ACP Explained: Why Every Foreign Company Importing to Japan Needs an Attorney for Customs Procedure

If you want to import goods into Japan as a foreign company without a physical presence in the country, you need an ACP — an Attorney for Customs Procedure (税関事務管理人). There is no workaround, no alternative, and no way to skip this requirement. Without an ACP, your goods cannot clear Japanese customs. Period.

Yet despite being one of the most fundamental requirements for doing business in Japan, ACP remains poorly understood by most foreign companies. This article explains what ACP is, why it exists, what it covers, what it doesn't, and why it matters far beyond Amazon FBA.

The Historical Background: Why ACP Exists

To understand ACP, you need to understand the problem it was designed to solve.

Before ACP: The Wild West of Japanese Imports

Before Japan formalized the ACP system, foreign companies importing goods into Japan faced a fundamental legal gap. Japanese customs law requires that importers be identifiable, reachable, and legally accountable within Japan. But what happens when the importer is a company in Germany, the United States, or China with no office, no employees, and no legal presence in Japan?

The answer, historically, was chaos. Foreign companies would use informal arrangements — asking Japanese business partners, freight forwarders, or even individual acquaintances to act as the "importer of record" on customs documents. This created several problems:

Unclear liability: When goods were mislabeled, duties were underpaid, or prohibited items were imported, Japanese customs had no clear party to hold accountable.
Tax collection gaps: Consumption tax (JCT) on imported goods was difficult to collect from foreign entities with no Japanese presence.
Safety enforcement failures: When imported products caused harm — electrical fires, food contamination, or safety incidents — there was no domestic party responsible for recalls or remediation.
Customs fraud: Without a responsible domestic party, undervaluation of goods, misclassification, and outright smuggling were harder to detect and prosecute.

The Formalization of ACP

Japan's Customs Act (関税法) addressed these problems by creating the ACP framework. The core principle is straightforward: if you are a foreign entity importing goods into Japan, you must designate a person or entity in Japan who will act as your representative for all customs-related matters. This representative — the Attorney for Customs Procedure — becomes your legal proxy in the eyes of Japanese customs.

The system was designed to ensure that Japanese authorities always have a domestic point of contact who can:

Receive official notices and communications from customs
Respond to inquiries about imported goods
Accept legal responsibility for customs compliance
Facilitate customs inspections and audits
Handle duty payments and tax obligations

This isn't a uniquely Japanese concept. Many countries have similar requirements — the EU has fiscal representatives, the US has customs brokers and importers of record, and Australia has its own customs agent requirements. But Japan's ACP system is particularly rigorous in the scope of responsibility it places on the designated representative.

What ACP Liability Actually Means

This is where many foreign companies underestimate the ACP requirement. Being an ACP is not a rubber-stamp formality. The ACP assumes real legal liability.

Customs Compliance Liability

The ACP is responsible for ensuring that all customs declarations are accurate and complete. This includes:

Tariff classification: Goods must be classified under the correct Harmonized System (HS) codes. Misclassification — whether intentional or accidental — can result in penalties, additional duties, and in severe cases, criminal prosecution.
Valuation accuracy: The declared value of imported goods must reflect the actual transaction value. Undervaluation to reduce duty payments is customs fraud, and the ACP can be held liable.
Documentation completeness: All required documents — commercial invoices, packing lists, certificates of origin, inspection certificates — must be provided and must be accurate.
Prohibited and restricted goods: The ACP must ensure that no prohibited items are imported and that restricted items have proper permits and approvals.

Tax Liability

The ACP is the point of contact for customs duty and consumption tax (JCT) payments on imported goods. While the foreign importer ultimately bears the financial obligation, the ACP facilitates payment and can be held accountable if taxes go unpaid.

For goods imported for sale in Japan, the JCT rate is 10% (8% for certain food and beverage items). Customs duties vary by product category — from 0% for many raw materials to over 30% for certain agricultural products. The ACP must ensure these are calculated correctly and paid on time.

Product Liability Implications

While the ACP's primary role is customs-related, the designation creates a de facto domestic contact point for product safety and liability issues. If imported goods cause harm to Japanese consumers, regulatory authorities will contact the ACP as the first point of communication with the foreign importer.

This doesn't mean the ACP assumes product liability in a legal sense — that responsibility remains with the manufacturer and importer. But in practice, the ACP often becomes the intermediary who manages recalls, responds to regulatory inquiries, and coordinates with the foreign company during safety incidents.

