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Your tariff is set by a schedule. Your cuota compensatoria is set by a case, and you were almost certainly not a party to it.
Every importer knows where to find a tariff. You classify the good, you read the rate, you plan around it. The rate sits in a published schedule and applies to everyone who brings that fracción arancelaria into the country.
A cuota compensatoria works nothing like that. It is the outcome of an administrative investigation into whether specific goods, from a specific origin, sold by specific exporters, were dumped or subsidized and caused injury to a Mexican industry. It arrives through the Diario Oficial de la Federación (Mexico's federal gazette), it can be several times the size of the tariff on the same good, and by the time it reaches your pedimento (Mexico's customs declaration) it is a single line item that looks like every other charge on the page.
The gap between how a cuota is decided and how it is experienced is where the cost lands. This walks the whole path, from investigation to line item to expiry.
It is not a tariff, and the difference is not semantic
Start with legal nature, because everything downstream follows from it.
A tariff is a contribución, one of the categories of federal revenue defined in Article 3 of the Código Fiscal de la Federación. It is a tax, established in the tariff schedule, applied to a classified good. A cuota compensatoria is something else. Article 63 of the Ley de Comercio Exterior states it directly: cuotas compensatorias are aprovechamientos, which that same Article 3 defines as public-law revenue that is not a contribución. Not a tax. A different class of federal revenue entirely.
That has three practical consequences. The collection path is its own: Article 65 assigns the collection of both provisional and definitive cuotas to the Secretaría de Hacienda y Crédito Público. The accounting treatment is not the tariff's treatment, which is a conversation your finance team should have before the first covered shipment, not after. And the instrument does not behave like a rate: it is not there to raise revenue or protect a schedule, it is there to offset a specific injury, which is why it can be revoked, revised, or allowed to expire in ways a tariff never is.
The framework sits inside Mexico's WTO commitments. Article 28 of the Ley de Comercio Exterior defines the unfair trade practice: importing goods under conditions of price discrimination or subsidization in the exporting country, whether of origin or provenance, causing injury to a domestic industry producing identical or similar goods under Article 39. That language tracks the WTO Antidumping Agreement, the agreement on the application of Article VI of the GATT 1994, and the Agreement on Subsidies and Countervailing Measures.
How the case runs, and the two dates that matter to you
Investigations are conducted by the Unidad de Prácticas Comerciales Internacionales (UPCI) of the Secretaría de Economía. The structure is fixed and the deadlines are in the statute.
It opens with a resolución de inicio, the notice that formally starts the investigation, published in the DOF. From the day after that publication, two clocks start.
The first runs 90 days. Under Article 57, within that period the Secretaría issues a resolución preliminar, which can do one of three things: impose a provisional cuota compensatoria, decline to impose one and continue the investigation, or conclude the investigation for lack of sufficient evidence of dumping, subsidy, injury, or the causal link between them.
The second runs 210 days. Under Article 59, within that period the Secretaría issues the resolución final, which can impose a definitive cuota, revoke the provisional one, or conclude without imposing anything. Both resolutions publish in the DOF.
Read those two numbers as your planning horizon. From the moment an initiation is published on a fracción arancelaria and origin you buy from, you have roughly three months before a provisional charge can attach, and roughly seven before the definitive one does. That is not a lot of time to requalify a supplier, but it is enough time to model the exposure and decide, which is the whole argument for monitoring initiations rather than waiting for finals.
Common mistake: treating the resolución de inicio as background noise because no charge attaches yet. The initiation is the only stage where you still have a free hand. Once a provisional cuota is in force, every decision you make is made under cost pressure.
How much, and why it depends on who shipped it
Article 62 sets the size. For price discrimination, the cuota is equivalent to the difference between the normal value and the export price. For subsidies, it is the amount of the benefit. The Secretaría may set it lower than the full margin, provided the amount is still sufficient to deter imports under unfair trade conditions.
Then comes the provision that most importer playbooks miss entirely.
Article 64 obliges the Secretaría to calculate individual margins of price discrimination or subsidization for those foreign producers that provide sufficient information to do so, and those individual margins are the basis for determining the cuotas compensatorias that apply to them. In practice, a resolution does not produce one number. It produces a schedule: named exporters or producers with their own rates, some of which can be low or zero, and a residual rate for everyone else.
So the cuota that attaches to your shipment is a function of three things, not two. The fracción arancelaria. The origin. And the identity of the producer or exporter that sold it to you.
