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TARIC commodity code, preferential origin and anti-dumping: how to pay the right customs duty with BTI, BOI, REX and EUR.1

Last updated 15 October 2026 · Reviewed by Jaime Piñeira Pardo, lawyer registered with the ICAM bar, no. 138826 · English version of our Spanish guide.

The short answer

The customs duty you pay depends on three factors: the TARIC commodity code of your goods, their origin, and the measures TARIC links to that code and country (anti-dumping, countervailing duties, safeguards, quotas). If the classification is unclear, a Binding Tariff Information (BTI, or IAV in Spain) fixes it for 3 years with no tasa (official fee). Preferential origin is proven via REX, approved exporter, or EUR.1, depending on the agreement. Managora prepares it for you.

We handle the whole procedure for you, from start to finish.

You describe your case in a chat and sign; we file it with the Spanish authorities. Fixed price from €299.00 (21% VAT included), plus the tasa (official fee) where there is one.

See the procedure

What is new, and the law that applies

  • 03-03-2026: the AEAT updates its REX webpage with the current list of trade agreements using the system.
  • 01-07-2026: the duty relief for consignments up to €150 is abolished and, until 1-7-2028, a flat-rate duty of €3 per category of items sharing the same tariff classification applies to distance sales (Regulation 2026/382). From 1-11-2026, a €2 handling fee is added.
  • 01-07-2026: Regulation (EU) 2026/1384 replaces the steel safeguard measure (duty-free tariff quotas and a 50% duty out of quota). From 1-10-2026, importers must prove the country of melt and pour (Implementing Regulation 2026/1963).
  • 18-09-2026: Implementing Regulation (EU) 2026/2089 amends the anti-dumping measure on Chinese fasteners, granting a new exporting producer the 39.6% cooperating rate.
  • 19-09-2026: the new Union Customs Code is published (Regulation 2026/2108), generally applicable from 21-9-2027; until then, BTI (IAV), BOI (IVO), and rules of origin continue to be governed by the 2013 Code.
  • February 2027: the anti-dumping measure on Chinese fasteners reaches its 5-year mark; it will remain in force if an expiry review is initiated, pending the outcome of that review.

How do you find the TARIC commodity code for a product?

The tariff heading or commodity code is the code for your goods in the European Union tariff, and it is built in layers: the first six digits are those of the Harmonized System, common to almost the entire world; the eight digits of the Combined Nomenclature (CN) are those of the Union; and the TARIC code adds two more with the subdivisions the Union uses to apply specific measures, such as an anti-dumping duty or a tariff quota.

Classifying is not just typing a word into a search engine. The General Rules for the Interpretation of the Nomenclature are applied in strict order: the wording of the headings and of the section and chapter notes governs (titles are for reference only); an unassembled article is classified as the finished article if it already has its essential character; between two headings, the more specific one wins, and in mixtures and sets, the component that gives the essential character prevails. To interpret these, you use the Explanatory Notes to the CN and the Harmonized System, Commission classification regulations, and judgments of the Court of Justice.

The tariff heading does not only determine the customs duty: all other Union measures on trade in goods are also applied according to classification. This includes certificates, licences, and, from 1 July 2026, the flat-rate duty of €3 on distance sales for consignments of up to €150, which is payable per category of items sharing the same tariff classification. A poorly chosen code drags everything else down with it.

The customs declaration is submitted by your company or a registered customs representative; we leave the tariff classification, the origin study, and the calculation of duties and VAT fully prepared for you. You can see the updated fee on our goods import study page.

How do you check customs duties, anti-dumping and requirements in TARIC?

TARIC is the European Commission's public database that brings together, for each code, everything that applies when importing and exporting. You search by commodity code and by country of origin, and it displays the normal duty, preferences under each trade agreement, anti-dumping, countervailing and safeguard duties, tariff quotas and suspensions, and required certificates. What counts is the country of origin, not the country where you bought the goods or the port of shipment.

For trade defence measures, the commodity code alone is not enough. The regulation imposing an anti-dumping duty describes the product concerned and sets an individual rate for each named manufacturer, another for cooperating companies, and a residual rate for all others. You must verify that your product matches that description and know who manufactured it.

