A Commercial Invoice is the core document of an international sale: it records the seller’s claim for payment and provides key data for customs valuation, contract review, transport documents, packing information and import/export declarations. An invoice may look complete yet still create clearance delays when the Incoterms rule, currency, product description or transaction parties are inconsistent. This article separates legally required information from the minimum operational data businesses should control before issuing and declaring an invoice.

QUICK FACTS

Nature

A Commercial Invoice is issued by the seller and states the goods, price, currency and transaction terms.

No single global form

Mandatory content depends on the applicable law, contract, payment method and document purpose.

Vietnam customs dossier

Export and import dossiers must be distinguished: invoice submission rules, exceptions and electronic-invoice data retrieval are not identical.

Key control

Invoice data must align with the contract, Packing List, transport document, C/O, permits and customs declaration.

SCOPE

This article covers international sales moved by sea, air, road or rail and is intended for exporters, importers, documentation teams, accountants, buyers and customs declarants.

Do not apply the same checklist mechanically to gifts, non-payment samples, processing, leased or borrowed goods, temporary import–re-export, or transactions involving export-processing enterprises. Depending on the customs regime, an equivalent document may be used or a Commercial Invoice may not be required for submission.

Note: A foreign supplier’s Commercial Invoice is not automatically the same document as a Vietnamese VAT e-invoice. The issuer, transaction nature and customs procedure must be identified correctly.

KEY TERMS

Term	Meaning	Operational role
Commercial Invoice	Seller-issued invoice for a commercial transaction.	Supports payment, customs value and document reconciliation.
Proforma Invoice	Preliminary invoice issued before the final transaction.	Used for quotation, licence application, L/C opening or deposit; normally not the final invoice.
Invoice Number / Date	Unique reference and issue date.	Connects customs, banking, accounting and logistics records.
Incoterms® Rule	Delivery rule plus the named place or port.	Allocates costs and risks and supports customs value adjustments.
Transaction Value	Transaction value subject to customs valuation conditions.	A principal customs valuation basis; not automatically every “Total” printed on the invoice.
Equivalent Document	Document with equivalent evidentiary value.	May be used where a standard commercial invoice is unavailable or not required.

NATURE AND OPERATING MECHANISM

1. A transaction data source—not merely a request for payment

The invoice links commercial, logistics and customs information. Commercial teams use it to confirm price and payment; logistics teams use it to identify the shipment; customs teams use it to review value, product description, quantity, delivery terms and related adjustments.

2. Why there is no universal list of mandatory fields

A commercial invoice arises from a contract and may be affected by export-country rules, import-country rules, banking requirements, letters of credit, foreign exchange controls, origin rules and product-specific regulation. Businesses should distinguish legal fields, contract/banking fields and operational control fields.

3. Use in Vietnam customs procedures

Imports: where the buyer must pay the seller, the customs dossier uses a commercial invoice or an equivalent document. A commercial invoice is not required for goods imported to perform a processing contract for a foreign trader, or for imported goods without an invoice where the buyer is not required to pay the seller.
Exports: where the buyer must pay the seller, the dossier includes a commercial invoice or equivalent document. If a Vietnamese electronic invoice under Decree 123/2020/ND-CP, as amended by Decree 70/2025/ND-CP, has been issued before customs declaration registration, the declarant is not required to submit the Commercial Invoice again and customs may retrieve the data under the applicable rules. This mechanism does not make a foreign supplier’s Commercial Invoice a Vietnamese tax e-invoice.

Common misunderstanding: the electronic-invoice submission relief above relates to Vietnamese export e-invoices and must not be extended to foreign Commercial Invoices used for imports.

INFORMATION THAT SHOULD APPEAR ON A COMMERCIAL INVOICE

The following matrix classifies information by practical importance rather than claiming one universal legal checklist.

