To claim a reduced or zero tariff rate at Japan Customs, an importer must confirm the goods satisfy the origin rule of a specific Economic Partnership Agreement (経済連携協定, EPA), obtain the correct Certificate of Origin (原産地証明書) or self-certification format for that agreement, and enter the matching preferential tariff rate code in the NACCS import declaration before the goods clear. As of 2026, Japan has preferential tariff access with 21 partner countries or blocs, yet a significant share of eligible shipments still clear at MFN (Most Favored Nation) rates because the importer does not check eligibility, obtains the wrong certificate format, or misapplies the origin rule.
Which Countries Does Japan Have an EPA With in 2026?#
The table below covers agreements in force as of the date of this post. "Staging" means tariff elimination is phased over multiple years; consult the agreement-specific tariff schedule for the rate applicable to the current year.
| Agreement | Key Partners | In Force | Notes |
|---|---|---|---|
| RCEP | China, South Korea, ASEAN-10, Australia, New Zealand | 2022-01-01 | 15 members; positive-list approach; ASEAN bilateral EPAs continue in parallel |
| CPTPP (TPP-11) | Australia, Canada, Chile, Malaysia, Mexico, New Zealand, Peru, Singapore, Vietnam | 2018-12-30 (founding); UK 2024-12-15 | 12 members after UK accession; self-certification of origin |
| Japan-EU EPA (JEEPA) | European Union (27 member states) | 2019-02-01 | REX (Registered Exporter) system for EU exporters; 99% EU / 97% Japan tariff line elimination |
| Japan-UK CEPA | United Kingdom | 2021-01-01 | Post-Brexit continuation; starts from Year 3 of JEEPA staging; separate UK-Japan bilateral origin |
| Japan-US Trade Agreement | United States (partial) | 2020-01-01 | Industrial goods and selected agricultural TRQs; no comprehensive goods coverage |
| Japan-Singapore EPA | Singapore | 2002-11-30 | First Japan bilateral EPA |
| Japan-Mexico EPA | Mexico | 2005-04-01 | |
| Japan-Malaysia EPA | Malaysia | 2006-07-13 | |
| Japan-Chile EPA | Chile | 2007-09-03 | |
| Japan-Thailand EPA | Thailand | 2007-11-01 | |
| Japan-Indonesia EPA | Indonesia | 2008-07-01 | |
| Japan-Brunei EPA | Brunei | 2008-07-31 | |
| Japan-ASEAN CEPA | ASEAN-10 (bloc) | 2008-12-01 | |
| Japan-Philippines EPA | Philippines | 2008-12-11 | |
| Japan-Switzerland EPA | Switzerland | 2009-09-01 | |
| Japan-Vietnam EPA | Vietnam | 2009-10-01 | Also covered by ASEAN CEPA and RCEP |
| Japan-India CEPA | India | 2011-08-01 | |
| Japan-Peru EPA | Peru | 2012-03-01 | Also covered by CPTPP |
| Japan-Australia EPA | Australia | 2015-01-15 | Also covered by RCEP and CPTPP |
| Japan-Mongolia EPA | Mongolia | 2016-06-07 |
Where multiple agreements cover the same exporting country, the importer may select the agreement that yields the lower rate on the specific HS code. RCEP and CPTPP both cover Vietnam and Australia, for example, and the preferential rates differ at the tariff-line level. Check both before committing to a Certificate of Origin (原産地証明書) format.
Rules of Origin: What Makes Your Goods "Originating"#
A preferential tariff claim is only valid if the goods satisfy the origin rules of the relevant agreement. Every EPA specifies Product-Specific Rules (PSR) in its schedule. There are three substantive criteria, and the applicable PSR will specify which criterion or combination applies to the HS heading of your product. HS code determination is a prerequisite to any PSR analysis; see the Japan HS classification guide.
Wholly Obtained (WO / 完全生産品)
Goods are Wholly Obtained (完全生産品) when they are entirely obtained or produced in a single party country with no non-originating materials involved. This criterion applies primarily to:
- Live animals born and raised in the country
- Agricultural products harvested there
- Minerals extracted there
- Goods made exclusively from the above
WO is rarely achievable for manufactured goods. The operative criterion will normally be CTC or RVC.
