What happens when a foreign exporter fails to cooperate with a Turkish Customs origin verification request? Learn the risks of losing preferential tariff treatment, additional customs duties, penalties and importer defenses in Turkey.

A Turkish importer may successfully clear goods using a EUR.1 certificate, origin declaration or another applicable proof of origin, only to receive a Customs inquiry months or even years later.

Turkish Customs may initiate subsequent verification when it questions the authenticity of an origin document, the originating status of the goods or compliance with the relevant origin rules.

A particularly difficult situation arises when the foreign exporter does not cooperate.

The exporter may:

• Ignore verification correspondence;
• Fail to provide production records;
• Have closed its business;
• Refuse to disclose its bill of materials;
• Lose historical supplier records;
• Provide an incomplete response;
• Respond after the applicable verification period.

For the Turkish importer, silence abroad can create substantial customs exposure even though the importer may have possessed apparently valid origin documentation when the goods entered Turkey.

1. What Is Subsequent Origin Verification?

Subsequent verification is a mechanism through which Customs checks origin evidence after it has been issued or used.

The Ministry of Trade explains that documents such as EUR.1 certificates, invoice declarations, Form A documents and certificates of origin may be sent for verification when the importing customs authority doubts their accuracy or compliance with applicable rules.

The precise verification procedure depends on the applicable trade agreement and origin regime.

2. Who Normally Receives the Verification Request?

Depending on the applicable framework, Turkish Customs may communicate with the competent customs or administrative authority of the exporting country.

That foreign authority may then need information from the exporter.

The exporter may be asked to substantiate:

• Manufacturing operations;
• Raw materials;
• Component origins;
• Supplier declarations;
• Bills of materials;
• Origin calculations;
• Cumulation;
• Export documentation.

Failure at this stage can ultimately affect the Turkish importer.

3. Exporter Silence Can Put Preferential Treatment at Risk

The fundamental problem is evidentiary.

If preferential customs treatment was granted because the goods qualified as originating products, Customs must be able to verify that qualification under the applicable agreement.

If verification cannot establish originating status, preferential treatment may be denied under the particular origin regime.

The exact consequence and verification period must therefore be determined from the agreement applicable to the shipment rather than from a single universal rule.

4. Do Not Assume the Same Deadline Applies to Every Agreement

Turkey has multiple preferential trade arrangements.

The verification provisions can differ regarding:

• Competent authority;
• Verification method;
• Response period;
• Reasonable-doubt standard;
• Consequences of no response;
• Possibility of further inquiries.

Accordingly, never assume that a deadline found in one free trade agreement automatically applies to another.

5. First Identify the Legal Basis for the Preference

When an investigation begins, identify:

Exporting country

→ date of export

→ product

→ origin proof

→ trade agreement

→ origin protocol applicable on that date.

Only then can the consequences of non-response be determined correctly.

6. A Valid-Looking EUR.1 May Not Be Enough

A EUR.1 certificate may appear completely regular on its face.

However, subsequent verification can investigate whether the goods actually satisfied the underlying preferential origin rules.

Therefore:

document authenticity

and

substantive originating status

are separate issues.

7. Exporter Non-Cooperation Does Not Necessarily Mean Fraud

This distinction is extremely important.

A supplier may fail to respond because:

• Records are archived;
• Personnel changed;
• The company was acquired;
• The factory closed;
• Documents were lost;
• The exporter misunderstood the request.

Non-response should not automatically be equated with deliberate origin fraud.

8. But Customs May Still Deny the Preference

Even without fraud, Customs may conclude that preferential origin has not been sufficiently verified.

This can lead to recalculation of customs duties without the preferential tariff treatment originally claimed.

The financial exposure can therefore arise independently of any allegation of intentional misconduct.

9. The Turkish Importer Should Not Remain Passive

A dangerous response is:

“The request was sent abroad, so there is nothing we can do.”

The importer should immediately contact:

• Exporter;
• Manufacturer;
• Foreign customs adviser;
• Relevant group company;
• Supplier’s legal department.

The objective is to ensure that the verification process is completed with adequate evidence.

10. Ask the Exporter Exactly What Happened

Determine whether the exporter:

never received the request

received but ignored it

responded incompletely

sent documents to the wrong authority

or

responded after the requested period.

These scenarios should not automatically be treated as identical.

11. Obtain a Copy of the Verification Correspondence

Where procedurally available, determine:

• Date request was sent;
• Recipient authority;
• Product concerned;
• Document concerned;
• Questions asked;
• Whether reminders were sent;
• Whether any response was received.

