New E-commerce Rules for Cross-Border Shipping to South Korea in 2026: What Australian Businesses Should Know

‍Cross-border e-commerce to South Korea is changing for Australian businesses, as the Korea Customs Service introduces a dedicated registration and declaration system for eligible e-commerce businesses. 

As a result, shipments may lose access to the simplified De Minimis clearance process and require a formal import declaration instead. Korea Customs Service (KCS) has introduced the Cross-Border E-commerce Business Identification Number to manage cross-border e-commerce shipments and support customs clearance. The dedicated customs clearance platform was launched on 28 August 2026. 

Australian businesses should confirm whether the requirement applies to them before the De Minimis grace period ends on 31 December 2026. 

   

        

   

     

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Cross-Border E-commerce to South Korea: Quick Summary

Korea Customs Service requires businesses involved in cross-border e-commerce to South Korea to register for a Cross-Border E-commerce Business Identification Number. The requirement takes effect when the dedicated customs clearance platform launches on 28 August 2026.

• Confirm whether your business is an eligible overseas marketplace operator, domestic purchasing agent or sales intermediary, or international forwarder.
• Register from 28 August 2026 and use the Business Identification Number on import declarations and customs manifests.
• Use the existing De Minimis clearance process, a simplified pathway for eligible imports, during the grace period, which ends on 31 December 2026.
• Expect unregistered shipments to lose De Minimis eligibility after the grace period and require a formal import declaration.
• Prepare the required registration documents, including business, domain and tax certificates.

Compare international shipping to South Korea with Couriers & Freight.

New Registration Requirements for Cross-Border E-commerce Shipments to South Korea

Korea Customs Service (KCS) has introduced a Cross-Border E-commerce Business Identification Number for businesses handling cross-border e-commerce to South Korea. The registration rules apply to specified operator categories, including certain marketplace businesses, purchasing or sales intermediaries, and international forwarders.

• Overseas businesses operating an online marketplace and offering shipping services to Korea
• Domestic businesses operating an online marketplace or selling through one and providing cross-border e-commerce purchasing agency or sales intermediary services
• Domestic or overseas businesses providing international forwarding services for cross-border e-commerce shipments destined for Korea

Businesses that were previously registered with KCS as purchasing agents or e-commerce businesses must also register through the new system. Their previous registration does not automatically carry over.

Key Dates for Registration

The dedicated KCS customs clearance platform for cross-border e-commerce launches on 28 August 2026. From that date, the registered Business Identification Number becomes a mandatory data element on import declarations and customs manifests.

KCS has provided a grace period during which the existing De Minimis process, a simplified customs clearance pathway for eligible imports, can continue until 31 December 2026. 

What Happens If a Business Does Not Register

If an eligible business does not register and cannot use the dedicated cross-border e-commerce declaration format, its shipments arriving in Korea may be treated as person-to-person (C2C) transactions rather than commercial imports. 

This results in a higher likelihood of customs inspection and removes eligibility for the simplified De Minimis import declaration process. The shipment must instead undergo a formal import declaration. 

For example, a Melbourne retailer sending a skincare order to a customer in Seoul could face a different customs clearance process if the business has not completed the required registration. Checking registration requirements before booking the shipment lets the business address issues before the goods reach customs. 

A formal import declaration can extend customs clearance and delivery timeframes, although the actual timeframe will depend on the shipment and clearance circumstances. 

For information on formal import declarations, see Couriers & Freight's customs clearance service.

How to Register for Korea's Cross-Border E-commerce Business Identification Number

Registration requires five supporting documents: 

1. Mail-Order Business Registration Certificate
2. Internet Domain Registration Certificate
3. Business Registration Certificate
4. Corporate Registration Certificate (where applicable)
5. National Tax and Customs Tax Payment Certificate

Businesses complete registration through Korea Customs Service's UNIPASS cross-border e-commerce platform, then submit customer and transaction information to KCS through an API connection. This connection is a precondition for using the dedicated cross-border e-commerce declaration format, which lets import declarations be accepted on cargo arrival.

Registration alone is not enough. It needs to be paired with the required KCS system or API connection before a business can use the dedicated e-commerce declaration process. Instead, they are processed under the standard declaration pathway, even if the business has completed registration. This may slow customs clearance and delivery. 

Ship to South Korea with Couriers & Freight

Once your registration and data requirements are in place, make sure your shipping and customs processes are ready before booking Korea-bound shipments. 

Couriers & Freight provides international air freight, international economy air freight, and FCL and LCL sea freight to Korea, along with customs clearance support for Australian businesses.

Compare international shipping to South Korea with Couriers & Freight.

   

        

   

     

Book International Shipping to South Korea

     

Book international air and sea freight to South Korea through Couriers & Freight's carrier network.

     Get a Quote Now