The same product, supplier or transport route does not necessarily justify the same customs regime code. The code must reflect the legal and commercial substance of the transaction, ownership of the goods, intended use, manufacturing model, enterprise status and corresponding tax treatment. Reusing a code because “we used it last time” can distort the entire compliance chain—from duty treatment and material supervision to finalisation reports and change-of-use procedures. This guide provides a transaction-based method for determining the appropriate import or export regime before an electronic declaration is submitted.

QUICK FACTS

What is a regime code?

A declaration code identifying the relevant customs procedure and regulatory purpose of an import or export transaction.

Not selected by product name

The same HS code may move under ordinary trade, export manufacturing, processing, export processing enterprise, temporary import or re-export regimes.

Not selected by history

Prior acceptance does not prove that the same code is correct where the contract, ownership, use or cargo flow has changed.

Core principle

Analyse the transaction first and match the code second—never select a familiar code and reshape the documents around it.

Illustration for Customs Regime Classification: Why Businesses Must Not Choose a Code by Habit — Illustration of the logistics topic, document or operation discussed in the article.

SCOPE OF APPLICATION

This article applies to domestic enterprises, foreign-invested enterprises, export processing enterprises, processors, export manufacturers and parties involved in sale, lease, loan, warranty, repair, return, temporary import–re-export or temporary export–re-import transactions.

It focuses on selecting the regime indicator on an electronic customs declaration. Bonded warehouses, duty-free goods, aid, gifts, diplomatic goods, petroleum, transit cargo and other special arrangements require additional review of sector-specific rules and local customs guidance.

KEY TERMS

Term	Meaning	Classification relevance
Customs regime code	A code identifying the import/export operation on the customs system.	Identifies the customs procedure, regulatory model and related declarations; it does not by itself create an entitlement to exemption, non-taxable treatment, refund or non-collection.
Intended use	How goods will be used: sale, consumption, production, processing, re-export, repair, etc.	A primary factor distinguishing regimes.
Processing	Production carried out for a principal under a processing contract.	Requires review of material ownership, contract terms and product-delivery obligations.
Export manufacturing	An enterprise organises production of export goods using imported or other materials.	Differs from processing in contractual structure, operational control and material management.
Export processing enterprise (EPE)	An enterprise operating under the customs regime applicable to a non-tariff zone.	Goods must be distinguished by source, function and use in export-processing activities.
Change of use	Goods cleared for one purpose are later used for another.	May trigger a new declaration, current management policy and tax obligations.

CLASSIFICATION MECHANISM

The regime describes the transaction, not merely the goods

The HS code identifies what the goods are for tariff and product-policy purposes. The customs regime code identifies the transaction relationship and regulatory treatment. These data layers interact but cannot replace each other.

Tax principle: A regime code is a declaration indicator used to identify the transaction. Exemption, non-taxable treatment, refund or non-collection applies only when the transaction and supporting file satisfy the relevant tax-law conditions.

Seven questions to answer before selecting a code

Who owns the goods and materials? The Vietnamese enterprise, foreign principal, processing customer or lessor?
What is the transaction basis? Sale, processing, lease, loan, warranty, repair, return or transfer?
How will the goods be used? Domestic sale, domestic production, export manufacturing, processing or EPE use?
Must the goods return? Temporary import, temporary export, re-import, re-export, repair or exhibition?
What is the enterprise model? Domestic company, EPE, processor or export manufacturer?
Which tax conditions does the transaction satisfy under law? Assess exemption, non-taxable treatment, refund or non-collection only after the transaction substance and supporting evidence are fixed; never select a code to engineer a preferred tax result.
Is there a prior declaration to link? Returned goods, change of use, re-export of imported goods or disposal of surplus materials?

Control point: A change in ownership, intended use or consignee may change the regime even when the product and HS code remain the same.

