Importing from China to South Korea: KC and Customs

Importing from China to South Korea works like this: find a supplier, confirm the product can enter Korea legally (KC certification and Korean labeling where required), ship to Busan or Incheon, file the import declaration through UNI-PASS, pay duty plus 10% VAT, and take delivery. Korea clears cargo fast; almost every delay traces back to a wrong HS code, a missing certificate of origin, or goods that needed KC certification nobody arranged.

The Korea-China FTA has been cutting duties since 2015, which is one reason so many Korean buyers source from China. With the right certificate of origin, a large share of tariff lines are reduced or at zero. But KC rules stop uncertified electronics and radio equipment at the border. CN Ally helps buyers vet suppliers, confirm origin documents, and line up compliance checks before goods ship, so the shipment clears rather than sits.

What is the actual import process, step by step?

In practice, a Korean import from China follows five stages: qualify the supplier and product, lock compliance (KC where needed), book freight on the right terms, file the UNI-PASS declaration, and clear plus deliver.

1. Source and verify. Find suppliers, order samples, and confirm the factory's export history to Korea. Buyers who skip this stage often discover labeling or certification problems when the container is already at sea.
2. Confirm compliance. Check whether your product needs KC certification (electrical safety, EMC, or radio approval), whether it falls under food, cosmetic, or children's-product rules, and what Korean labeling is required. Start certification before you order production.
3. Book freight. For container cargo, FOB terms from the Chinese port with your own forwarder give you control; for small parcels, express or air DDP arrangements are common.
4. File the declaration. Your licensed customs broker (관세사) submits the import declaration through UNI-PASS with invoice, packing list, bill of lading, certificate of origin, and any required certifications. Most general cargo releases in 1–3 days.
5. Pay and deliver. Duty and VAT are assessed on the customs value; you pay before release, then truck or domestic courier moves the goods to your warehouse.

Korea Customs publishes guidance for first-time importers, and virtually every experienced buyer works through a licensed broker rather than filing themselves. The broker's fee is small next to a held shipment.

Who is allowed to import goods into Korea?

You need a Korean business. Companies register with the National Tax Service and receive a business registration number, their identifier across tax and customs systems. Individuals can also import, but commercial shipments are cleared under a business entity, and your customs broker files the declaration in your company's name.

Two things to set up before the first shipment:

• A licensed customs broker. Korean brokers are licensed professionals (관세사) who file through UNI-PASS, calculate duties, and communicate with Korea Customs Service on your behalf. For a foreign buyer this is the single most important relationship in the import chain, so choose one that handles your product category; KC-regulated goods and food imports involve checks a generalist may not run smoothly.
• UNI-PASS access. UNI-PASS is Korea Customs Service's electronic clearance system, a single-window platform your broker operates inside. You don't file yourself, but ask the broker to show you the declaration data before submission, because a wrong declared value or HS code becomes your liability.

If you are buying from outside Korea and shipping to Korean consumers (cross-border e-commerce into Korea), a different lane applies: each consignee needs a Personal Customs Clearance Code (PCCC), and parcels under USD 150 are generally exempt from duty and VAT, with exclusions. This article covers commercial importing.

How does the Korea-China FTA reduce your duty?

The China-Korea FTA took effect in 2015 and has been phasing tariffs down since. For qualifying goods, the FTA duty rate beats the standard MFN rate, and many tariff lines have reached zero.

The mechanism is the certificate of origin. Your Chinese supplier applies to the China Council for the Promotion of International Trade (CCPIT) or an authorized issuing body for an origin certificate in the FTA format, and you present it with your import declaration. No certificate, no preference: Korea Customs applies the standard MFN rate.

Three practical points that decide whether the FTA actually saves you money:

1. The certificate must match the shipment. Origin criteria, HS codes, and invoice details have to line up. Mismatches are the most common reason preferential claims get rejected at examination.
2. Rules of origin matter. The product must actually qualify as originating in China under the agreement's rules, not merely ship from China. Ask the supplier for origin details before you price the deal, not after.
3. The saving has to beat the hassle. On high-MFN-rate goods (apparel, footwear, some consumer goods), the FTA cut is worth real money. On items already at zero or near-zero MFN duty, the gain is small. Run the numbers per HS code.

