A foreign supplier provides an incorrect HS code and the Turkish importer uses it in the customs declaration. Learn whether the importer remains liable for additional duties and penalties, how the assessment can be challenged and when losses may be recovered from the supplier.

A Turkish importer may purchase goods from a foreign manufacturer or supplier and receive a commercial invoice containing an HS code. The importer or its customs broker may then use that classification in the Turkish customs declaration.

Months or years later, Turkish Customs may decide that the code was incorrect and demand:

• Additional customs duties;
• Additional import taxes;
• Anti-dumping duties;
• Late-payment amounts;
• Administrative penalties.

The importer may argue:

“We did not choose the HS code. The foreign supplier provided it.”

That fact is important, but it does not automatically eliminate the Turkish importer’s customs exposure.

The Ministry of Trade expressly states that tariff positions appearing on invoices, transport documents and similar documents issued in European Union or third countries are not binding in Turkey, although they may be used as guidance when determining the correct classification.

The case should therefore be examined through three separate questions:

Was the supplier’s HS code actually incorrect?

What liability does the Turkish importer have toward Customs?

Can the importer recover the resulting loss from the foreign supplier?

1. Do Not Automatically Accept Customs’ New Classification

The first step is not to blame the supplier.

First determine whether Turkish Customs’ alternative classification is correct.

Compare:

• Supplier’s HS code;
• Declared Turkish GTIP;
• Customs’ proposed GTIP;
• Product composition;
• Function;
• Technical specifications;
• Tariff wording;
• Relevant section and chapter notes.

If Customs’ classification is incorrect, the additional assessment and related penalty may potentially be challenged.

2. A Foreign Supplier’s HS Code Is Not Binding in Turkey

This is the starting point.

The Ministry of Trade confirms that tariff codes appearing on foreign invoices and transportation documents do not bind Turkish Customs. They can nevertheless be considered as guidance during classification.

Therefore, the defense:

“The supplier put this code on the invoice”

will not by itself resolve the dispute.

3. Why Can the Foreign Supplier’s Code Differ?

A foreign supplier may use a different code because:

• Its domestic tariff system differs after the harmonized digits;
• The supplier uses an outdated classification;
• The product specification changed;
• The supplier made an error;
• The supplier used a generic commercial classification;
• Turkish national subdivisions differ.

Turkey uses a 12-digit GTIP system. The first six digits correspond to the international Harmonized System, while later digits reflect additional nomenclature and national/statistical subdivisions.

4. Check Where the Codes Diverge

For example:

Supplier: 8471.XX…

Turkish Customs: 8471.YY…

This may indicate disagreement only at a later subdivision.

But if:

Supplier: 8471…

Turkish Customs: 8517…

the dispute concerns the underlying HS heading itself.

That generally requires a much deeper technical classification analysis.

5. Obtain the Supplier’s Classification File

Ask the supplier to provide:

• Classification memorandum;
• Technical specifications;
• Product catalogue;
• Composition details;
• Engineering drawings;
• Foreign customs rulings;
• Previous import classifications.

Do not accept only:

“This is the code we always use.”

The legal reasoning matters.

6. Determine Whether the Supplier Expressly Recommended the Code

There is an important difference between:

HS code merely printed automatically on an invoice

and

supplier expressly advising the importer that this is the legally correct classification.

Preserve all emails and contractual documents.

They may become important in a later recovery claim.

7. Check Whether the Imported Product Matches the Supplier’s Classification

Verify:

• Model number;
• Part number;
• Material;
• Function;
• Version;
• Production date.

The supplier’s classification may concern a similar but technically different product.

8. Historical Specifications Are Particularly Important

If Customs is reviewing a 2023 import in 2026, obtain the product specifications applicable in 2023.

Do not automatically use today’s catalogue.

Product modifications can affect classification.

9. Was the Product Accurately Described to Customs?

This is a critical distinction.

The importer may have declared the product accurately but selected the wrong tariff code.

That is different from providing incorrect information concerning:

• Material;
• Composition;
• Function;
• Model;
• Quantity.

The penalty analysis should reflect the actual conduct alleged.

10. Determine Who Entered the Code in the Turkish Declaration

The supplier may have supplied the original code, but the Turkish declaration may have been prepared by:

• Importer;
• Customs department;
• Customs broker.

Identify the complete decision chain.