Data group	Information to show	Control level	Risk if missing or incorrect
Document identity	Commercial Invoice title; invoice number; issue date; contract/PO/L/C reference where relevant.	Minimum.	Poor traceability and incorrect customs or payment reference.
Seller and buyer	Legal names, addresses and countries; tax/business IDs where required.	Minimum.	Wrong transaction parties or mismatch with contract/C/O.
Goods description	Commercial name, model/SKU/part number, specifications and sufficient identifying characteristics.	Minimum and declaration-ready.	Weak HS classification, licensing or physical inspection support.
Quantity and UOM	Quantity per line and commercial unit; package total where useful.	Minimum.	Mismatch with Packing List and declaration.
Unit price and amount	Unit price, line amount, invoice total, discounts and surcharges.	Minimum.	Incorrect customs value or payment amount.
Currency	Clear ISO currency code such as USD, EUR, CNY or JPY.	Minimum.	Exchange-rate and payment errors.
Delivery terms	Incoterms® rule and named place/port.	Operationally essential.	Unclear cost scope and customs value adjustments.
Payment terms	T/T, L/C, D/P, D/A and payment timing.	Contract/banking dependent.	Mismatch with contract, L/C or banking documents.
Origin/manufacture	Country of Origin or Country of Manufacture where relevant.	Required when origin, labelling or FTA rules demand it.	Conflict with C/O, labels or origin declaration.
Signature/authentication	Name, title, e-signature or other seller authentication.	Depends on law, contract and system.	Authenticity queries by banks or authorities.

Must the HS code appear? Not in every transaction. It may assist identification, but it does not replace the importer’s classification responsibility in the country of import.

COMMERCIAL INVOICE VS. SIMILAR DOCUMENTS

Document	Primary purpose	Typical timing	Can it replace a Commercial Invoice?
Proforma Invoice	Quotation or preliminary transaction document.	Before the final sale.	Normally no once the final price and payment obligation exist.
Packing List	Packing, package count, dimensions and weights.	Before shipment.	No; it usually does not establish transaction value.
Vietnamese Tax/VAT E-invoice	An electronic tax invoice governed by Vietnamese law.	At the statutory invoice-issuance time.	For an export dossier, it may remove the need to resubmit a Commercial Invoice when issued before customs-declaration registration and retrievable by customs. It does not replace a foreign supplier’s Commercial Invoice in an import dossier.
Debit Note / Credit Note	Increase or decrease a receivable or transaction amount.	After an adjustment.	Not automatically; it must be read with the original invoice.
Customs Invoice	Country-specific customs invoice format.	When required by the importing country.	May supplement or replace another format only under that country’s rules.

DOCUMENTS AND DATA TO CHECK

Contract/PO: parties, goods, price, currency, Incoterms and payment terms.
Packing List: quantity, UOM, packages, weights and packing details.
B/L or AWB: shipper, consignee, route and package information.
C/O: invoice number/date, product description, origin and exporter/producer.
Permits and inspections: model, use, specifications, brand and quantity.
Customs declaration: procedure code, value, price terms, payment method, description, quantity and UOM.
Payment evidence: beneficiary, invoice reference, amount and currency.

Data consistency matrix

Data field	Invoice	Packing List	B/L or AWB	C/O	Declaration
Seller/exporter	Yes	May appear	Shipper	Exporter/producer	Foreign partner
Buyer/importer	Yes	May appear	Consignee	Importer if required	Importer
Goods/model	Yes	Yes	Usually general	Yes	Detailed
Quantity	Yes	Yes	May use packages/weight	May appear	Yes
Value/currency	Yes	Normally no	No	May be referenced	Yes
Invoice no./date	Source	May reference	Usually no	Usually referenced	Yes

PRE-DECLARATION INVOICE REVIEW PROCESS

Identify the transaction type.
Match commercial data to the contract/PO.
Match product data and quantity to the Packing List and technical files.
Match transport parties and shipment data to the B/L or AWB.
Review customs value scope under the Incoterms rule and any adjustments.
Match origin and regulated-product data to the C/O, permits and inspection records.
Approve and lock the invoice version used for declaration.
Retain the invoice with supporting correspondence and amendments for post-clearance review.

