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GuidesFinanceTaxesCustoms and tax control — scope and process

Customs and tax control — scope, process and rights

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Table of contents

  • What customs and tax control is
  • Who conducts it and what it covers
  • Initiation and course
  • Scope of powers and documents
  • Control result and next steps
  • Statutory scope of customs and tax control
  • Control result — what it means
  • Customs and tax control vs tax audit — practical differences
  • How to prepare
  • Practical tips to start
  • Legal basis
  • Related topics
  • Frequently asked questions (FAQ)

Customs and tax control is a procedure carried out by the National Revenue Administration in areas within its competence. In practice it can be more complex than a tax audit because it may cover both taxes and customs matters.

What customs and tax control is

It is a control aimed at verifying correctness in areas supervised by customs‑tax authorities. The scope of each control is defined in the initiation documents and should be clear to the controlled entity.

Who conducts it and what it covers

It is conducted by customs‑tax offices. Most often it concerns tax settlements, goods turnover, import documentation or other obligations covered by regulations. What the control covers always results from the scope indicated by the authority.

Initiation and course

The initiation mode depends on the case. The authority may start with a formal indication of scope and legal basis, then performs evidentiary actions and analyses documents. As a rule, the control ends with a control result; the form of the final document follows the law and the scope of the control.

Scope of powers and documents

In practice the authority may request documents, explanations and verify the consistency of data with records. The more complex the case, the broader the documentation required. It is worth keeping registers and transaction confirmations in order.

Control result and next steps

After the control the authority presents findings. If irregularities are found, further actions may follow — depending on the nature of the case. At this stage it is crucial to calmly analyze the result and decide on further explanations.

Statutory scope of customs and tax control

The KAS Act provides a broad scope. In practice it may include, among others:

  • compliance with tax law,
  • compliance with customs law and goods turnover rules,
  • selected obligations from foreign exchange law,
  • areas related to gambling,
  • other areas within KAS competence indicated in initiation documents.

The exact scope always follows from the initiation documents, so it is worth analyzing them carefully.

Control result — what it means

Customs and tax control generally ends with delivery of a control result. The document indicates findings, possible irregularities and instructions on further options. In practice, its content determines whether the case ends with explanations or moves to further proceedings.

Customs and tax control vs tax audit — practical differences

In practice customs and tax control is more extensive and often goes beyond typical tax settlements. A tax audit is usually narrower and conducted by the tax office. For the taxpayer it is key that the procedure is separate and may involve different steps and different documentation.

In a tax audit the final document is a protocol. In customs and tax control the key document is the control result. This practical difference affects the next steps.

How to prepare

The most important is consistency of documents and quick access to data. If the control concerns sensitive areas, consider specialist support already at the preparation stage.

Practical tips to start

  • determine the scope from the initiation documents,
  • prepare the full set of documents for the indicated period,
  • appoint a person to contact the authority,
  • record which documents were submitted.

Legal basis

  • Act on the National Revenue Administration (Journal of Laws 2025 item 1131) — consolidated text
  • Tax Ordinance (Journal of Laws 2025 item 111) — consolidated text

Related topics

  • Tax audit
  • Tax inspection
  • Verification activities

Note: this text is informational and does not constitute legal or tax advice.

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Frequently asked questions (FAQ)

Czym różni się kontrola celno‑skarbowa od podatkowej?+
Kontrola celno‑skarbowa ma odrębny tryb i często szerszy zakres niż kontrola podatkowa. Obejmuje m.in. obszary objęte kompetencjami organów celno‑skarbowych.
Czy kontrola celno‑skarbowa zawsze jest zapowiadana?+
Nie zawsze. Tryb wszczęcia zależy od sprawy i podstawy prawnej.
Co kończy kontrolę celno‑skarbową?+
Co do zasady kończy się doręczeniem wyniku kontroli, który opisuje ustalenia i dalsze możliwości działania.
Jakie sprawy najczęściej obejmuje?+
Najczęściej dotyczy rozliczeń podatkowych, obrotu towarowego oraz obowiązków wynikających z przepisów celnych.
Czy mogę działać przez pełnomocnika?+
Tak. Pełnomocnik może reprezentować Cię w kontaktach z organem.
Co dzieje się po zakończeniu kontroli?+
Organ przedstawia wynik kontroli, a dalsze kroki zależą od ustaleń i charakteru sprawy.

Related guides

  • Tax audit — process, rights and duties
  • Tax inspection — process and taxpayer rights
  • Verification activities — what they are and how they proceed
  • Tax interest — rules and calculation

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  • Lump‑sum tax calculator — rates & advances

Related guides

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