11. Customs Brokers Do Not Automatically Eliminate Importer Exposure

The Ministry confirms that companies may submit customs declarations themselves or act through licensed customs brokers. Customs brokers are private-sector professionals who also provide customs and foreign-trade advisory services.

If a broker copied the supplier’s HS code without independent analysis, broker responsibility may also need to be investigated.

12. There May Be Three Potentially Responsible Parties

A typical dispute can involve:

Foreign supplier

→ provides incorrect HS code.

Customs broker

→ uses the code without sufficient verification.

Turkish importer

→ becomes subject to Customs assessment.

Responsibility between these parties must be analyzed separately from Customs’ public-law claim.

13. Separate Additional Duty From Administrative Penalty

This is essential.

Even where the classification was incorrect, analyze separately:

Additional customs duty

and

Administrative penalty.

Do not assume that because additional duty is payable, every penalty calculated by Customs is automatically valid.

14. Identify the Exact Penalty Provision

Obtain the penalty decision and determine:

• Legal basis;
• Alleged violation;
• Declaration concerned;
• Duty difference;
• Calculation method.

Then evaluate whether the statutory requirements are satisfied.

15. Supplier Reliance Can Be Relevant to the Penalty Defense

Suppose:

• Supplier is the manufacturer;
• Supplier provided detailed technical documentation;
• Supplier expressly identified the HS code;
• Importer accurately disclosed the goods;
• Customs later adopted another plausible classification.

These facts may help demonstrate that the case concerns a genuine technical classification dispute rather than concealment.

They do not automatically eliminate liability, but they should be documented.

16. Foreign Customs Rulings Can Be Useful Evidence

If the supplier has a classification ruling from another jurisdiction, obtain it.

Foreign tariff positions are not binding in Turkey, but official Ministry guidance recognizes foreign classification information as potentially useful guidance.

17. Check Whether the First Six HS Digits Match

Because the first six digits arise from the international Harmonized System framework, disagreement at this level deserves particular technical attention.

Determine why Turkey and the supplier’s jurisdiction reached different conclusions concerning apparently identical goods.

18. Review Turkish Classification Materials

The Ministry’s tariff resources include tariff explanatory materials and classification decisions, including current classification-decision communiqués.

The company’s position should therefore be built on the Turkish tariff framework rather than the supplier’s commercial practice alone.

19. Previous Turkish Customs Treatment Can Help

Collect previous declarations for identical goods.

Determine whether Turkish Customs previously:

• Inspected the goods;
• Examined documents;
• Conducted laboratory analysis;
• Accepted the supplier-derived classification.

Historical acceptance is not necessarily binding, but it may be important evidence.

20. Binding Tariff Information Can Reduce Future Risk

For recurring imports, consider Binding Tariff Information.

The Ministry describes Binding Tariff Information as an administrative decision concerning classification of goods under the Turkish Customs Tariff Schedule. For goods unquestionably identical to those covered by a valid decision, Customs must classify them in accordance with that decision, subject to the applicable conditions.

This provides much stronger prospective certainty than relying on a supplier invoice.

21. Binding Tariff Information Is Primarily Prospective

A new Binding Tariff Information decision generally addresses future qualifying customs transactions rather than automatically rewriting historical declarations.

Therefore:

Historical assessment

and

future classification certainty

should be handled separately.

22. Protect the Current Customs Challenge Deadline

Do not wait for:

• Supplier investigation;
• Broker explanation;
• Future tariff ruling;
• Commercial negotiations.

The existing assessment or penalty must be challenged within the applicable procedural framework.

23. Review the Supply Agreement

The next question is whether the importer can recover losses from the foreign supplier.

Check provisions concerning:

• Product specifications;
• HS classification;
• Customs compliance;
• Taxes and duties;
• Warranties;
• Indemnification;
• Limitation of liability;
• Governing law;
• Dispute resolution.

24. Did the Supplier Guarantee the HS Code?

Some contracts expressly state:

“Supplier warrants that the tariff classification provided for the products is accurate.”

Others state that HS codes are provided only for informational purposes.

That difference can substantially affect a recovery claim.

25. Review Pre-Contract Representations

Even if the final contract contains no express HS-code warranty, preserve:

• Quotations;
• Emails;
• Technical offers;
• Compliance questionnaires;
• Tender responses.

The supplier may have made relevant representations before signing.

