A year-end transfer pricing adjustment increases the amount paid for goods imported into Turkey. Learn when additional customs duty may arise, how debit and credit notes should be analyzed, and what multinational companies should do about historical customs declarations.

Multinational groups frequently use year-end transfer pricing adjustments to bring a Turkish subsidiary’s profitability within the group’s target arm’s-length range.

For example, a Turkish subsidiary may import goods from its foreign parent throughout the year at predetermined intercompany prices. At year-end, the group determines that the Turkish company’s operating margin is higher than intended and issues a substantial debit note.

This creates an immediate customs question:

Does the year-end payment represent an additional amount paid for the imported goods?

If the answer is yes, Turkish Customs may argue that the original customs values were understated and that additional customs duty and other import taxes are payable.

The issue requires careful analysis because Turkish customs valuation is based primarily on the price actually paid or payable for goods sold for export to Turkey, subject to the adjustments required under the customs valuation rules. The Ministry of Trade also confirms that customs valuation methods must generally be applied sequentially, beginning with transaction value.

1. What Is a Year-End Transfer Pricing Adjustment?

A multinational may establish an annual target profitability range for its Turkish subsidiary.

During the year:

Foreign parent sells goods

→ Turkish subsidiary imports them

→ Customs declarations are filed using invoice prices

→ Turkish subsidiary resells the goods.

At year-end, actual profitability is compared with the target.

The group may then issue:

• Debit note;
• Credit note;
• Transfer pricing true-up;
• Price adjustment;
• Profitability adjustment.

The customs treatment depends on the substance of that adjustment.

2. An Accounting Label Does Not Determine Customs Treatment

Calling a payment:

“Transfer Pricing Adjustment”

does not automatically establish whether it affects customs value.

Customs will be concerned with the economic and contractual substance.

The key question is:

What is the payment actually for?

3. Determine Whether the Adjustment Relates to Imported Goods

This is the first major test.

A year-end payment may relate directly to:

• Purchase price of imported goods;
• Product-specific price adjustment;
• Volume rebate;
• Inventory price adjustment.

Alternatively, it may relate to:

• Management services;
• Marketing support;
• Financing;
• Cost allocation;
• Other independent transactions.

The company should determine the true basis before deciding whether historical customs declarations are affected.

4. Upward Adjustments Create the Greatest Immediate Customs Risk

Assume the Turkish subsidiary imported goods for:

EUR 20 million

during the year.

At year-end, the foreign parent issues:

EUR 2 million debit note.

If that EUR 2 million represents an additional amount payable for the imported merchandise, Customs may investigate whether the original transaction values require adjustment.

The Ministry defines the transaction value by reference to the price actually paid or payable, subject to the applicable statutory adjustments.

5. Do Not Assume Every Debit Note Increases Customs Value

A debit note is not automatically additional purchase consideration.

Review:

• Intercompany agreement;
• Transfer pricing policy;
• Calculation;
• Accounting treatment;
• Description on the debit note;
• Product allocation;
• Purpose of payment.

Substance is more important than terminology.

6. Determine Whether the Adjustment Can Be Allocated to Imported Goods

Suppose the EUR 2 million adjustment relates to all products imported during the year.

Can it be allocated:

• By invoice?
• By product?
• By quantity?
• By customs declaration?
• By business segment?

This allocation exercise is critical.

7. Build a Declaration-Level Reconciliation

Prepare a table containing:

Declaration	Original Customs Value	Relevant Adjustment	Revised Value
Declaration 1	EUR 100,000	EUR 10,000	EUR 110,000
Declaration 2	EUR 200,000	EUR 20,000	EUR 220,000
Declaration 3	EUR 150,000	EUR 15,000	EUR 165,000

Do not make a customs correction based solely on an annual accounting figure without understanding how it relates to individual imports.

8. Review the Original Intercompany Pricing Agreement

The agreement may provide that import prices are:

final

or

provisional and subject to year-end adjustment.

This distinction can be important.

If prices were contractually provisional from the beginning, Customs may examine whether the subsequent true-up forms part of the ultimate amount payable for the imported goods.

9. Transfer Pricing and Customs Valuation Are Different Systems

A transfer pricing adjustment may be necessary for corporate tax purposes.

That does not automatically determine its customs treatment.

Corporate transfer pricing primarily considers whether related-party dealings satisfy the arm’s-length principle.

Customs valuation determines the customs value of imported goods under a separate statutory framework.

The two systems must therefore be reconciled rather than treated as interchangeable.

10. Review the Transfer Pricing Report

Examine exactly what the report says.

For example:

“The Turkish distributor must earn a 3% operating margin.”

If the Turkish subsidiary earns 8%, the parent may increase the cost of goods.

