Research reviewed on 12 November 2026 against the linked official guidance. Illustrations are hypothetical, not client outcomes or professional advice.
Request the right HMRC reports
The Customs Declaration Service reporting tool provides up to 31 consecutive days of data per request from within the previous four years. It normally excludes the latest two days, and HMRC says preparation can take up to 72 hours. An importer generally needs CDS subscription, EORI and linked Government Gateway access; outside reviewers need the importer's permission.
| HMRC report | Useful fields | Control to perform |
|---|---|---|
| Import item report | Commodity code, customs value, duty amount | Group comparable items; check for inconsistent treatment |
| Import tax lines report | Customs duty, VAT and other amounts | Separate duty from tax that follows a different recovery route |
| Import header report | Declaration-level invoice, value and transport information | Reconcile against invoices and original entry totals |
| Export item report | Export records | Use only if a separate export-history question requires it |
The reporting window is not the claim window: HMRC's normal overpaid import duty limit is three years, subject to exceptions. Track each MRN and entry date separately. See the claim route guide before considering CDS, C285 or a VAT-return adjustment.
Use the downloadable register at item level
The CSV workbook gives columns for MRN, item number, EORI, import date, description, original code and origin, customs value, duty paid, proposed treatment, source evidence, reviewer and status. It includes one visibly fictional example row. Replace the example with authorised internal records; do not paste sensitive declarations into a public form.
Worked example: when a spreadsheet says £1,000
Hypothetical entry — not a real claim
One imported line has a customs value of £50,000 and 5% duty of £2,500. Someone suggests the correct rate may have been 3%, or £1,500. The £1,000 difference is a hypothesis until dated specifications, code, origin, measures, legal grounds, deadline and original duty actually paid have been verified. It may turn out there is no overpayment.
Three controls a serious review needs
- Keep the original entry intact. Proposed values belong in new columns, never overwritten historic fields.
- Test a negative example. Find a comparable entry you expect is correct and explain why. This can expose broad spreadsheet errors.
- Document the sign-off. Every actionable hypothesis needs an assigned qualified reviewer and a source-supported legal explanation.
Move carefully from data to action
Investigate apparent coding anomalies with our commodity-code guide, origin differences with the trade preference guide, and data access with the CDS reports walkthrough. An importer should authorise any third-party access and establish secure document handling before sharing records.
Official references
A specific, documented issue?
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