What is customs clearance?
Customs clearance is the process of placing goods under a customs procedure: registering the declaration, assessing duties and taxes, and completing any inspection. On import it allows the goods to be released for free circulation; on export it allows them to leave the customs territory. In Türkiye the formalities are carried out either by the owner of the goods through direct representation or by a customs broker acting as indirect representative.
Why are the customs declaration and its registration critical?
The customs debt arises at the moment the declaration is registered, and the duty rate and exchange rate of that date apply. In Türkiye declarations are lodged electronically through the BİLGE system, and once a registration number has been issued the declaration is legally binding; correcting it follows a separate procedure. The registration date is a threshold not only for the rate and the exchange rate but also for the tax base: under Article 21 of the Turkish VAT Law, the base on import includes, in addition to the customs value, the taxes, duties, charges and shares paid on import and the expenses incurred up to the date of registration that have not yet been taxed. Storage and terminal costs that build up before registration therefore enlarge the VAT base, and the cost of waiting is not only the warehouse invoice.
Why does the tariff code matter so much?
The tariff code of the goods decides the duty rate, the trade policy measures that apply and the permits that will be asked for. The first six digits are the HS code of the World Customs Organization; countries add their own digits after that. In Türkiye the code, called GTİP, has 12 digits. Declaring the same product under two different positions can completely change the duty rate, the liability for anti-dumping duty, the need for pre-inspection or the request for a certificate. A wrong code leads to additional duty being assessed in a later check and to administrative sanctions. When in doubt, applying for binding tariff information (BTI) before import is the safest way to prevent a dispute later.
- Digits 1–6: Harmonized System (international).
- Digits 7–8: Combined Nomenclature (EU).
- Digits 9–10: national subdivision.
- Digits 11–12: statistical code.
On what base are customs duty, VAT and excise tax calculated?
Import taxes are built on a layered base: first the customs value, then the amount with customs duty added, and VAT last. The customs value is, as a rule, determined by the transaction value method and includes freight and insurance up to the border of Türkiye; in other words it is a CIF-based value (see Incoterms). Customs duty is calculated on this value at the rate of the tariff code. Excise tax (ÖTV) arises only on goods listed in the schedules attached to the law and enters the base in the layer before VAT. VAT is the last layer and is calculated on the base that includes the earlier taxes and the expenses incurred up to registration. The practical consequence is that an increase in freight is not reflected in the cost only by its own amount but together with its tax effect along the chain.
What do the red, yellow, green and blue lanes mean?
The lane shows at what level a declaration will be checked, and in Türkiye it is assigned automatically by the BİLGE system on registration, according to risk criteria. In the green lane there is neither a document check nor a physical inspection. In the blue lane the goods are released and the check is carried out afterwards on the declaration and the commercial records. In the yellow lane the declaration and its attachments are examined as documents and the goods are not opened. In the red lane, in addition to the document check, the goods are physically inspected and, where necessary, analysed in a laboratory. The declarant cannot choose the lane, but companies holding an Authorised Economic Operator (AEO) certificate can benefit from facilitations such as the green lane. The lane is one of the important indicators for estimating how many days a container will stay in port, and with it the exposure to demurrage.
What is the difference between temporary storage and a customs warehouse?
Temporary storage is a waiting place with a time limit, whereas a customs warehouse is a customs procedure. In Türkiye, after goods have been presented to customs, they wait in a temporary storage place until they are assigned a customs-approved treatment or use; this period is 45 days from the date of the summary declaration for goods arriving by sea and 20 days for goods arriving by other modes. If the period is exceeded, the goods enter the liquidation process. Under the customs warehouse procedure, by contrast, goods can as a rule stay under customs supervision without a time limit, and duties are not paid for as long as they remain in the warehouse. Because imports can be made in parts as the need arises, a customs warehouse is a deferral tool for importers who want to manage cash flow.
Customs inspection lanes in Türkiye and what they cover
| Lane |
Scope |
Effect on time |
| Green |
No document check and no physical inspection |
The fastest; linked to statuses such as AEO |
| Blue |
The goods are released and checked afterwards on documents and records |
Fast at the time of processing; the audit comes later |
| Yellow |
The declaration and its attachments are checked as documents |
Stops if the documents are missing or inconsistent |
| Red |
Document check + physical inspection of the goods, with analysis if needed |
The longest; inspection queue and laboratory time are added |
Frequently asked questions
Is it compulsory to work with a customs broker?
No. Article 225 of the Turkish Customs Law provides that the formalities are carried out by the owner of the goods and its representatives through direct representation, or by customs brokers through indirect representation. In indirect representation the broker acts in its own name but on behalf of the owner of the goods, and presents the power of representation to the customs administration. Working with a broker is a common choice for companies that import regularly.
What most often causes delays in customs clearance?
The most common causes are inconsistent documents and disputes over the tariff code: a difference in weight, number of packages or product description between the invoice, the packing list and the transport document requires the declaration to be corrected. To these are added a missing or invalid certificate of origin, goods that are subject to pre-inspection, a customs value inquiry and the inspection queue in the red lane. Every day of delay creates demurrage on the container and storage cost in the warehouse.
When is customs clearance considered complete in an export?
It is considered complete when the declaration is closed and the goods have actually left the Turkish customs territory. When the exit formalities are finished, a closing entry is made on the declaration, and the export exemption and the VAT refund rely on that entry. Even if the ship has been loaded, the process is not regarded as complete for accounting purposes until the declaration is closed.
Are release for free circulation and import the same thing?
In everyday use the same operation is meant, but technically release for free circulation is only one of the customs procedures. Under temporary admission, inward processing or the customs warehouse procedure, goods enter Türkiye without being released for free circulation; duties either do not arise at all or are secured by a guarantee. The choice of procedure directly determines the tax to be paid and for how long and where the goods may stay.