But ask:

Does the transfer pricing report characterize the adjustment as a goods-price adjustment?

The wording can become important during a customs audit.

11. Review the Debit Note Description

A debit note stating:

“Additional purchase price for goods imported during 2026”

creates a very different customs issue from one stating:

“Regional management service allocation.”

However, merely changing the description cannot alter the actual economic substance.

Documentation must remain consistent.

12. Review the Accounting Treatment

Determine where the adjustment was recorded.

Was it booked to:

• Cost of goods sold;
• Inventory;
• Management expense;
• Royalty expense;
• Marketing expense;
• Other operating expense?

Accounting treatment is not necessarily decisive, but it can become important evidence.

13. Check Whether the Payment Was Actually Made

Reconcile:

Debit note

→ intercompany ledger

→ bank payment

→ financial statements.

Customs may examine whether an additional amount was actually paid or remains payable to the foreign seller.

14. Examine Whether the Foreign Seller Benefits From the Adjustment

The customs valuation rules focus broadly on amounts paid or payable to the seller or for the seller’s benefit in connection with the imported goods.

Therefore, indirect payment structures should also be examined carefully.

15. Review Royalties Separately

The year-end adjustment may coexist with royalty payments.

Certain royalties and licence fees connected with imported goods and payable as a condition of sale can require inclusion in customs value under the applicable conditions.

Do not combine the royalty analysis automatically with the transfer pricing true-up.

16. Review Assists Separately

The Turkish subsidiary may also provide:

• Tooling;
• Moulds;
• Components;
• Designs;
• Engineering.

Qualifying assists provided free or at reduced cost can affect customs value under the applicable rules.

Each category should be analyzed independently.

17. What About a Year-End Credit Note?

Suppose the opposite happens.

The Turkish subsidiary’s profitability is too low.

The foreign parent issues a:

EUR 2 million credit note.

The Turkish importer may ask:

Can we obtain a customs refund because the final purchase price decreased?

This requires a separate legal and documentary analysis.

18. Downward Adjustments Do Not Automatically Produce Refunds

A corporate transfer pricing credit does not necessarily mean that every historical customs declaration was legally overvalued.

The company should determine:

• Whether the credit actually relates to imported goods;
• Whether the original price was provisional;
• How the credit is allocated;
• Whether the applicable repayment conditions and deadlines are satisfied.

The customs analysis should be completed before filing a broad refund request.

19. Customs May Examine Asymmetry

Multinationals should be prepared for Customs to scrutinize a structure under which:

upward adjustments are treated as unrelated to imported goods

while

downward adjustments are claimed as reductions in customs value.

The company needs a consistent methodology for both directions.

20. Create a Written True-Up Policy

The group’s transfer pricing policy should explain:

• Why adjustments occur;
• How they are calculated;
• Which transactions they relate to;
• How they are allocated;
• Whether they modify product prices.

A consistent written methodology significantly improves the company’s position.

21. Identify Which Products Are Included

A year-end adjustment may cover several business lines.

For example:

Medical devices

industrial equipment

spare parts

software

services.

Do not automatically allocate the entire adjustment across imported goods.

Identify the transactions actually responsible for the true-up.

22. Separate Goods From Services

If part of the adjustment relates to genuine services, document:

• Service agreement;
• Description;
• Beneficiary;
• Calculation;
• Evidence of performance.

This helps prevent a goods-price adjustment and an independent service payment from being confused.

23. Separate Domestic Transactions

Some profitability adjustments may include expenses or revenue unrelated to imports.

Exclude unrelated domestic activities from the customs analysis where legally appropriate.

24. Check the Customs Value Additions Already Declared

Before calculating additional exposure, determine whether the original customs values already included relevant additions such as:

• Freight;
• Insurance;
• Royalties;
• Assists.

Avoid double counting.

The Ministry confirms that additions to the price actually paid or payable must be based on objective and measurable data and that additions outside the prescribed categories cannot simply be imposed.

25. Recalculate Customs Duty Declaration by Declaration

If an upward adjustment genuinely increases customs value, calculate the potential consequences for each affected declaration.

Include:

• Customs duty;
• Additional customs duty;
• Import taxes;
• Other value-dependent import charges where applicable.

Do not simply multiply the annual true-up by one headline customs rate.

26. Different Products May Have Different Duty Rates

A single year-end adjustment may cover products classified under numerous tariff positions.

For example:

Product A: 0% customs duty

Product B: 6%

Product C: 12%

Product D: subject to additional customs duty.

Allocation therefore matters enormously.

27. Origin May Also Affect the Result

Products may benefit from different preferential regimes depending on:

• Origin;
• Documentation;
• Applicable trade arrangement.

