Bonded Storage in Korea: 6 Months to Store, 30 Days to Declare, and Why Bonded Transport Does Not Reset the Clock

Landing cargo in Korea does not make it Korean goods. Until customs accepts an import declaration, the shipment is legally foreign goods, and foreign goods cannot be stored just anywhere. Article 155(1) of the Customs Act restricts them to bonded areas.

A bonded area is a customs-supervised place where goods sit in Korea with duty still unpaid. Its value is not the square meters. It is the option it buys: you defer customs duty and VAT, and while the goods sit there you can still decide whether to bring them into the Korean market or ship them back out.

The catch is that there are two clocks, not one. The storage period governs how long the goods may physically stay. The declaration deadline governs when you must file. They run separately, and assuming the six-month figure covers both is where the penalty comes from.

What types of bonded areas exist in Korea?

Article 154 splits them three ways.

A designated storage place is the shared holding space where arriving cargo usually lands first. A bonded warehouse is a commercial facility run under licence, holding foreign goods and goods awaiting clearance (Art. 183(1)). A licence runs for up to ten years (Art. 176(1)).

A bonded factory is not storage at all. It lets you manufacture using foreign goods as raw materials, or foreign and domestic materials together (Art. 185(1)). Duty is settled only on what enters the Korean market.

Sitting beside all of this, under an entirely different statute, is the free trade zone, governed by the Act on Designation and Management of Free Trade Zones. Article 3(1) of that act disapplies the Customs Act inside the zone except where the FTZ act itself provides otherwise. More on that below.

How long can goods stay?

The statute sets a ceiling and a Korea Customs Service notice sets the actual period. Article 177(1)1(a) caps bonded warehouse storage of foreign goods at "a period set by the Commissioner within one year"; the Notice on Storage Periods for Bonded Cargo and Management of Overstayed Cargo fixes the real numbers.

The fourth row is the one that surprises people. Warehouses on the piers at Busan and Incheon, and container-only bonded warehouses off the pier, get two months, not six. CFS facilities are named explicitly, so leaving LCL cargo where it was deconsolidated puts it on a shorter clock than expected. The LCL and FCL decision itself is covered in LCL vs FCL ocean freight.

The count starts on the date of entry into the facility (Notice Art. 5(1)). Where one bill of lading arrives in several batches, counting starts when the last batch is in.

Goods that need long holding by their nature, such as government stockpiles, defense-industry reserves, and long-term export raw materials, get the period required for stockpiling instead (Customs Act Art. 177(1)1(c); Notice Art. 4(6)).

If storage runs six months, why is the declaration due in 30 days?

This is the part worth taking away.

Article 241(3) requires anyone who brings goods into a designated storage place or bonded warehouse, or stores them outside a bonded area, to file an import or re-export declaration within 30 days of entry. Miss it and a penalty of up to 2% of the customs value applies (Art. 241(4)).

The rate scales with the delay (Enforcement Decree Art. 247(1)).

The penalty is capped at KRW 5 million (Art. 247(2)). It does not apply to every shipment: Decree Article 248 delegates the covered list to the Commissioner, defined as goods whose rapid distribution is considered essential, judged by the type of bonded area and the nature of the goods. Whether a given cargo is on that list depends on its tariff code and the facility, so it is a question for your customs broker.

So the six months is a physical limit on where the goods may sit. It is not permission to delay filing. Any plan that defers duty by deferring the declaration starts paying at day 30. The declaration timing options themselves are set out in Korea import customs clearance.

Does moving goods under bond restart the clock?

No. The elapsed time follows the cargo.

Bonded transport moves foreign goods between fixed points without clearing them. Article 213(1) limits those points to seven: international ports, bonded areas, places permitted under Article 156, customs offices, clearance stations, clearance sites, and clearance post offices. Moving a container from Busan to an inland bonded warehouse without clearing it is the standard use.

Declarations are filed in the name of the cargo owner, a licensed customs broker, or a registered bonded carrier (Art. 214). Bonded carriers must register, and registration is valid for three years (Art. 222(1) and (5)). Arrival must be reported to customs at the destination (Art. 215), and customs may require security (Art. 218).

The transit window comes from Article 6 of the Notice on Bonded Transport: 10 days for ocean cargo and 5 days for air cargo from the date the declaration is accepted or approved. Where the declaration is filed before the vessel or aircraft arrives, customs may add up to five days.

Two provisions carry the elapsed time forward. First, where bonded transport into another bonded area would otherwise restart the count, goods whose storage period has already run are charged the previously counted time (Notice Art. 5(1)2). Second, for goods moved under bond after the declaration deadline passed, the penalty rate is fixed as of the bonded transport declaration and collected when the import or re-export declaration is filed (Decree Art. 247(3)).

Exports work differently. Goods with an accepted export declaration skip bonded transport procedures entirely (Art. 213(4)) and may be stored outside a bonded area (Art. 155(1)1). The export side is covered in Korea export customs clearance.

What do you actually gain by holding stock in bond?

Three things.

