Transfer Pricing Adjustment After Importation: Does It Change Customs Value in Turkey? — 2026 Current Guide

Does a year-end transfer-pricing adjustment change customs value in Turkey? Learn how upward and downward adjustments affect import duty, VAT, related-party transactions and refund claims in 2026.

Transfer-pricing adjustments made after imported goods have been cleared can create a difficult conflict between tax compliance and customs valuation. A Turkish subsidiary may revise the price it pays to a foreign parent company after the end of the financial year. That adjustment may increase or decrease the original import price.

The key question is whether the adjustment relates to the price actually paid or payable for the imported goods. A tax adjustment is not automatically a customs adjustment, but Turkish Customs may investigate the relationship and demand additional duty where the final price of the goods was higher than declared.

The Turkish Ministry of Trade explains the transaction-value method and customs valuation rules in its official customs valuation guidance.

What Is a Post-Import Transfer-Pricing Adjustment?

A transfer-pricing adjustment is a change made between related companies to bring the price of goods or services into line with an arm’s-length result.

Common adjustments include:

• Year-end profit-margin adjustments;
• Cost-plus true-ups;
• Resale-price adjustments;
• Lump-sum debit notes;
• Credit notes;
• Retroactive price revisions;
• Intercompany service allocations;
• Royalty or management-fee adjustments;
• Minimum-profit adjustments;
• Inventory or warranty adjustments.

The adjustment may be calculated after the imported goods have been released. It may cover several shipments, products, countries or business units.

Customs Value and Transfer Pricing Are Different

Transfer pricing generally focuses on whether related companies used an arm’s-length price for income-tax purposes. Customs valuation focuses on the value of imported goods for calculating customs duty and import VAT.

These two systems may use similar commercial data but have different legal objectives.

A price accepted by the tax authority may still be questioned by Customs. Conversely, a customs value accepted at importation does not automatically determine the correct transfer-pricing result.

Companies should coordinate both analyses and avoid submitting contradictory explanations to tax and customs authorities.

Upward Adjustments

An upward adjustment increases the amount ultimately paid to the foreign supplier or parent company.

Examples include:

• A year-end debit note;
• A price increase to achieve a target operating margin;
• An additional payment for imported inventory;
• A retroactive cost-plus adjustment;
• A transfer-pricing true-up allocated to imported goods.

An upward adjustment may affect customs value where it is objectively connected to the imported goods and represents part of the price paid or payable.

Turkish Customs may ask:

• Which imports are covered;
• How the adjustment was calculated;
• Whether the price formula existed before importation;
• Whether the adjustment relates to goods or services;
• Whether the payment was made to the seller;
• Whether the adjustment was allocated correctly;
• Whether the amount was already included in the original declaration.

If the adjustment relates to imported goods, the importer may face additional customs duty, import VAT, interest and penalties.

Downward Adjustments

A downward adjustment reduces the amount ultimately paid to the foreign supplier.

Examples include:

• A credit note;
• A compensation for defective goods;
• A year-end price reduction;
• A reduction due to lower profitability;
• A commercial rebate;
• A warranty or quality adjustment.

A downward transfer-pricing adjustment does not automatically create a right to customs repayment. The importer generally must show that:

• The adjustment relates specifically to imported goods;
• The adjustment was required under the original contract or pricing formula;
• The amount is objectively calculated;
• The goods and declarations affected can be identified;
• The adjustment is not merely a tax allocation;
• The commercial circumstances support the reduction.

Customs authorities may be reluctant to grant repayment where the adjustment is a general group-company correction unrelated to specific imports.

Is the Adjustment Known at the Time of Import?

One of the most important issues is whether the adjustment was foreseeable or determinable when the goods were imported.

The importer’s position may be stronger where:

• The contract contains a clear price-adjustment formula;
• The parties use a documented target-margin mechanism;
• The adjustment is calculated using objective data;
• The importer knows that the price will be revised;
• The adjustment relates to specific products or shipments;
• Similar adjustments have been made consistently.

