A scheduled customs audit by the Principal Customs Office (Hauptzollamt) is no routine appointment for a business. Behind what appears to be a straightforward administrative notice lie significant financial and criminal risks: back-payments running into five or six figures, substantial fines, and — in the worst case — criminal proceedings against company management. Businesses that wait until after the audit has concluded before seeking legal advice have already missed a critical opportunity to shape the outcome.
Schlun & Elseven Rechtsanwälte specializes in customs law and white-collar criminal defense and supports companies from the moment an audit is announced — strategically, communicatively, and with the aim of preventing or limiting harm. Our German customs lawyers have many years of experience dealing with customs authorities and advise companies throughout Germany on all aspects of audits conducted by the Principal Customs Office.
What Do German Customs Auditors Examine?
A customs audit by the Principal Customs Office covers significantly more than the verification of customs duties. Auditors systematically examine a range of areas:
Customs and Tax Law
- Correct calculation of customs duties and import VAT,
- Tariff classification of goods and rules of origin,
- Compliance with preferential arrangements and customs valuation requirements,
- Use of authorizations and customs procedures.
Employment Law and Social Security
- Compliance with minimum wage requirements for the company’s own employees,
- Review of contracts for work and subcontractors,
- Bogus self-employment and illegal temporary agency work,
- Correct payment of social security contributions.
Further Compliance Areas
- Record-keeping obligations and documentation,
- Sanctions lists and embargo regulations,
- Industry-specific regulations (e.g., hospitality, construction).
How a German Customs Audit Proceeds
A customs audit by the Principal Customs Office typically follows this process:
- Notice: The Principal Customs Office announces the audit in writing, usually with a notice period of a few weeks. In urgent cases or where serious violations are suspected, the audit may also take place without prior notice.
- Document request: Before or at the start of the audit, extensive documentation is requested: customs declarations, invoices, contracts, payroll records, working-time records, and correspondence with business partners.
- On-site audit: The auditors arrive at the company’s premises, review documents, conduct interviews with employees and management, and examine systems and processes. The audit may last several days or weeks.
- Audit report: Upon completion of the audit, the Principal Customs Office prepares a report containing findings, calculations, and legal assessments. This typically results in notices requiring additional payments.
- Possible consequences: Depending on the outcome, potential consequences include assessment notices for additional duties, the initiation of fine proceedings, a criminal referral to the public prosecutor’s office, or search warrants.
Rights and Obligations During a Customs Audit in Germany
The applicable legal framework depends on the type of audit. Customs audits are governed by Articles 48, 15, and 51 of the Union Customs Code, together with Section 200 of the Fiscal Code (AO) to the extent it is not superseded by the Union Customs Code. External tax audits are subject to Sections 200 and 147 AO.
Companies are required to cooperate. In practice, this means providing the requested documents, answering questions, granting auditors access to business premises, and permitting inspection of books, records, and electronic systems.
However, these obligations are not unlimited. Companies are only required to provide documents that are relevant to the audit and proportionate to its scope. Where requests appear to exceed the scope of the audit or seem disproportionate, legal advice should be sought before any documents are handed over.
Managing directors and other responsible persons have the right not to incriminate themselves. Once suspicion of a criminal offense arises — for example, customs duty evasion or the withholding of social security contributions — the obligation to make statements no longer applies. Throughout the audit, all parties have the right to legal representation. Having an attorney present during meetings and interviews is frequently the decisive factor in avoiding misunderstandings or inadvertent self-incrimination.
Companies also have the right to inspect the case file and are entitled to adequate preparation time. For announced audits, there should be sufficient time to organize documents and prepare properly. If auditors arrive unannounced or with an unreasonably short notice period, it may be possible to request a postponement.
Risks and Consequences of a Customs Audit in Germany
The consequences of a customs audit can be existentially threatening. Customs duties and import VAT that were not paid or were underpaid will be back-charged, plus interest. Where systematic errors are identified, significant sums can accumulate quickly.
Violations of customs regulations can be punished with substantial fines. Companies are also liable for violations committed by their employees. Where there is suspicion of intentional evasion of customs duties or taxes, the Principal Customs Office will initiate criminal proceedings. These proceedings are directed against the individuals responsible within management and may result in fines or custodial sentences.