This chronology can become crucial.

12. Contact the Foreign Competent Authority Where Appropriate

The exporter may need to coordinate with its own country’s competent customs or origin authority.

The Turkish importer should encourage the exporter to determine whether a delayed or supplementary response remains procedurally possible under the applicable regime.

13. Reconstruct the Origin File Independently

Do not rely exclusively on the original certificate.

Build the underlying evidentiary file.

Collect:

• Bill of materials;
• Component invoices;
• Supplier declarations;
• Production records;
• Factory records;
• Cost calculations;
• Product classification;
• Origin calculation.

This may help explain the substantive origin position.

14. Identify the Product-Specific Origin Rule

A supplier’s statement that:

“The goods were manufactured here.”

may be insufficient.

Determine the precise rule applicable to the product.

Depending on the regime, it may involve:

• Tariff-heading change;
• Maximum non-originating material threshold;
• Minimum value addition;
• Specific manufacturing operation;
• Wholly obtained status.

15. Verify Tariff Classification

The origin rule may depend directly on the HS classification.

If the exporter used one classification while Turkish Customs uses another, the parties may be applying different origin rules.

Classification should therefore be checked before defending origin.

16. Prepare a Bill of Materials Analysis

For manufactured goods, prepare a table identifying:

Component

HS classification

Supplier

Country of origin

Value

Origin evidence.

Then apply the product-specific rule.

17. Check Supplier Declarations

The exporter may itself depend on declarations from upstream suppliers.

Verify:

• Issuing supplier;
• Relevant product;
• Validity period;
• Origin claimed;
• Relevant production period.

A supplier declaration created for current production may not necessarily establish historical origin.

18. Cumulation Can Be Critical

The exporter may have obtained preferential origin through cumulation.

If so, identify:

• Countries involved;
• Materials concerned;
• Applicable rule set;
• Supporting documents;
• Cumulation statement requirements.

In 2026, this requires particular care because the revised Pan-Euro-Mediterranean framework has been implemented through country- and agreement-specific arrangements.

19. Use the Rule Applicable on the Historical Export Date

Do not analyze a 2024 shipment using only the rules applicable in September 2026.

Likewise, do not automatically apply an older PEM rule to a 2026 transaction.

The applicable legal framework must be identified for each export period.

20. A.TR Is Not the Same as Proof of Origin

Where EU trade is involved, companies should avoid confusing an A.TR document with an origin certificate.

The Ministry expressly explains that A.TR demonstrates free-circulation status, while EUR.1 is used to prove origin under the relevant preferential arrangements.

This distinction can become critical in an origin investigation.

21. What Happens to Customs Duty?

If preferential origin cannot ultimately be established, Turkish Customs may seek the difference between:

preferential customs duty originally applied

and

the customs duty legally applicable without that preference.

For repeated imports, the cumulative amount can be substantial.

22. Additional Customs Duty May Also Need Review

Origin can affect more than ordinary customs duty.

Depending on the product and applicable measures, the investigation may affect:

• Additional customs duty;
• Trade-defense measures;
• Safeguards;
• Other origin-dependent charges.

The exposure should therefore be calculated declaration by declaration.

23. One Exporter Can Create Hundreds of Affected Declarations

If a Turkish importer purchased the same products from the exporter for several years, one unsuccessful verification may prompt Customs to examine a much larger population of declarations.

Immediately prepare a historical import matrix.

24. Do Not Assume Every Declaration Is Identical

Separate imports according to:

• Product;
• Exporter;
• Manufacturer;
• Factory;
• Origin proof;
• Production period;
• Origin rule.

Production structures can change over time.

25. Manufacturer and Exporter May Be Different Companies

Sometimes the exporter is merely a trading company.

The actual manufacturer may possess the evidence needed to establish origin.

If the exporter is unresponsive, determine whether records can be obtained directly from the manufacturer through appropriate channels.

26. The Exporter May Have Gone Out of Business

This is particularly difficult.

Potential evidence may still exist with:

• Manufacturer;
• Former parent company;
• Successor company;
• Chamber;
• Customs authority;
• Upstream suppliers.

Do not immediately assume the origin claim is impossible to substantiate.

27. What If the Exporter Responds Late?

A late response should be analyzed under the specific agreement.

Questions include:

• Has the applicable verification period expired?
• Does the agreement permit supplementary information?
• Was an initial response provided?
• Did the foreign authority request more time?
• Has Turkish Customs already issued an assessment?

Do not assume that every late response must automatically be ignored.

