Mexico’s 2026 Import Tariffs: How to Determine Whether Your Chinese Products Are Affected

Your Chinese product is affected by Mexico’s 2026 tariffs if its eight-digit fracción arancelaria is one of the 1,463 lines modified by the decree published in the Diario Oficial de la Federación on December 29, 2025, and the goods originate in a country that has no trade agreement with Mexico. That is the whole test. Everything else in this guide is about doing those two checks correctly, because most importers get at least one of them wrong.

The decree does not mention China anywhere. It lists tariff codes. A line that moved from 10% to 35% hits a Chinese kettle, an Indian kettle and a Korean kettle the same way. It does not hit a Japanese or Vietnamese kettle that qualifies under the CPTPP and arrives with valid proof of origin. So the question is never “is my product Chinese?” The question is “which code does it sit under, and what is its real origin?”

Both answers depend on the physical goods. The code depends on what the product is made of and how it works. The origin depends on where it was actually manufactured, not where the invoice was issued. A supplier can get both wrong by accident, and some get them wrong on purpose.

That is why a previo en origen, an inspection of the goods at the factory before they ship, has become part of tariff compliance rather than only quality control. An inspector who confirms the material, the function and the country of manufacture before loading gives your customs broker facts instead of a supplier’s description.

Here is how to run the check yourself, step by step, and where an origin inspection closes the gaps you cannot close from a desk in Mexico.

What actually changed on January 1, 2026?

Mexico raised the Impuesto General de Importación (IGI) on 1,463 fracciones arancelarias of the TIGIE, the tariff schedule attached to the Ley de los Impuestos Generales de Importación y de Exportación. The new rates run from 5% to 50%. Most of the affected lines now sit between 20% and 35%. The decree was published on December 29, 2025, took effect on January 1, 2026, and came with no transition period. A container that arrived on December 31 paid the old rate. The same container arriving on January 2 paid the new one.

The rates apply to goods originating in countries without a trade agreement in force with Mexico. In practice that means China, India, South Korea, Thailand, Indonesia, Taiwan, Turkey, Brazil and Russia, among others. Goods that qualify as originating under the USMCA, the CPTPP, the EU and EFTA agreements, or Mexico’s bilateral FTAs keep their preferential rate, provided the pedimento carries a valid proof of origin and the TL identifier.

The headline rates by product group, as published:

Most of the modified lines are inputs, not finished goods. Textiles, steel and auto parts alone account for close to 800 of the 1,463 lines. That matters if you import components for assembly in Mexico. Your finished product may be untouched while two of its parts moved to 35%.

The second decree: April 24, 2026

A separate decree published on April 23, 2026 set IGI rates of 5% to 35% on 185 further lines, in force from April 24, 2026. Most of these lines first went up under temporary decrees from 2024 that were due to expire on April 23, 2026. The April 2026 decree also covers some sectors for the first time, such as cosmetics and bicycles.

The largest of the 2024 decrees (April 22, 2024) covered 544 lines. The December 2025 reform had already absorbed 362 of them, and the April 2026 decree picked up more. Lines from the 2024 decrees that appear in neither text reverted to their earlier, lower rates. The April decree also amended the PROSEC decree so that certain steel inputs enter at 0% for the electrical, electronics, automotive and auto parts sectors.

So you now have two decrees to check, plus a set of lines that dropped back down. If your broker ran the check in January and told you a line was clear, ask whether they ran it again after April 24. Step 2 shows where to look.

Step 1: Which fracción arancelaria does your product actually fall under?

Start with the eight-digit Mexican code, not the six-digit HS code on your supplier’s invoice. The first six digits are international. The last two are Mexico’s own split, and the decree works at that level. Two products that share a six-digit heading can sit in different Mexican lines, one raised to 35% and the other untouched.

Since 2020 Mexico also adds a two-digit Número de Identificación Comercial (NICO) under each fracción. The NICO does not change the duty rate, but it has to be declared, and a wrong NICO is a flag for a customs review of the whole line.