COMMON TRANSACTION MATRIX

Transaction group	Substance	Common codes to review	Decisive data	Typical mistake
Business/consumption import	Imported for sale, distribution, consumption or ordinary business use.	A11 and other applicable codes	Sales contract, post-import use and declaration location.	Using A11 for every shipment because the importer is a trading company.
Import for domestic production	Materials, equipment or goods serving domestic manufacturing operations.	A12 and related codes	Production plan, asset/material function and expected output.	Confusing A12 with E31 merely because some future output may be exported.
Processing for a foreign principal	A processing contract exists and material ownership/product delivery must be established.	E21 input; E52 output where applicable	Processing contract, material annexes, norms and delivery instructions.	Confusing processing with export manufacturing.
Export manufacturing	The enterprise organises production of export goods and manages materials under the export-manufacturing regime.	E31 input; E62 output where applicable	Production plan, material sources, export products and management records.	Selecting E31 only to seek tax treatment without the required operating model.
EPE operations	Goods enter, leave or are used in export-processing activities.	E11, E15, E13, E42… depending on source and use	EPE status, source, function, counterparty and destination.	Using one code for all EPE goods.
Ordinary commercial export	Goods exported under an ordinary sales transaction.	B11 where applicable	Origin of goods, production/processing history and sales contract.	Using B11 for processed or export-manufactured products.
Export of previously imported goods	Returned or imported-origin goods exported within the prescribed scope, often linked to the import declaration.	B13 where applicable	Original import declaration, condition of goods and processing status.	Using B11 merely because an export invoice exists.
Temporary movements	Goods enter or leave temporarily and are expected to return, such as leased, repaired or exhibition goods.	Relevant G-code group	Time limit, ownership, temporary purpose and return obligation.	Selecting by whether goods are new/used instead of the temporary nature of the transaction.

These codes are common references, not an automatic selector. Businesses must read the complete usage instructions and notes under Decision 1357/QD-TCHQ and the customs rules in force.

DOCUMENTS AND DATA TO VERIFY

Document/data	Owner	Information to lock	Risk if missing
Contract, PO and annexes	Sales/Procurement	Parties, ownership, delivery terms and transaction purpose.	Cannot distinguish sale, processing, lease or return.
Processing contract/export-manufacturing records	Production/Customs/Legal	Materials, products, norms, ownership and delivery instructions.	Confusing E21–E52 with E31–E62.
Goods-use plan	Production/Warehouse/Finance	Domestic sale, domestic production, export, EPE use or re-export.	Code based on an unapproved intention.
Investment/EPE status documents	Legal/Investment	Export-processing scope, location and supervision conditions.	Incorrect application of non-tariff-zone treatment.
Prior declarations and origin records	Customs/Tax accounting	Declaration number, former regime, remaining quantity and goods condition.	Cannot support returns, change of use or export of imported goods.
Invoice, packing list and transport document	Supplier/Customs	Seller, buyer, shipper/consignee, description and quantity.	Commercial chain conflicts with the declared regime.
Tax and specialised-policy review	Tax/Compliance	Exemption/non-taxable/refund conditions, licences and inspections.	Code selected for a desired tax result rather than legal conditions.

PRE-DECLARATION CLASSIFICATION PROCESS

Map the transaction: identify seller, buyer, owner, shipper, consignee and payer.
Confirm ownership: establish who owns the goods and materials.
Lock the intended use: document whether goods will be sold, produced, processed, used in an EPE, temporarily imported or re-exported.
Verify the management model: confirm that processing, export manufacturing or EPE records and controls actually exist.
Match the code table: read the full name, usage instructions and notes under Decision 1357/QD-TCHQ.
Review tax and product policy: identify tax effects, permits and conditions.
Apply two-level approval: the preparer states the basis; a reviewer checks the contract, cargo flow and linked declarations.
Monitor after clearance: where use or condition changes, assess a new procedure rather than automatically reusing the old code.

Recommended audit trail: retain a regime-classification sheet showing the transaction map, proposed code, legal basis, linked declarations, tax conditions and approver.