Companies that delay or fail to meet their cooperation obligations face further sanctions. Where an audit is obstructed, the Principal Customs Office may impose a delay penalty under Section 200a(2) AO. Where a taxpayer fails to meet their cooperation obligations, compliance can be enforced through coercive measures under Sections 328 et seq. AO — for example, through coercive fines. Where an imposed coercive fine cannot be collected, substitute coercive detention under Section 334 AO — an extreme and rarely applied measure — may in exceptional cases be ordered. A right to refuse to cooperate exists only in the circumstances set out in Sections 101–103 AO — for example, where close family members are involved or where there is a risk of criminal or regulatory prosecution.
Depending on the individual case, the public prosecutor’s office may order searches of business premises and private residences, with all the operational and personal disruption that entails. Where criminal investigations become public, the reputational damage can be severe and long-lasting — business partners grow cautious and banks scrutinize credit lines more closely.
Why Early Legal Advice Is Critical in German Customs Audits
Many companies underestimate the importance of professional support during a customs audit. Yet it is precisely the phase before and during the audit that determines the eventual outcome. Every statement made to the auditors can later be used against the company. An attorney ensures that all communication is precise, factual, and legally sound.
Disorganized document production, a failure to draw clear distinctions, or premature concessions can all make the situation worse. We prepare documentation in a targeted manner and attend all meetings with the auditors. Not every finding by the Principal Customs Office is legally sustainable. We examine the allegations, identify grounds for challenge, and develop a defense strategy — proactively, not retrospectively.
Through well-crafted written submissions and negotiations with the Principal Customs Office, it is often possible to avoid criminal proceedings entirely or to reduce fines. Those who wait too long will often have already forfeited this opportunity. Where the Principal Customs Office issues a notice, an objection can be filed against that notice.
Which Businesses Are Affected by Customs Audits in Germany?
Customs audits by the Principal Customs Office are by no means limited to traditional import and export businesses. The following sectors and types of business should be particularly alert:
- Import and export companies: Cross-border trade in goods, preferential trade agreements, certificates of origin
- Trading companies: Import VAT, customs valuation, product classification
- Logistics service providers: Customs procedures, release for free circulation, authorizations
- Construction companies: Minimum wage, subcontractors, contracts for work, bogus self-employment
- Hospitality and hotel industry: Undeclared work, bogus self-employment, minimum wage
- Industrial companies: Sanctions lists, dual-use goods, export controls
- Companies using subcontractors or contracts for work: Temporary agency work, social security obligations
Frequently Asked Questions relating to Customs Audits in Germany
The duration varies considerably depending on the size of the company, the complexity of its operations, and the number of areas under examination. Smaller audits may last only a few days, while comprehensive audits at larger companies can extend over several weeks or even months. Even after the on-site phase has ended, the Principal Customs Office may require further weeks to evaluate the documentation.
The consequences depend on the nature and severity of the violations. Negligent violations may result in additional payment demands and fines. Where intent is suspected, the Principal Customs Office will initiate criminal proceedings. An experienced attorney will review the allegations, prepare written submissions, and negotiate the next steps — in many cases, it is possible to avoid proceedings entirely or to significantly reduce the consequences.
Yes. Auditors may interview employees about their duties and responsibilities. Statements made by employees can subsequently be used against the company — particularly where they are careless or could be misunderstood. It can be worthwhile to brief employees in advance. Companies should also ensure that interviews take place in the presence of an attorney.
Ideally, as soon as the audit notice is received. The earlier we are brought in, the better positioned we are to prepare for the audit, minimize risks, and act strategically. At the very latest, legal advice is indispensable at the first indication that fines or criminal proceedings may be involved. Those who consult a lawyer only after the audit has concluded have already missed key opportunities.
The most common mistakes include:
- Disorganized or incomplete document production
- Making premature concessions or statements without prior legal review
- Inadequate documentation of processes and decisions
- Communicating with the auditors without legal support
- Missing deadlines for written submissions or objections
- Underestimating the consequences of apparently minor discrepancies
Yes. Where serious violations are suspected, where there is urgency, or where prior notice would jeopardize the purpose of the audit, the Principal Customs Office may arrive without advance notice. In such cases, it is especially important to remain calm, avoid making any spontaneous statements, and seek legal advice immediately.

Practice Group: German Customs Lawyers
Practice Group:
German Customs Lawyers
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