The IMMEX program is a Mexican government initiative that lets foreign companies temporarily import raw materials, components, and machinery into Mexico without paying the 16% value-added tax (VAT), as long as the finished goods or services are exported. IMMEX stands for Industria Manufacturera, Maquiladora y de Servicios de Exportación.
That one tax mechanism is why more than 5,800 manufacturers, employing over 3.2 million people, run their Mexican operations under IMMEX.
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Get the program right and you protect your margin.
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Get it wrong and Mexico’s tax authority (the Servicio de Administración Tributaria, or SAT) can freeze your cash flow or revoke your permit.
This guide covers what IMMEX is, who qualifies, the five program types, and why it matters more in 2026 than it did a year ago.
What is the IMMEX program, in plain terms?
IMMEX lets a foreign company produce goods or deliver services from Mexico cost-effectively, without paying VAT on the inputs it brings in temporarily. You may have heard the word maquiladora. A maquiladora is a factory that imports raw materials, transforms them (machining, assembly, repair, and similar), and exports the finished product. A maquiladora is one way to operate under IMMEX, not a separate program. For the history of the model, see Maquila Manufacturing in Mexico.
IMMEX is not only for physical goods. It also covers services in the knowledge-transformation process: logistics, purchasing, design engineering, and other corporate functions performed in Mexico. We cover that angle in IMMEX for export services. For the complete picture of the program, the Prodensa IMMEX program hub is the place to start.
What IMMEX does for your tax bill
The headline benefit is VAT. Temporary imports under IMMEX are subject to Mexico’s general 16% VAT rate. With VAT/IEPS certification (often called CIVA), an IMMEX company receives an immediate VAT credit when goods clear customs, so the temporary import happens on a cashless basis. IEPS is Mexico’s excise tax on certain products; certification can make it refundable too.
Certification comes in three tiers, A, AA, and AAA, governed by Annex 30. The tiers differ mainly in how long the certification lasts: one, two, and three years respectively, with higher tiers requiring more on machinery value and headcount. For the full mechanics, see our VAT/IEPS (CIVA) certification guide. The practical takeaway: the VAT credit is the difference between a competitive operation and one carrying a 16% cost penalty on every imported component.
Who qualifies, and what IMMEX requires
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Export at least US$500,000 annually, or export at least 10% of total sales.
- Run an electronic inventory-control system. Annex 24 mandates real-time tracking of every temporarily imported good: entries, exits, production usage, returns, and exports.
- Comply with the time frames for importing and exporting goods or services.
- Operate from registered locations in Mexico.
- Industrial: the most common type, for companies running their own manufacturing operation.
- Holding: for organizations managing multiple IMMEX operations under one structure.
- Service: for companies providing export services rather than transforming physical goods.
- Shelter: manufacturing under an operating partner that holds the IMMEX permit for you. See our Shelter program [internal link: /shelter].
- Third party: provides manufacturing services to other IMMEX companies.
These are not box-checking exercises. Annex 24 inventory control and the SAT audit that tests it are where most IMMEX problems start. We break down the obligations in IMMEX operative compliance, and the program structure in The IMMEX Framework.
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The five types of IMMEX
IMMEX is not one-size-fits-all. There are five program types, and the right one depends on how you intend to operate:
Why IMMEX matters more in 2026
IMMEX companies are the engine of Mexican export manufacturing. They account for roughly 80% of the country’s manufacturing exports and about 15% of all formal employment, and close to 60% sit in the northern border states that feed US supply chains. Half of all goods traded between the United States, Mexico, and Canada are components used in shared production. A single automotive part can cross the border seven or eight times as it moves through sub-assemblies. IMMEX is the framework that keeps that flow VAT-efficient.
Three things raised the stakes for 2026. The USMCA joint review opens July 1, 2026, bringing tighter scrutiny on rules of origin. The SAT has stepped up origin verification and audits ahead of that review. And after the US Supreme Court struck down the IEEPA tariffs in February 2026, USMCA-qualifying goods became more valuable, because qualification now does more to lower landed cost. IMMEX does not by itself make your product originate under USMCA, that takes a separate origin analysis, but it is the platform every other trade strategy sits on. This is the binational reality: a decision made at headquarters in the US shows up as a margin number at the plant in Mexico.
"Nearshoring to Mexico is a reality today that generates employment, economic development, social mobility, and well-being for Mexicans. The degree of success will be determined by our ability to generate, with great agility, the conditions that allow us to take advantage of it to its full potential." -Emilio Cadena, CEO of Prodensa
How Prodensa helps you run IMMEX
IMMEX is an Advisory problem before it is a paperwork problem. The requirements shift, the audits are frequent, and the penalties for getting inventory control or origin wrong are real.
Prodensa administers IMMEX operations end-to-end:
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registration,
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VAT/IEPS certification,
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Annex 24 and Annex 30 compliance,
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AEO (Authorized Economic Operator) certification,
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and origin determination.
Our IMMEX practice is led by María Elena Sierra, former Head of Certification and Affairs at the SAT and a World Customs Organization certified AEO Expert, who currently administers more than 70 IMMEX operations for clients in Mexico.
If you are weighing whether to enter Mexico under IMMEX, or whether your current program can withstand a 2026 audit, start with the IMMEX advisory hub or talk to our team directly.
Navigating IMMEX program requirements?
Schedule a call with our IMMEX advisory team to walk through your options and pressure-test your program against the 2026 audit environment.
Frequently asked questions
What is the IMMEX program in Mexico?
The IMMEX program (Industria Manufacturera, Maquiladora y de Servicios de Exportación) is a Mexican government program that lets foreign companies temporarily import raw materials, components, and equipment into Mexico without paying the 16% VAT, provided the finished goods or services are exported. It is the framework most foreign manufacturers use to produce in Mexico cost-effectively.
What are the requirements to qualify for IMMEX?
A company must export at least US$500,000 per year or at least 10% of total sales, run an Annex 24 electronic inventory-control system that tracks temporary imports in real time, comply with import/export time frames, and operate from registered Mexican locations. VAT/IEPS (CIVA) certification is a separate, closely related approval most IMMEX companies also obtain.
What is the difference between IMMEX and a maquiladora?
A maquiladora is a factory that imports materials, transforms them, and exports the finished goods. It is one way to operate under IMMEX, not a separate program. IMMEX is the broader legal framework, and it covers services as well as physical manufacturing.
Does IMMEX eliminate VAT in Mexico?
Not automatically. Temporary imports are subject to the 16% VAT, but with VAT/IEPS (CIVA) certification an IMMEX company receives an immediate VAT credit at customs, so the import is effectively cashless for VAT. Certification comes in A, AA, and AAA tiers lasting one, two, and three years.
What are the types of IMMEX programs?
There are five: Industrial (own manufacturing), Holding (multiple operations under one structure), Service (export services), Shelter (operating under a partner that holds the permit), and Third party (manufacturing services for other IMMEX companies).
Is IMMEX still worth it in 2026 with the tariff changes?
For most foreign manufacturers, yes, and arguably more so. After the IEEPA tariffs were struck down in February 2026, USMCA qualification became more valuable, and IMMEX is the platform every origin and tariff strategy sits on. With the USMCA review opening July 1, 2026 and SAT audits intensifying, a well-run IMMEX program is a competitive advantage.
IMMEX Terminology
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