A manufacturer had been importing a covered input for years at the individual rate of a named exporter, a rate low enough that the cuota was a rounding item in the landed cost model. Procurement changed suppliers within the same country, for reasons that had nothing to do with trade remedies and everything to do with lead times. The new supplier was not named in the resolution. The shipments landed at the residual rate. Nothing about the product, the classification or the origin had changed, and the charge per unit multiplied. The model that had been accurate for four years was wrong from one purchase order onward, and nobody in the chain that made the decision knew the resolution existed.
That is the failure mode. Not ignorance of trade remedies in general, but a supplier decision made by people who had no reason to know that the supplier's name was part of a customs determination.
How it lands on the pedimento
Once in force, the cuota stops being a case and becomes a field.
Cuotas compensatorias are declared on the pedimento through Apéndice 12 of Anexo 22 of the Reglas Generales de Comercio Exterior, the appendix titled Contribuciones, cuotas compensatorias, gravámenes y derechos. The instructivo, the official filling instructions for the pedimento, treats them alongside contributions in the liquidation blocks, which is exactly why they read as just another charge to anyone looking at the finished document.
Two precisions worth carrying. Depending on the resolution, the cuota is expressed either as a percentage applied to the customs value or as a specific amount per unit of measure. When it is ad valorem, it is computed on the customs value, which means your valuation method and the additions you make to the price feed directly into the size of the charge, and a value determination on a covered good compounds in both directions at once.
And the instructivo names medida de transición as a separate instrument that travels alongside cuotas compensatorias in the same fields. It is a safeguard, a different legal animal with a different origin and a different purpose. If your pedimento carries one, it did not come from an antidumping case, and the monitoring you need is not the same.
The five-year clock, and why it cuts both ways
This is the part of the topic that gets ignored because it looks like housekeeping, and it is the part with money in it.
Under Article 70 of the Ley de Comercio Exterior, definitive cuotas compensatorias are eliminated after five years counted from their entry into force, unless before that period ends the Secretaría has initiated one of two proceedings: an annual review, at the request of an interested party or on its own initiative, examining the dumping or subsidy and the injury; or an examen de vigencia, a sunset review conducted on its own initiative to determine whether removing the cuota would lead to the continuation or recurrence of the unfair practice. If neither has been started, the Secretaría must publish a notice in the DOF announcing the elimination.
Article 70-A adds the piece that makes this actionable: the Secretaría publishes a notice in the DOF about the upcoming expiration of a cuota's validity.
Read those two together and the monitoring obligation becomes concrete in both directions. A cuota you are paying may be approaching a date at which it disappears, and there is a published notice telling you so. An importer who is not reading those notices is either paying a charge that is about to lapse and not planning around it, or being surprised by a sunset review that keeps it alive for another cycle.
Quick check: for every cuota compensatoria your operation currently pays, write down the date it entered into force and add five years. If you cannot produce that date for each one, the monitoring is not happening, whatever the process document says.
If a resolution lands mid-supply
The scenario the topic exists for: goods on the water, or a supply program committed, when a provisional cuota attaches.
Article 65 sets the mechanics. The Secretaría de Hacienda y Crédito Público collects both provisional and definitive cuotas, and for provisional cuotas it may accept guarantees constituted under the Código Fiscal de la Federación. That is the pressure valve. Rather than paying a charge that may be revoked seven months later, the importer can guarantee it.
What happens next depends on the resolución final. If the final confirms the provisional cuota, payment is required, or failing that, the guarantees are enforced. If the final modifies or revokes it, the guarantees are cancelled or modified, or the amounts already paid are refunded with the corresponding interest.
So the practical sequence when an initiation touches your fracción arancelaria and origin is short. Confirm whether your specific producer or exporter is named in the proceeding, because that determines which rate you are looking at. Model the exposure at both the provisional and the residual rate, so the number exists before the decision has to be made. Decide with your customs broker whether to pay or to guarantee, knowing the refund-with-interest path exists. And put the two statutory dates, 90 and 210 days from the initiation, on the same calendar as your purchase commitments.
Across more than 190,000 customs operations a year at 39+ ports, the importers who absorb a trade-remedy case without disruption are not the ones with the best legal budget. They are the ones who knew the case existed while it was still an initiation, and who could answer, before anyone asked, which of their suppliers were named in it.
A tariff is a rate you can look up. A cuota compensatoria is a case you were not a party to, decided about goods you buy, that arrives as a line you have to pay. Knowing the case is the only version of control available.
Talk to a Joffroy expert about a trade-remedy exposure review of your covered tariff lines and suppliers.
TRADE. UNDER CONTROL.
