INTERNATIONAL TRADE LAW
Import Documentation: The Key Customs Papers
Import documentation is the paperwork that lets U.S. Customs identify your goods, assess the right duties, and decide whether to release the shipment — and getting it accurate and consistent is half of compliant importing. The central document is the commercial invoice, which drives the duty assessment; the rest support and corroborate it. This guide explains the key documents, what each one does, and the consistency that keeps your entries clean. As the importer of record, you’re responsible for the accuracy of all of it, even when a broker prepares the filing.
The Core Documents
| Document | What it is / does |
|---|---|
| Commercial invoice | The seller’s invoice; states description, value, quantity, and country of origin — the basis for duties |
| Packing list | Itemizes exactly what’s in the shipment, by package |
| Bill of lading / air waybill | The carrier’s contract and receipt for the goods in transit |
| Importer Security Filing (ISF “10+2”) | Advance data for ocean imports, filed before loading abroad |
| CBP Form 3461 | The entry — used to obtain release of the goods |
| CBP Form 7501 | The entry summary — final classification, value, and duties |
| Certificates / permits | Origin certificates (for trade-program claims) and any other-agency documents (FDA, USDA, etc.) |
The Commercial Invoice Is the Linchpin
Most customs problems trace back to the commercial invoice. CBP relies on it to determine the admissibility and dutiable value of the goods, so it must accurately and completely state the description, quantity, price actually paid or payable, currency, country of origin, and the parties. Vague descriptions (“parts,” “samples”), missing values, or assists and commissions left off the invoice are red flags that invite scrutiny. A precise, complete invoice is the single best thing you can do to keep an entry moving.
Consistency Across Documents
CBP cross-checks your documents against each other. The description, quantity, value, and origin on the commercial invoice should match the packing list, the bill of lading, and the entry. Discrepancies — a value on the invoice that doesn’t match the entry, a quantity that doesn’t match the packing list — are exactly what trigger a Request for Information (CBP Form 28) or a hold. Reconcile the documents before filing, not after CBP asks.
Recordkeeping: Keep Everything Five Years
Import records — invoices, entries, payment records, classification support, and correspondence — must generally be kept for five years from the date of entry. CBP can audit within that window, and well-organized records are both a legal requirement and your evidence of reasonable care. Build a simple system that retains every document tied to each entry.
Frequently Asked Questions
What documents are required to import into the U.S.?
Typically a commercial invoice, packing list, and bill of lading or air waybill, plus the CBP entry (Form 3461) and entry summary (Form 7501). Ocean shipments require an Importer Security Filing (ISF), and some goods need origin certificates or other-agency permits (FDA, USDA, etc.).
What is the most important import document?
The commercial invoice. CBP uses it to determine the admissibility and dutiable value of the goods, so it must accurately state the description, quantity, price paid or payable, currency, country of origin, and the parties.
Why do my import documents need to match?
Because CBP cross-checks them. Inconsistencies in value, quantity, description, or origin between the invoice, packing list, bill of lading, and entry are common triggers for a Request for Information, a hold, or further review.
How long must I keep import records?
Generally five years from the date of entry. CBP can audit entries within that period, and complete, organized records both satisfy the legal requirement and demonstrate the reasonable care expected of an importer.
Clean, consistent documentation is the difference between routine clearance and a customs hold. Reidel Law Firm helps importers set up documentation and recordkeeping that withstands CBP scrutiny, on flat-fee terms. Get an import compliance memo.