Three things decide classification, in this order:

1. What the product is made of. A bag with a textile outer surface and a bag with a plastic sheeting outer surface classify under different headings in Chapter 42, and the 2026 rates for those headings differ.
2. What it does. A USB-powered desk fan and a mains-powered desk fan fall under different lines in heading 8414.
3. How it is presented. A knock-down furniture set shipped as a complete kit classifies as the finished item. The same components shipped separately as spare parts do not.

Your supplier’s HS code is a starting point, not an answer. Chinese exporters classify to China’s own national tariff, which opens subheadings differently from Mexico’s. At QCADVISOR we regularly see Chinese invoices carrying a code that is correct for China’s export declaration and wrong for the Mexican pedimento. Under Mexican customs law the importer answers for the classification, not the exporter and not the forwarder.

If you are unsure between two lines, Mexico’s customs authority issues binding classification rulings (consultas de clasificación arancelaria). A ruling can take weeks to a few months, so it only helps if you ask before production starts. For a product that sits on the boundary between a 10% line and a 35% line, that wait is cheap.

Step 2: Is that fracción on the list, and what is the new rate?

Once you have the eight-digit code, check it against the TIGIE as it stands today, not against a spreadsheet someone circulated in January. The reliable sources are the decree texts themselves on the DOF site (December 29, 2025 and April 23, 2026) and the SNICE tariff lookup run by the Secretaría de Economía, which shows the IGI currently in force for each line.

Read three things off the line:

• The general IGI. This is the rate for goods from non-FTA countries. For a Chinese product this is the number that counts.
• The rate on your entry date. The duty is set by the rate in force when the goods enter Mexico. For sea freight that is the date the vessel arrives at the first Mexican port, and your broker fixes it on the pedimento. It is not the date you placed the order. Goods ordered in November 2025 that arrived in January 2026 paid the new rate.
• Whether the line carries a non-tariff requirement. Many lines that went up also require a NOM compliance certificate, a permit, or an import padrón registration for that sector. The tariff and the NOM are separate failures with separate fines.

A quick way to size your exposure is to list every SKU you imported in 2025 with its fracción, then mark which ones appear in either decree. In our experience with Mexican importers of consumer goods, somewhere between a third and a half of a typical catalogue is touched, and the lines that moved most are not always the obvious ones. A plastic storage box at 25% surprises people more than a car at 50%.

One more thing to read: the decree gives the Secretaría de Economía discretion to create specific mechanisms for importing inputs from non-FTA countries where domestic supply is insufficient. That is not an automatic exemption. It has to be requested with evidence, and so far it has been used sparingly. Do not plan your 2026 margins around it.

Step 3: Where do the goods really originate?

The tariff turns on country of origin, not country of shipment, not the seller’s country, and not the port the container left from. A product made in Guangdong, invoiced by a Hong Kong trading company and loaded in Shenzhen is Chinese-origin. A product made in Guangdong, trucked to Haiphong, re-labelled and loaded in Vietnam is still Chinese-origin. Moving the goods does not move the origin.

This is where the Vietnam question comes up, because Vietnam is a CPTPP member and Mexican press coverage often lumps it in with China. The rule is simple. A product that genuinely qualifies as Vietnamese-originating under the CPTPP rules of origin, with a valid certification of origin and the TL identifier on the pedimento, pays the preferential rate. A Chinese product routed through Vietnam does not qualify and pays the full 2026 general rate. Declaring the second as the first is false origin.

The consequences of false origin are not administrative. Customs can apply an embargo precautorio on the goods, assess the omitted duties with surcharges, fine the importer at up to 150% of the omitted taxes, suspend the importer’s padrón registration, and refer the case for contrabando under the Código Fiscal de la Federación. The importer carries this, not the Chinese supplier who sold you the idea.