The issue becomes more complex where the adjustment is discretionary, negotiated after importation or calculated only for tax purposes.

Companies should preserve the original pricing policy, forecasts, agreements and internal approval records.

Documents Turkish Customs May Examine

A customs valuation file should include:

• Intercompany sales agreement;
• Transfer-pricing policy;
• Pricing formula;
• Purchase orders;
• Original invoices;
• Debit and credit notes;
• Bank statements;
• Supplier account statements;
• General ledger entries;
• Inventory records;
• ERP reports;
• Profit-margin calculations;
• Cost-plus analysis;
• Resale-price analysis;
• Country-by-country allocation;
• Product and shipment schedules;
• Customs declarations;
• Year-end financial statements;
• Transfer-pricing report;
• Audit correspondence;
• Board or management approvals.

The importer should prepare a reconciliation showing the relationship between the adjustment and each affected import declaration.

Related-Party Transactions

A transfer-pricing adjustment involving a parent company, subsidiary or affiliated supplier will usually attract additional scrutiny.

Customs may examine:

• Shareholding structure;
• Control relationships;
• Group agreements;
• Functional analysis;
• Risk allocation;
• Profit targets;
• Comparable transactions;
• Resale margins;
• Year-end adjustments;
• Intercompany payment flows;
• Royalty or service arrangements.

Related-party status does not automatically invalidate the transaction value. The importer can defend the price by showing that the relationship did not prevent Customs from determining the value using objective data.

Services, Royalties and Mixed Adjustments

A transfer-pricing adjustment may cover both imported goods and services. The importer should separate:

• Product price adjustments;
• Management services;
• Technical support;
• Marketing;
• Software;
• Royalties;
• Financing;
• Warranty;
• Distribution services.

A general year-end debit note should not automatically be treated entirely as a customs-value addition. The importer should provide a product-specific allocation and explain which amounts relate to imported goods.

Customs Treatment of Upward Adjustments

If an upward adjustment relates to imported goods, the importer should assess whether a customs correction or additional declaration is required.

The importer should consider:

• The legal basis of the adjustment;
• The date the customs debt arose;
• The affected customs declarations;
• The applicable duty rates;
• Import VAT;
• Additional customs duties;
• Interest;
• Penalty exposure;
• Possible voluntary correction procedures.

A company should obtain legal advice before making a disclosure because the timing and wording may affect penalties and limitation.

Customs Treatment of Downward Adjustments

For a downward adjustment, the importer may consider a repayment or remission application where the applicable legal conditions are satisfied.

The application should generally include:

• The original customs declarations;
• The contract and pricing formula;
• Credit note;
• Payment records;
• Accounting entries;
• Product and shipment allocation;
• Explanation of the commercial reason;
• Evidence that the adjustment was contractually required;
• Proof that the goods were not defective solely after importation, if relevant.

A general tax adjustment without a direct link to identified imports may not be sufficient.

Post-Clearance Audits

Turkish Customs may review transfer-pricing adjustments after the goods have been released. The audit may cover:

• Several financial years;
• Multiple product lines;
• Group-company transactions;
• Import invoices;
• Bank records;
• ERP data;
• Credit and debit notes;
• Resale prices;
• Royalty and service payments.

Under the general framework of Customs Law No. 4458, under-assessed customs duties may generally be notified within three years from the date the customs debt arose, subject to statutory exceptions.

The importer should identify the precise declarations and periods covered by the investigation.

2026 Digital Data Matching

In 2026, Turkish Customs increasingly compares customs data with:

• E-invoices;
• E-ledgers;
• ERP systems;
• Bank payments;
• Transfer-pricing reports;
• Financial statements;
• Related-party disclosures;
• Import declarations;
• Intercompany debit and credit notes.

Companies should maintain one consistent data set for tax, customs, finance and accounting purposes. A difference between the transfer-pricing report and customs declaration may trigger an investigation even where no intentional undervaluation exists.