The Commission creates TARIC codes for the product as soon as it opens an investigation, and the Central Economic-Administrative Court (Tribunal Económico-Administrativo Central) presumes that the importer is aware of the potential circumvention of an anti-dumping measure from the moment the notice of initiation of a review is published in the Official Journal of the European Union. If you import products subject to measures, someone needs to read the Official Journal for you.

What is Binding Tariff Information (BTI / IAV) and when should you apply for it?

Binding Tariff Information (BTI, or Información Arancelaria Vinculante, IAV, in Spain) is a customs decision, adopted only upon application by the interested party, that sets the tariff classification of your goods. In Spain, you apply for it under procedure DD02 of the AEAT (Agencia Estatal de Administración Tributaria, the Spanish Tax Agency), either online or at its offices, using the form in Annex 2 to Delegated Regulation (EU) 2016/341. It is submitted in the Member State where the applicant is established or where the BTI is to be used.

Customs has 30 days to accept the application and 120 days from acceptance to issue a decision, extendable by 30 days if notified in advance, and longer if laboratory analysis is required. There is no tasa: you can only be charged for the costs of analysing and returning samples.

A BTI is valid for 3 years from the date it takes effect (not 6, as under the old Community Customs Code). It binds only its holder, only for goods declared after it takes effect, and you must be able to prove that the declared goods correspond in every respect to those described in the decision. Each application covers a single product or a family of goods whose differences do not affect classification, and it is published in the Commission's database, excluding confidential data.

A BTI cannot be amended. It is annulled if it was based on incorrect or incomplete information from the applicant, and it is revoked if it ceases to be compatible with the explanatory notes, a judgment of the Court of Justice, or a Harmonized System classification opinion. If it ceases to be valid due to a classification regulation or is revoked, a grace period of up to 6 months may be granted for binding contracts already concluded, provided you apply within 30 days; this does not apply if the nomenclature itself changes.

It is worthwhile when a product sits between two headings with different duty rates or measures, when anti-dumping is at stake, or when import volumes are recurring. A binding tax ruling (consulta vinculante) to the Directorate-General for Taxation (Dirección General de Tributos) cannot be used for this: Spanish law refers customs matters to the Union Customs Code. Managora prepares the complete application and files it under your power of attorney; you can check the updated price on our Binding Tariff Information page.

What is the difference between non-preferential and preferential origin?

Non-preferential origin is the economic nationality of the goods: that of the country where they were wholly obtained or, if more than one country is involved, that of the country where they underwent their last substantial, economically justified processing or working, carried out in an undertaking equipped for that purpose and resulting in the manufacture of a new product or representing an important stage of manufacture. This is the origin used for normal customs duties, non-tariff measures, and anti-dumping. Relabelling or routing the shipment through another country does not change it.

Preferential origin is what entitles you to a reduced or zero duty rate under an EU trade agreement or a unilateral preference, such as the Generalised Scheme of Preferences (GSP). Its rules are set out in each agreement, product by product. Preferential treatment is not applied automatically: you must claim it on the customs declaration and hold valid proof of origin.

If the doubt concerns origin, the equivalent customs decision is Binding Origin Information (BOI, or Información Vinculante en materia de Origen, IVO): 120 days from acceptance, extendable by 30 days, with no tasa, valid for 3 years, and it can be requested by a direct representative holding a power of attorney.

REX, approved exporter, EUR.1 or EUR-MED: which proof of origin do you need?

It depends on the trade agreement with the destination country. Under the agreements with Canada (CETA), Japan, Vietnam, Singapore, the United Kingdom, and New Zealand, and under the Economic Partnership Agreements with Côte d'Ivoire, Ghana, and Eastern and Southern Africa, the EU exporter self-declares the origin on the invoice using their Registered Exporter (REX) number. With these countries, the EUR.1 certificate does not exist.

REX registration is requested via the AEAT online portal (procedure DC47) and is decided within 120 calendar days. Any exporter, manufacturer, trader, or re-consignor established in the Union who can prove the origin of the goods may apply, and it is a one-off formality: no certificate needs to be issued for each shipment. Unless the specific agreement provides otherwise, an exporter who is neither registered nor approved may only declare origin on consignments worth up to €6,000.