What the authority looks at when origin is challenged:

• The bill of lading chain and every transshipment point
• Whether the goods stayed under customs control in any third country
• Factory records, production dates and raw material invoices behind the certificate
• Whether the “substantial transformation” claimed in the third country actually happened, or whether the goods were repacked

For most Chinese consumer goods there is no origin question to answer. The product is Chinese, the general rate applies, and you budget for it. The risk sits with importers who have been offered a cheaper route. If a supplier proposes shipping your Chinese order “from our Vietnam facility” at the same price and lead time, the facility usually does not exist, or it exists as a warehouse. That is exactly the kind of claim a previo en origen is designed to test, by sending someone to the address on the certificate to see whether production is happening there.

Step 4: Are there anti-dumping duties stacked on top?

The 2026 IGI increase is one layer. Cuotas compensatorias, Mexico’s anti-dumping and countervailing duties, are a second layer that sits on top of it, and unlike the decree, these do name China. They are set by resolution of the Secretaría de Economía, product by product, after an investigation, and they are collected on the pedimento alongside the IGI.

The Chinese-origin products currently under cuotas compensatorias include steel products across many lines, certain chemicals, ceramic tiles, some textiles, and, since September 2025, footwear under a reference-price mechanism. For footwear the reference price is USD 22.58 per pair. Pairs declared below it pay a cuota of up to USD 22.50 per pair, calculated on the gap between your declared price and the reference. A low invoice price does not reduce the bill. It increases it.

Check your fracción against the current list of resolutions on the Secretaría de Economía’s site. A product can be clear of the December 2025 decree and still carry a 60% or higher anti-dumping duty, or the reverse.

Two details trip importers up here:

1. The declaration of origin is mandatory for goods subject to cuotas compensatorias. For non-FTA origin you transmit a signed declaration from the exporter or producer with the pedimento. Without it the duty is applied by default.
2. Anti-dumping duties are where origin fraud concentrates. A supplier who offers to ship Chinese steel fittings under a Malaysian or Taiwanese certificate is usually trying to get around a cuota compensatoria, not the general IGI. The penalties are the same as in Step 3, and the authority runs verification visits abroad for exactly these products.

Step 5: Does IMMEX or PROSEC change your exposure?

If you import to sell in Mexico, no. The increases apply in full to definitive imports, and that is most importers reading this. Skip to the worked example below.

If you import inputs to manufacture and export, the picture is different but not as clean as some brokers describe it.

IMMEX defers the IGI on temporary imports of inputs that will be transformed and exported. It does not cancel it. The deferral is capped by the rules of the trade agreement the finished product is exported under. For goods going to the United States, USMCA Article 2.5 (the successor to NAFTA’s Article 303) means you may still owe Mexican duty on non-originating Chinese inputs when the finished good crosses north. Any change of regime from temporary to definitive, any scrap sold locally, and any regularization of inventory shortfalls now triggers the 2026 rate, not the old one.

PROSEC gives a reduced or 0% IGI on specific inputs for specific sectors, regardless of origin. The April 23, 2026 decree amended Article 5 of the PROSEC decree so that certain steel inputs enter at 0% for the electrical, electronics, automotive and auto parts sectors. If your sector is on the PROSEC list and your inputs are on the amended annex, the January increase may not reach you. If your inputs are not on the annex, it does.

The Ley Aduanera reform published on November 19, 2025 also tightened IMMEX controls from January 1, 2026, with expanded documentation requirements and tighter digital tracking of temporary imports. Companies that treated IMMEX as a way to park Chinese goods and sell them locally are now the first targets of review. If your program is clean, the reform costs you some paperwork. If it is not, 2026 is the year it surfaces.

What does the increase do to your landed cost? A worked example

Take an order of 5,000 plastic household items at USD 10 each, customs value USD 50,000, on a line that moved from 15% to 35%. Three charges stack on the pedimento, and the order matters because the IVA is calculated on the value plus the IGI plus the DTA.

