通関・関税・原産地証明 (customs clearance, tariff, certificate of origin) — the gate every cross-border shipment passes

Wiki route

This entry sits under trade INDEX and documents the border-clearance layer that sits underneath every trade transaction. Read it against its same-domain peer Incoterms 2020 — the Incoterms rule fixes who is responsible for clearing the goods (export and import customs), and this entry explains what that clearance actually involves. The preferential-tariff payoff of origin rules is developed in FTA / EPA / RCEP utilization. For the promotion body that publishes tariff and procedure guidance, cross into the METI orbit via JETRO vs NEXI vs JBIC and the broader policy-finance INDEX.

TL;DR

Before any imported good can move into a country, it must clear customs (通関): the shipment is declared, classified under a tariff code, valued, charged the applicable tariff/duty (関税) and import consumption tax, and released. Three documents do most of the work — the HS classification, the customs value, and (where a preferential rate is claimed) the certificate of origin (原産地証明). In Japan the gatekeeper is 税関 (Japan Customs) under the Ministry of Finance. Getting classification, valuation, or origin wrong is the most common cause of delayed shipments, back-duty assessments, and lost preferential rates.

This layer is invisible until it bites — but it determines landed cost and is the precondition for everything the trade-finance instruments settle.

The three questions customs asks every shipment

Question	Mechanism	Why it matters
What is it?	HS classification — a 6-digit Harmonized System code (WCO), extended to 9 digits in Japan’s tariff schedule	The code determines the duty rate and any quota / licensing / safeguard regime
What is it worth?	Customs valuation — normally the WTO transaction value (price actually paid, with adjustments for freight, insurance, royalties, etc.)	Duty and import tax are levied ad valorem on this value, so the Incoterms delivery point affects it
Where is it from?	Rules of origin — substantial-transformation / value-content tests deciding the economic nationality of the good	Origin decides whether a preferential (FTA/EPA) rate applies and whether anti-dumping / safeguard duties attach

These three determinations together set the landed cost — the price after duty and import tax that actually competes in the destination market.

HS classification — the universal product language

The Harmonized System (HS), maintained by the World Customs Organization (WCO), is a global nomenclature in which every traded good has a code. The first 6 digits are internationally common; countries add national digits (Japan uses up to 9). Classification is not arbitrary — it follows the General Rules of Interpretation — but borderline goods (composite articles, sets, parts vs finished items) generate genuine disputes. A wrong code means a wrong duty rate, and customs can re-classify and assess back-duty. Japan Customs operates an advance ruling (事前教示) system so importers can lock a classification before shipment.

Tariff (関税) — the duty layered on import

The applicable duty rate is read off Japan’s tariff schedule (実行関税率表) by HS code. Several rate columns may apply to the same good:

Rate type	Applies to
General rate (基本税率)	Statutory baseline
WTO bound / MFN rate (協定税率)	Most-favoured-nation rate for WTO members
Preferential rate (特恵税率)	GSP for eligible developing countries
EPA/FTA rate (EPA税率)	Lowest, but only with a qualifying [[trade/japan-fta-epa-rcep-utilization

On import into Japan the good also bears import consumption tax (輸入消費税), collected by customs alongside the duty. The order of preference and eligibility is precisely why origin documentation is worth the administrative effort — the EPA column can be zero, but only if origin is proven.

Certificate of origin (原産地証明) — proving economic nationality

A certificate of origin attests where a good was produced under the relevant rules of origin. Two broad families:

Non-preferential CO — proves origin for general purposes (e.g., country-of-origin marking, anti-dumping scope). In Japan these are issued by the chambers of commerce (商工会議所).
Preferential CO — proves the good qualifies for an FTA/EPA preferential rate. Modern Japanese EPAs increasingly use self-certification (自己申告) by the exporter/importer rather than a third-party certificate, and RCEP allows certification by approved exporters.

The substance behind the certificate is the rules of origin: a good must be either wholly obtained in the country or have undergone substantial transformation there — tested by a change in tariff classification (CTC), a regional value content (RVC) threshold, or a specific processing rule. These tests, and how Japanese firms actually use them, are the subject of FTA / EPA / RCEP utilization.

How clearance interacts with the Incoterms rule

Customs clearance is not a free-floating step — the Incoterms 2020 rule allocates it:

Under EXW, the buyer handles export clearance (awkward, since the buyer is foreign to the seller’s customs).
Under DDP, the seller handles import clearance and pays the destination duty — taking on the classification/valuation/origin risk in a foreign customs regime.
Most rules put export clearance on the seller and import clearance on the buyer.

So the choice of delivery term in Incoterms 2020 directly assigns who bears the customs administrative burden and duty cost documented here. The customs value, in turn, depends on which costs (freight, insurance) the term bundles into the price.

Boundary cases and pitfalls

Misclassification. The single most common error; advance rulings (事前教示) mitigate it.
Undervaluation / related-party pricing. Customs can challenge the transaction value where buyer and seller are related; transfer-pricing and customs valuation can pull in opposite directions.
Origin failure. Claiming an EPA rate without a valid origin basis triggers loss of preference plus back-duty; self-certification shifts the proof burden onto the trader’s records.
Not the same as export control. Tariff/origin is about duty and trade preference; security export control (dual-use, end-user) is a separate METI licensing regime under 外為法 and is out of scope here.

Sources

税関 Japan Customs (English): https://www.customs.go.jp/english/
Japan Customs — Tariff schedule overview: https://www.customs.go.jp/english/summary/tariff.htm
JETRO — trade and tariff information portal: https://www.jetro.go.jp/en/
WCO — Harmonized System nomenclature: https://www.wcoomd.org/en/topics/nomenclature/overview.aspx

[!info] 校核状态 confidence: likely. HS classification, the WTO transaction-value method, Japan’s multi-column tariff schedule (基本/協定/特恵/EPA), import consumption tax collection at the border, chamber-issued vs self-certified origin, and the advance-ruling (事前教示) system are public procedural facts from 税関 / WCO / JETRO. No specific duty rates are quoted — rate columns vary by HS line and change with each EPA and annual tariff revision.