Approved exporter status (exportador autorizado) is a separate authorisation (procedure DC12) used for agreements where the proof of origin is an invoice declaration made out by an approved exporter, such as those with Morocco, Switzerland, Mexico, or South Korea. The value threshold above which it is required depends on each origin protocol.

Movement certificates EUR.1 and EUR-MED only exist under agreements that provide for them, such as those in the pan-Euro-Mediterranean zone, and are issued upon written application by the exporter or their authorised representative. In all cases, you must keep copies of the origin declarations and all supporting documents (bills of materials, costings, supplier's declarations) for at least 3 years; for a registered exporter, this period runs from the end of the calendar year in which the statement on origin was made out, and the specific agreement or national law may require a longer period.

The origin declaration is signed by the exporter, who bears full responsibility for it. Managora carries out the rules-of-origin analysis, drafts the exact wording for your invoice declaration, and prepares your REX or approved exporter applications ready for your company to sign.

What happens if customs reviews the commodity code or origin after clearance?

Customs can carry out post-clearance audits after the goods have been released. If they have reasonable doubts about the proof of origin, they may request any additional evidence and, if the preference is denied or the tariff classification was wrong, assess the difference in duty. That customs debt can be notified for up to 3 years from the date it was incurred, a time limit that extends to between 5 and 10 years if the customs debt was incurred as the result of an act which, at the time it was committed, was liable to give rise to criminal court proceedings.

A good-faith importer has specific legal protection: if the certificate of origin issued by the authorities of the exporting country turns out to be incorrect, this is treated as an error by the competent authorities that the importer could not reasonably have detected, and you can apply for repayment or remission of the duty. This protection does not apply if the certificate was based on an incorrect account of the facts provided by the exporter, nor if the Commission had already published a notice in the Official Journal stating that there were well-founded doubts regarding that country, and you must demonstrate that you took all necessary steps to ensure the conditions were met.

Against a post-clearance tax assessment (liquidación), you may file an administrative appeal for reconsideration (recurso de reposición) or an economic-administrative claim (reclamación económico-administrativa) within one month of notification. Repayment or remission on grounds of an error by the competent authorities, overcharged duties, or equity must be requested within 3 years of notification of the customs debt. Our registered Spanish lawyer files this under your power of attorney; you can view the updated fee on our import duty repayment or remission page.

If there was concealment or misrepresentation, it may constitute smuggling (contrabando): a criminal offence from €150,000 upwards (€50,000 for dual-use goods, defence material, CITES specimens, drug precursors, historical heritage, and state-monopoly or prohibited goods; €15,000 for manufactured tobacco; with no financial threshold for drugs and weapons). Below those thresholds, it is an administrative offence carrying a fine of 100% to 350% of the value of the goods (up to 600% for tobacco) plus confiscation of the goods. Managora does not handle criminal defence.

How do anti-dumping, countervailing duties and safeguards work?

Anti-dumping duties tax imports sold below their normal value; countervailing duties offset subsidies granted by the country of origin; and safeguard measures curb a sudden surge in imports, for example through tariff quotas. They are charged on top of the normal customs duty, although no product may be subjected to both anti-dumping and countervailing duties for the purpose of dealing with one and the same situation.

Provisional anti-dumping duties are not paid at the time of clearance: they are secured by a guarantee, and if the definitive duty turns out to be higher, the difference is not collected. Definitive duties expire after 5 years, unless an expiry review extends them, and while that review is pending they remain in force.

Three examples in force as of October 2026 (full details in the table below): Chinese iron or steel fasteners, ranging from 22.1% to 86.5% depending on the manufacturer; Chinese battery electric vehicles, subject to definitive countervailing duties since 30 October 2024; and steel products, which from 1 July 2026 are subject to duty-free tariff quotas with a 50% out-of-quota duty, plus mandatory proof of the country of melt and pour from 1 October.

Attempting to bypass these measures usually proves expensive. Anti-dumping duties can be extended to slightly modified products designed to fall under a different tariff code, to consignments transhipped through third countries, and to assembly operations in the Union or a third country where parts from the country subject to measures constitute 60% or more of the total value of the parts of the assembled product and the value added during assembly is not greater than 25% of the manufacturing cost.

