Incorrect Customs Tariff Number in Germany: Legal Advice on Correction and Voluntary Disclosure

The customs tariff number — also referred to as a commodity code or HS code (Harmonized System) — is a multi-digit numerical identifier used to classify every good in international trade. In the European Union, the Combined Nomenclature (CN) serves this purpose. It is based on the international Harmonized System of the World Customs Organization (WCO) and is extended by two additional digits at EU level. The CN comprises eight digits; for statistical purposes and the import turnover tax, ten-digit TARIC codes are also used in Germany.

The customs tariff number determines several key legal and financial outcomes simultaneously:

• Duty rate: it sets the applicable rate and therefore the total amount of import duties payable.
• Trade policy measures: it governs whether EU anti-dumping duties, safeguard measures, or other trade restrictions apply.
• Authorization requirements: it establishes whether a good requires a license or falls within a sanctions regime, including dual-use controls and embargoes.
• Import turnover tax and excise duties: it forms the calculation basis for both.
• Statistical reporting: it underpins Intrastat and ATLAS declarations in foreign trade.

Important: Correct tariff classification is not a mere formality — it is a legally binding obligation of the customs declarant. The Combined Nomenclature is updated every year on January 1, which means a number that was correct in the previous year may already be outdated or invalid in the current year.

Where an incorrect customs tariff number results in an underpayment, the competent main customs office (Hauptzollamt) is both entitled and obliged to recover the shortfall. The supplementary assessment proceeds under the Union Customs Code (UCC) and must be settled together with import turnover tax and evasion interest. The limitation period is three years as a rule, extended to ten years in cases of intentional conduct.

A declarant who negligently provides an incorrect customs tariff number and thereby reduces import duties may face a fine under Section 378 AO (Abgabenordnung — German Fiscal Code) for negligent tax reduction (leichtfertige Steuerverkürzung). The fine can reach up to EUR 50,000 and in practice is often calculated by reference to the amount evaded. Negligence in this sense is established where the declarant has violated the standard of care required in trade to a particularly serious degree.

Where the declarant acts intentionally — for example by knowingly selecting a more favorable tariff number to reduce duties payable — the conduct constitutes customs evasion under Section 370(6) AO. Since customs duties are treated as taxes under the AO, the general rules of German tax criminal law apply; our German tax lawyers and tax evasion defense practice regularly handles cases at this intersection of customs and tax criminal law. A custodial sentence of up to five years or a financial penalty is the standard range; in particularly serious cases such as large-scale evasion or organized conduct, sentences of up to ten years are possible.

Customs authorizations — above all Authorized Economic Operator (AEO) status — require their holders to demonstrate consistent legal compliance. Criminal proceedings or final convictions for customs offenses can lead to the revocation of existing authorizations and cause significant disruption to a company’s foreign trade operations.

A common misconception: the freight forwarder that submits a customs declaration on behalf of a company is generally only liable for errors of their own making. Where the incorrect information was provided by the client, liability for all resulting costs and sanctions rests with the importing or exporting company. Engaging a freight forwarder does not transfer that responsibility.

Possible consequences of an incorrect customs tariff number at a glance:

Penalty-exempting voluntary disclosure (strafbefreiende Selbstanzeige) exists in German law primarily in the context of tax evasion. The mechanism is closely related to voluntary disclosure in German tax law under Section 371 AO — and since customs duties and other import or export charges are classified as taxes under the Union Customs Code and the AO, they may be evaded under Section 370 AO, with the consequence that the same route to penalty-exempting disclosure is also available. For companies that have identified an incorrect tariff classification, this is a critical option that must be exercised promptly and correctly.

The scope of the voluntary disclosure is, however, limited: it removes criminal liability for customs evasion only. Accompanying offenses — such as document offenses or violations under Section 372 AO (Bannbruch) — remain punishable. Supplementary payment obligations and potential liability claims are unaffected. The disclosure also takes effect only in favor of the person who submits it, not for co-responsible parties or third parties.

What Does an Effective Voluntary Disclosure Require?