Change in Tariff Classification (CTC)
A CTC rule requires that non-originating inputs used in production undergo a specified change in HS classification between input and output. The PSR specifies the level of change required:
- CC (Change in Chapter): the non-originating input is in a different HS chapter (2-digit level) from the finished product. This is the most demanding standard.
- CTH (Change in Tariff Heading): the non-originating input is in a different HS heading (4-digit level). Most common in RCEP and bilateral EPAs.
- CTSH (Change in Tariff Subheading): change at the 6-digit level. Less demanding; used for goods with complex multi-input assembly.
The CTC rule fails if your product and a key non-originating input share the same HS chapter or heading. Example: assembling electronic components (HS 8538) into a switchboard (HS 8537) within the same chapter (Chapter 85) will fail a CC rule, though it would pass a CTH rule. Always map input HS codes against output HS codes before assuming CTC compliance.
Regional Value Content (RVC) / Qualifying Value Content (QVC)
An RVC rule requires that a minimum percentage of the goods' value be attributable to originating materials and processing. The threshold and calculation method vary by agreement:
- RCEP: typically 40% RVC (Build-Down method) or 40% QVC. Build-Down = (FOB value minus non-originating material value) / FOB value x 100.
- CPTPP: typically 40-45% RVC depending on product. Uses Regional Value Content with Build-Down or Net Cost method.
- Japan-EU EPA: uses a combination of CTC and Value Added (VA) criteria depending on the PSR.
- Bilateral EPAs: vary; most use 40-60% originating content thresholds.
When a PSR offers a choice between CTC and RVC, importers should calculate both and select the criterion their supply chain satisfies most reliably across shipments.
De Minimis / Tolerance Rule
Most EPAs allow a tolerance for small quantities of non-originating materials that would otherwise violate the CTC criterion. The standard tolerance is 10% of the FOB value of the product (RCEP: 10%; CPTPP: 10% by weight for goods in Chapters 1-24, 10% of transaction value for other goods). A product that almost satisfies CTC can therefore still qualify if the non-compliant non-originating input represents 10% or less of the product's value or weight.
De minimis does not override an RVC requirement. If the PSR specifies an RVC threshold with no CTC alternative, the tolerance rule is irrelevant.
Accumulation
Bilateral accumulation is available under all agreements: originating materials from Party A may be used in production in Party B, and the resulting goods are treated as originating in Party B. This is the standard baseline.
Regional accumulation under RCEP is materially broader. Any originating content from any of the 15 RCEP members can be accumulated when determining whether goods qualify under RCEP. A Vietnamese manufacturer using Chinese-origin steel, Malaysian-origin plastics, and Australian-origin minerals can count all of those inputs as RCEP-originating. For regional supply chains, RCEP is therefore practically easier to satisfy than bilateral agreements.
Cumulation is also permitted among the 12 CPTPP members. EU-Japan EPA is bilateral only; EU manufacturers cannot count inputs from non-EU CPTPP members.
Direct Shipment / Direct Consignment
Every agreement requires that originating goods be transported directly from the exporting party to Japan without passing through a non-party country in a way that changes the goods or subjects them to customs supervision. Transit through a non-party is permitted if:
- The goods remain under customs control in the transit country
- No further processing other than unloading, reloading, or operations necessary to preserve them occurs
- Documentary evidence of the direct transit is available (through bill of lading, transit customs documents)
Goods transshipped through a hub country that is not a party to the relevant EPA are the most common source of direct shipment violations in practice. If Vietnamese-origin goods move through Hong Kong with a break in the through bill of lading, or if they are processed at a Hong Kong warehouse, the direct shipment condition may fail even if the goods were legitimately manufactured in Vietnam.
What Certificate of Origin Do You Need for Each Agreement?#
The type of origin evidence required at Japan import depends on the agreement under which you claim preference. These are not interchangeable.
RCEP: Form RCEP-1 or Approved Exporter Self-Declaration
Origin evidence under RCEP takes one of two forms:
(a) Form RCEP-1: a standardised certificate of origin issued by a competent authority (government body or designated issuing body) in the exporting RCEP member. The exporter applies to the designated authority with supporting origin documentation. Japan Customs accepts Form RCEP-1 issued by any of the 15 RCEP competent authorities.
