Customs records must be kept for four years. But that is not the whole answer for an importer, and treating it as the whole answer is how businesses end up unable to answer HMRC questions they are still legally exposed to.
A single import creates records under two different regimes with two different retention periods:
| Regime | Retention period |
|---|---|
| Customs — declarations, duty, statistics | 4 years |
| VAT — including import VAT | 6 years (10 if you use or used the VAT One Stop Shop or Mini One Stop Shop) |
| Criminal investigation | Records going back 10 years may be used in evidence |
Your import declaration sits in the first row. Your import VAT — postponed VAT accounting statements, the VAT you reclaimed on that import — sits in the second.
For most importers the practical answer is six years, not four.
Why the difference matters
Say HMRC opens a check in 2026 into how you accounted for import VAT in 2021. That is five years back — outside the customs four-year window, comfortably inside the VAT six-year one.
If you destroyed the underlying import paperwork at four years because “customs records are four years”, you are now being asked about a transaction you can no longer evidence. The declaration was a customs record; the VAT you reclaimed on the back of it was not.
The two regimes look at the same shipment and ask different questions:
- Customs asks: was the commodity code, value and origin right, and did you pay the right duty?
- VAT asks: were you entitled to reclaim the import VAT you reclaimed?
You need the same documents to answer both. Only the deadlines differ.
What you actually have to keep
For every import, expect to need:
- The customs declaration and its MRN
- Commercial invoices and purchase orders
- Transport documents — bill of lading, air waybill, CMR
- Evidence supporting the customs value — freight and insurance to the border, royalties, licence fees, tooling and assists
- Proof of origin where preference was claimed — this is the one most often missing
- Licences, permits and certificates — import licences, CITES permits, health and phytosanitary certificates
- Duty and VAT accounting — deferment statements, postponed VAT accounting statements
- Records for any special procedure — customs warehousing, Inward Processing, Outward Processing, temporary admission, free zones, including Bills of Discharge
Note that the archiving period varies by procedure. Special procedures carry their own conditions and their own record requirements, and they typically run longer than the underlying import because the obligation continues while the goods remain under the procedure.
The obligation is yours, not your broker’s
Worth stating plainly, because it is the most common misunderstanding in UK customs:
Your broker’s records are not your records. The four-year customs obligation and the six-year VAT obligation sit with you as the importer, regardless of who submitted the declaration. Whether you are on direct or indirect representation changes who HMRC can pursue for the customs debt — it does not change who must hold the evidence.
Two practical consequences:
If you switch brokers, your history does not move with you. Declarations filed under your EORI remain yours, but a former agent has no obligation to maintain a retrieval service for you. Get your records out before the relationship ends, not after.
If your broker ceases trading, the obligation does not lapse. It remains yours, and HMRC’s questions will still arrive.
You can always retrieve the declaration data itself from HMRC’s Get Customs Data service, which covers four years. What HMRC cannot give you back is your invoices, transport documents, valuation evidence and origin proofs — the things that justify what was declared.
Electronic records are fine — and better
There is no requirement to keep paper. Electronic records are acceptable, and for a compliance check they are considerably better, because the test is not whether you have the documents somewhere but whether you can produce them per declaration, on request, within a deadline.
That distinction matters more than storage format. HMRC works in MRNs. If your evidence is organised by supplier, by month, or by whoever happened to handle the shipment, a compliance check turns into an archaeology project — and the clock is running while you dig.
If storage genuinely becomes a burden, HMRC’s VAT, Customs and Excise Helpline can in some circumstances agree a reduced retention period. That is a conversation to have in advance, not a justification to apply retrospectively.
Should you keep records for ten years?
In the event of a criminal investigation, traders’ records going back ten years may be used as evidence. That is not a retention requirement — nobody is obliged to keep customs records for a decade — but it is a reason some businesses choose to.
A sensible position for most importers:
- Six years minimum — it covers both the customs and VAT windows without needing to think about which is which
- Ten years if you are in a higher-risk sector, hold complex special-procedure authorisations, or have had a previous compliance issue
- Never less than four, under any circumstances
Digital storage makes the marginal cost of the extra years close to zero, which rather removes the argument for cutting it fine.
The practical test
Forget retention schedules for a moment. Ask whether you could do this today:
Pick an import from eighteen months ago. Produce the declaration, the commercial invoice, the transport document, the evidence behind the customs value, and the proof of origin if preference was claimed. All of it, for that one MRN, within an hour.
If you can, your record-keeping is in good shape whatever your retention policy says. If you cannot — and most importers cannot — then the retention period is not really your problem. Retrievability is.
That is the gap the HC Customs compliance portal is built to close. It pulls your CDS declaration data as an authorised third party, attaches your commercial documents to the right MRN, reconciles the declaration against your own purchase and goods-received records, and keeps an audit-defence pack assembled per entry across the whole retention window — so producing evidence for a compliance check is a download, not a project.
30-day free trial, no card required.
Frequently asked questions
How long do I need to keep customs records in the UK?
Four years for customs purposes. But import VAT records must be kept for six years, and a single import creates both — so six years is the practical minimum for most importers.
Is it four years or six years for imports?
Both, depending on which regime is asking. The customs declaration is a customs record (four years); the import VAT you reclaimed is a VAT record (six years). Keeping everything for six years avoids having to separate them.
Do I have to keep paper records?
No. Electronic records are acceptable. What matters is that you can produce the right documents for a specific declaration, on request, within HMRC’s deadline.
Does my customs broker keep the records for me?
Your broker keeps their own records. The legal obligation is yours as the importer, regardless of who filed the declaration, and it does not transfer under either direct or indirect representation.
What if I have already destroyed records?
You can retrieve declaration data from HMRC’s Get Customs Data service going back four years, but not your own commercial documents. If you are facing a check and cannot evidence something, say so early and take advice — presentation materially affects outcome.
How long do I need to keep records for Inward Processing?
Special procedures carry their own conditions, and the archiving period varies by procedure. The obligation generally continues while goods remain under the procedure and for the retention period after discharge, so IP and OP records typically need to be kept longer than a straightforward import. Check the terms of your specific authorisation.