What Is a Packing List? How to Write One, Required Fields, and How It Differs from an Invoice

You have your export documents underway, you have finished the invoice, and then you stall on the packing list. What goes on it? How is it different from the invoice? Do you even have to make one? Plenty of people first become aware that the document exists only when a customs broker asks them to "please send the packing list as well." And because there is no official, statutory template that dictates exactly how to fill it in, it is an easy document to feel lost with.

This article organizes what a packing list is, in the order of its role, its required fields, and how to write one. Grounded in primary sources, it also covers how the packing list differs from the commercial invoice it is so often confused with, where it sits in the Customs Act and the Order for Enforcement of the Customs Act, and the situations, from customs clearance to letter-of-credit settlement, in which you will actually need it. It is written to be readable end to end as a first article for anyone newly assigned to trade operations or export control.

Packing List at a Glance

Let's capture the whole picture on one page first. Keeping this table in mind before you get into the details makes the rest far less confusing.

Item	Detail
Formal name	Packing list (in English, Packing List, or P/L)
Role	A detailed statement of what is packed into which box, in what quantity, and at what weight and volume
Prepared by	The exporter (shipper)
Main contents	Shipping marks, case numbers, description of goods, quantity, net weight, gross weight, measurement, number and kind of packages
Price / settlement information	Normally not included (that is the invoice's role)
Legal basis	Named as the packing list in Article 61 of the Order for Enforcement of the Customs Act, which implements Article 68 of the Customs Act
Whether submission is required	Submitted when the Director-General of Customs deems it necessary for the permission decision (discretionary submission). In practice close to mandatory for consolidated cargo and L/C settlement

If you want to grasp the full set of documents needed for customs clearance first, reading the checklist of documents required for trade and customs clearance will make it easier to see where the packing list fits among them.

What a Packing List Is: Definition and Role

A packing list is the document known in Japanese as a packing or crating statement. In English it is the Packing List, abbreviated P/L. It lists, package by package, how many units of export cargo are packed, at what weight and volume, and under which shipping marks. It is prepared by the exporter (the shipper).

Put its role in one line and it is the "statement of the cargo's contents and outer form." If the invoice is the bill for the amount owed, the packing list is the document that proves how many boxes the shipment is split into, what is inside each of them, and what the total weight and size add up to. Customs officers cannot open every package and count everything by hand. That is precisely why the make-up of the cargo has to be explained accurately on paper, and it is the packing list that carries out that job.

One more point matters: a packing list is not a document that comes into being on its own. In practice you first make the invoice and then build the packing list from it. If the items and quantities on the invoice diverge from the packing breakdown on the packing list, the credibility of the whole document set comes into question. The two are a set, and they are premised on being consistent with each other.

The Fields and How to Write a Packing List

The format of a packing list is not prescribed by customs law in the sense of "make it exactly this way." Its fields are conventions that have settled into trade practice, and the items or their names shift a little depending on the importing country and the terms of the letter of credit. Even so, the fields you should standardly have on hand are more or less fixed.

Field	English term	How to fill it in
Exporter	Shipper	The shipper's company name and address; match the invoice
Importer	Consignee	The consignee's company name and address; match the invoice
Invoice number / date	Invoice No. / Date	Tie the statement to the invoice it corresponds to
Shipping marks / case numbers	Marks & Nos.	The mark printed on the box and the case number (Case No.)
Description of goods	Description of Goods	Use the same description as on the invoice
Quantity	Quantity	The number of units per item
Net weight	Net Weight	The weight of the goods themselves, excluding packing materials
Gross weight	Gross Weight	The weight including packing materials
Measurement	Measurement	Calculated from the external dimensions after packing (usually CBM, or cubic meters)
Number of packages	Number of Packages	The total number of boxes
Kind of packages	Kind of Packages	The type: cartons, wooden crates, pallets, and so on
Signature	Signature	The exporter's signature

As for the order of writing, the basic flow is to first fill in the header information such as the exporter, importer, and corresponding invoice number, then enter each detail line by package, from shipping marks through kind of packages, and finally consolidate the total number of packages, total net weight, total gross weight, and total measurement in a totals row. The totals are figures that customs, the shipping line, and the importer will each later reconcile, so always make sure they match the sum of the detail lines.

