Ruling [LUX] ¦ Luxembourg Court Draws a Line Between Attempted Tax Fraud and Money Laundering

Attempted aggravated tax fraud did not support a money laundering conviction

The Luxembourg District Court, sitting in correctional matters, convicted a dentist of attempted aggravated tax fraud for income tax years 2017 and 2018, while acquitting her of both completed tax fraud and money laundering by possession.

The judgment is significant for financial crime practitioners because it distinguishes between a final tax reassessment and the criminal completion of tax fraud. Although the tax authority established substantial undeclared income and issued corrected assessments, the court found that the underlying fraud had not progressed beyond an attempt. That conclusion prevented the alleged tax advantage from qualifying as criminal proceeds for the charged money laundering offence.

Undeclared professional income identified through tax audit

The case arose from a review conducted by the Luxembourg Direct Tax Administration, or “Administration des Contributions Directes (ACD)”. The taxpayer, a self-employed dentist, was suspected of declaring income linked only to services recorded and reimbursed by the National Health Fund, or “Caisse nationale de santé (CNS)”, while failing to report further professional receipts.

The audit compared data from billing software with bank statements and declared taxable income. It identified undeclared taxable income of €26,018.72 for 2017 and €101,884.71 for 2018, a combined amount of €127,903.43.

The related tax shortfall was assessed at €10,336 for 2017 and €42,264 for 2018, totalling €52,600. Corrected tax assessments were issued on 23 February 2022. The taxpayer did not challenge them within the statutory time limit, meaning that the tax assessments became final.

The defendant argued that she had relied on her accountant, that she reported the income appearing in annual CNS statements, and that unpaid patient invoices explained the discrepancies. The court rejected these explanations as insufficient to displace her personal responsibility for the accuracy and completeness of her tax returns.

Bastian Schwind-Wagner _Follow

"The Luxembourg court’s ruling confirms that a tax offence must be completed before an alleged tax benefit can serve as proceeds of crime for a money laundering charge. Where inaccurate tax declarations have not resulted in an unjustified tax assessment or other actual fiscal advantage, the conduct may remain an attempted offence.

The case also underlines that final tax reassessments and criminal proceeds are legally separate questions. While the taxpayer was fined €25,000 for attempted aggravated tax fraud, the absence of a completed predicate offence led to acquittal on the laundering-by-possession allegation."

The importance of when tax fraud is completed

Under Luxembourg’s General Tax Law, aggravated tax fraud may arise where the tax evaded exceeds one quarter of the tax actually due and is at least €10,000, among other statutory thresholds. The amounts at issue met the relevant quantitative test.

However, the court made a decisive distinction between submitting an inaccurate tax return and obtaining an unlawful tax advantage. In its view, intentional false or incomplete declarations amount to attempted tax fraud. The offence becomes completed only when the tax administration grants an unjustified fiscal advantage or fixes the taxpayer’s liability at a lower amount than it would have imposed had it known the true facts.

There was no evidence that initial tax assessments had been issued on the basis of the false declarations and subsequently corrected after discovery of the omissions. The court therefore held that no improper tax benefit had actually been granted before the reassessment process. The conduct was punishable as an attempt, rather than as completed aggravated tax fraud.

The court also found that there had been no voluntary withdrawal from the attempted offence. The absence of an initial assessment was not caused by a spontaneous decision by the taxpayer to correct or abandon the false declarations.

Why the laundering charge failed

The prosecution alleged money laundering by possession of €52,600, described as the financial benefit derived from aggravated tax fraud. Luxembourg law makes laundering punishable in connection with aggravated tax fraud committed from 1 January 2017 onwards.

Yet the laundering allegation depended on the existence of proceeds from a completed predicate offence. Since the court characterised the tax conduct as attempted aggravated tax fraud, it held that the alleged tax advantage had not been obtained. There were therefore no proceeds of completed aggravated tax fraud capable of being possessed and laundered under the charge brought.

The defendant was consequently acquitted of money laundering by possession.

This outcome shows that a final administrative tax adjustment does not automatically establish criminal proceeds for anti-money laundering purposes. Prosecutors must establish not only the underlying tax misconduct and the taxpayer’s intent, but also that the predicate offence was completed and generated a legally identifiable patrimonial benefit.

Reliance on an accountant did not remove personal responsibility

The court took a firm position on the taxpayer’s reliance on professional advisers. A taxpayer may use an accountant to prepare returns, but remains responsible for the completeness and truthfulness of the information submitted to the tax administration.

This is particularly relevant in professional practices with several sources of income, including reimbursements, direct patient payments, card payments, bank transfers, outstanding invoices and cash receipts. Internal accounting records, billing software and bank activity must be capable of reconciliation with the income reported in tax filings.

The ruling also confirms the evidential importance of digital billing data and bank records. Such evidence can establish an undeclared income pattern even where underlying paper accounting records are no longer available.

A €25,000 fine for the attempted offence

For attempted aggravated tax fraud, the court imposed a criminal fine of €25,000, plus procedural costs of €76.72. It took account of the seriousness of the undeclared amounts, while also considering the absence of prior convictions and the defendant’s personal circumstances.

No custodial sentence was imposed. The court applied the relevant provision of the Criminal Code allowing it to impose a fine alone. It also noted that coercive detention for non-payment could not be ordered against a person aged over 70.

Practical consequences for tax-crime and AML cases

The judgment highlights a potentially consequential issue in Luxembourg tax crime enforcement: the timing and mechanism through which a tax advantage is obtained may determine whether the fraud is completed or remains an attempt.

For money laundering allegations based on tax offences, this distinction is central. A substantial tax reassessment, undisputed by the taxpayer, may strongly support the factual case for intentional non-disclosure. It does not necessarily prove that a completed predicate offence produced launderable proceeds, particularly where the tax authority did not first issue an assessment reflecting the inaccurate declaration.

The judgment remains subject to appeal.

Dive deeper

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