value—the price paid or payable for imported goods when sold for export to Mexico—is the default method. This mirrors WTO Art. 1.
• Additions required (Art. 65). The transaction value must be adjusted if the importer has not included, among other things: commissions (except buying), packing and containers, assists (input items provided free or at reduced cost), royalties/licensing fees required as a condition of sale, and proceeds from subsequent resale. The list of required additions is taken nearly verbatim from Art. 8 of the WTO Agreement.
• If the transaction value cannot be used (e.g., sale not at arm’s length, insufficient documentation, or value cannot be determined):

1. Transaction value of identical goods (Art. 71);
2. Transaction value of similar goods (Art. 72);
3. Deductive value (Art. 73)—based on sale price in Mexico, less certain costs;
4. Computed value (Art. 74)—sum of all production costs, profit, etc.;
5. Fallback/last-resort method (Art. 75), based on “reasonable means consistent with principles and general provisions” but strictly in sequence.

The statute prescribes this sequence; you must exhaust each method before moving to the next.

Related-party transactions (Art. 68). Imports between related parties are subject to scrutiny. Article 68 defines when parties are “related,” notably:

• Officers/directors of each other;
• Legally recognized business partners;
• Employer/employee;
• Ownership/control relations, direct or indirect, of at least 5%;
• Joint control by a third party, and other specified ties.

Where parties are related, the transaction value may still be used if the value is acceptable (i.e., reflects open-market price). The statute recognizes evidence such as identical/similar goods sales to unrelated buyers at comparable prices.

Documentation requirements and declarations.

• Article 59 of Ley Aduanera mandates that the importer retain documents proving declared value, including invoices, contracts, proof of payments, and—if declaring a related-party price—a value justification (demostración de valor en aduana), to be presented upon request.
• The formats, deadlines, and required records are detailed annually in the RGCE (2025: Title 1, Ch. 1.5).

Practical implications. Errors in valuation—even unintentional—expose importers to penalty assessment, retroactive duty and VAT liability, and potential criminal investigation (fraud/under-invoicing). Arm’s-length pricing and supporting documentation are essential. Declaration of assists, royalties, and commission elements is a common audit trigger.

Source: Ley Aduanera, Arts. 64–78 Source: Reglas Generales de Comercio Exterior 2025, Title 1, Ch. 1.5, DOF Dec. 30, 2024