Three conditions must be met simultaneously for the disclosure to carry penalty-exempting effect:

1. Complete correction: all incorrect, incomplete, or omitted disclosures to the customs authority must be rectified without exception. Selective or unclear corrections render the entire disclosure ineffective — even where only individual items have been omitted.
2. No statutory bar: at the time of submission, none of the bars listed in Section 371(2) AO may have arisen (see below).
3. Timely payment of all arrears: all non-time-barred duties and accrued evasion interest must be paid in full within the deadline set by the authority. This obligation applies regardless of whether the disclosure is ultimately effective.

Where all conditions are met, personal exemption from criminal liability follows. Where the disclosure fails due to a statutory bar, it may nonetheless have a mitigating effect on sentencing.

The statutory requirements were significantly tightened as of January 1, 2015. The following bars are most relevant for companies with an incorrect customs tariff number:

• Audit order already issued: once an audit order under Section 196 AO has been notified to the company or its legal representative, voluntary disclosure is barred for all materially connected offenses — even where new allegations arise only during the customs audit.
• Criminal proceedings already opened: where the customs authority has notified the commencement of criminal or administrative fine proceedings, effective voluntary disclosure is no longer available.
• Official already on-site: where a financial authority official has arrived for an audit or investigation, the window is closed for all materially connected offenses.
• Offense already discovered: where the violation had been discovered at the time of the correction and the company was aware of this or could reasonably have expected it, the bar applies. The existence of concrete indications is sufficient; a formal suspicion or identification of a perpetrator is not required.
• Evaded amount exceeding EUR 25,000 per offense: where the amount evaded in a single offense exceeds this threshold, automatic criminal exemption under Section 371 AO no longer applies. Under Section 398a AO, however, discontinuation of proceedings may still be achievable if — in addition to full payment of arrears — a further amount of 10 to 20 percent of the evaded duties is paid to the public treasury.

Companies considering a voluntary disclosure must factor in one further dimension early in the process. AEO status is conditional under Article 39(a) UCC on the absence of serious or repeated infringements of customs and tax provisions. Submitting a voluntary disclosure informs the competent main customs office of the underlying facts — regardless of whether the disclosure is ultimately effective. This may result in the rejection of pending authorization applications or revocation of existing AEO certificates.

The decision for or against a voluntary disclosure is therefore not purely a criminal law question. It simultaneously affects tax obligations, operational capacity in foreign trade, and the company’s standing with the customs administration. Each dimension requires careful legal assessment before any step is taken.

Alongside addressing past errors retrospectively, companies must ensure that future declarations are correct. Continuing to use an incorrect customs tariff number is not a permissible option: any change must be notified to the main customs office and, where necessary, accompanied by a supplementary declaration. Where the authority has issued an assessment based on the incorrect classification, it may also be possible to appeal against a customs notice to limit the financial exposure.

Lasting legal certainty is best secured through binding tariff information (Verbindliche Zolltarifauskunft, vZTA) under Article 33 UCC. On application, the competent customs authority issues a legally binding decision on the correct classification of a specific good. The vZTA is valid throughout the EU, has a three-year validity period, and is binding on both the applicant and the customs authorities — protecting against subsequent supplementary assessments provided the good has been correctly described.

A lasting correction often requires structural changes within the company: training for staff involved in foreign trade, annual review of tariff numbers at the turn of the year (when the CN update takes effect on January 1), implementation of an internal control system for customs declarations, and clear allocation of responsibility. Our compliance lawyers can support the design and implementation of these measures. When new products are introduced, tariff classification should always be carried out proactively and documented accordingly.

Schlun & Elseven Rechtsanwälte advises and represents companies across all areas of customs law and customs criminal law: from the preventive review of tariff numbers in use, through proceedings with the main customs office, to the submission of an effective voluntary disclosure. Our lawyers have extensive experience in German and European foreign trade law and are familiar with the procedural requirements a successful voluntary disclosure entails.

Clients receive advice that covers the full picture: an initial assessment of the specific error and the scope of liability, strategic guidance on whether to pursue a voluntary disclosure, and implementation of lasting compliance measures. Our goal is always to achieve the best possible legal protection for the company and its responsible individuals, while minimizing disruption to day-to-day operations.