Penalties and Financial Risks

If Customs concludes that an upward adjustment should have been included, the importer may face:

• Additional customs duty;
• Import VAT on the revised base;
• Additional customs duties;
• Interest;
• Administrative customs penalties;
• Storage and financing losses;
• Contractual disputes with the parent company.

Where Customs alleges concealed payments or deliberate understatement, the matter may receive more serious administrative or criminal scrutiny. A genuine year-end accounting adjustment does not automatically prove fraud.

Challenging a Customs Assessment

The importer may challenge an assessment by arguing that:

• The adjustment relates only to services or domestic activity;
• It does not concern imported goods;
• The adjustment was already reflected in the invoice price;
• Customs used an incorrect allocation;
• The adjustment is not objectively quantifiable;
• The transfer-pricing calculation was tax-driven and not a product-price revision;
• The customs debt was incorrectly calculated;
• The limitation period expired;
• The notification or penalty procedure was defective.

Under Article 242 of Customs Law No. 4458, an objection is generally filed within 15 days from lawful notification of the customs decision.

If the objection is rejected, proceedings may be brought before the competent tax court within the applicable procedural period. An objection or lawsuit does not automatically suspend collection. A separate suspension-of-execution request may be necessary where immediate payment would cause serious and difficult-to-repair harm.

Settlement may be available for certain customs debts and penalties. The importer should compare settlement with litigation and any internal recovery from the foreign parent company.

Compliance Checklist

International groups should:

1. Include a clear price-adjustment clause in the supply agreement.
2. Identify whether adjustments cover goods or services.
3. Maintain shipment-level allocation records.
4. Reconcile invoices, payments and debit or credit notes.
5. Coordinate transfer-pricing and customs positions.
6. Document related-party pricing.
7. Review royalty and service payments separately.
8. Preserve ERP and accounting records.
9. Assess upward adjustments before closing the financial year.
10. Analyse repayment options for downward adjustments.
11. Monitor customs limitation periods.
12. Obtain legal advice before disclosure.

Frequently Asked Questions (FAQ)

1. Does every transfer-pricing adjustment change customs value?

No. It changes customs value only if it relates to the imported goods and satisfies the applicable customs valuation requirements.

2. Must an upward year-end adjustment be reported to Customs?

Potentially, where it represents additional payment for imported goods. The contract, calculation and affected shipments must be analysed.

3. Can a downward adjustment produce a customs refund?

Possibly, but a direct and documented link to specific imports is generally required.

4. Are related-party adjustments automatically rejected?

No. The importer may prove that the price and adjustment were determined objectively.

5. Can a tax adjustment be ignored for customs purposes?

Not automatically. Customs may investigate whether the tax adjustment includes an amount relating to imported goods.

6. Can one debit note cover goods and services?

Yes, but the importer should separate and allocate the components clearly.

7. What if the adjustment was discretionary?

A discretionary adjustment may be more difficult to connect to customs value. The company should provide the original pricing policy and commercial explanation.

8. Can Customs investigate adjustments after clearance?

Yes. Post-clearance audits may cover earlier import declarations and financial years.

9. What is the Turkish objection deadline?

An objection is generally filed within 15 days from lawful notification under Article 242 of Customs Law No. 4458.

10. Can the parent company be required to provide transfer-pricing records?

It may need to support the Turkish importer with agreements, calculations, payment records and explanations during verification.

This article is intended for general informational purposes only. To avoid any loss of rights, we recommend consulting your lawyer regarding your specific circumstances.

Legal Support for Transfer-Pricing and Customs Disputes

Fırat Fesih Kaya Law Office advises international groups, foreign parent companies, Turkish subsidiaries, importers, manufacturers and distributors on transfer-pricing adjustments and customs valuation.

Lawyer Fırat Fesih Kaya can assist with upward and downward price adjustments, customs audits, related-party transactions, debit and credit notes, repayment applications, additional-duty assessments, administrative objections and tax-court proceedings.

For urgent legal support:

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