Customs Valuation of Discounts in Turkey: When Can Authorities Reject a Discounted Price? — 2026 Current Guide

When can Turkish Customs reject a discounted import price? Learn which discounts are acceptable, what evidence is required, how related-party discounts are reviewed and how to challenge an assessment in 2026.

Discounts are common in international trade, but Turkish Customs may question an import price that is significantly below a supplier’s list price, previous imports or comparable market transactions.

A discounted price is not automatically unlawful. Customs valuation generally focuses on the price actually paid or payable, provided that the discount is genuine, commercially justified, properly documented and not used to conceal another payment.

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

Can Customs Reject a Discounted Price?

Turkish Customs may reject a discounted price where:

• The discount is not documented;
• The discount was agreed only after importation;
• The buyer was not entitled to the discount at the time of import;
• The invoice does not show the discount clearly;
• A credit note was concealed;
• The discount is conditional on an unknown future event;
• The discount is linked to a hidden payment;
• The importer and exporter are related;
• Bank payments do not match the net invoice price;
• The discount appears artificial or excessive;
• The declared price is inconsistent with accounting records.

A low net price alone should not justify rejection. Customs should examine the commercial terms and evidence supporting the reduction.

Types of Discounts Commonly Examined

Volume Discounts

Volume discounts may be accepted where the buyer commits to a specific quantity or achieves a contractual purchase level.

Useful evidence includes:

• Volume-discount agreement;
• Purchase commitments;
• Order history;
• Quantity schedules;
• Supplier price policy;
• Previous customer transactions;
• Credit notes;
• Payment reconciliation.

Promotional Discounts

Promotional or market-entry discounts may be genuine where a supplier is entering a new market, launching a product or supporting a marketing campaign.

The importer should provide:

• Promotional agreement;
• Marketing plan;
• Campaign records;
• Product-launch documents;
• Price list showing the standard price;
• Evidence that the discount was available to comparable customers.

Early-Payment Discounts

An early-payment discount may be accepted if it was agreed before importation and the importer actually paid within the required period.

The file should contain:

• Contractual payment terms;
• Invoice showing the discount;
• Bank records;
• Payment date;
• Supplier account statement;
• Calculation of the reduction.

A discount that was never actually applied or paid may be challenged.

Quality or Defect Discounts

A reduction for defective, damaged or non-conforming goods may be legitimate, but the importer should prove the underlying problem.

Evidence may include:

• Inspection report;
• Quality complaint;
• Photographs;
• Warranty correspondence;
• Credit note;
• Settlement agreement;
• Replacement records;
• Technical report.

A credit issued after importation may require separate customs analysis.

Seasonal and Clearance Discounts

Seasonal reductions, obsolete inventory sales and distressed-stock discounts can be accepted when supported by:

• Supplier price lists;
• Inventory reports;
• Sales campaign records;
• Product age;
• Expiry information;
• Market data;
• Independent customer transactions.

The importer should explain why the goods were sold below the ordinary list price.

Year-End and Retroactive Discounts

A year-end rebate or credit note may affect customs value if it relates to imported goods. However, a general group-company profit adjustment may not automatically justify a customs refund.

The importer should identify:

• The original pricing formula;
• The affected products;
• The affected declarations;
• The calculation method;
• Whether the discount was foreseeable;
• Whether it was contractually required;
• Whether the credit was actually received.

Requirements for Accepting a Discount

A discounted transaction value is generally stronger where:

• The discount was agreed before shipment;
• The contract clearly describes it;
• The invoice shows the gross and net price;
• The buyer was entitled to the reduction;
• The discount is commercially available or objectively justified;
• The amount is quantifiable;
• The payment matches the net price;
• The discount relates to the imported goods;
• No hidden side payment exists;
• The accounting records are consistent.

A discount does not need to be available to every customer, but a special discount should have a clear commercial explanation.

Invoice Presentation

The invoice should state, where applicable:

• List price;
• Discount percentage or amount;
• Net unit price;
• Quantity;
• Currency;
• Delivery term;
• Payment term;
• Product description;
• Contract reference;
• Any post-sale adjustment mechanism.

An invoice showing only an unusually low net price, without explaining the reduction, may attract scrutiny.

The importer should avoid issuing a separate informal discount letter after the goods arrive. Any correction should be authorised, transparent and supported by the original agreement.

Bank and Payment Evidence

Customs may compare:

• Gross invoice amount;
• Discounted net amount;
• Bank transfer;
• Credit note;
• Supplier account statement;
• Payment date;
• Third-party payments;
• Set-off arrangements.

If the importer paid an amount different from the net invoice price, it should prepare a detailed reconciliation.

Possible explanations include:

• Bank fees;
• Advance payment;
• Multiple invoices;
• Freight paid separately;
• Currency conversion;
• Credit note;
• Warranty compensation;
• Payment for unrelated services.

Each difference should be documented.

Related-Party Discounts

A discount granted by a parent company or affiliated supplier may receive additional scrutiny. Customs may ask whether the relationship influenced the price.

