
Basic Customs Clearance Process
When importing or buying goods from China, customs clearance is always required. First, let me explain the basic customs clearance process.
When goods arrive at customs, a customs broker classifies them based on a number called the HS code.
An HS code is a globally standardized number used to classify products during import and export.
They were established based on the HS Convention, the "International Convention on the Harmonized Commodity Description and Coding System."
In Japanese, it is sometimes referred to as the “Import/Export Statistical Item Number,” “Tariff Number,” or “Tax Number.”
By looking at the HS code, you can determine the applicable tariff rate for the goods and the rules of origin used to determine the country of origin.
Comprising 21 sections and 97 chapters, the HS code subdivides product classifications in the order of the first two digits, four digits, and six digits.
The first six digits are used as a universal code worldwide.
The digits from the seventh digit onward are called statistical subdivisions and vary by country.
Japan has established a 9-digit HS code system that includes a 3-digit statistical subdivision.
Customs brokers determine the HS code based on the materials and intended use of the products being imported or exported, prepare an import declaration, and submit it to customs.
Afterward, customs officials verify the import declaration, and if there are no issues, the goods are cleared.
If a problem is identified, the import declaration must be rewritten or the goods inspected.
The formula used by customs brokers to calculate the duty amount when preparing an import declaration is as follows:

The Tariff System and the RCEP Agreement
When importing or buying products from China to Japan, the tariff rates established under the WTO Agreement—as determined by meetings of the World Trade Organization (an international organization for trade)—apply.
In summary, these are tariff rates under which WTO member countries and regions, including Japan, have committed (conceded) not to impose tariffs exceeding a certain rate.
In contrast, there are also tariff rates under an agreement known as the RCEP (Regional Comprehensive Economic Partnership).
RCEP is the world’s largest regional economic partnership agreement, involving a total of 15 countries, including Japan, China, South Korea, and the Association of Southeast Asian Nations (ASEAN).
It came into effect on January 1, 2022, and marks Japan’s first economic partnership agreement with China.
By using the tariff rates under the RCEP agreement, you can benefit from reduced tariffs, depending on the product.
However, to qualify for the RCEP tariff rates, products must be of origin from a signatory country, and a Certificate of Origin—which serves as proof of compliance with the rules of origin—must be submitted.
The RCEP Agreement adopts three systems: (1) the third-party certification system, (2) the authorized exporter self-certification system, and (3) the self-declaration system.
Under (1), a designated issuing authority (in Japan, the Japan Chamber of Commerce and Industry) issues the certificate of origin.
Under (2), an exporter who has been certified in accordance with their country’s laws (in Japan, certification by the Minister of Economy, Trade and Industry) issues the certificate themselves.
Under (3), either the exporter, producer, or importer prepares a declaration of origin.
Businesses may choose any of these certification systems.
Certificates of origin must provide detailed information ranging from raw materials to finished products, and there is a small fee associated with preparing the certificate.
In addition, to respond to verification requests from Japanese customs, it is necessary to prepare and retain relevant documents.
Summary
When buying and importing goods from China, you should compare the standard applicable tariff rates with those under the RCEP agreement based on the HS code to determine which to use.
There are two main types of tariff rates: those under the WTO Agreement and those under the RCEP Agreement.
WTO Agreement rates are applied automatically without any action on your part.
If you wish to apply the RCEP Agreement rates, you must prepare various documents.
When sourcing from China, checking the tariff rates in advance and deciding which type to apply can help reduce procurement costs.
Related Articles
All articlesYiwu Market Guide for International Buyers
The Yiwu Market is a place to find suppliers in China especially for people looking for small items wholesale products with low minimum order quantities, mixed orders, gifts, household stuff, accessories, toys, stationery, packaging and seasonal products. The Yiwu Market is huge it has thousands of suppliers showing their products in one place. You can find anything you need here at the Yiwu Market. The Yiwu Market is not like a store where you pick something and take it home. It is a market. Most booths are like showrooms. Buyers visit the Yiwu Market, place orders and then the products are made or prepared. After that the goods are shipped from the Yiwu Market. To succeed in sourcing from the Yiwu Market you need to know how it works. You should understand what the Yiwu Market is good for, how to choose suppliers at the Yiwu Market how to check product quality at the Yiwu Market and how to ship products from the Yiwu Market. You have to do your research and plan carefully to get the best out of the Yiwu Market. Buyers need to understand the Yiwu Market to source successfully from the Yiwu Market. The Yiwu Market is good for commodities and MOQ wholesale products. The Yiwu Market has products across every consumer category. Buyers should know how to evaluate suppliers at the Yiwu Market and control quality at the Yiwu Market. Logistics is also important once you have bought something from the Yiwu Market.
Why Does Customs Hold Things Up Over "Just One Document"?
“We’re stuck because of paperwork”—this is a phrase you often hear in the world of imports. The goods seem fine. The quantities match. Yet, customs clearance isn’t moving forward. Why does paperwork alone cause such a major problem? In this article, we’ll break down the reasons from a structural perspective.
Yiwu's Ultimate Market Sourcing Guide For Global Buyers In 2026
The Yiwu International Trade Market, also well known as the "World's Supermarket" is the world's largest wholesale market for small commodities. This trading market has been designed to serve importers, product distributors, commodity retailers and e-commerce sellers from across 210+ world countries and regions. With over 75,000 physical booths and 400,000+ product SKUs ranging from small to medium and extra large products, of all diversities,categories and types, the Yiwu International Trade Market has become the top sourcing destination for global buyers seeking cost-effective, diversified and customizable wholesale products. The Yiwu's Ultimate Market Sourcing Guide For Global Buyers In 2026 is a guide aimed at elaborating on the Yiwu Market's core advantages, district layouts/product types, standard procurement/purchasing processes,common pain points, professional sourcing solutions and sourcing agent options for global newcomers and long-term buyers.
Hardware Products and Tools Sourcing from China
When you purchase hardware products from China you can earn a lot of money. However if you only consider the price you will likely end up losing money. You need to think about the strength of the hardware products materials and how accurate the sizes of the hardware products. You also need to consider how well the hardware products resist corrosion and the quality of the surface treatment of the hardware products. Hardware products from China are really different from the things you can buy in stores. China is one of the places in the world where they make hardware and tools. They make all sorts of things like hand tools, fasteners, hardware for furniture, tools for building and tools for gardening. If you want to buy hardware products from China and do well you have to be very careful. You need to be careful about what hardware products you're buying and who you are buying the hardware products from. You need to check the quality of the hardware products. What certificates the hardware products have. You also need to think about how you will get the hardware products, from China to where you need the hardware products to be.