Weight is especially easy to get wrong, so hold onto what each term means. Net Weight is the weight of the product itself, excluding packing materials such as cardboard and pallets. Gross Weight is the weight including those packing materials, and it is the weight actually handled in transport. Measurement is the volume calculated from the external dimensions of the packed box (length, width, and height), and it is used in things like ocean freight rate calculations. As a rule, a packing list states both net weight and gross weight.

Packing List vs. Commercial Invoice

The point that trips people up most in understanding a packing list is how it divides labor with the invoice. Both are prepared by the exporter and both carry descriptions and quantities, so they look alike, but the roles they play split cleanly. Price, trade terms, and payment method are handled by the invoice; the packing breakdown, weight, and volume are handled by the packing list. Remember the rule that a packing list, in principle, carries no price, and you will not get confused.

Comparison point	Commercial invoice	Packing list
Main role	The bill and statement for the cargo (shipping notice)	The statement of packing (what is packed and how)
Main contents recorded	Description, quantity, unit price, amount, trade terms, payment method	Shipping marks, case numbers, description, quantity, weight, measurement, number and kind of packages
Price / settlement info	Recorded (its central content)	Normally not recorded
Weight / volume info	Not required	Net weight, gross weight, and measurement recorded (its central content)
Prepared by	The exporter (shipper)	The exporter (shipper)
Order of preparation	Prepared first	Prepared afterward, based on the invoice
Position in law	A submission document under Article 68 of the Customs Act / Article 61 of the Enforcement Order (at customs' discretion)	Named as the packing list under Article 68 / Article 61 (at customs' discretion)
Can they be combined	Can be combined into one if items and packages are few (invoice cum packing list)	Same as left

For transactions with few line items and a limited number of packages, the invoice and packing list are sometimes combined into a single document. This is called an invoice cum packing list. When there are many items or packages, however, customs, the bank, and the importer each refer to the documents for their own purposes, so preparing them separately is the more practical approach. If you want to understand the contents of the invoice in more detail, reading how to write a commercial invoice alongside this article brings the division of labor between the two documents into three dimensions.

Legal Basis: Where It Sits in Article 68 of the Customs Act and Article 61 of the Enforcement Order

A packing list may have arisen naturally out of trade practice, but it also has a proper home in the law. Knowing where that is means you will not panic when customs asks you to submit one.

The starting point is the Customs Act (Act No. 61 of 1954). Article 67 provides that exports and imports must be declared with the description, quantity, price, and other particulars, and must receive the permission of the Director-General of Customs. Article 68 governs the documents submitted at the time of that declaration: it provides, in substance, that when necessary to decide whether to grant export or import permission, the Director-General of Customs may require the submission of the contract, invoice, and other documents specified by Cabinet Order that are necessary to confirm the contents of the declaration. What matters here is the wording "may require the submission of": it is not a uniform duty for every case but a mechanism where documents are requested at the discretion of the Director-General of Customs.

So what exactly are those "documents specified by Cabinet Order"? The provision that enumerates them is Article 61 of the Order for Enforcement of the Customs Act (Cabinet Order No. 150 of 1954). Listed there are the contract, the invoice, the freight statement, the insurance premium statement, and the packing list, the price list, and others. That packing list is precisely what corresponds to a Packing List. In other words, the packing list is a document written into the law by name as one that customs may require you to submit.

The procedure for the export declaration itself is set out in Article 58 of the Order for Enforcement of the Customs Act: the export declaration form is to be submitted to the Director-General of Customs stating the marks and numbers, description, quantity, and price of the cargo, the destination, and the address and name of the consignee. The packing list is positioned as supporting material by which customs confirms whether those declared contents are correct.

For reference, the submission of the invoice was once, as a rule, required to be attached at the time of the export or import declaration, but the 2012 (Heisei 24) amendment changed this to a method of "requiring submission when customs deems it necessary," as explained in Customs' comparative table of old and new provisions in the 2012 basic notice on the Customs Act and in JETRO's commentary. The packing list is likewise submitted at customs' discretion. As for the exact effective date of the amendment, we have not fully confirmed it down to the supplementary provisions of the primary text, so we cite the sources and refrain from asserting it. What matters in practice is that the current Article 68 has the effect that "the Director-General of Customs may require submission when deemed necessary."