28. What If the Response Is Incomplete?

Incomplete verification may create the same practical risk as no response if it fails to answer the substantive origin question.

The importer should identify precisely what information is missing and determine whether supplementary evidence can be obtained.

29. What If the Foreign Authority Confirms Only Document Authenticity?

A response stating:

“The EUR.1 was genuinely issued”

may not necessarily answer:

“Did the goods actually satisfy the applicable origin rule?”

Read the verification result carefully.

30. Importer Evidence Can Still Matter

Depending on the applicable agreement and procedure, evidence held by the Turkish importer may be relevant.

Indeed, Turkey’s 2025 amendment concerning the Malaysia free trade agreement expressly expanded origin verification possibilities so information and documents could also be requested from importers.

This demonstrates why the exact agreement matters.

31. Do Not Alter Historical Documents

Never manufacture retrospective documents to fill evidentiary gaps.

Later explanations may be prepared, but they should be accurately identified as such and supported by genuine underlying records.

Document credibility is essential.

32. Additional Duty and Penalty Must Be Separated

Even if Customs concludes that preferential treatment cannot be maintained, the penalty analysis should be conducted separately.

Important facts may include:

• Importer possessed apparently valid documentation;
• Exporter provided the origin proof;
• Importer had no knowledge of an underlying problem;
• Exporter later failed to cooperate;
• Dispute concerns technical interpretation of an origin rule.

These facts should be preserved.

33. Exporter Silence Does Not Automatically Establish Importer Intent

Failure by a foreign exporter to answer a verification request does not by itself prove that the Turkish importer knowingly made a false origin declaration.

Where penalties are imposed, the precise statutory basis and factual findings should therefore be reviewed carefully.

34. Fraud Allegations Require Immediate Action

The situation becomes more serious if Customs believes:

• Certificate was forged;
• Exporter never manufactured the goods;
• Origin was deliberately disguised;
• Goods were transshipped to avoid trade measures.

Immediately preserve communications and investigate the supply chain.

35. Review the Turkish Importer’s Due Diligence

Evidence of importer diligence may include:

• Supplier questionnaires;
• Origin warranties;
• Previous verified certificates;
• Factory information;
• Supplier declarations;
• Compliance audits.

These materials can become important when responding to allegations concerning importer conduct.

36. Review the Supply Agreement

The commercial contract should be checked for:

• Origin warranties;
• Preferential eligibility warranties;
• Documentation obligations;
• Audit cooperation;
• Record retention;
• Indemnification.

The exporter may have breached contractual obligations by refusing to cooperate.

37. Send a Formal Notice to the Exporter

Where significant customs exposure exists, notify the foreign exporter promptly.

The notice should preserve rights concerning:

• Additional customs duties;
• Penalties;
• Interest or late-payment amounts;
• Professional expenses;
• Other contractual losses where recoverable.

Do not allow contractual limitation periods to expire while waiting for the customs proceeding.

38. Customs Defense and Supplier Claim Should Run in Parallel

Two different legal relationships exist:

Turkish Customs ↔ Turkish importer

and

Turkish importer ↔ foreign supplier.

Winning or losing one does not automatically determine the other.

Manage both simultaneously.

39. Review Historical Exposure Before Making Admissions

Before telling Customs that the issue affected “all previous imports,” identify the true population.

The supplier may have:

• Changed factories;
• Changed component suppliers;
• Changed origin methodology;
• Changed product models.

Historical exposure should be evidence-based.

40. Protect Formal Challenge Deadlines

If Turkish Customs issues:

• Additional assessment;
• Penalty decision;
• Other appealable administrative act,

record the notification date immediately.

Do not allow continuing discussions with the exporter to cause a Turkish procedural deadline to expire.

41. Future Imports Need Immediate Attention

If the same exporter continues shipping goods while refusing to cooperate with verification, the importer should reconsider relying automatically on the same preferential-origin evidence.

Future exposure can otherwise continue growing.

42. Strengthen Origin Clauses in New Contracts

Foreign suppliers should be required to:

• Maintain origin records;
• Respond to verification requests;
• Cooperate with competent authorities;
• Provide bills of materials where legally appropriate;
• Notify production changes;
• Preserve records for the required period.

43. Include an Origin Indemnity Where Appropriate

For high-value preferential imports, contracts can allocate financial risk arising from incorrect supplier origin representations.

The drafting should address not only customs duty but potentially:

• Additional duties;
• Penalties;
• Late-payment consequences;
• Reasonable defense costs.