26. Customs Liability and Contractual Liability Are Separate

A contractual promise by the supplier does not necessarily prevent Turkish Customs from pursuing the importer.

The importer may need to:

defend or pay the Customs claim

and separately

recover the loss from the supplier.

27. Can Additional Customs Duty Be Recovered From the Supplier?

This can be legally complex.

The supplier may argue:

“If the correct code had been used originally, you would have paid the duty anyway.”

Therefore, whether the principal duty constitutes recoverable contractual damage depends on the contract, pricing structure, representations and causation.

28. Penalties May Present a Stronger Recovery Argument

Where a supplier’s incorrect technical information or express classification warranty directly caused an avoidable administrative penalty, the importer may have a stronger damages argument.

But the precise contract and governing law remain critical.

29. Late-Payment Amounts Should Be Considered Separately

The importer may also face charges arising because the correct duty was not paid at importation.

Determine whether these losses resulted from:

• Supplier information;
• Broker conduct;
• Importer’s own compliance failures.

Causation should be established carefully.

30. Incoterms May Affect the Commercial Allocation

Review whether the sale was concluded under:

• DDP;
• DAP;
• CIF;
• FCA;
• Another delivery term.

The Incoterm can affect commercial responsibility for import procedures and costs, but it should not automatically be treated as determining every public-law customs liability issue.

31. DDP Transactions Deserve Particular Attention

Where a foreign seller contractually assumed substantial responsibility for delivery into Turkey, the importer should carefully review whether historical customs costs fall within the seller’s contractual obligations.

The entire contract must be examined, not merely the Incoterm abbreviation.

32. Review Limitation and Notice Provisions in the Supply Contract

A supplier contract may require claims to be notified within:

• A specified period after delivery;
• A specified period after discovery;
• Another contractual limitation period.

Send appropriate notice promptly.

33. Notify the Supplier Without Admitting the Customs Case

The notice can explain:

• Customs’ allegation;
• Affected imports;
• Potential exposure;
• Supplier information relied upon.

Avoid unnecessarily admitting that Customs’ classification is correct while the dispute remains open.

34. Require the Supplier to Preserve Evidence

Ask the supplier to preserve:

• Historical specifications;
• Classification records;
• Engineering documents;
• Foreign rulings;
• Emails;
• Product samples where available.

Historical technical evidence can disappear quickly.

35. Review Customs Broker Responsibility Too

If the supplier’s code was obviously inconsistent with the technical documents, ask whether a competent broker should have identified the problem.

Potential supplier responsibility does not automatically exclude broker responsibility.

36. Multiple Parties Can Contribute to the Same Loss

The facts may show:

Supplier gave wrong code

Broker failed to review it

Importer had no internal classification control.

Allocation of contractual responsibility may therefore require detailed causation analysis.

37. Identify All Historical Imports Using the Supplier’s Code

Search the company’s customs records.

Prepare:

Declaration	Date	Product	Supplier Code	Turkish Code	Potential Exposure

One assessment may indicate a much larger historical problem.

38. Review Similar Products From the Same Supplier

The supplier may have used the same classification methodology for:

• Spare parts;
• Accessories;
• New models;
• Related products.

A focused internal review can identify exposure before Customs does.

39. Do Not Automatically Correct Every Historical Declaration

First determine whether Customs’ position is actually correct.

Premature broad corrections may create unnecessary admissions or expand exposure.

The classification issue should be technically resolved first.

40. Correct Future Imports Where Necessary

If the review confirms that the supplier’s classification is wrong, update:

• Internal product database;
• Customs broker instructions;
• Supplier documentation;
• Future declarations.

Do not continue an incorrect classification simply because litigation concerning historical imports remains pending.

41. A Prospective Change Does Not Automatically Decide the Past

The importer can adopt a different classification for future risk management while preserving arguments concerning historical declarations.

Document why the change was made.

42. Require Supplier Classification Documentation Going Forward

For future purchases, request:

• Proposed HS code;
• Classification rationale;
• Detailed technical specifications;
• Relevant foreign rulings.

Do not rely solely on an invoice number.

43. Introduce Internal HS Code Approval

Importers should maintain their own classification controls even when suppliers and brokers provide codes.

For high-risk products, classification should be approved before the first import.

44. Use Two Legal Tracks

The case should generally proceed simultaneously as:

Track One — Turkish Customs

Challenge the classification, assessment and penalty where legally justified.