Also note that Korea is party to RCEP alongside China. For some products, the RCEP preference may differ from the bilateral FTA rate; your broker can compare both and claim whichever is lower.

What will you actually pay? Duty and VAT math

Korea applies two layers of charges on imports: customs duty and value-added tax. VAT is a flat 10% on almost everything. Duty varies by HS code and by whether you claim an FTA preference.

Charge · Rate · Base

• Customs duty: MFN rate per HS code, commonly around 8% for many goods; lower or zero under the China-Korea FTA · Customs value (CIF)
• VAT: 10% · CIF value + duty paid
• Individual consumption tax: Varies; applies to specific luxury or listed goods only · Varies

A worked example: goods with a CIF value of $10,000 at 8% MFN duty. Duty = $800. VAT base = $10,800, so VAT = $1,080. Total import charges = $1,880, or 18.8% of CIF value. The same shipment with a zero-rate FTA preference would pay only the 10% VAT ($1,000) on the CIF value.

Two qualifications. First, duty rates differ by product; "8%" is the commonly cited general rate, not a rule, so confirm your exact HS code's rate with your broker. Second, Korea Customs applies its own exchange rate on the day of declaration, so the won-denominated assessment can shift slightly between order and clearance.

For low-value imports, remember the USD 150 de minimis threshold: shipments under it are generally duty- and VAT-free, with product exclusions. Splitting a commercial order into parcels to dodge duty is not a compliant strategy and customs watches for it.

Which products need KC certification?

KC (Korea Certification) is the mark for product safety compliance in Korea, and it is the gate most China-sourced shipments fail at when they fail. Products without required KC certification can be denied entry, and uncertified goods found on the Korean market can bring penalties. TÜV SÜD's KC certification overview describes the same route: application, factory inspection, product and EMC testing, then the mark.

The system splits into safety certification and radio/EMC conformity, administered through different regulators:

Product type · Regime · Regulator / route

• Electrical appliances and equipment with safety risk: KC safety certification · KATS (Korean Agency for Technology and Standards); designated certification bodies, factory inspection often required
• Radio equipment, wireless devices, terminal equipment: KC conformity (type verification or registration) · RRA (National Radio Research Agency); type verification tests run through the RRA
• IT and multimedia equipment: EMC registration · RRA route; electromagnetic compatibility testing
• Electrical/electronic goods generally: WEEE/RoHS-style notification · Ministry of Environment; recycling and hazardous-substance rules

The practical takeaways for a buyer:

• Confirm the category before ordering. The product list is long and technical; your broker or a Korean certification consultant can classify the product. Do not rely on the Chinese supplier's word that "KC is not needed" without independent confirmation.
• A local representative is required. The KC applicant is normally the Korean importer or a local representative, not the Chinese factory. If you are the importer of record, the certification sits with you.
• Certification takes weeks, not days. Testing, documentation review, and factory inspection (for the safety-certification route) take their course, so start certification in parallel with sampling, not after the production order.
• The KC mark must be on the product. Customs and market surveillance both check it.

Beyond KC: cosmetics go through the Ministry of Food and Drug Safety (MFDS) with their own notification regime; food and food-contact goods need import inspection; children's products have separate safety rules; and consumer goods generally need Korean-language labeling with the importer identified. The common thread: each regulated category has a Korean gatekeeper, and none accept foreign certificates in place of the Korean one. CE and UL marks do not substitute for KC.

CN Ally runs pre-shipment checks that include verifying markings, labels, and certification documents against the purchase order, which catches the errors Korean inspections flag most often.

How does customs clearance work through UNI-PASS?

UNI-PASS is Korea Customs Service's online clearance portal, and every formal import declaration runs through it. From your side, the workflow looks like this:

1. Your broker prepares the declaration with the commercial invoice, packing list, bill of lading (or air waybill), certificate of origin, and any KC or sectoral approvals.
2. It is submitted electronically. UNI-PASS runs risk screening; most general cargo clears without physical inspection.
3. Customs reviews. Typical clearance takes 1–3 days for straightforward shipments; inspection or document queries extend it.
4. Duty and VAT are paid, the release order issues, and goods move inland.