Without ACP, You Cannot Import: No Exceptions

Some foreign companies assume that ACP is optional or that there are shortcuts. There aren't. Here's what happens without an ACP:

Amazon FBA shipments: Your goods will be held at the port or airport. Amazon does not act as your ACP. If you ship inventory to Amazon's Japanese fulfillment centers without having an ACP designated, customs will not release the goods.
Direct-to-consumer shipments: Small parcels may clear customs under de minimis thresholds for personal imports, but commercial shipments require proper import declarations — which require an ACP for foreign shippers.
Trade show samples: Even temporary imports for exhibitions require customs clearance. Without an ACP, your trade show samples sit in customs while your booth sits empty.
B2B shipments: Sending goods to a Japanese distributor or retail partner still requires proper customs clearance on the import side. The receiving company may handle import procedures in some cases, but if you're the shipper/seller, your ACP status affects the customs process.

The common misconception: "ACP is just for Amazon FBA sellers." The reality: ACP applies to ALL foreign entities importing goods into Japan, regardless of the business model — FBA, direct shipping, B2B wholesale, consignment, trade shows, or any other arrangement.

What ACP Alone Cannot Solve

ACP gets your goods through customs. But clearing customs is only one step in legally selling products in Japan. There are requirements that ACP does not cover:

Product Safety Certifications

PSE (Electrical Appliance Safety): Required for electrical products. Your ACP cannot substitute for PSE certification — the products must be independently tested and certified before they can be sold.
PSC (Consumer Product Safety): Required for specific consumer products like baby cribs, pressure cookers, and laser pointers.
TELEC (Radio Law): Required for any device with wireless capabilities (WiFi, Bluetooth, cellular). Even if your goods clear customs, selling a WiFi-enabled device without TELEC certification is illegal.

Industry-Specific Regulations

Food Safety: Importing food products requires compliance with Japan's Food Sanitation Act, including ingredient labeling in Japanese, additive restrictions, and potentially quarantine inspections.
Pharmaceuticals and Cosmetics: The Pharmaceutical and Medical Devices Act (薬機法) governs imports of medicines, medical devices, and cosmetics. These require separate licenses and approvals beyond ACP.
Chemical substances: Japan's Chemical Substances Control Law (化審法) requires notification and assessment of chemical substances being imported for the first time.
Agricultural products: Plant and animal quarantine inspections are required for many agricultural imports, independent of the customs clearance process.

Tax Registration

ACP handles customs-side tax obligations (duties and JCT at import). But if you're selling goods in Japan and generating domestic revenue, you may also need a JCT tax representative (納税管理人) to handle your ongoing consumption tax filing obligations. These are related but separate roles — though they can be performed by the same entity.

ACP Beyond Amazon: Every Import Business Needs This

The Amazon FBA use case gets the most attention because it's the most common entry point for foreign sellers into Japan. But ACP is equally critical for:

Direct E-Commerce (D2C)

If you operate your own online store shipping directly to Japanese consumers, you need an ACP for your commercial import shipments. Whether you use a Japanese 3PL warehouse, a fulfillment center, or a bonded logistics facility, the goods must clear customs — and that requires ACP.

Wholesale and Distribution

Foreign manufacturers selling to Japanese distributors or retailers need ACP if they're handling the import side of the transaction. Even if your Japanese partner manages domestic distribution, the import customs procedure requires proper representation.

Manufacturing Supply Chains

Foreign companies importing components or raw materials for assembly or processing in Japan need ACP. This applies to everything from semiconductor components to textile materials to industrial chemicals.

Temporary Imports

Trade show equipment, demonstration units, testing samples, and other temporary imports all require customs clearance. ACP is needed to process temporary import declarations and ensure goods are re-exported or duties paid within the required timeframes.

E-Commerce Marketplace Sellers

Sellers on Rakuten, Yahoo! Shopping, Mercari, and other Japanese e-commerce platforms face the same ACP requirements as Amazon sellers. Any platform that involves physical goods being imported into Japan requires proper customs compliance.

How OPTI Supports Your Japan Import Operations

At OPTI, we provide both ACP (Attorney for Customs Procedure) and JCT Fiscal Representative (納税管理人) services for foreign companies doing business in Japan. Our integrated approach means you have a single partner handling both your customs compliance and your tax obligations.

Our ACP services include:

Customs procedure management: Acting as your designated ACP for all import declarations
Tariff classification support: Ensuring your products are classified correctly to avoid penalties and optimize duty rates
Customs communication: Receiving and responding to all customs authority inquiries on your behalf
Compliance monitoring: Ongoing review of your import operations to identify and address compliance issues proactively

Our JCT Fiscal Representative services include:

JCT registration: Registering your company with the National Tax Agency
Tax return preparation and filing: Working with our partner Certified Tax Accountants to prepare and file your JCT returns
Invoice System compliance: Ensuring your invoicing meets Japan's Qualified Invoice System requirements

Whether you're launching on Amazon FBA, setting up a wholesale distribution channel, or building a direct-to-consumer brand in Japan, proper ACP and JCT compliance is the foundation that everything else builds on. Getting it right from the start saves time, money, and regulatory headaches down the road.

To learn more about our ACP and JCT compliance services, visit OPTI's ACP Service Page.