44. Establish Annual Origin Verification

Do not wait for Customs.

For significant preferential suppliers, periodically verify:

factory

→ materials

→ origin rule

→ supplier declarations

→ origin calculation

→ origin proof.

This can identify problems before they become historical customs exposure.

45. Immediate Action Plan When the Exporter Does Not Respond

When a foreign exporter fails to answer an origin verification request:

Identify the applicable agreement

→ confirm the verification timeline

→ contact the exporter immediately

→ contact the manufacturer where appropriate

→ determine whether the request was actually received

→ collect underlying production evidence

→ verify tariff classification

→ apply the correct origin rule

→ review supplier declarations

→ review cumulation

→ prepare an independent origin calculation

→ identify affected declarations

→ calculate potential customs exposure

→ analyze penalties separately

→ preserve objections and supplier claims.

25-Point Origin Verification Non-Response Checklist

1. Customs declaration.
2. Export date.
3. Exporting country.
4. Applicable trade agreement.
5. Origin proof.
6. Verification request.
7. Date request was sent.
8. Foreign competent authority.
9. Exporter.
10. Manufacturer.
11. Tariff classification.
12. Product-specific origin rule.
13. Bill of materials.
14. Component origins.
15. Supplier declarations.
16. Production records.
17. Origin calculation.
18. Cumulation.
19. Foreign authority response.
20. Reason for non-response.
21. Historical declarations.
22. Potential additional duties.
23. Penalty exposure.
24. Supplier indemnity.
25. Turkish objection deadlines.

Frequently Asked Questions

1. What happens if a foreign exporter ignores an origin verification request?

The consequences depend on the applicable origin agreement, but failure to obtain satisfactory verification can put preferential tariff treatment at risk.

2. Does non-response automatically prove that the certificate was fraudulent?

No. Failure to respond and document fraud are different issues. The reason for the non-response and the underlying origin evidence should be investigated separately.

3. Can Turkey recover customs duty from the Turkish importer?

If the preferential treatment cannot be maintained, Customs may seek additional amounts from the importer according to the applicable customs framework.

4. Can the Turkish importer provide its own evidence?

Potentially, depending on the applicable regime. Importer-held documentation should therefore be preserved rather than assuming that only the exporter can provide relevant evidence. Some origin frameworks expressly allow information to be requested from the importer.

5. What if the exporter answers after the verification deadline?

The legal effect depends on the particular trade agreement and procedural circumstances. The relevant agreement must be reviewed before concluding that the late response is either automatically acceptable or automatically ineffective.

6. What if the exporter has closed its business?

Evidence may potentially be reconstructed through the manufacturer, successor company, competent authority, upstream suppliers and historical commercial records.

7. Can Customs investigate other imports from the same exporter?

Yes. If the same origin issue potentially affects other declarations, Customs may expand its review. Turkey continues active secondary and post-clearance controls of historical transactions.

8. Can the importer claim the additional customs cost from the foreign exporter?

Potentially, depending on the supply contract, origin warranties, indemnity clauses, governing law and facts surrounding the incorrect or unsupported origin representation.

9. Are 2026 origin rules identical across all Turkey’s preferential arrangements?

No. This is particularly important within the revised PEM framework, where implementation and cumulation possibilities must be checked by country, agreement and relevant date.

10. What should the importer do first?

Do not simply wait for Customs to receive a foreign response. Immediately identify the applicable origin rule and reconstruct the substantive origin evidence while simultaneously pushing the exporter and relevant foreign authority to complete the verification process.

Client-Focused Legal Support for Origin Verification Disputes in Turkey

Origin verification disputes may involve:

Unresponsive foreign exporters

EUR.1 verification

Origin declarations

Supplier declarations

Preferential customs duties

Cumulation

Post-clearance investigations

Additional customs assessments

and administrative penalties.

Fırat Fesih Kaya Law Office assists foreign manufacturers, international companies and Turkish importers where an exporter fails to cooperate with a Turkish Customs origin verification procedure.

Lawyer Fırat Fesih Kaya provides legal assistance in reconstructing origin evidence, reviewing product-specific origin rules, coordinating documentation from foreign manufacturers, analyzing historical imports, challenging additional customs assessments and penalties, and preserving contractual claims against foreign suppliers.

Phone: +90 312 434 22 22
Mobile: +90 532 769 22 22
Email: info@firatfesihkaya.av.tr
Address: Mevlana Boulevard No:221, Yıldırım Tower, Office No:148, 06520 Balgat, Çankaya, Ankara, Turkey