The importer should provide:

• Group structure;
• Intercompany agreement;
• Transfer-pricing policy;
• Price-setting procedure;
• Comparable unrelated-party prices;
• Functional analysis;
• Volume or market explanation;
• Profit-margin analysis;
• Board or management approvals.

Related-party status does not automatically make the discount unacceptable. The importer must show that the reduction has a genuine commercial basis.

Discounts and Transfer Pricing

A discount may form part of a transfer-pricing policy, but tax and customs treatment remain separate.

Customs may ask whether:

• The price was provisional;
• A year-end adjustment was expected;
• The target margin affected import prices;
• The discount covers goods or services;
• The adjustment relates to specific imports;
• The transfer-pricing report matches customs declarations.

The company should avoid contradictory statements in tax filings, customs submissions and financial records.

When Can Customs Use an Alternative Value?

If the transaction value cannot be accepted, Customs may apply alternative valuation methods based on:

1. Identical goods;
2. Similar goods;
3. Deductive value;
4. Computed value;
5. A fallback method.

The importer should request an explanation of:

• Why the discounted transaction value was rejected;
• Which comparable goods were used;
• How differences were adjusted;
• What data supported the new value;
• How the customs duty and import VAT were calculated.

A reference price should not automatically replace a genuine discounted price without a legally sufficient analysis.

Post-Clearance Review of Discounts

Turkish Customs may review discounts after the goods have been released. The audit may examine:

• Several years;
• Multiple suppliers;
• Product lines;
• Credit and debit notes;
• Bank records;
• Sales data;
• Transfer-pricing reports;
• ERP entries;
• Resale prices.

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.

A company should maintain discount records for every declaration and product category.

Financial and Penalty Risks

If Customs concludes that a discount was artificial or improperly declared, the importer may face:

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

A genuine clerical mistake should be distinguished from deliberate concealment. Hidden payments, fabricated discount agreements or knowingly false invoices may create more serious administrative or criminal risks.

How Can the Importer Defend the Discount?

The importer should:

1. Obtain the written Customs request or assessment.
2. Identify the relevant declarations.
3. Produce the original discount agreement.
4. Show the gross and net price.
5. Reconcile bank payments.
6. Explain credit and debit notes.
7. Provide supplier and accounting confirmation.
8. Demonstrate commercial comparability.
9. Separate goods from services.
10. Address related-party pricing.
11. Challenge unsupported reference values.
12. Obtain specialist customs-law advice.

The response should use documents created in the ordinary course of business and remain consistent with tax and accounting records.

Challenging a Customs Assessment

The importer may challenge:

• Rejection of the transaction value;
• Failure to consider a contractual discount;
• Incorrect treatment of a credit note;
• Use of unsuitable comparable goods;
• Inclusion of post-import costs;
• Related-party conclusions;
• Import VAT calculation;
• Penalty calculation;
• Notification or limitation defects.

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, the importer may bring proceedings before the competent tax court within the applicable procedural period. A separate suspension-of-execution request may be necessary because an objection or lawsuit does not automatically suspend collection.

Settlement may be available for certain customs debts and penalties. The importer should compare settlement with litigation and possible contractual recovery from the supplier.

2026 Digital Compliance Priorities

In 2026, Turkish Customs increasingly compares:

• E-invoices;
• E-ledgers;
• ERP records;
• Bank payments;
• Supplier price lists;
• Credit notes;
• Transfer-pricing reports;
• Customs declarations;
• Resale data.

Companies should maintain a digital discount register identifying the legal basis, products, dates, calculation and affected shipments.

Frequently Asked Questions (FAQ)

1. Is a discounted invoice price automatically accepted by Turkish Customs?

No. The discount must be genuine, documented, commercially justified and objectively quantifiable.

2. Can a volume discount reduce customs value?

Yes, if it was agreed before importation and supported by purchase commitments, invoices and payment records.

3. Can a promotional discount be rejected?

It may be rejected if there is no evidence of the campaign, market conditions or the supplier’s pricing policy.

4. Are post-import credit notes automatically accepted?

No. The importer must prove that the credit relates to imported goods and was contractually or commercially justified.

5. Are related-party discounts automatically unacceptable?

No. The importer can prove that the reduction was determined under genuine commercial conditions.

6. Can Customs request the supplier’s price lists?

Yes. Price lists and unrelated-customer sales may help Customs assess whether the discount is commercially credible.

7. Can a year-end rebate create a customs refund?

Possibly, but a direct link to identified import declarations is generally required.

8. Can Customs replace a discounted price with a reference value?

Only where the transaction value cannot legally be accepted and the alternative valuation method is properly applied.

9. What is the objection deadline against a discount assessment?

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

10. Can a company challenge a customs penalty caused by a discount dispute?

Yes. The importer may challenge the factual basis, calculation, intent assessment and procedural validity of the penalty.

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 Discount and Customs Valuation Disputes

Fırat Fesih Kaya Law Office advises international companies, foreign suppliers, Turkish importers, manufacturers and distributors on discounted import prices and customs valuation.

Lawyer Fırat Fesih Kaya can assist with discount agreements, credit notes, transaction-value evidence, related-party pricing, transfer-pricing coordination, customs audits, 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