The same EUR 100,000 adjustment can therefore produce different customs consequences across declarations.

28. Check Historical Tariff Rates

Use the rates applicable to the relevant importation period.

Do not calculate a 2024 import using a 2026 duty rate merely because the adjustment was booked in 2026.

Each declaration should be reconstructed according to its applicable legal framework.

29. Review Limitation Issues

Before correcting historical declarations or accepting an additional assessment, determine which periods remain legally open.

The analysis should be declaration-specific.

Do not assume that a year-end accounting adjustment automatically reopens every historical import.

30. Consider Voluntary Correction Carefully

Where internal review confirms that customs value was understated, the company should evaluate available correction mechanisms and their consequences.

But do not rush into correcting hundreds of declarations before determining:

• Whether the true-up actually relates to goods;
• Correct allocation;
• Correct tax rates;
• Applicable periods;
• Potential penalty treatment.

31. Customs Penalties Require Separate Analysis

An additional customs duty does not automatically resolve the penalty question.

Review:

• Statutory basis;
• Nature of the original declaration;
• Information available at importation;
• Whether the adjustment was foreseeable;
• Whether the price was provisional;
• Timing of the correction.

The penalty should be analyzed independently from the additional tax.

32. The Original Declaration May Have Been Correct Based on Information Then Available

This can be particularly important where the year-end adjustment depends on profitability that could not be determined until the accounting period closed.

The company should preserve evidence showing:

• Original pricing methodology;
• Information available at importation;
• Timing of profitability calculation;
• Date of true-up determination.

This may become relevant to the penalty analysis.

33. Do Not Alter Historical Documents

Do not retrospectively rewrite invoices or contracts to make the customs position appear stronger.

Preserve the original documents.

Any later explanation should clearly be identified as a later explanation.

34. Notify the Customs Team Before the True-Up Is Booked

A common multinational compliance failure occurs when:

Tax department calculates adjustment

→ finance books debit note

→ payment is made

→ customs team discovers it months later.

Create an internal notification process before the adjustment is finalized.

35. Customs and Tax Teams Should Review the Adjustment Together

Before issuing the debit or credit note, review:

Corporate tax effect

Customs valuation effect

VAT effect

Accounting effect

Contractual characterization.

This can prevent inconsistent treatment.

36. Review the Intercompany Agreement Before Year-End

If the agreement contains unclear language concerning price adjustments, identify the issue before the annual true-up.

Future agreements can more clearly describe:

• Pricing mechanism;
• Provisional pricing;
• Adjustment calculation;
• Allocation.

The contract should reflect commercial reality.

37. Customs May Expand the Review to Previous Years

If Customs discovers a large year-end adjustment, it may ask:

Were similar adjustments made in previous years?

Prepare a historical schedule showing:

Year	Import Value	Debit/Credit Adjustment	Customs Treatment
2024	EUR 15m	+EUR 1m	Review
2025	EUR 18m	-EUR 500k	Review
2026	EUR 20m	+EUR 2m	Current

This allows the group to understand its exposure before an audit expands.

38. Review Previous Customs Audits

Determine whether the same pricing system was previously:

• Disclosed;
• Examined;
• Discussed;
• Challenged.

Historical Customs correspondence may be relevant, although previous treatment does not automatically determine future liability.

39. Prepare an Audit File

The file should contain:

• Intercompany agreement;
• Transfer pricing report;
• True-up calculation;
• Debit or credit note;
• Accounting entries;
• Payment evidence;
• Product allocation;
• Customs declaration list;
• Duty calculations;
• Royalty and assist analysis.

Do not wait until Customs requests these documents.

40. Challenge an Incorrect Customs Assessment

If Customs treats the entire transfer pricing adjustment as additional customs value without examining what the adjustment actually represents, the company should review the assessment critically.

Possible issues include:

• Services improperly included;
• Domestic transactions included;
• Wrong allocation;
• Wrong tariff rates;
• Duplicate additions;
• Closed historical periods;
• Incorrect penalty calculation.

41. Customs Valuation Cannot Be Arbitrary

Where transaction value cannot properly be used, the Ministry confirms that alternative customs valuation methods must be applied in sequence. The final method cannot be based on arbitrary or fictitious values or simply on a system selecting the higher of two possible values.

A transfer pricing audit therefore does not give Customs unlimited discretion to invent a revised value.

42. Protect the Formal Challenge Deadline

If Customs issues an additional assessment or penalty, immediately record:

• Decision date;
• Notification date;
• Amount;
• Legal basis.

Do not allow internal approval procedures at the foreign headquarters to consume the Turkish procedural deadline.

43. Consider Cash-Flow Consequences

Large transfer pricing adjustments can generate substantial customs liabilities across hundreds of declarations.