Track Two — Supplier Recovery

Preserve contractual claims against the foreign supplier for incorrect information, warranties or indemnities.

45. Immediate Strategy When the Supplier Provides the Wrong HS Code

The recommended sequence is:

Obtain the Customs assessment

→ record the notification date

→ compare both tariff classifications

→ verify the product technically

→ obtain the supplier’s classification reasoning

→ review Turkish tariff materials

→ identify the exact penalty provision

→ separate duty from penalty

→ protect Customs challenge rights

→ identify all historical declarations

→ review the supply contract

→ send appropriate notice to the supplier

→ review customs broker responsibility

→ consider Binding Tariff Information

→ standardize future classifications.

25-Point Wrong Supplier HS Code Checklist

1. Obtain the Customs assessment.
2. Obtain the penalty decision.
3. Record notification dates.
4. Identify the supplier’s HS code.
5. Identify Customs’ classification.
6. Compare the first six digits.
7. Obtain historical technical specifications.
8. Confirm the exact product model.
9. Obtain the supplier’s classification reasoning.
10. Obtain foreign tariff rulings.
11. Review Turkish tariff rules.
12. Review classification decisions.
13. Review laboratory evidence.
14. Check previous Turkish imports.
15. Review previous inspections.
16. Identify the penalty provision.
17. Recalculate additional duties.
18. Identify all affected declarations.
19. Review the supply agreement.
20. Review HS-code warranties.
21. Review indemnities.
22. Notify the supplier.
23. Review broker responsibility.
24. Consider Binding Tariff Information.
25. Correct future classifications where necessary.

Frequently Asked Questions

1. Is a Turkish importer automatically protected because the foreign supplier provided the HS code?

No. A tariff code appearing on foreign commercial documentation is not binding on Turkish Customs.

2. Can the supplier’s HS code still be used as evidence?

Yes. Official Ministry guidance recognizes foreign tariff positions as potentially useful guidance even though they are not binding.

3. Does an incorrect supplier code automatically mean Customs’ new code is correct?

No. Customs’ classification should be independently tested against the product’s characteristics and the applicable tariff framework.

4. Can the importer avoid the administrative penalty?

Potentially. The penalty should be analyzed separately from the underlying additional duty. Supplier reliance, accurate disclosure, technical ambiguity and previous Customs treatment may be relevant depending on the applicable penalty provision.

5. Can the importer recover the penalty from the foreign supplier?

Potentially, particularly where the supplier expressly warranted the classification or provided inaccurate technical information. The contract, governing law and causation must be reviewed.

6. Can the importer recover the additional customs duty itself?

Possibly, but this can be more difficult because the supplier may argue that the correct duty would have been payable from the outset. Contractual pricing and risk allocation become important.

7. What if the customs broker simply copied the supplier’s code?

The broker’s professional responsibility should also be investigated. The Ministry confirms that customs brokers act as private-sector professionals and may provide customs and foreign-trade advisory services.

8. Can the company obtain an official classification for future imports?

Yes. Binding Tariff Information can provide an official classification position for qualifying future customs transactions involving goods matching the decision.

9. Should the importer immediately change the code for future shipments?

If technical and legal review confirms that the supplier’s code is incorrect, future declarations should be corrected. The reason for the change should be documented.

10. What is the most important point?

The supplier’s mistake does not automatically transfer the Turkish Customs problem away from the importer. The company should first challenge any incorrect Customs classification or penalty, while separately preserving contractual recovery rights against the supplier and examining whether the customs broker also contributed to the error.

Client-Focused Legal Support for Supplier HS Code Errors in Turkey

Supplier classification errors may involve:

Incorrect HS codes

Additional customs duties

Customs penalties

Foreign supplier liability

Customs broker responsibility

Post-clearance assessments

Binding Tariff Information

Contractual indemnities

and cross-border recovery claims.

Fırat Fesih Kaya Law Office assists foreign companies, Turkish importers and multinational groups where incorrect tariff information supplied by overseas manufacturers results in customs assessments or penalties in Turkey.

Lawyer Fırat Fesih Kaya provides legal assistance in challenging tariff classifications and customs penalties, investigating supplier and broker responsibility, reviewing international supply agreements, preserving cross-border recovery claims and developing compliant classification strategies for future imports.

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