Customs does not audit your intentions. It audits your file. An importer of record has to keep the records behind every entry, invoices, packing lists, origin documents, entry summaries, and produce them when asked, for five years from entry. Most importers technically have those documents. They are spread across a broker portal, an email inbox, and a supplier drive, and nobody can assemble one entry's full story in an afternoon.
What the recordkeeping rule actually covers
The requirement comes from the recordkeeping provisions tied to 19 USC 1508 and the (a)(1)(A) list in 19 CFR Part 163. That list names the documents customs expects: entry summaries, commercial invoices, bills of lading, certificates of origin, valuation documents, and correspondence that affects classification or value. If a document helped decide how the goods were entered, it belongs in the file.
The five year clock runs from the date of entry for most records, and from liquidation for some. Deleting supplier emails at year three because a mailbox policy says so is a quiet way to break a federal record rule. Archive rules inside a company have to bend around the customs clock, not the other way round.
One entry, one folder, no scavenger hunt
The working fix is boring. Every entry number gets one folder, named with that entry number, and everything for that entry lands in it within days of clearance: the 7501 summary, the invoice as sent, the packing list, the transport document, payment proof, and any ruling or broker advice relied on. Folder per entry sounds like filing clerk work because it is.
The test is retrieval speed. Pick a random entry from two years ago and time how long a complete file takes to assemble. If the answer involves asking the broker to resend things, the system is the broker, and that relationship may not last five years. Brokers change. The importer's duty does not.
The documents people forget
Payment records get forgotten most often. Customs can ask how much was actually paid, including assists, royalties, and later price adjustments, and a bank transfer that does not match the invoice value needs an explanation in the file, not a memory. Tooling and mould charges paid separately are the classic trap: they can be dutiable assists, and the file should show how they were treated.
Origin evidence runs second. A certificate signed by a supplier is a start, but production records, bills of material, and origin declarations that support a preference claim are what survive a verification visit. If the claim could not be rebuilt from the folder alone, the folder is thin where it matters most.
When the demand letter arrives
A customs request for records, often on a CF 28 request for information or in a focused assessment, comes with a deadline measured in weeks. Importers with per entry folders answer with documents. Importers without them answer with apologies and reconstruction, and reconstructed files invite the next question: what else was rebuilt after the fact?
Confirm the current retention and production rules with a licensed customs broker before setting policy, because product specific records, drawback files, and FTZ records carry their own clocks. The five year entry file is the floor of the system, not the whole of it.
Keep reading
Related guides on this site: Customs Bond Amounts: How the Minimum and the Stacking Rules Work Post Summary Corrections: Fixing an Entry After the Summary Is Filed Answers for teams shipping Shopify orders across borders.
Frequently asked questions
How long must import records be kept?
Generally five years from the date of entry, and for some records five years from liquidation, under 19 CFR Part 163. Drawback, FTZ, and some agency regulated goods carry their own retention rules, so check the specific programme before destroying anything.
What happens if an importer cannot produce records?
Customs can draw adverse inferences, deny preference or drawback claims that depend on the missing documents, and in serious cases pursue penalties for recordkeeping failures themselves. The bigger cost is usually credibility: one missing file turns a routine inquiry into a wider review.
Does the broker's copy count as the importer's file?
Relying on it is risky. The legal duty sits with the importer of record, brokers change systems and clients, and portal access can end. Keep an importer controlled copy per entry, even if the broker also retains one.
Which records are forgotten most often?
Payment proof and origin support. Transfers that differ from invoice values, separately paid tooling that may be a dutiable assist, and the production records behind a preference claim are the items auditors ask for and folders most often lack.