Ruling [LUX] ¦ Company Fined €35,000 for Aggravated Tax Fraud and Related Laundering

How undeclared securities led to aggravated tax fraud and a corporate fine

On 18 December 2025 the District Court of Diekirch rendered a judgment confirming an agreement concluded on 30 October 2025 between the Public Prosecutor and a Luxembourg limited liability company (hereinafter “the company”) that admitted committing aggravated tax fraud for the tax years 2018–2022 and the related offence of laundering. The prosecution followed a denunciation by the tax administration and a criminal financial report. The facts concern the non-declaration of securities held in a custody account and their omission from the company’s financial statements, which led to a systematic understatement of the company’s taxable fortune and a corresponding tax advantage of €55,143.78 over five years. The company reimbursed the tax due and accepted responsibility; the court imposed a fine of €35,000 and ordered the payment of procedural costs of €8.

Facts and evidence supporting prosecution

According to the agreed facts, the company opened a securities account in February 2016 to deposit bearer securities issued by a Luxembourg investment vehicle valued at about €1.56 million. The deposit was made to comply with a 2014 rule on immobilisation of bearer shares, but the company did not declare those securities in its tax returns and they were not reflected in published annual accounts. The Administration des Contributions Directes (ACD) carried out in-depth checks for the years 2016–2021, then corrected tax assessments for 2017–2022. The ACD’s rectifications raised the company’s taxable fortune by more than €2 million in each year from 2018 to 2022, producing significant additional wealth to be included in the taxable base. The corrected assessments established that the annual amounts of fortune tax underdeclared were in the order of €10,200–€11,750 per year, yielding a cumulative tax shortfall of €55,143.78. That shortfall represented more than 96% of the tax that should have been due each year under the initial filings.

The court and the parties treated the facts as a collective, repeated modus operandi: deliberate non-declaration of assets and the production of financial statements that did not reflect the company’s real wealth. The criminal prosecution focused on the legal period 2018–2022 because, although the securities had been deposited earlier, the prosecutions relate to the time when the tax administration issued initial tax assessments giving the company an unjustified fiscal advantage. The company repaid the outstanding liabilities before or during the procedure and accepted the factual and legal characterization in the plea agreement.

Bastian Schwind-Wagner _Follow

"The company accepted responsibility for systematic omissions in its tax and accounting filings, repaid the outstanding tax debt and entered into a plea agreement that the court confirmed. This resolution limited criminal exposure and resulted in a corporate fine and minimal procedural costs.

The case underscores that transparent remediation and cooperation with authorities can materially mitigate sanctions, while also reminding companies that accounting omissions can trigger both tax and criminal liability."

Legal characterization: aggravated tax fraud and laundering

The company pleaded guilty to aggravated tax fraud under the Luxembourg General Tax Law (paragraphs corresponding to §§396–397 post-reform) and to laundering under the Penal Code (articles 506‑1 and 506‑4). As explained in the court’s reasoning, the modernised tax fraud offence introduced objective thresholds: an offence qualifies as aggravated where the tax evaded amounts to at least a quarter of the annual tax due and is not less than €10,000, or where the evasion exceeds certain absolute amounts. For each year 2018–2022 those thresholds were met: the tax evaded exceeded €10,000 and represented roughly 97% of the tax that should have been reported. In this context, the material element of the offence was satisfied by the systematic omission of the securities from tax returns and financial statements; the moral element was inferred from the deliberate nature of the transgression and the statutory requirement that declarations be made “to the best of one’s knowledge and belief”.

Because the company retained the tax advantage in its assets, the facts also met the elements of laundering as acquisition, possession or use of the proceeds of the primary offence while knowing their criminal origin. The court treated the tax fraud and the laundering as in ideal concurrence and applied the rules of aggregation for corporate offenders. The applicable criminal penalties for aggravated tax fraud and for laundering are significant, and for legal persons Luxembourg law multiplies statutory maxima as provided by the Penal Code; however the parties’ agreement recommended, and the court confirmed, a single corporate fine reflecting mitigating circumstances.

Sentencing, mitigating factors and practical outcome

Under the plea agreement the company was sentenced to a corporate fine of €35,000. The court explained that the company’s active repentance – chiefly the full repayment of the tax debt identified by the ACD – was a compelling mitigating factor and justified the sentence far below the maximum exposure allowed under the applicable provisions. The judgment also imposed procedural costs of €8. The decision is appealable within the statutory 40‑day period.

Key compliance and enforcement lessons

This case highlights several points relevant to in‑house counsel, compliance officers, tax advisers and financial crime practitioners:

1. Asset visibility matters. Securities held in custodial accounts must be clearly reflected in tax filings and annual accounts where the company’s accounting and tax obligations require disclosure. Failure to do so creates both tax exposure and potential criminal liability.
2. Corporate accounting is a primary source of evidence in tax crime prosecutions. The court relied on the divergence between custody records and published financial statements to establish the material basis of the offence.
3. Thresholds introduced by tax reforms can convert what might appear to be a bookkeeping or compliance lapse into aggravated tax fraud. The modern statutory approach in Luxembourg assesses significance both in absolute terms and as a proportion of the annual tax due; practitioners must evaluate both dimensions when assessing risk.
4. Restitution and cooperation reduce sentencing exposure. The company’s reimbursement of taxes and the negotiated plea agreement materially limited the fine imposed. Timely remediation and constructive engagement with authorities are effective mitigation strategies where liability is established or likely.
5. Criminal laundering exposure follows from tax fraud where the proceeds remain in corporate assets. Companies and advisers should treat potential tax recoveries as triggers for anti‑money laundering reviews and for considering self‑reporting to tax and enforcement authorities.

Broader implications for enforcement policy

Luxembourg authorities continue to pursue undeclared wealth and tax non‑compliance where discrepancies emerge from regulatory or Financial Intelligence reporting. The case underlines robust coordination between fiscal administrations, financial reporting units and prosecutors: a CRF report triggered administrative scrutiny; the ACD carried out a forensic review and referred matters to the Public Prosecutor; a coordinated criminal investigation followed. For multinational groups and intermediaries, this integrated approach increases the probability that cross‑border holdings and complex custody arrangements will be detected and prosecuted when declarations are deficient.

Practical takeaways for companies and advisers

Companies should review custody and nominee arrangements and ensure that accounting teams and external auditors capture custodial holdings in the corporate balance sheet and in tax returns. Where bearer instruments or legacy structures are involved, legal and tax teams must document the lawful basis for any non‑reporting and, when uncertain, seek rulings or voluntary disclosure options. Early remediation, including full payment of tax deficiencies and transparent cooperation with investigators, can be decisive in obtaining a materially reduced corporate sanction, as this case demonstrates.

Conclusion

The Diekirch judgment is an illustrative example of how a comparatively modest cumulative tax shortfall can nonetheless meet statutory thresholds for aggravated tax fraud when it represents a very large share of the tax actually due and when omitted assets are substantial. The outcome stresses the dual risk that accounting omissions create: direct tax exposure and parallel criminal liability for laundering the proceeds. Effective compliance, timely disclosure and remediation remain the best means to avoid the operational, reputational and criminal consequences shown by this case.

Dive deeper

• La Justice Grand Duché de Luxembourg ¦ Décisions intégrales des juridictions judiciaires ¦ Link