QUICK ANSWER A shipping packing list itemizes what is physically in each package of a shipment: carton numbers, contents, quantities, net and gross weights, and dimensions, package by package. It carries no prices; value belongs to the commercial invoice. CBP exam officers, container freight stations, and receiving warehouses all work from it. That makes it the most-handled and least-respected document in the import file.
A packing list looks like the simplest document a supplier produces, and it is the one CBP physically walks the container with. When an exam is ordered, officers find carton 214 of 412 using the packing list, not the invoice. Here is what belongs on it, per package, and the mistakes that turn routine handling into slow handling.
The piece-count document of the import file
Each core import document answers one question. The commercial invoice answers "what is this worth", the bill of lading answers "who carries it and for whom", and the packing list answers "what is physically in each box". That is why it deliberately carries no prices: it travels with the cargo, gets handed to terminal staff, truckers, and warehouse crews, and none of them need to know what you paid.
Four different parties read it, each for their own reason. CBP uses it to select and locate cartons during an exam. The container freight station uses it to devan and sort LCL cargo. Your receiving warehouse checks arriving cartons against it. And when cargo arrives damaged, the insurer's surveyor reconciles what was packed against what survived.
Packing list, packing slip, or picking list
The industry uses the first two interchangeably, and any forwarder who has spent time collecting documents from suppliers will confirm no consistent difference exists: a "packing slip" in a domestic parcel is the same document a freight file calls a "packing list". The only genuinely different animal is the picking list, a warehouse-internal document telling staff which bin to pull stock from. It never leaves the building and never reaches CBP.
Three similar names, two real documents
| Term | What it is | Who sees it |
|---|---|---|
| Packing list | Package-by-package contents of a shipment | CBP, terminal, warehouse, insurer |
| Packing slip | The same document by another name, common in domestic and ecommerce use | Same audiences |
| Picking list | Internal warehouse instruction for pulling stock | Warehouse staff only |
The template, ready to copy
Copy the two blocks below into a spreadsheet and the format is done. The header identifies the shipment, the line table takes one row per carton or per run of identical cartons, and a totals row closes it.
Packing list template, header block
| Field | Your entry |
|---|---|
| Exporter / shipper | |
| Consignee | |
| Packing list number and date | |
| Commercial invoice reference | |
| PO or order reference | |
| Country of origin | |
| Container and seal number (FCL) | |
| Marks and numbers |
Packing list template, line items (example row included)
| Carton nos. | Description of goods | Units per carton | Cartons | Total units | Net wt (kg) | Gross wt (kg) | Dims (cm) | CBM |
|---|---|---|---|---|---|---|---|---|
| 1-40 | Cotton T-shirts, style 8112 | 50 | 40 | 2,000 | 8.0 | 9.5 | 60x40x40 | 3.84 |
The totals row carries total cartons, total units, total net weight, total gross weight and total CBM. On palletized cargo add a pallet column: which cartons sit on which pallet, cartons per pallet, and total pallets, because the receiving dock counts pallets first and cartons second.
What goes on a shipping packing list
Trade.gov's guidance sums up the standard: itemize the contents of each package, with weights and measurements. In practice a list that satisfies CBP, the terminal, and your warehouse carries the fields below. US customs regulation points the same direction: 19 CFR 141.86(e) requires the contents of each package to be stated, on the invoice or on an attached packing list.
Packing list fields, header and per-package
| Field | What to enter | Why it matters |
|---|---|---|
| Invoice and PO references | The commercial invoice and purchase order numbers | Ties the list to the value document |
| Shipper and consignee | Same parties as the invoice and B/L | One story across the set |
| Carton numbers | Sequential, "1 of 412" through "412 of 412" | How CBP and the warehouse find a specific box |
| Contents per carton | Item, SKU or part number, quantity | The line an exam officer verifies |
| Net and gross weight per carton | Product weight and packed weight, in kg | Reconciles against the B/L gross weight |
| Dimensions per carton | L x W x H, feeding total CBM | Rated volume for LCL, space planning |
| Marks and numbers | What is printed on the cartons | Matches the B/L marks field |
| Totals row | Cartons, gross weight, CBM for the shipment | The numbers every other document quotes |
For mixed cartons, the per-carton line has to say what is inside each one, not just shipment totals. "Carton 18: 40 units SKU A, 60 units SKU B" is the difference between an officer confirming one box and opening ten to find out.
KEY TAKEAWAY The per-carton breakdown is the whole value of the document. A packing list that only repeats shipment totals already exists; it is called the invoice, and it will not help anyone find carton 214.
Why CBP compares it line by line
When CBP orders an exam, the packing list becomes the map: officers pick carton numbers from it, pull those boxes, and verify contents against the stated lines. Three comparisons happen without anyone telling you. Quantities on the list against quantities on the invoice. Gross weight on the list against the weight declared on the bill of lading. And carton marks against the physical boxes. Clean matches shorten exams; discrepancies extend them, and every extra day at an exam site is storage and drayage money.
