IMMEX program in Mexico: what it is and what it does to an exporter's cash flow

For a Mexican exporter, import VAT can tie up cash for months. IMMEX permits temporary importation; avoiding the VAT cash outlay requires tax certification or an accepted guarantee. The program also requires controls and reports.

In Soulbit Academy we read IMMEX as a treasury question: what the program is, which goods it covers, how much cash it frees, what compliance costs and what happens if it is suspended. We do not repeat the commercial angle of the case of a Mexican manufacturer collecting from a US client or the USMCA review analysis; here the focus is cash.

IMMEX program in Mexico: what it is and which modalities exist

The IMMEX program is the authorization that Mexico's Ministry of Economy grants, with a favorable opinion from the tax authority (SAT), to a legal entity so it can import goods temporarily for manufacturing, maquila or export services. It is governed by the decree promoting the manufacturing, maquiladora and export services industry, published in the Official Gazette (DOF) on 1 November 2006.

According to the text of the IMMEX decree, in its reference version dated 28 August 2025, one program can include five modalities. The first is the holding modality (controladora), which combines the operations of a certified company and its controlled subsidiaries. The second is the industrial modality, for processes that make or transform goods destined for export. The third is the services modality, limited to the activities the Ministry determines. The fourth is shelter (albergue), where foreign companies supply technology and production material without operating the program directly. The fifth is outsourcing (terciarización), where a certified company with no production facilities has manufacturing done by third parties registered in its program.

When a program is authorized, the Ministry transmits the company data so the SAT registers it automatically in the importer registry. That registry has its own suspension rules, covered in our article on the Mexican importer registry.

Who needs an IMMEX program?

A company needs it if it imports inputs, parts or machinery to transform them and export the result, or if it provides services on export goods. A company that imports only to sell in the domestic market does not fit the program's logic. The decree requires the imported goods to go to the authorized manufacturing or service operation.

Which goods enter temporarily and for how long

Under IMMEX, goods stay in Mexico from six months up to the life of the program, depending on their type and use. Article 4 of the decree sets those terms; articles 14 and 15 govern when general import duty (IGI) is payable. Table 1 summarizes the stay periods.

Type of goods	Maximum stay	What it means for treasury
Raw materials, parts and components that become part of the export good; fuels, packaging, labels and leaflets	Up to eighteen months	Inventory must be returned or receive another valid customs destination within the term
Containers and trailer boxes	Up to two years	Longer term, but with its own inventory control
Machinery, equipment, tools, molds and spare parts for the production process	For the life of the program	Their stay depends on the program remaining in force; IGI depends on the specific case
Goods transferred by pedimento between companies with a program (virtual operations)	Up to six months; eighteen if transferred by a domestic supplier without a program	Each transfer opens a new term worth putting on a calendar

The same article excludes goods listed in Annex I of the decree, which cannot be imported under the program unless the Ministry issues an agreement for contingencies. The list of tariff lines in that annex changes by decree, so check it before planning a purchase.

The operational key is each input’s deadline. Later export does not automatically waive IGI: article 14 of the decree refers to origin rules and applicable treaties, while article 15 sets exceptions. If goods are not returned or transferred to another regime on time, unbudgeted taxes and adjustments may follow. See our guide to the import pedimento and supplier payment.

VAT on temporary import and the SAT certification

VAT on a temporary import under IMMEX is not paid in cash if the company obtains SAT certification. Article 28-A of the VAT Law lets whoever brings goods into the temporary import regime for processing, transformation or repair in maquila or export programs apply a tax credit equal to 100% of the VAT that would be payable on import, creditable against the VAT on those activities.

The current Chamber of Deputies text lists 12 November 2021 as its latest amendment. The article sets four rules relevant to cash.

The first is certification: the SAT grants it to firms meeting its control requirements. The second is validity in the VAT and IEPS modality: one year, with renewal requested within thirty days before expiry, under SAT’s 2026 foreign trade rules, rules 7.1.6 and 7.2.3. The third is tax treatment: VAT covered by the credit cannot be credited again, and the credit is not taxable income. The fourth is the alternative: a company without certification may apply for a bond or letter of credit as its guarantee under rule 7.4.1.

What happens if the certification is lost?

If the company loses or fails to renew certification, it can no longer apply the 100% credit. For new imports, it needs an accepted bond or letter of credit, or it pays the VAT. Model this choice before expiry because it affects working capital.

The 2026 rules regulate VAT and IEPS certification at levels A, AA and AAA (rules 7.1.2 and 7.1.3). Article 28-A covers VAT; IEPS is governed by article 15-A of its own law. Requirements vary by level and must be checked before applying.