COMMON RISKS AND ERRORS

Error	Typical cause	Impact	Control
Overly generic product description	Supplier writes “parts”, “accessories” or “chemical”.	Weak HS, licensing and inspection support.	Add model, material, function and identifying specifications.
Incomplete Incoterms entry	FOB/CIF shown without named port/place.	Unclear included costs.	State rule, named place/port and version where required.
Ambiguous currency	Only “$” is shown.	Value and payment errors.	Use an unambiguous ISO currency code.
Total does not match line items	Formula, rounding or discount error.	Customs query or payment mismatch.	Check subtotal, discount, surcharge and grand total.
Quantity/UOM mismatch	Invoice uses pieces while Packing List uses sets/cartons.	Conversion and inspection issues.	Use an approved conversion table.
Invoice number/date differs from C/O	C/O prepared from an old invoice version.	Preferential-origin document may be challenged.	Lock versions before C/O issuance.
Incorrect legal party name	Trade name or old address used.	Mismatch with contract, payment or licences.	Use approved legal master data.
Invoice differs from actual shipment	Short shipment, over shipment, model substitution or split shipment.	Incorrect declaration and amendment needs.	Issue the final invoice for actual shipped goods.
Exporter HS code copied without review	No import-country classification check.	Wrong HS, tax or policy risk.	Treat invoice HS as reference only.
Proforma used as final invoice	Final invoice not obtained.	Value/payment evidence may be incomplete.	Confirm final document status before declaration.

LEGAL BASIS AND OFFICIAL SOURCES

Source	Role	Note
Customs Law No. 54/2014/QH13 and Law No. 90/2025/QH15	Framework for customs dossiers, declarations, electronic documents and declarant responsibility.	Law No. 90/2025/QH15 took effect on 1 July 2025 and amended parts of the Customs Law.
Circular 38/2015/TT-BTC and Circular 39/2018/TT-BTC	Core customs-dossier rules, including commercial invoices or equivalent documents.	Read together with all effective amendments.
Circular 121/2025/TT-BTC	Amends customs-dossier rules from 1 February 2026, including export/import invoice requirements, submission exceptions and e-invoice data retrieval.	Export and import rules must be analysed separately.
Decree 123/2020/ND-CP and Decree 70/2025/ND-CP	Vietnamese e-invoice framework relevant to customs retrieval of export-invoice data.	These instruments do not equate a foreign supplier’s Commercial Invoice with a Vietnamese tax e-invoice.

Sources reviewed on 20 July 2026. Rules and customs systems may change; check the effective official text and customs guidance when registering the declaration. This translation is for operational reference and is not an official legal translation.

FAQ

Must a Commercial Invoice be signed and stamped?

There is no universal rule. Authentication requirements depend on law, contract, L/C, seller process and authority requirements.

Is an HS code mandatory on the invoice?

Not in every transaction. It may help identification, but the importer remains responsible for customs classification.

Can a Proforma Invoice be used for customs declaration?

For a paid sale with a final price and payment obligation, a Proforma Invoice should not replace the final Commercial Invoice. It may serve as supporting evidence or be considered in a special transaction only after checking the applicable customs regime and dossier requirements.

Is a foreign supplier’s electronic invoice acceptable?

It may be used as an electronic document or copy if authenticity, integrity and dossier consistency are ensured. It is not automatically a Vietnamese tax e-invoice and does not trigger the export e-invoice submission relief described above.

Does a Commercial Invoice prove preferential origin?

Normally no. Preferential treatment requires a compliant origin document under the relevant FTA.

What if the invoice is found wrong after declaration?

Determine whether the error is only in the document or also in declared data, then correct the document and make any required customs amendment.

Must the Invoice match the Packing List exactly?

Fields describing the same fact—such as product, model and quantity—must be consistent, even though each document contains different types of information.

APPLICATION NOTE: Whether a field is legally mandatory depends on the transaction type, countries involved, contract, L/C, product regulation and actual dossier.

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