Customs Law & Compliance

Türkiye is a natural hub for trade between Europe, the Middle East and Asia, and for any importer or exporter the customs regime is where commercial planning meets the tax bill. The framework is set by Customs Law No. 4458, which is broadly harmonised with the EU Customs Code, and it governs how goods are classified, valued and cleared, as well as the penalties for getting it wrong. For a foreign trading company the practical questions are consistent: what code and value apply to the goods, whether an origin proof can cut the duty, which authorisations save time and cost, and how to defend a position if the administration reopens it. We help clients answer all of these before the first shipment moves.

The Customs Union and A.TR Origin

The single most important feature of Turkish trade for an EU-facing business is the EU–Türkiye Customs Union, in force since 1996. It covers industrial goods and processed agricultural products, most of which move between Türkiye and the EU without customs duty when they travel in free circulation under an A.TR movement certificate. The Union deliberately does not cover basic agricultural products, coal and steel, or services, so those sectors follow the ordinary tariff and any applicable trade rules.

Origin sits alongside the A.TR. Preferential origin — under the Customs Union or one of Türkiye’s free-trade agreements, evidenced by an A.TR, EUR.1 or EUR-MED certificate — can reduce or remove duty, while non-preferential origin governs trade-defence measures and labelling. The distinction is central to the wider import and export regime, and it is the first thing we test when planning a supply chain.

An A.TR proves free circulation, not origin. Using an A.TR where the trade actually requires a EUR.1 or EUR-MED origin proof — or vice versa — is a common and expensive mistake, because the wrong certificate can be rejected and the duty assessed after the goods have already been sold.

Classification and Customs Value

Two variables decide almost every customs outcome: the classification of the goods and their customs value.

Classification is done through the GTİP code (Gümrük Tarife İstatistik Pozisyonu), built on the international Harmonized System. The code drives the duty rate, the VAT rate and any measure attached to the product. Because the whole liability follows the code, we confirm classification up front and, where the position is genuinely uncertain, use a binding tariff ruling rather than leave it to chance at the border.

Customs value is normally the transaction value — the price actually paid or payable for the goods — adjusted to add elements such as freight, insurance, royalties and commissions, on the WTO Customs Valuation (GATT Article VII) basis. Since duty and import VAT are charged on this value, an understated price or an omitted royalty is a classic trigger for a later assessment.

Import Charges: Duty, VAT, ÖTV and Additional Duties

An import into Türkiye can attract several layers of charge, and the total is often well above the headline duty rate. The main components are these:

Charge	Turkish name	Basis
Customs Duty	Gümrük Vergisi	Set by the annual Import Regime Decree, by GTİP code and origin
Import VAT	KDV	Standard 20%, reduced 10% or 1%, on the customs value plus duty
Special Consumption Tax	ÖTV	On specific goods (e.g. fuels, vehicles, alcohol, tobacco)
Additional Customs Duty	İlave Gümrük Vergisi	Protective duty, heaviest on non-FTA origins
Additional Financial Obligation	Ek Mali Yükümlülük	Protective charge on certain goods and origins

The additional duties in the last two rows are the ones that most often surprise a new importer, because they are designed to protect domestic industry and bite hardest on goods from countries with no free-trade agreement with Türkiye. Modelling the full landed cost — and coordinating it with the client’s tax position — is part of getting the structure right before goods are ordered.

Trusted-Trader Status and Duty-Relief Regimes

Compliant traders can move goods faster and cheaper. The Authorized Economic Operator programme (Yetkilendirilmiş Yükümlü Statüsü — YYS) grants simplifications and lower-intervention clearance to traders that meet the reliability, solvency and security criteria. Alongside it, Customs Law No. 4458 provides a set of duty-relief regimes that suspend or reduce charges where goods are not being placed on the domestic market for good:

Regime	Turkish name	What it does
Inward Processing	Dahilde İşleme (DİR)	Import inputs without duty/VAT (or reclaim them) to process and re-export
Outward Processing	Hariçte İşleme	Send goods abroad for processing, re-import with partial relief
Customs Warehousing	Antrepo	Store non-Union goods under customs control, duty deferred
Temporary Importation	Geçici İthalat	Bring goods in temporarily (e.g. exhibitions) with relief; ATA Carnet
Transit	Transit Rejimi	Move goods through Türkiye under customs control (TIR / NCTS)

The Inward Processing Regime is the workhorse for Turkish manufacturers and exporters: it lets them import raw materials and inputs without paying customs duty and VAT, on condition that the processed goods are then exported. It carries an export commitment and a time limit, and if the commitment is not met the suspended duties fall due together with penalties. These regimes interact closely with free zones and the related customs regimes, and choosing between them is a planning exercise rather than a form-filling one.

Duty relief is conditional relief. Miss the export commitment or the time limit on an inward-processing authorisation and the suspended duties crystallise with penalties — so the paperwork and the deadlines have to be managed as tightly as the production schedule.

Customs Audits, Disputes and Penalties

Clearance is not the end of the story. Authorities may reassess after release through a post-clearance audit (sonradan kontrol), typically revisiting classification, valuation or origin. Where they raise an assessment, it is challenged first by objection (itiraz) to the customs administration and then, if refused, before the tax and administrative courts.

Penalties sit in Customs Law No. 4458, and where the conduct crosses into smuggling — misdeclaration to evade duty, undeclared goods, prohibited imports — the Anti-Smuggling Law No. 5607 applies, with criminal consequences. Where a dispute concerns protective measures on dumped or subsidised imports rather than an ordinary assessment, it belongs to the separate field of trade remedies, which we handle in parallel.

Our Approach

We act for importers, exporters and foreign trading companies across the full arc of a customs matter — establishing the correct classification and value, planning origin and the duty-relief regimes, securing YYS and other authorisations, supporting clearance, and defending assessments and penalties when they arise. Because customs sits at the intersection of tax, logistics and regulation, we coordinate it with our foreign-investment and trade work so the whole structure holds together. Contact us to discuss how your goods are classified, valued and cleared in Türkiye.