The cash outlay at the border rises by USD 11,600. The IVA is creditable for a registered Mexican business, so the real cost increase is the IGI difference: USD 10,000, or USD 2.00 per unit on a USD 10 product. If your gross margin on that item was 30%, the tariff alone took two thirds of it.

Now run the same table with a wrong classification. If the product was declared under a 15% line and customs reclassifies it to the 35% line during review, you owe the USD 10,000 difference plus surcharges and a fine calculated on the omitted tax. The fine is typically between 130% and 150% of the omitted amount. On this order that is USD 13,000 to 15,000 on top of the duty. The classification error cost more than the tariff did.

That is the practical reason to get the fracción right before the goods ship. A wrong code is cheap to fix on a pro forma invoice and expensive to fix on a pedimento.

Where does previo en origen fit into a tariff check?

Every step above rests on a fact about the physical goods: what they are made of, how they work, where they were made, how they are packed and labelled. You can verify none of those facts from Mexico. Your broker classifies from the documents the supplier sends. The supplier describes the product the way that gets the order signed. Nobody independent has looked at the carton until it is opened at the Mexican customs yard, and by then every error is yours.

A previo en origen puts an inspector in the factory before the goods ship, with your specification and your declared fracción in hand. For tariff purposes the inspection answers four questions the pedimento depends on:

1. Is the material what the classification says it is? A “100% cotton” garment that tests as a polyester blend moves to a different line. A “stainless steel” fitting that is zinc alloy moves lines and may pick up or drop a cuota compensatoria. We pull samples, check markings, and run the basic material tests the inspector can do on site. Anything that needs a lab goes to a lab.
2. Does the product match the declared function and presentation? If you declared finished goods and the factory packed subassemblies, the fracción is wrong. If you declared a kit and half the components are missing, the quantity is wrong and so is the duty.
3. Is this factory where the goods are actually made? The inspector visits the address on the certificate of origin and the invoice. A building with production lines, tooling for your product and workers on the line is a factory. A building with pallets and a shrink-wrap machine is a warehouse. We photograph both and tell you which one you have.
4. Do the labels, cartons and packing list match what the pedimento will say? Country-of-origin marking, NOM labelling, carton counts and net weights are checked against the shipping documents. Mismatches between the packing list and the physical count are the most common trigger for a customs review and, under the 2026 Ley Aduanera reform, for an embargo precautorio.

The inspection also records the defect picture under AQL sampling (ISO 2859-1 / ANSI/ASQ Z1.4, typically 0 critical / 2.5 major / 4.0 minor) and the factory signs the findings before the inspector leaves. That signed report is what you hand your broker, and what you keep if customs later questions the declaration. A supplier’s description is an assertion. An inspection report with photographs, measurements and a signature is evidence.

Two things an origin inspection does not do. It does not issue certificates of origin, which come from the exporting country’s chamber or authority. And it does not replace your customs broker’s classification opinion. It gives that opinion something solid to stand on.

If you want an independent record of material, origin and packing before you release the balance payment, that is what a QCADVISOR previo en origen gives you. Our inspectors are assigned by product category, never use factory-arranged transport, and report to you, not to the supplier.

Which mistakes do importers make most often when checking exposure?

Running the check once. Rates changed on January 1 and again on April 24. The Secretaría de Economía can publish further modifications, and cuotas compensatorias are added and renewed through the year. Re-run the check before each major order.

Ignoring inputs. Most of the modified lines are inputs. If you assemble in Mexico, the exposure is in your bill of materials, not your finished product code.

Confusing IVA with cost. The IVA on the pedimento rises with the IGI but comes back as a credit. The IGI does not. Compare the IGI line, not the total.

Lowering the invoice to offset the tariff. Under-declaring value to reduce an ad valorem duty is the oldest trick at the border and the most reliably caught. Mexico’s electronic Manifestación de Valor, filed through VUCEM, became mandatory in mid-2026 after two postponements, and the valuation data is now cross-checked against supplier records. On reference-price anti-dumping lines, a lower invoice raises the duty. On everything else, it raises the fine.