(b) Approved exporter self-declaration (認定輸出者 / approved exporter): an exporter authorised by the competent authority of their RCEP member country may issue a self-declaration of origin, eliminating the need for third-party issuance. This is available in Japan and in several other RCEP members. The declaration must include a specified statement and reference number.
The competent authority for shipments from China is CCIB (China Inspection and Quarantine) or CCPIT (China Council for the Promotion of International Trade), depending on the product category (the China-to-Japan import guide covers the RCEP application to Chinese goods). For ASEAN members, the designated issuing body varies by country.
CPTPP: Exporter, Producer, or Importer Self-Certification
CPTPP allows importer self-certification. Under CPTPP, the origin declaration may be made by:
- The exporter
- The producer (who may provide a written declaration to the exporter)
- The importer, based on their own reasonable reliance on supporting documentation
There is no third-party issued certificate of origin under CPTPP. The self-certification must include specified information (exporter name, importer name, goods description, HS code, origin criterion met, direct shipment statement, and authorised signature). Japan Customs accepts self-certifications from all CPTPP members including the UK following its December 2024 accession.
Importer self-certification under CPTPP carries the documentation burden. If Japan Customs requests verification, the importer must produce the underlying origin records: production records, material sourcing records, and RVC calculations where applicable. Claiming CPTPP preference without documentary backing is the same compliance risk as any unsupported declaration.
Japan-EU EPA: REX System (Registered Exporter) and Statement on Origin
The Japan-EU EPA uses the REX (Registered Exporter System). EU exporters must register in the REX system administered by the European Commission before they can issue an origin declaration. A registered EU exporter places a standardised statement on origin on the invoice or other commercial document. There is no separate certificate form; the statement text is prescribed in the agreement's Protocol on Rules of Origin.
Consignments of EUR 6,000 or less from EU exporters do not require REX registration; the exporter may self-declare without registration for low-value shipments. Above EUR 6,000, REX registration is mandatory.
Before relying on the origin declaration for high-value shipments, Japan importers should confirm their EU supplier's REX registration number.
Japan-UK CEPA: Statement on Origin (REX or Approved Exporter)
The Japan-UK CEPA uses a similar approach to the EU-Japan EPA. UK exporters may issue a statement on origin either as a registered exporter under the UK's equivalent system (UKGSP/approved exporter number) or, for low-value consignments, without registration. UK-specific cumulation rules apply; EU inputs cannot be used for cumulation under the Japan-UK bilateral origin rules.
Japan-US Trade Agreement: Importer Self-Certification (Industrial) and TRQs (Agricultural)
The importer self-certifies origin for industrial goods under the Japan-US Trade Agreement. There is no government-issued CoO. The importer retains supporting documentation. Agricultural preferences are implemented through Tariff-Rate Quotas (TRQs); eligibility and procedures follow MAFF (Ministry of Agriculture, Forestry and Fisheries) quota administration, not standard EPA origin procedures.
Bilateral EPAs: Third-Party Certificate of Origin
For most bilateral EPAs (Singapore, Mexico, Malaysia, Thailand, Indonesia, Philippines, Brunei, Chile, Switzerland, Vietnam, India, Peru, Australia, Mongolia), the standard mechanism is a third-party certificate of origin issued by the designated competent authority in the exporting country. The format is agreement-specific. Common issuers include chambers of commerce, trade promotion bodies, and government customs authorities depending on the country.
Each agreement type requires the following origin evidence:
| Agreement | Origin Evidence Required |
|---|---|
| RCEP | Form RCEP-1 (third-party) or approved exporter self-declaration |
| CPTPP | Self-certification by exporter, producer, or importer; no third-party CoO |
| Japan-EU EPA | Statement on origin from REX-registered exporter (third-party CoO not used) |
| Japan-UK CEPA | Statement on origin; approved exporter or low-value self-declaration |
| Japan-US Trade Agreement | Importer self-certification (industrial); TRQ for agriculture |
| Bilateral EPAs | Third-party CoO from designated competent authority in exporting country |
How Do You Declare an EPA Preference in NACCS?#
Claiming EPA preference is a declaration-time event. Once a customs declaration is submitted and accepted by Japan Customs under the Customs Act (関税法), the tariff treatment applied is locked. Japan Customs does not accept retroactive preference claims after final release of goods under normal circumstances.
