What is CPC (Customs Procedure Code)? [2026]

TL;DR

Quick definition

CPC tells customs which procedure applies to the goods, for example standard import, export or a relief procedure. Using the wrong code can trigger declaration rejection, incorrect duty treatment or loss of a customs simplification. In practice, the code must match both the commercial intention of the shipment and the customs route actually being used.

CPC (Customs Procedure Code) is a code specifying what you intend to do with the goods. In Poland and the EU it is a 4-digit code (e.g. 4000), in the UK (CHIEF/CDS system) it is a 7-digit code.

Key codes (EU/PL):

10 00: Final export.
40 00: Release for free circulation (Import with duty/VAT payment).
42 00: Import with VAT exemption (for intra-community supply).

UK codes (CDS):

In the new CDS system, procedure codes look different, for example. 40 00 000. Incorrect CPC code is the most common reason for rejection of the declaration. If you enter "40 00" (standard import) but want to use the relief for returned goods, you will unnecessarily pay customs duty.

What the current official guidance means in practice

For operational work, the current procedural rules, declaration fields and relief conditions should be checked directly against the official guidance. For this topic, the core reference points are European Commission, GOV.UK / HMRC.

Operational watch-outs

Most delays come from inconsistent data between the commercial invoice, packing list, tariff classification, reference numbers and transport assumptions. Before shipment release, confirm who is responsible for clearance, whether the data set is complete and when the declaration must be filed.

Documents and data to prepare

The minimum working pack worth preparing before speaking to customs support or filing a declaration includes:

commercial invoice with a complete goods description
packing list with quantities, weight and package count
HS/CN code and origin information
EORI number and the party responsible for the declaration

Practical notes for UK-PL operators

For regular flows, keep a stable data template: goods description, HS code, origin, Incoterms, carrier details and source documents. This shortens response time and reduces border corrections.

Official sources

EU Commission (Customs procedures) — European Commission, 2026-03-04
UK GOV (Importing into the UK) — GOV.UK / HMRC, 2026-03-04
GOV.UK: Customs Declaration Service — GOV.UK / HMRC, 2026-03-04

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