Treating the tariff as the only new cost. The same January 2026 reform package raised NOM non-compliance fines and tightened broker liability. A product that is correctly classified and correctly priced can still be held for a labelling defect that an inspection would have caught in the factory.

Frequently asked questions

Do Mexico’s 2026 tariffs apply only to China?

No. The December 29, 2025 decree lists 1,463 tariff lines, not countries. The new rates apply to goods originating in any country without a trade agreement in force with Mexico, which includes China, India, South Korea, Thailand, Indonesia, Taiwan, Turkey, Brazil and Russia. Goods qualifying under the USMCA, CPTPP or EU agreements keep their preferential rate.

How do I find out whether my product’s fracción was raised?

Take the eight-digit Mexican fracción arancelaria, not the six-digit HS code, and check it against the decrees of December 29, 2025 and April 23, 2026 on the DOF, or the SNICE tariff lookup, which shows the IGI currently in force. The rate that applies is the one in force when the goods enter Mexico.

Can I avoid the tariff by shipping Chinese goods through Vietnam?

No. Country of origin is where the goods were manufactured, not where they were shipped from. Chinese goods routed through Vietnam remain Chinese-origin and pay the full general rate. Declaring them as Vietnamese is false origin, punishable by embargo precautorio, fines of up to 150% of the omitted duty and criminal referral for contrabando.

Are the 2026 tariffs temporary?

Do not plan on it. The December 2025 increases were written into the LIGIE by Congress rather than imposed by temporary executive decree, and the 2026 federal budget counts the revenue. The April 2026 decree renewed lines that were due to expire rather than dropping them, which has been the pattern since 2024. Plan on the rates staying and re-check before each order.

What does a previo en origen check that matters for tariffs?

An origin inspection verifies the material composition, product function and presentation behind the declared fracción, confirms that the factory on the certificate of origin is a producing site, and checks that labels, carton counts and packing lists match the shipping documents. The factory signs the report, giving your broker verified facts rather than a supplier’s description.

Does IMMEX protect me from the 2026 increases?

Partly. IMMEX defers the IGI on temporary imports of inputs that will be exported, within the limits set by the destination country’s trade agreement. It does not help definitive imports, regime changes, locally sold scrap or inventory regularizations, all of which now pay the 2026 rate. PROSEC can reduce specific inputs to 0% if your sector and lines are on its annex.

What to do before your next order ships

The 2026 tariffs are not a reason to stop sourcing from China. They are a reason to know, to the eighth digit and to the factory address, what you are importing. Importers who ran the check properly in January absorbed a cost increase. Importers who guessed, or who took a supplier’s word for the code and the origin, are now paying the increase plus the penalties for getting it wrong.

The sequence is short:

1. List every SKU with its eight-digit fracción and NICO, confirmed by your broker rather than copied from the supplier.
2. Check each line against the December 29, 2025 and April 23, 2026 decrees and against the current cuotas compensatorias list.
3. Establish the true origin of each product and the documents that prove it. Treat any offer to “ship from a third country” as a red flag until you have seen the factory.
4. Recalculate landed cost on the IGI line, not the pedimento total, and reprice or re-source where the margin no longer holds.
5. Before each shipment, have the goods, the labels and the factory verified at origin so the pedimento is built on inspected facts.

The fifth step is where QCADVISOR comes in. A previo en origen in mainland China costs USD 280 per man-day, travel included, and gives you a signed, photographed record of material, function, origin and packing before the balance payment leaves your account. Measured against a reclassification fine of USD 13,000 to 15,000 on a USD 50,000 order, it is the cheapest line on the invoice. Book it through booking.qcadvisor.com once the order is confirmed, and we will coordinate the date and the factory address with your supplier directly.