Origin Code in the Declaration
The NACCS import declaration (輸入申告) includes an origin country code field and a tariff rate code field. To apply the EPA rate, the declarant must:
(a) Enter the correct origin country code (ISO 2-letter country code of the originating country)
(b) Select the applicable preferential tariff rate code corresponding to the EPA under which the preference is claimed. NACCS maintains agreement-specific rate codes; MFN is the default if no EPA code is entered.
(c) Enter the CoO reference number in the designated field where a third-party certificate is required (RCEP Form RCEP-1, bilateral EPA certificates). For self-certifications (CPTPP, Japan-US), the declaration must reference the self-certification document.
CoO Timing and Physical vs. Electronic Acceptance
The Customs Act (関税法) requires the supporting origin documentation to be available at the time of import declaration filing. Standard practice:
- Physical CoO: must be presented to or retained for Japan Customs before or at the time of declaration. The customs house for the port of entry may call for physical presentation.
- Electronic CoO: RCEP and CPTPP both permit electronic transmission of origin evidence. Japan Customs accepts electronically-transmitted CoO data where the originating country's competent authority supports electronic issuance. For RCEP, NACCS can receive Form RCEP-1 data electronically from countries that have implemented electronic CoO systems.
Physical original documents remain the norm at most ports for bilateral EPA third-party certificates, although Japan Customs practice is evolving toward acceptance of scanned copies with original on file at the importer.
Record Retention
The Customs Act (関税法) requires importers to retain supporting documentation for customs declarations for five years from the date of import. For EPA preference claims, this includes:
- The origin certificate or self-certification
- Any producer's declarations relied upon (for CPTPP importer self-certification)
- Bill of lading or airway bill evidencing direct shipment
- Commercial invoice and packing list
- For RVC-based claims: the RVC calculation worksheet and underlying material cost data
- For CTC-based claims: records showing the HS codes of non-originating inputs
The five-year retention obligation under 関税法 is not the exporter's problem after shipment. It is the Japan importer of record's obligation. Where the importer is relying on a producer's declaration (common under CPTPP), the importer should obtain that declaration in writing and retain it in the same file as the self-certification.
Where the origin analysis, certificate mechanics, and NACCS filing need to be sequenced alongside customs clearance itself, route the combined workflow through the ACP service line.
Why Do EPA Preference Claims Fail?#
PSR Mismatch
The most frequent failure. An importer applies CTC and assumes the finished product's different HS heading from the inputs satisfies the rule. The PSR for that specific HS heading, in that specific agreement, requires CC (Change of Chapter), but the key input is in the same chapter as the output. The claim fails at verification.
The mitigation is to map PSRs at the product level before the first shipment. Do not assume that CTC is satisfied simply because the finished HS code and the input HS code look different at the 6-digit level.
RVC Calculation Error
RVC calculations are based on transaction values and require consistent methodology. Common errors:
- Using FOB value inconsistently with ex-works material prices (mismatched basis)
- Including costs that are not eligible originating content (non-party overhead, management fees)
- Failing to recompute when material sourcing changes mid-production run
A RVC calculation valid at a previous shipment may fail when a supplier is changed, input prices shift, or the producer moves to a lower-cost input sourced from outside the agreement area.
Direct Shipment Violation
Transshipment through a non-party country is the second most common verification failure. The risk is highest for goods moving through major hub ports (Hong Kong, Singapore, Rotterdam) on consolidated or multi-stop services. Evidence required to demonstrate that the direct shipment condition is met includes a through bill of lading naming Japan as the final destination, transit customs documents from the hub country, and warehouse receipts (if transited in a free zone) confirming no manufacturing occurred.
If goods are split across multiple bills of lading during transit, origin documentation must cover each consignment individually.