Situations Where a Packing List Becomes Necessary in Practice

Even though the law treats it as discretionary submission, there are many situations in practice where a packing list becomes a de facto mandatory document. Thinking "it isn't a duty, so I don't have to make one" is how you get tripped up at the sharp end of customs clearance and settlement.

Today's export and import clearance is generally carried out using NACCS, the electronic declaration system. The exporter or customs broker declares to customs based on the invoice and packing list they have prepared. In particular, with consolidated cargo (LCL), where the goods of several shippers are packed together into one container, you have to distinguish whose goods are which and how much weight and volume each occupies, so customs brokers and customs frequently request submission of the packing list.

It is also indispensable at the settlement stage. In letter-of-credit (L/C) settlement, the exporter presents the shipping documents, such as the bill of lading (B/L), the commercial invoice, the packing list, and the insurance policy, to the negotiating bank. The bank pays if the documents match the terms of the letter of credit, but if there is a discrepancy between the documents, or between the documents and the terms of the letter of credit, negotiation, that is, payment, may be refused. In other words, even a mismatch between the weight or number of packages on the packing list and what is stated on the invoice or letter of credit can stall the collection of payment.

The same holds on the importing side. It is not unusual for the customs authority of the counterpart country to require submission of a packing list. The additional fields, language, and format required differ from country to country and go beyond the scope of this article, but as an exporter it is safest to check and prepare for the counterpart country's requirements in advance.

Points to Watch and Common Mistakes

A packing list, precisely because it allows so much freedom of format, is a document where the details easily go slack. Let's head off the stumbles that tend to happen in the field.

The most common is a mismatch with the invoice. When shared fields such as description, quantity, and weight diverge between the two documents, you get caught in both customs review and bank negotiation. Keep to the order of building the packing list from the invoice, and make a habit of reconciling them after preparation.

Discrepancies in shipping marks and case numbers are also easy to overlook. If the mark or case number actually printed on the box differs from what is written in the document, you lose the correspondence between the physical goods and the paperwork.

In letter-of-credit settlement, a discrepancy can be fatal. You have to confirm that the packing list satisfies the notation and quantity conditions written in the letter of credit down to the character. "Close enough" does not pass.

And then there is the mistake of writing prices onto the packing list. Price, unit price, and trade terms are the invoice's domain; in principle they do not go on the packing list. Confusing the roles lowers the credibility of the whole document set. Assuming there is a fixed official template is dangerous too, because the fields you need change with the importing country and the terms of the letter of credit. An attitude of checking the requirements for each transaction is essential.

The Relationship to Export Control (Classification) and How TRAFEED Helps

Here let's touch on a point that export control staff in particular tend to confuse. A packing list is, above all, a document for customs clearance under the Customs Act. It is an entirely separate thing from the documents used for export control classification under the Foreign Exchange and Foreign Trade Act (FEFTA), different in both purpose and governing law. Classification calls for documents such as the classification report and the parameter sheet, and a packing list can never stand in for them. Keep it organized this way: customs documents and export control documents may both appear on the same "export" stage, but they protect different laws.

That said, in the field of export, the preparation of customs documents and the practical work of classification almost always fall on the same person. As the items you handle, the destinations, and the regulations keep changing, running classification while also keeping the documents consistent is more labor-intensive than it looks. If you want to first grasp where you stand, how well your own export control system is currently set up, try our free export compliance self-assessment. In about three minutes, you can get a read on your weak points.

If you want to lighten the burden of classification itself, there is TIMEWELL's TRAFEED (formerly ZEROCK ExCHECK). TRAFEED is an export control AI agent that conforms to the standards of Japan's Ministry of Economy, Trade and Industry, supports multiple languages, and has AI assist the processes of classification and transaction screening. The more frequently the items subject to review change over, and the more an organization deals with overseas locations, the greater the effect of systematizing the work. If you want to fit it to your own operations, you can discuss an approach tailored to your situation through a TRAFEED consultation.

Common Misconceptions

There are several misconceptions about packing lists that even practitioners stumble over. Let's clear them up first.

The understanding that "it isn't a legal duty, so I don't have to make one" is dangerous. Even though the Customs Act treats it as discretionary submission by customs, it is close to mandatory in practice for consolidated cargo, letter-of-credit settlement, and clearance on the importing country's side, and its absence leads to delayed clearance or refusal of bank negotiation.