What holds shipments up, in roughly the order of frequency: missing or mismatched certificates of origin for FTA claims; goods that needed KC certification and arrived without it; HS code disputes where customs reclassifies to a higher-duty line; undervaluation flags, where the declared value looks implausible. Nearly all of these are preventable on the China side. Factory audits before production confirm that the supplier is a real manufacturer with export experience to Korea, not a trading company improvising documentation.

Which port should you use: Busan or Incheon?

For China-origin cargo, the choice is almost always Busan for sea freight and Incheon for air. Freight-forwarder lane notes for South Korea report the same pattern: short, frequent sailings into Busan and fast air transit through Incheon.

Factor · Busan · Incheon

• Role: Korea's largest container port; main sea gateway · Main air gateway (Incheon International Airport); sea port for the Seoul metro area
• Best for: FCL and LCL sea freight from China · Air freight, express, and urgent replenishment
• Transit from China: Sea: typically 2–5 days port to port · Air: typically 1–3 days gateway to gateway
• Clearance: 1–3 days for straightforward cargo · 1–3 days for straightforward cargo
• Inland: Strong for southern industrial zones; longer haul to Seoul · Shortest haul to Seoul and the capital region's warehouses

Match the port to your warehouse location and urgency. Sea freight from China's major ports to Busan is short and frequent, which is why ocean is the default for anything that fits a container. Air through Incheon suits samples, urgent restocks, and high-value electronics. Note the China-side peak seasons: rates and space tighten around Chinese New Year (January/February), Golden Week (early October), and the September–November pre-holiday push.

On Incoterms: FOB from the Chinese port is the standard for buyers who want control over the main leg. EXW suits buyers with their own China-side logistics. DDP (supplier handles everything including Korean clearance) is convenient but bundles the duty into an opaque price, and it works best with suppliers experienced in Korean compliance. Whatever you choose, shipping coordination should be arranged before production finishes, not after.

Frequently asked questions

Do I need a Korean company to import from China?

For commercial importing, effectively yes. Declarations are filed under a business entity with a Korean business registration number, and your licensed customs broker clears in that company's name. Foreign sellers shipping directly to Korean consumers use the cross-border lane instead, where each consignee provides a Personal Customs Clearance Code.

How much is import duty from China to South Korea?

Duty depends on the HS code: many goods carry an MFN rate around 8%, with 10% VAT applied on top of the duty-paid value. Under the China-Korea FTA, qualifying goods with a valid certificate of origin get reduced or zero duty, which can cut the total import charge roughly in half on dutiable categories.

What is KC certification and how long does it take?

KC certification is Korea's mandatory product-safety conformity system for regulated goods, covering electrical safety (KATS route) and radio and EMC conformity (RRA route). The process involves application, testing at designated labs, and often factory inspection, running several weeks to a couple of months for complex products.

Can my Chinese supplier hold the KC certificate?

No. The KC applicant is the Korean importer or a Korea-based representative, not the overseas factory. The certification sits with you, and the KC mark with certification details must appear on the product.

How long does shipping from China to Korea take?

Air freight reaches the Korean gateway in roughly 1–3 days; sea freight takes about 2–5 days port to port. Add 1–3 days for customs clearance on straightforward shipments, plus inland transport. Ask forwarders for the all-in figure on your specific lane rather than the port-to-port number.

Is there a minimum order value for importing into Korea?

No legal minimum for commercial imports, but the USD 150 de minimis threshold means small shipments under that value are generally exempt from duty and VAT, with product exclusions. For commercial-scale importing, formal declaration through UNI-PASS applies regardless of value.

Your three-check rule before placing the order

Before you send the purchase order, confirm three things in writing: the product's KC and labeling requirements as classified by your Korean broker or certification consultant, the exact HS code and the duty rate with and without the FTA preference, and the supplier's commitment to provide the FTA certificate of origin with the shipping documents. If any of the three is unclear, the order waits. Shipments that clear on the first filing all share one trait: the paperwork was settled before production, not after.

If you want a second pair of eyes on the supplier side, CN Ally verifies factories, confirms export documentation, and runs pre-shipment inspections in China so the goods that arrive in Busan or Incheon match what you ordered. Email hi@cnally.com with your product and target port, and we will map out the sourcing and compliance steps for your first shipment.