What are tariff suspensions and quotas, and how do you claim them?

An autonomous tariff suspension is a European Union measure that temporarily reduces or eliminates the normal customs duty on certain goods, typically raw materials, semi-finished goods, or components not produced in the Union. A tariff quota grants that reduced or zero rate only up to a set volume: as soon as the quota is exhausted, imports revert to the normal duty rate. Both appear in TARIC with their respective codes and conditions.

Neither is applied automatically. The Union Customs Code states that these favourable tariff measures apply only upon application by the declarant, meaning you must claim them on the customs declaration using the correct code and meet all attached conditions; if you do not claim them, you pay the normal duty. For tariff quotas, moreover, the available balance is drawn down as imports are cleared, so the exact timing of customs clearance matters.

If you import a component or raw material that is not manufactured in the Union and does not yet benefit from a suspension, your company can apply for a new suspension through the Spanish Ministry of Economy, Trade and Enterprise (Ministerio de Economía, Comercio y Empresa), which forwards the request to the European Commission. Managora prepares the technical dossier ready for your company to sign, as the applicant remains responsible for the accuracy of the data.

Step by step

  1. 1

    Gather the technical specifications of the product(Before confirming the purchase order)

    Composition, function, intended use, photographs, manufacturer details, and the country of last substantial transformation.

  2. 2

    Classify the goods using the General Rules and explanatory notes(Before requesting freight quotes)

    Determine the heading, subheading, CN code, and TARIC code. Check published BTIs for similar products as well.

  3. 3

    Check TARIC using the commodity code and country of origin(Before signing the supply contract)

    Verify the normal duty rate, preferential rates, anti-dumping duties (including your specific manufacturer's rate), quotas, suspensions, and required certificates.

  4. 4

    Apply for a BTI (IAV) if the classification is uncertain(30 days for acceptance and 120 days for decision)

    AEAT procedure DD02, with no tasa. Valid for 3 years and binding only on the holder.

  5. 5

    Confirm the origin and the proof required under the trade agreement(REX: 120 calendar days)

    REX (DC47), approved exporter (DC12), or EUR.1 / EUR-MED, depending on the partner country. If in doubt, apply for a BOI (IVO).

  6. 6

    Hand the customs file over to the declarant(Before the goods arrive)

    The declaration is lodged by your company or a registered customs representative. Provide them with the TARIC code, proof of origin, claim for preference or quota, and duty/VAT calculation, and review the clearance assessment.

  7. 7

    If you receive a post-clearance assessment, act within the statutory deadline(One month to appeal)

    File an administrative appeal or economic-administrative claim within one month; apply for repayment or remission within 3 years of notification. Keep all origin supporting documents for at least 3 years.

A worked example

A company imports steel screws from China subject to anti-dumping duties (Regulation 2022/191) worth €20,000. It compares a manufacturer with an individual duty rate of 22.1% against another without its own rate (residual rate of 86.5%). Normal customs duty and other costs are identical in both cases and are left out of the comparison. Import VAT is 21%.

  • Anti-dumping duty with the manufacturer without an individual rate: €20,000 x 86.5% = €17,300.
  • Anti-dumping duty with the manufacturer holding an individual rate: €20,000 x 22.1% = €4,420.
  • Difference in anti-dumping duty: €17,300 - €4,420 = €12,880.
  • Anti-dumping duty forms part of the taxable base for import VAT: €12,880 x 21% = €2,704.80 more in VAT with the first supplier.
  • That import VAT is deductible if your company is entitled to full VAT recovery (and can be accounted for via postponed VAT accounting on modelo 303 if you file monthly VAT returns and have opted into the deferral scheme); the anti-dumping duty, however, is a non-recoverable cost.

Choosing the manufacturer without an individual rate costs €12,880 more in non-recoverable anti-dumping duty on every €20,000 shipment, and requires advancing €2,704.80 more in import VAT. That is why you must verify the manufacturer's TARIC additional code and the product description before signing the purchase order, not when the goods arrive at customs.