"If I have an invoice, I don't need a packing list" is also wrong. Their roles differ. The invoice handles price and settlement; the packing list handles packing, weight, and volume, and customs, the bank, and the importer each refer to it for a different purpose.

The assumption that "a packing list is a classification document" is not correct either. This is a customs document under the Customs Act, separate from the classification report and parameter sheet under FEFTA.

"Net Weight and Gross Weight are the same" is a mistake too. They are different figures depending on whether packing materials are included. "Prices should also be written on the packing list" is wrong, since price is the invoice's domain. And there is no "fixed official template," either. The fields are trade-practice conventions, and which items are required changes with the importing country and the terms of the letter of credit.

Frequently Asked Questions

Am I always required to prepare and submit a packing list?

Under the law, it is a document that the Director-General of Customs may require you to submit when it is deemed necessary to decide whether to grant export or import permission. It is named as the packing list in Article 61 of the Order for Enforcement of the Customs Act, which implements Article 68 of the Customs Act. In other words, there is no blanket legal duty to attach one to every shipment. In practice, however, it is close to mandatory for consolidated (LCL) cargo, letter-of-credit (L/C) settlement, and clearance on the importing country's side, and its absence can delay clearance or cause a bank to refuse negotiation.

Can I combine the invoice and the packing list into a single document?

Yes, you can (an invoice cum packing list). For transactions with few line items and a limited number of packages, combining them into one document is fine. When there are many items or packages, however, customs, the bank, and the importer each refer to the documents for their own purposes, so preparing them separately is the more practical approach.

What is the difference between Net Weight and Gross Weight?

Net Weight is the weight of the goods themselves, excluding packing materials. Gross Weight is the weight including packing materials. A packing list states both. Measurement (volume, usually expressed in CBM, or cubic meters) is calculated from the external dimensions of the packed cargo.

Do I write prices on a packing list?

Normally, no. Prices, unit prices, trade terms, and payment methods are the job of the commercial invoice. A packing list shows packing, quantity, weight, and volume, so in principle it does not carry price or settlement information.

Is a packing list an export control (classification) document?

No. A packing list is a document for customs clearance (the customs declaration) under the Customs Act. Export control classification under the Foreign Exchange and Foreign Trade Act relies on different documents such as the classification report and parameter sheet. The packing list has a different purpose and a different governing law.

Summary

A packing list is a detailed statement of what is packed into which box, in what quantity, and at what weight and volume, and it is prepared by the exporter. It divides its role with the invoice, which handles price, and the practical order is to make it afterward, based on the invoice. In law, it is placed by name as the packing list in Article 61 of the Order for Enforcement of the Customs Act, which implements Article 68 of the Customs Act, and it is a document that may be required for submission when the Director-General of Customs deems it necessary. It is not a duty in every case, but it is effectively indispensable for consolidated cargo, letter-of-credit settlement, and clearance in the importing country.

As a first step, we recommend picking one recent export deal and actually reconciling the quantity, weight, and shipping marks between the invoice and the packing list. Take even a single case all the way through to consistency and you will grasp, in your bones, both how the two documents divide the work and where the seams most prone to mistakes are. Document consistency and classification are the preparation that keeps your business from stopping. Precisely because this is a field where requirements change with each transaction, do not fix your format; make a habit of checking every time.

References (Primary Sources)

• Customs Act (Act No. 61 of 1954), Articles 67 and 68 (e-Gov Law Search)
• Order for Enforcement of the Customs Act (Cabinet Order No. 150 of 1954), Articles 58 and 61 (e-Gov Law Search)
• Documents required when entrusting export clearance to a customs broker: Japan (JETRO Trade and Investment Q&A 04A-010812)
• Whether a bank may negotiate shipping documents that contain discrepancies with letter-of-credit terms: Japan (JETRO Trade and Investment Q&A 04A-010714)
• Documents required for an export declaration (Japan Customs, Customs Answer 5009)
• Overview of export clearance procedures (Japan Customs, Customs Answer 5001)
• Documents required for an import declaration (Japan Customs, Customs Answer 1107)
• 2012 Customs Act Basic Notice, comparative table of old and new provisions (amendment on submission of invoices, etc., Japan Customs)