In plain words
The Harmonized System is managed by the World Customs Organization (WCO) and is used by more than 200 countries and economies. The first 6 digits are the same worldwide. Each country then adds more digits for its own tariff: the EU uses 8 digits (CN), and Turkey uses 12 digits, called GTİP.
The importer is responsible for the right code, even when a customs broker prepares the declaration. A wrong code can mean the wrong duty, delays, fines, or problems with licences and trade agreements. If you are unsure, you can ask customs for a binding tariff decision before you import.
Example from real shipping
An importer brings in cotton T-shirts. The first 6 digits, 6109.10, mean “T-shirts, singlets and other vests, knitted or crocheted, of cotton” everywhere in the world. Turkish customs uses the full 12-digit GTİP to find the exact duty rate, and the broker writes this code on the declaration and the invoice.
Related terms
- Commercial InvoiceA commercial invoice is the seller's bill to the buyer for the goods. Customs uses it to see what the goods are and how much they cost.
- Customs brokerA customs broker is a licensed professional who prepares and submits customs declarations for importers and exporters, and deals with customs for them.
- Landed costLanded cost is the total cost of getting a product to your door: the price of the goods plus freight, insurance, duties, taxes, and all other fees on the way.
Related service
Have a shipment in mind?
Tell us about your cargo, and we will explain the documents and costs for your route.
Request a QuoteThis glossary is general information, not legal or customs advice. Rules, fees, and practice can differ by carrier, port, and country.