EU-Mercosur tariff cuts: how to actually qualify for them

The EU-Mercosur tariff cuts that have applied provisionally since 1 May 2026 are not automatic. Every preferential rate — machinery going into Mercosur, or Brazilian goods entering the EU at a reduced duty — depends on the product clearing the agreement's rules of origin, set out in Chapter 3 of the Interim Trade Agreement. The European Commission's April 2026 guidance on the subject confirms the mechanics are now settled, and for Brazilian exporters the practical answer is straightforward: two proof-of-origin routes are already usable, and which one applies is Brazil's choice, not the exporter's.

Qualifying as "originating" means one of three things: the product is wholly obtained in Brazil or the EU — grown, born, mined or caught there with nothing brought in from outside; it is manufactured entirely from originating materials; or it incorporates non-originating inputs but still clears the product-specific rule set for its tariff line in the agreement's Annex 3-B. That rule varies by product — a change in tariff classification for some, a defined manufacturing step for others (spinning yarn from fibre, say), a cap on the value of non-originating materials for others (a drone qualifies with up to 40% non-originating content). Cumulation only runs between the EU and Mercosur — an input sourced from China or the US does not become originating simply by passing through a Brazilian factory, unless the processing done there is substantial enough on its own. A general 10% tolerance on non-conforming inputs applies to most goods, with separate thresholds for textiles.

For getting goods across the border, Brazilian exporters currently have two valid instruments. The first is a self-issued statement on origin: a short declaration added to the invoice or another commercial document, no third party involved, valid for 12 months. It must carry the exporter's CNPJ regardless of shipment value — there is no exemption the way there is for EU exporters, who can skip registering in the EU's REX system below EUR 6,000. The second is a certificate of origin, a transitional instrument that must be signed by the exporter and additionally endorsed by an authorised chamber of commerce or government entity registered with ALADI. Brazil, unlike Paraguay, accepted both instruments from day one, so exporters can use whichever their buyer's customs broker is set up to process — though the certificate route is only guaranteed for three years, extendable to five, so it is worth building toward self-certification rather than treating the chamber-endorsed certificate as permanent.

None of this ends once the shipment clears customs. EU importers have up to two years to make a retrospective claim, and if EU authorities query it, a formal verification request to the Brazilian counterparts can take up to ten months to resolve. If the reply does not arrive, or does not hold up, the EU can deny the preference and raise a customs debt after the fact. Minor clerical slips — a wrong phone number, a typo in the consignee's name — are explicitly tolerated and will not sink a claim. An incorrect CNPJ or a product description that changes the tariff classification will. Both exporter and importer are required to keep the statement and its supporting evidence for at least three years.

The mistake worth avoiding is assuming the tariff schedule tells you what you need to know. It only tells you the rate if you qualify — whether a specific shipment does depends on the rule attached to its HS heading, which is why the Commission built a free self-assessment tool (ROSA, on its Access2Markets portal) to check origin product by product rather than by category. Given how much of the current conversation about Brazil-EU trade turns on these cuts, the origin paperwork is the part worth getting right before the first shipment, not after a customs query arrives. An Opportunity Scan can flag which proof-of-origin route fits your supply chain and where the documentation gap actually sits.