Amid Tariff Pressure, Why Dredge Up PROSEC?

In 2026, Mexico adjusted import duty rates for a large number of tariff lines; the scope and extent of these adjustments are subject to the tariff schedule published in the Official Gazette of Mexico. For shipments processed through Meitiao’s Full warehouses and local overseas warehouses,Shipments within MexicoFor Chinese sellers, rising import costs will directly eat into the remaining gross profit after the platform’s deductions.

Against this backdrop, PROSEC (Programas de Promoción Sectorial, or Sectoral Promotion Programs)—which had previously attracted attention only from large manufacturing companies—has begun to catch the eye of cross-border sellers. Its core logic is straightforward: eligible manufacturing companies can benefit from preferential tariff rates—lower than the standard rates—when importing specific machinery, equipment, and raw materials used in their respective industries.

What is PROSEC, and who is eligible to apply?

PROSEC is administered by the Mexican Ministry of Economy (Secretaría de Economía) and is intended for companies registered in Mexico.Manufacturing Enterprise (Legal Entity)...granted by industry category. Approved enterprises are assigned a registration number, which they use when filing import customs declarations to apply preferential tax rates to the tariff codes listed on the schedule.

There are a few key points that need to be verified in advance:

• Applicants must generally be legal entities legally established in Mexico that engage in manufacturing activities; entities engaged solely in trade are generally ineligible;
• The scope of tax codes eligible for the preferential treatment is categorized by industry, and the lists vary by industry,The specific list and tax rates are subject to the Ministry of Economic Affairs’ current official announcement..;
• After approval, applicants must continue to meet the required commitments regarding output, investment, or employment, and be subject to subsequent verification;
• This program targets inputs used in the production process and is distinct from the tariff arrangements for imported finished goods.

PROSEC and IMMEX: It’s Not an Either/Or Choice—They’re Two Separate Matters

Many sellers confuse PROSEC and IMMEX, but in fact, they address different stages of the process:

• IMMEX This addresses the issue of bonded status: Companies import raw materials and components under bonded status, process them in Mexico, and then re-export them, temporarily exempt from general import duties and value-added tax (provided they provide the required security and maintain compliance).
• PROSEC This addresses the issue of tax rates: even for import duties that must ultimately be paid, the tax rates can be reduced through the use of an industry-specific list.

Therefore, in practice, the two systems are often used in conjunction: IMMEX is used to process export-oriented materials, while PROSEC is used to process inputs intended for the Mexican domestic market. It is important to note that each system has its own separate declaration, record-keeping, and audit requirements; using them together effectively doubles the compliance workload.

Three Prerequisite Issues That Must Be Confirmed First

• Is your business model viable? If you are simply shipping finished products from China to a warehouse in Mexico for resale, without any local processing or manufacturing, PROSEC does not apply, so there is no need to invest time and money in obtaining a certification you won’t use.
• Will the savings on customs duties cover the compliance costs? PROSEC requires a local entity, local accounting, and ongoing filing maintenance. First, multiply the estimated import value by the tax rate differential to calculate the annual savings, then compare that amount to the maintenance costs.
• Will this affect the status of existing RFCs and direct debits? Once you obtain the status of a production entity, your seller classification on the platform, the method for issuing invoices (CFDI), and the scope of your annual tax filing will all change accordingly, and you will need to recalculate all of these accordingly.

Recommended Landing Order

First, have a local accountant or customs consultant conduct an industry and tariff code comparison to confirm that your import tariff code is included in the applicable list; then, assess whether to establish a local manufacturing entity or partner with an existing, qualified local factory; and finally, proceed with the registration application. If you reverse this order, you may easily end up in a situation where you have obtained the necessary qualifications but cannot use the tariff code.

Qicaiying can assist in connecting you with licensed local accountants and customs service providers in Mexico to complete entity establishment, RFC registration, and a preliminary assessment of PROSEC eligibility. Specific conclusions are subject to official announcements from Mexico’s Ministry of Economy and the Tax Administration.