How much cash IMMEX frees: an illustrative scenario

Certification or a guarantee can avoid the import VAT cash outlay. The general VAT rate is 16% under article 1 of the VAT Law. This example assumes the VAT base equals customs value, with no IGI or other contributions; the actual base can be higher under article 27. All other numbers are assumptions, not official data or Soulbit prices.

Assumptions: a company imports inputs worth 1,500,000 USD a month. VAT is 240,000 USD a month. If it paid the tax at import and took 60 days to recover it, it would have 480,000 USD permanently tied up. At an assumed financing cost of 9% a year, that costs 43,200 USD a year. For the bond case, we assume 2,400,000 USD of coverage and a premium of 1.5% a year, or 36,000 USD. Table 2 compares the scenarios.

Scenario (amounts in USD, all assumptions)	VAT paid at import	Cash tied up	Assumed annual cost
IMMEX without certification or guarantee	240,000 a month	480,000	43,200 in financing
IMMEX without certification, with a bond	Zero	Depends on collateral	36,000 premium
IMMEX with SAT certification	Zero	Zero	Internal cost of meeting the requirements (not quantified)
IMMEX that loses certification without a guarantee	240,000 a month	480,000	43,200 in financing

The scenario shows an order of magnitude, not a forecast. In practice the recovery lag varies, the bond premium is set by the insurer and the cost of capital depends on each company. What matters is the structure: certification avoids a recurring cash lock-up, and losing it switches the lock-up back on at once.

Does IMMEX remove duty and VAT for good?

No. VAT is paid or covered by a tax credit or accepted guarantee. IGI can still be due under IMMEX, depending on origin, treaty and articles 14 and 15 of the decree. Use and stay periods create further obligations. Check Mexico’s tariffs on goods from China and Asia before budgeting.

Obligations, suspension and cancellation of the program

IMMEX obligations revolve around the annual report, inventory control and registered address. Article 25 of the decree requires an electronic annual report of prior year sales and exports by the last business day of May. Article 24, section IX, requires automated inventory control under SAT rules.

The consequence of failing is staged. If the report is not filed on time, the benefit of temporary import is suspended until the omission is fixed. If it is still missing on the last business day of August, the program is cancelled permanently from 1 September. Those dates come from the text consulted, and the Ministry publishes lists of suspended programs in the DOF.

Article 27 lists the grounds for cancellation. They include breach of any obligation in the decree and lacking documents that support operations or lawful stay of the goods, when the tax credit assessed exceeds 400,000 pesos or the unproven value exceeds 5% of the value imported temporarily in the prior half-year. They also include not being found at the tax address or at the addresses registered in the program, and filing false documents or documents with false data. The list is longer; read it in full in the decree.

For cash, suspension prevents new temporary imports under the program. After cancellation, pending goods need a case by case customs review: return, regime change or transfer where permitted. Article 27 provides a procedure before cancellation on its stated grounds. Treat the May report as a treasury date.

How should finance organize around these dates?

A calendar with four dates is enough to start: the annual report, the certification renewal, the expiry of each batch of inputs and the close of each transfer between programs. Assign an owner to each date and reconcile them against the inventory control kept by foreign trade.

Compliance cost and risks the CFO should budget

The cost of running IMMEX is mainly people and systems, and no official figure summarizes it. A company must sustain inventory control by program, reconcile temporary import against export balances, keep a file for each pedimento and manage its customs broker.

Estimate four costs with company data: foreign trade staff, inventory systems, a guarantee if there is no certification, and working capital tied up during temporary stays.

Key risks are an input whose term expires without a valid customs destination, inventory that does not reconcile with pedimentos, and an operation without supporting documents. Each can trigger payments, adjustments or suspension or cancellation proceedings; size the exposure with your customs broker.

Tables 1 and 2 give a simple budget base: term by type of good and cash by certification scenario. For the real decision, certify or bond, run the comparison with your actual operating figures.

What Soulbit V1 delivers and what it does not

Soulbit does not process the IMMEX program or SAT certification, and it does not handle filings with the Ministry of Economy. Those belong to the company and its customs broker. Soulbit also does not calculate import taxes or replace the accountant.

What V1 does deliver for an operation like this is B2B payments and collections with counterparties abroad. A company can hold USDC and USDT balances, pay suppliers abroad and collect from customers abroad in those stablecoins, convert by quote on an OTC exchange (eOTC) and work in fiat in USD, EUR and GBP. It can also issue payment links and collection QR codes. Custody is institutional with MPC and there is human support.

Soulbit's local bank rail covers Colombia only, not Mexico. A Mexican IMMEX company paying an input supplier abroad or collecting from a customer outside Mexico would use stablecoins and international fiat, not a Mexican local rail. We claim no price advantage over other payment methods, because no closed tariff exists.