Decisions and authorisations to secure tariff classification and origin

ProcedureWhere to applyTimeframeTasa (official fee)Who signs
Binding Tariff Information (BTI / IAV)AEAT, procedure DD0230 days to accept and 120 to decide (plus 30 with notice, and longer if lab testing is needed)No tasa; sample analysis costs may be chargedThe applicant or their authorised representative
Binding Origin Information (BOI / IVO)AEAT (IVO guidelines)120 days from acceptance, extendable by 30No tasaThe applicant or their direct representative with power of attorney
Registered Exporter (REX)AEAT, procedure DC47120 calendar daysNo tasaThe exporter
Approved exporter for origin purposesAEAT, procedure DC12According to applicable regulationsNo tasaThe exporter
Administrative appeal (recurso de reposición) or economic-administrative claimAEAT or Economic-Administrative CourtOne month from notificationNo tasaThe debtor or their representative
Repayment or remission (error, overcharge, or equity)AEATApply within 3 years from notification of the debtNo tasaThe debtor or their representative

Examples of trade defence measures in force as of 15 October 2026

Product and originMeasureRegulationDuty ratesKey points to note
Iron or steel fasteners, ChinaDefinitive anti-dumping dutyImplementing Regulation (EU) 2022/191, as amended by 2026/208922.1% to 48.8% depending on manufacturer; 39.6% cooperating companies; 86.5% all othersReaches 5 years in February 2027, unless extended via an expiry review
Battery electric vehicles, ChinaDefinitive countervailing duty since 30-10-2024Implementing Regulation (EU) 2024/2754BYD 17.0%; SAIC 35.3%; non-cooperating companies 35.3%Charged in addition to the normal customs duty
Steel products, all origins except EEATariff quotas with out-of-quota duty, from 1-7-2026Regulation (EU) 2026/13840% within quota; 50% out of quotaProof of country of melt and pour required from 1-10-2026 (Implementing Regulation 2026/1963)

BTI (IAV) vs BOI (IVO): which binding decision to request

BTI / IAV (tariff classification)BOI / IVO (origin)
What it fixesThe tariff classification of the goodsThe origin, whether preferential or non-preferential
Where to applyAEAT, procedure DD02, online or in personAEAT; submission channel to be confirmed upon filing
Timeframe30 days to accept and 120 to decide, extendable120 days from acceptance, extendable by 30
Tasa (official fee)None (except sample laboratory analysis)None
Validity3 years, binding only on the holder3 years, binding only on the holder
Grace period for binding contractsUp to 6 months if invalidated by a classification regulation or revoked; not if the nomenclature changesUp to 6 months, except for exported goods

Official forms and where it is filed

Frequently asked questions

My Chinese supplier holds a BTI (IAV) for the product. Can I use it?

No. A BTI (IAV) is legally binding only on its named holder. It gives you a useful indication of how customs classifies that product, but for legal certainty you need a BTI issued in your own name.

Customs has already reclassified my goods. Should I apply for a BTI now?

A BTI only applies to goods declared after the decision takes effect. Against the tax assessment you have already received, you have one month to file an appeal, while a new BTI will protect your future imports.

I export to the United Kingdom. Do I need an EUR.1 certificate?

No. Under the EU-UK agreement, origin is declared directly on the invoice; for consignments worth more than €6,000, the exporter must be registered in the REX system.

My supplier's certificate of origin turned out to be invalid. Do I have to pay the duty difference?

Customs can assess the duty, but if the certificate was issued by the authorities of the exporting country and you acted in good faith, you can apply for repayment or remission, unless the certificate was based on false facts provided by the exporter or the European Commission had published a notice warning of doubts regarding that country.

How far back can customs claim unpaid import duties from me?

3 years from the date the customs debt was incurred; between 5 and 10 years if the facts could give rise to criminal proceedings.

Can I avoid anti-dumping duties by assembling or shipping the product from a third country?

That constitutes circumvention: the European Commission can extend the anti-dumping duty to such transhipments and assembly operations, and the importer is presumed to be aware of it from the date the notice initiating the review is published in the Official Journal.

We handle the whole procedure for you, from start to finish.

You describe your case in a chat and sign; we file it with the Spanish authorities. Fixed price from €299.00 (21% VAT included), plus the tasa (official fee) where there is one.

See the procedure

Related procedures

The price, the tasa (official fee) and the current deadlines are on each procedure page.

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