Payment moves later. Duty is due within 15 days of acceptance of the tax declaration (Art. 9(1)1). That 15-day window never starts while the goods sit undeclared. For a seller staging inventory ahead of demand, this pulls the cash outflow closer to the sale. Duty may also be paid before acceptance (Art. 9(2)), and qualifying compliant taxpayers can apply to settle a month's assessments on the last day of that month (Art. 9(3)).

You can clear in batches. Declare and release only the quantity you need, leaving the rest as foreign goods. You are not prepaying tax on inventory you have not sold.

Unsold stock can go back out. Re-export means foreign goods that arrived in Korea leaving the country again without going through import clearance (Art. 2, subpara. 3). Once you file the import declaration, that door closes. For a first shipment into an unproven market, this is where the bonded option earns its keep.

Storage costs money, of course, and the comparison is simple: the financing cost of the deferred tax against the storage fee for the same period. Fast-moving stock usually clears immediately; high-duty, slow-moving stock is where bonded storage holds up.

One boundary worth keeping straight: bonded storage periods are customs rules, while the charges for holding containers too long come from your contract with the carrier and terminal. Those are covered separately in demurrage and detention.

How do bonded factories and free trade zones differ?

A bonded factory is taxed on the finished product by default. Goods produced from foreign materials are treated as having arrived in Korea from abroad (Art. 188), so the finished item's tariff code and rate apply.

There is an alternative. Under raw material taxation, if you apply to customs before filing the import declaration, duty is assessed on the nature and quantity of the raw materials as of the use declaration (Art. 189(1)). Where the finished-goods rate exceeds the input rate, that single application decides the bill. Qualifying factories may apply on a blanket basis for up to a year, by material, by product, or for the whole factory (Art. 189(2)). Materials must be declared for use before they are used (Art. 186(1)).

A free trade zone sits on different law altogether. Because Article 3(1) of the FTZ Act disapplies the Customs Act as a rule, putting goods into the zone is not clearance but an entry declaration (Art. 29(1)), and no duty is paid at that point.

Tax arises when goods leave for the customs territory, meaning domestic Korea outside the zone. Whether processed or untouched, moving them out requires an import declaration and payment (Art. 29(5)), and they are assessed as foreign goods that arrived in Korea from abroad (Art. 44). Sending them abroad instead is an overseas removal declaration (Art. 30(1)).

The real divergence from a bonded warehouse is the treatment of domestic goods. Domestic goods that a resident enterprise declares into the zone are treated as exported, so duty is exempted or refunded (Art. 45(1)) and VAT zero-rating applies (Art. 45(2)). Placing Korean-made goods into the zone is treated much like exporting them, which opens up refund planning. The refund mechanics are covered in customs duty drawback.

Obligations come with it. Resident enterprises must record and manage the description, specification, quantity, and value of goods entering, used, produced, and leaving (Art. 38(1)), and if a customs audit finds an inventory shortfall, the corresponding duties are collected without delay (Art. 39(4)). Inventory accuracy is a tax exposure, not just a warehousing metric.

One caveat: an FTZ is not unlimited storage. In airport and port areas designated by the Commissioner, the Customs Act rules on release, storage periods, and disposal by sale apply (Art. 37(2)).

What happens if the storage period runs out?

Customs may publish notice and sell the goods once the storage period for foreign goods in a bonded area expires (Art. 208(1)). Live animals and plants, goods that are spoiling or likely to spoil, goods that could damage the warehouse or other cargo, and goods that would lose significant commercial value may be sold on notice even before the period runs out.

Warning comes first. For goods in a designated storage place or bonded warehouse, the removal notice must be issued at least 30 days before the storage period expires (Notice Art. 7(1)). For commercial bonded warehouses the operator issues it; for designated storage places the cargo manager does (Art. 6(2)).

There is a deadline running the other way too. Goods in bonded areas specified by the Commissioner must be removed within 15 days of acceptance of the import declaration (Art. 157-2). Paying the tax does not buy indefinite storage, though customs can approve an extension.

Five things to check before you stage cargo in Korea

1. Which facility takes the cargo. Six months and two months look alike on a rate sheet. Pier-side warehouses at Busan and Incheon, container-only warehouses, and airport-zone warehouses get two.
2. Whether the 30-day declaration deadline is on the calendar separately. It runs independently of storage, counted from the date of entry.
3. Whether bonded transport is needed. Ten days ocean, five days air to reach the destination, and any storage period already elapsed carries over.
4. Whether deferring the tax beats the storage fee. Run it on duty amount and turnover, and for a first shipment price in the value of keeping the re-export option.
5. Whether a bonded factory or FTZ belongs in the plan. Raw material taxation, refunds and zero-rating on domestic goods entering an FTZ, and the inventory record obligations all move together.

Bonded handling is not a discount. It is a way to choose when the tax event happens, and the two clocks decide how long that choice stays open.

This guide reflects Korean rules as of August 2026. Storage periods and the scope of late-declaration penalties change by Korea Customs Service notice and vary by facility, so confirm with the Korea Customs Service law portal, the customs office with jurisdiction, and your forwarder and customs broker before shipping.