None of this requires the packing list to be filed with the entry. CBP's entry regulation lists it only "where appropriate" (19 CFR 142.3), so for most shipments it never gets filed, and that misleads importers into treating it casually. The document is not for the entry; it is for every hand that touches the cargo afterward.
Mistakes that slow receiving and trigger exams
Packing list errors and their cost
| Mistake | What it causes | Prevention |
|---|---|---|
| Totals disagree with the invoice | Document review, exam risk, warehouse recount | One data source for both documents |
| No per-carton detail on mixed cartons | Exams open more boxes, receiving slows | Contents stated per carton, always |
| Gross weight differs from the B/L | Carrier reweigh disputes, CBP questions | Weigh packed cartons, then book |
| Missing carton marks | Boxes cannot be matched to the list | Print and record marks before loading |
| Prices included on the list | Value visible to every handler in the chain | Keep value on the invoice only |
| No dimensions on LCL cargo | Rated volume disputes at the CFS | Measure packed cartons, record L x W x H |
The last two deserve a note. Suppliers often paste the invoice into a new header and call it a packing list, which leaks your unit costs to every terminal and trucking crew that handles the file. And on LCL, missing dimensions do not just annoy the CFS: you get billed on their measurement instead of yours, and their tape measure rarely works in your favor.
KEY TAKEAWAY A packing list is a physical-handling document. If a field does not help someone find, count, weigh, or measure a box, it does not belong; if it does, leaving it off costs someone time, and eventually you money.
How Platton uses the packing list
Packing lists run through three points of Platton's process, and all three assume the document is accurate before the container closes.
Collected and checked against the set
Our supplier document validation collects the packing list with the invoice and draft B/L, then cross-checks the three: quantities to the invoice, weight to the bill, marks to both. Suppliers correct discrepancies before sailing, while the cargo is still theirs to recount.
Receiving against the list at the warehouse
At Platton warehouses, inbound cartons are received against the packing list: counts confirmed, damage recorded per carton line, discrepancies reported the day the container devans, not when a customer orders a SKU that never arrived. The same discipline feeds Amazon FBA prep, where carton-level accuracy decides whether a shipment books into Amazon smoothly.
The document ready when CBP asks
If an exam lands, the packing list goes into the customs clearance response with the carton detail already cross-checked against the invoice and bill of lading, which keeps the exam scoped to checking boxes instead of reconstructing what should be in them.
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Common Questions About Packing Lists
What is required on a packing list for shipping?
Header references tying it to the invoice and order, then per package: carton number, contents with quantities, net and gross weight, dimensions, and the marks printed on the box, closed out by a totals row for cartons, weight, and CBM. No prices. The table above walks each field and who relies on it.
What is the difference between a packing list and a commercial invoice?
The invoice documents the transaction: buyer, seller, prices, currency, terms. The packing list documents the physical shipment: cartons, counts, weights, dimensions, and it carries no prices at all. Customs values the goods off the invoice and verifies them off the packing list, which is why every number the two documents share has to be identical.
Is a packing slip the same as a packing list?
In practice, yes. The industry uses the terms interchangeably, with "slip" more common in domestic and ecommerce shipments and "list" in international freight files. The document doing different work is the picking list, which is internal to a warehouse and never travels with the cargo.
Does a packing list show prices?
No, and it should not. The packing list travels with the cargo and passes through many hands: terminal staff, drivers, warehouse crews. Value belongs on the commercial invoice, which goes with the entry paperwork to CBP. A supplier who copies invoice lines onto the packing list is publishing your unit costs to the whole chain.
Who prepares the packing list?
The party that physically packs the goods, normally your supplier or their factory, because only they know what went into which carton. The importer's job is verification: totals against the purchase order and invoice, and per-carton detail present for anything mixed. Fixing it later means recounting boxes an ocean away.
Is a packing list required for US customs clearance?
CBP's entry regulation lists it only "where appropriate" (19 CFR 142.3), so most entries file without it. But 19 CFR 141.86(e) requires package contents to be stated somewhere, and when CBP orders an exam the packing list is the document officers work from. Treat it as required in practice, because the moment it matters, nothing substitutes for it.
What is the difference between a packing list and a bill of lading?
The bill of lading is the carrier's legal document: contract, receipt, and title, covering the shipment as a whole. The packing list is the shipper's operational document: contents per carton, no legal force. The bill's weight and marks should agree with the packing list's totals, and CBP checks that they do.
Related Documentation Guides
Bill of lading form: the transport form box by box, with a copyable template.
Commercial invoice requirements: the value document your packing list totals must match.
Bill of lading explained: the carriage document that quotes your packing list's weights and marks.
Import shipping documents: the complete list: the full US import document set.
What is CBM and how to calculate it: the volume math behind the dimensions column.