Management should model:

Best case

Expected case

Maximum exposure

before deciding how to proceed.

44. Establish a Prospective Customs-Transfer Pricing Protocol

For future years:

Quarterly profitability review

→ estimate likely year-end true-up

→ assess customs implications

→ adjust prospective pricing where commercially and legally appropriate

→ document decisions

→ reconcile at year-end.

This can reduce unexpected liabilities.

45. Immediate Action Plan

When a year-end transfer pricing adjustment may increase customs value:

Stop and identify what the adjustment represents

→ review the intercompany agreement

→ review the transfer pricing calculation

→ separate goods from services

→ determine whether imported goods are affected

→ allocate the adjustment to products and declarations

→ recalculate duties using historical rates

→ review royalties and assists

→ review limitation periods

→ assess correction options

→ analyze penalties separately

→ prepare historical exposure

→ protect challenge deadlines

→ coordinate tax, finance and customs teams

→ establish a prospective compliance system.

25-Point Year-End Adjustment Checklist

1. Intercompany sales agreement.
2. Transfer pricing policy.
3. Transfer pricing report.
4. Functional analysis.
5. Benchmarking study.
6. True-up calculation.
7. Debit note.
8. Credit note.
9. Accounting treatment.
10. Payment records.
11. Intercompany ledger.
12. Product allocation.
13. Invoice allocation.
14. Customs declaration allocation.
15. Historical duty rates.
16. Origin documentation.
17. Additional customs duty analysis.
18. Royalty agreements.
19. Assist documentation.
20. Service agreements.
21. Historical adjustments.
22. Limitation analysis.
23. Correction strategy.
24. Penalty analysis.
25. Customs audit file.

Frequently Asked Questions

1. Does every upward transfer pricing adjustment create additional customs duty?

No. The substance of the adjustment must be examined. The critical issue is whether the additional amount forms part of, or otherwise affects, the customs value of imported goods under the applicable valuation rules.

2. What if the parent company issues a debit note after year-end?

A debit note may create customs implications if it represents additional consideration connected with imported goods. The agreement, calculation, accounting treatment and declaration-level allocation should be reviewed.

3. Can a transfer pricing adjustment relating to services increase customs value?

Not automatically. Genuine services should be analyzed separately. Their customs treatment depends on their nature and relationship to the imported goods.

4. What if the original import price was provisional?

This can be particularly important. If the contractual price was subject from the beginning to a later adjustment, the ultimate amount payable for the imported goods may require customs analysis.

5. Can a downward year-end adjustment create a customs refund right?

Potentially, but a transfer pricing credit note does not automatically establish a refund entitlement. The importer must examine whether the adjustment genuinely reduced the price of imported goods and whether the applicable repayment conditions are satisfied.

6. Should a multinational automatically correct all historical customs declarations?

No. The company should first establish the nature of the adjustment, allocate it correctly, identify the affected declarations, calculate the actual customs consequences and review applicable procedural rules.

7. Can Customs impose a penalty as well as additional duty?

Potentially. However, the penalty requires separate legal analysis. The information available when the original declarations were filed and the nature and timing of the later adjustment can be important.

8. What if the year-end adjustment covers goods with different customs duty rates?

The adjustment should not simply be multiplied by one rate. It may need to be allocated among the affected products and declarations so that the applicable historical customs treatment can be calculated correctly.

9. Can Customs investigate earlier years after discovering a 2026 true-up?

Yes, earlier pricing arrangements and declarations may be examined, subject to the applicable procedural and limitation framework. Companies should therefore conduct their own historical exposure analysis promptly.

10. What is the safest approach for multinational companies?

Integrate customs valuation into the transfer pricing process before the year-end adjustment is finalized. Every debit note, credit note and profitability true-up involving an importing Turkish subsidiary should be reviewed to determine whether it affects imported goods, how it should be allocated and whether any customs action is required.

Client-Focused Legal Support for Transfer Pricing and Customs Valuation in Turkey

Year-end transfer pricing disputes can involve:

Transfer pricing true-ups

Debit and credit notes

Related-party imports

Customs valuation

Additional customs duties

Historical customs declarations

Royalties and assists

Post-clearance audits

and customs penalties.

Fırat Fesih Kaya Law Office assists multinational groups, foreign parent companies and Turkish subsidiaries where year-end transfer pricing adjustments create potential customs valuation and additional duty exposure in Turkey.

Lawyer Fırat Fesih Kaya provides legal assistance in analyzing debit and credit notes, allocating transfer pricing adjustments to imported goods, reviewing historical customs declarations, calculating potential exposure, evaluating correction and refund strategies, challenging additional assessments and penalties, and coordinating customs valuation with multinational transfer pricing structures.

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