CoO Formatting and Signatory Authority Issues
Japan Customs checks that the origin certificate:
- Is issued by the correct competent authority for the agreement and country
- Contains all required fields with no blank mandatory entries
- Bears the valid signature and official stamp of an authorised signatory
- Covers the goods described in the NACCS declaration (description, HS code, and value must be reconcilable)
Discrepancies between the CoO description and the import declaration are a routine verification trigger. If the certificate says "industrial machinery" and the declaration says a specific HS 8479 subheading, Japan Customs may request clarification.
Backdated CoO Requests
Certificates of origin issued with a date prior to the shipment date, or issued significantly after the goods have arrived, are rejected by Japan Customs. Exporters sometimes offer to issue backdated or retrospective certificates when the original was forgotten. This practice creates a false document risk for the Japan importer. Retrospective certificates are not accepted as valid origin evidence under standard EPA procedures, and presenting one is a compliance violation under the Customs Act (関税法).
What Happens If Japan Customs Audits Your EPA Claim?#
Claiming preferential tariff treatment does not end the compliance process. Japan Customs has the authority under the Customs Act (関税法) to conduct post-clearance audits and origin verification for up to five years from the date of import.
How Verification Works
During verification, Japan Customs may:
(a) Request the importer to produce origin documentation retained under the five-year rule
(b) Issue a verification request to the competent authority of the exporting country (where the EPA contains a verification cooperation provision) asking the authority to confirm that the certificate it issued is genuine and that the goods meet the origin criteria
(c) Conduct a direct visit to the exporter or producer in the exporting country, in coordination with that country's customs administration (available under RCEP and CPTPP)
If Japan Customs concludes that origin criteria were not met, it will issue a corrected duty assessment for the unpaid duty differential, potentially covering all shipments under the same origin certification within the five-year window.
Burden of Proof
The burden of supporting an EPA preference claim rests with the Japan importer of record. That burden is why importer self-certification under CPTPP carries real risk: the importer is asserting origin based on their own review, and they must be able to defend that assertion with documentation if called upon. Under the 関税法, an importer who cannot produce adequate supporting documentation loses the preferential treatment and owes back-duty plus interest.
Systemic Risk: Multiple Shipments on the Same Origin Basis
When an importer uses the same producer's declaration, the same RVC calculation, or the same approved exporter self-declaration across repeated shipments, a successful challenge to one shipment can trigger reassessment of all covered shipments. Importers with high-volume EPA claims should periodically revalidate the underlying origin basis rather than relying on a single certification indefinitely.
Is EPA Preference Worth Claiming for Your Shipment?#
Not every EPA-eligible shipment justifies the documentation overhead. The decision depends on three variables: the MFN duty rate on the specific HS code, the shipment value, and whether the shipment is a one-off or recurring.
A useful working threshold:
(a) If the applicable MFN rate is 0% (or effectively zero after staging), there are no savings and no reason to incur origin documentation costs. This applies to a large share of industrial goods already at 0% under Japan's MFN schedule.
(b) If the duty savings on a single shipment exceed approximately JPY 50,000, the time and cost of obtaining origin certification is typically justified. For recurring shipments, the threshold is lower because the documentation overhead is largely a one-time setup cost per supplier.
(c) For agricultural products and textiles/apparel, where MFN rates can reach 9-20% and above, EPA preference is almost always economically significant and should be pursued systematically.
The relevant comparison is always: MFN duty payable vs. EPA duty payable vs. cost of obtaining and maintaining the required origin documentation for that supply chain. For readers who are new to the Japan tariff structure, the duty calculation framework is covered in the Japan customs duty guide. Customs valuation (the CIF base on which all duties are calculated) is addressed in the customs valuation guide.
Worked Example: Vietnam-Origin Industrial Goods vs. Apparel#
Example A: Industrial Machinery Component (HS 8479.89), Vietnam Origin, $100,000 CIF
MFN tariff rate for HS 8479.89 (other machinery not elsewhere specified): 0% under Japan's MFN schedule for this heading.
RCEP preferential rate: 0% (staged to zero for this heading under RCEP).
CPTPP preferential rate: 0% (Vietnam is a CPTPP founding member; industrial machinery typically at 0%).
With MFN already at 0%, EPA preference produces zero tariff savings on this shipment. No origin documentation overhead is justified. Declare at MFN and do not incur the cost of a Form RCEP-1 or CPTPP self-certification.