COMMON RISKS AND ERRORS

Error	Cause	Possible impact	Control
Copying the prior code	Only product and supplier are compared.	The new transaction is misrepresented and may require explanation or corrective procedures.	Recheck the seven substance criteria.
Selecting for a desired tax result	Tax exemption/non-taxable treatment is targeted before eligibility is verified.	Potential duty assessment, late-payment interest or sanctions depending on facts and consequences.	Assess legal conditions independently of the desired tax outcome.
Confusing processing and export manufacturing	Ownership and contract structure are not analysed.	Incorrect material/product management and finalisation reporting.	Prepare an ownership–contract–norm–output matrix.
One code for all EPE goods	Only enterprise status is considered.	Materials, equipment and other goods are treated incorrectly.	Classify by source, function and EPE use.
Missing prior-declaration link	Original import or return data are unavailable.	Origin, quantity and follow-on procedure cannot be supported.	Lock the declaration number and remaining quantity first.
Use changes without customs review	Warehouse/production does not inform customs staff.	Goods are used outside declared conditions, triggering declaration and tax issues.	Create cross-functional change-of-use alerts.

LEGAL BASIS AND OFFICIAL SOURCES

Instrument/source	Authority/effect	Role	Key point
Consolidated Customs Law 54/VBHN-VPQH	Office of the National Assembly, 23 March 2026	Declaration accuracy, records, inspection and declarant responsibility.	The declarant is responsible for submitted data.
Decision 1357/QD-TCHQ	General Department of Customs; effective 1 June 2021	Import/export regime code table and usage guidance.	Read the instructions and notes, not only the short code name.
Decree 167/2025/ND-CP	Government; effective 15 August 2025	Amends detailed customs procedure, inspection and supervision rules.	Review current rules on change of use, processing, export manufacturing and EPEs.
Circular 121/2025/TT-BTC	Ministry of Finance; effective 1 February 2026	Amends customs, duty and tax-administration guidance.	Apply the documents and procedure in force on the declaration date.
Decree 182/2025/ND-CP	Government; effective 1 July 2025	Amends the import-export duty framework under Decree 134/2016/ND-CP, as amended by Decree 18/2021/ND-CP.	Exemption, refund and other duty treatment must be assessed independently; the regime code does not replace supporting evidence.
Customs guidance issued in April 2026	Vietnam Customs, 2026	Confirms continued practical reliance on Decision 1357.	This is a case-specific official reply, not a rule of general application. It is cited only to show that Vietnam Customs continued to rely on Decision 1357 in 2026.
Decree 169/2026/ND-CP	Government; effective 1 July 2026	Administrative sanctions in customs.	Consequences depend on the conduct, fault, duty impact and case facts.

This English version is for operational reference only and is not an official legal translation.

FAQ

1. Can one HS code be declared under different regimes?

Yes. The HS code identifies the goods; the regime reflects transaction substance and regulatory purpose.

2. May a business reuse a code from a previously cleared declaration?

Only where the new transaction has the same substance and still falls within the code guidance. Prior clearance is not permanent approval.

3. Who is responsible for the final regime selection?

The customs declarant is responsible for declared data. Internal review should involve sales, procurement, production, warehouse, tax, legal and customs teams.

4. Is E31 appropriate merely because goods may later be exported?

No conclusion should be drawn from a sales intention alone. The export-manufacturing model, material management, production records and tax conditions must be reviewed.

5. Can an incorrect regime be corrected?

The solution depends on timing, declaration status, the nature of the error and whether the goods’ use has changed. Supplementary declaration, cancellation, a new declaration or tax treatment may apply.

6. Does using a customs agent remove the importer’s responsibility?

No. An agent can only classify correctly when the business provides complete contracts, ownership, intended use and source records. The principal must control the input data and authority granted.

7. Does using the correct regime code automatically secure a duty exemption or refund?

No. The code must fit the transaction, but exemption, non-taxable treatment, refund or non-collection still depends on the statutory conditions and supporting evidence for the specific case.

APPLICATION NOTE: The regime table cannot replace review of the actual transaction file. Conclusions must consider the complete contract, ownership, intended use, enterprise status, cargo flow, linked declarations and law effective on the registration date.

TGIMEX IMPLEMENTATION SUPPORT

TGIMEX helps businesses turn the article into a shipment-ready checklist, covering input-data review, dossier preparation, milestone control, and coordination with the relevant parties.

Convert guidance into checks

Assign an owner and deadline to every operational control point.

Reconcile shipment data

Compare booking, transport, commercial, customs, and delivery evidence.

Manage operational risk

Record discrepancies, actions, and decision evidence to prevent recurrence.

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