Always verify the current-year rate for the specific HS subheading in the Japan tariff schedule, as staging schedules move annually. The general principle that many industrial goods are at 0% MFN holds, but HS-level confirmation is required.
Example B: Women's Cotton Trousers (HS 6204.62), Vietnam Origin, $100,000 CIF
MFN tariff rate for HS 6204.62: 9.1% (apparel heading; Japan maintains significant MFN protection for clothing).
CPTPP preferential rate for Vietnam: 0% (fully staged to zero; Vietnam ratified CPTPP as a founding member and apparel from Vietnam has completed its tariff elimination staging).
RCEP preferential rate for Vietnam: also 0% for this heading under RCEP staging as of 2026.
Duty payable at MFN is $100,000 x 9.1% = $9,100 per shipment. Duty payable under CPTPP or RCEP is $0.
Under CPTPP, the importer self-certifies. The exporter provides a producer's declaration. The importer retains both. Documentation setup is primarily a one-time supplier onboarding activity.
Under RCEP, a Form RCEP-1 must be obtained from Vietnam's competent authority per shipment (or the exporter uses approved exporter self-declaration if registered). There is a per-shipment administrative cost.
Both agreements achieve the same zero-rate outcome on this heading for Vietnam. CPTPP importer self-certification has a lower per-shipment administrative burden because no third-party certificate issuance is required. RCEP approved-exporter self-declaration (if the Vietnamese exporter holds that authorisation) achieves a similar result. For a first shipment where the exporter's CPTPP compliance documentation has not been validated, RCEP Form RCEP-1 may be the lower-risk starting point because it involves third-party competent authority issuance.
For a recurring import program: establish CPTPP self-certification with the supplier, validate the producer's declaration and RVC calculation once, and apply it across shipments. Review annually or when the supplier's material sourcing changes.
Practical Decision Frame#
Before each new import origin/agreement decision, the relevant questions are:
(a) What is the MFN rate for this HS code? If 0%, stop here.
(b) Which EPAs cover the country of origin? Which produces the lowest preferential rate for this HS code in the current staging year?
(c) Can the goods satisfy the PSR for the chosen agreement (WO, CTC, or RVC)?
(d) What type of origin evidence does the chosen agreement require, and can the exporter provide it on schedule?
(e) What is the per-shipment duty saving? Does it justify the documentation overhead on a one-off basis? On a recurring basis?
(f) Is the supply chain stable enough that origin qualification will hold across future shipments, or will changes in input sourcing require periodic revalidation?
The Tariff Law (関税定率法) provides the statutory authority for preferential tariff rates; the Customs Act (関税法) governs the declaration procedure, documentation requirements, and record retention obligations. Both must be satisfied for a valid preference claim.
Frequently Asked Questions#
Can I claim an EPA preference after my shipment has already cleared Japan Customs?
A retroactive preference claim after final release is not accepted by Japan Customs under normal circumstances. Once a customs declaration is accepted under the Customs Act (関税法), the tariff treatment applied is locked. The origin evidence and the preferential rate code must both be in hand and entered in NACCS at the time of declaration, so confirm origin eligibility before the shipment departs, not after it lands.
Do I need a government-issued Certificate of Origin for every EPA?
Not every EPA requires one. RCEP and most bilateral EPAs use a third-party Certificate of Origin issued by a designated competent authority, but CPTPP allows the exporter, producer, or importer to self-certify with no government-issued form at all, and the Japan-EU EPA and Japan-UK CEPA use a Registered Exporter (REX) statement on the commercial invoice instead of a separate certificate. Check the specific agreement's mechanism before assuming a third-party certificate is required.
What happens if Japan Customs decides my goods did not actually qualify for the EPA rate I claimed?
Japan Customs can conduct a post-clearance origin verification for up to five years after import, and if it concludes the origin criteria were not met, it issues a corrected duty assessment for the unpaid duty differential, potentially across every shipment that relied on the same origin certification. The burden of proof rests with the Japan importer of record, so retain the origin certificate, the RVC or CTC working papers, and the shipping documents for the full five-year window.
This article is informational only and does not constitute legal, tax, or regulatory advice. Consult a qualified advisor before acting on the content. Last updated: September 2026.