Executive Summary: Key Legal and Evidentiary Issues

• Scope of tax participation liability under section 68.0.1 LAF for a tax lawyer who structured a cross-border business sale involving a Panamanian company and a Luxembourg account
• Distinction between the clients’ clear tax evasion (unreported appropriations from Little River) and the advisor’s alleged intentional assistance in their provincial tax offences
• Weight to be given to the lawyer’s opinion letter (P-6.1) and whether allegedly false statements in that letter can ground an inference of mens rea or only raise doubts about his knowledge and intent
• Proper use of circumstantial evidence and the limits of inferring wilful blindness versus speculation when the lawyer’s role ended years before the clients failed to report income
• Significance of other professionals’ involvement and the legitimacy, in principle, of offshore structures in assessing whether the only reasonable inference is participation in a “stratagème” to elude Quebec tax
• Appellate review constraints on overturning an acquittal, including the strict standard for finding a verdict “déraisonnable” and the need to show an error of law that would have changed the outcome

Factual background and transaction structure

Daniel Courteau is a Quebec tax lawyer who, in 2007, acted for Claude and Stéphane Viau and their family in relation to the sale of the goodwill (achalandage) of two Canadian inventory-taking businesses operated in substance by Claude Viau but legally owned by his sons Luc and Stéphane. The corporations were 2747014 Canada Inc. (Les Inventaires Internationals G.V.B. inc.) and 2910527 Canada Inc. (Inventaires Viau). Claude Viau had arranged a sale of the business to his long-term business associate, Gaston Laparé. The price negotiated was $2.5 million, “net” to Viau, payable over five years and intended to be free from tax withholdings in the ordinary commercial sense; the purchasing entities would eventually be two Quebec corporations owned by Laparé’s daughters, 9181-7536 Québec inc. and 9181-7619 Québec inc.
Each family retained professionals. The Viau family mandated Courteau and another lawyer from his firm, while the Laparé family retained a chartered professional accountant, Marguerite MacKenzie, and lawyer Me Daniel Bérard. A Pricewaterhouse (PwC) tax practitioner, Frédéric Bouchard, also advised on the structure. After exchanges among these advisors over possible ways to structure the transaction, a closing meeting was held at Courteau’s office in September 2007.
The final structure involved interposing a Panamanian corporation, Little River Commercial Inc. (Little River), which had been incorporated a few months earlier, on 26 April 2007. Although Little River was formally held and administered through nominees in Panama, the evidence showed that it was effectively controlled by Claude and Stéphane Viau and Claude’s wife, Murielle Lachapelle, by way of a prête-nom arrangement. As between the Canadian companies and Little River, two Asset Purchase Agreements transferred the Canadian corporations’ goodwill, retroactive to 1 July 2007, for a stated price of $45,000. In parallel, Little River granted to the Quebec purchasing corporations a right to use the goodwill and an option to purchase it after five years, in return for “royalties” totalling $3.3 million over the same period. The royalties were contractually to be paid subject to applicable withholding tax obligations on Little River’s income, which the Laparé entities were to remit directly to the tax authorities.
From September 2007 on, royalties were paid directly into a Little River bank account opened at Bank Hapoalim in Luxembourg on 7 June 2007. Courteau did not participate in opening this account or in transmitting payment instructions; those tasks were handled by the Viau family’s financial advisor, Serge Lamarche. Over time, the Quebec corporations paid a total of $2,475,000 into the Little River account and remitted an additional $825,000 in federal source deductions on behalf of Little River, for a total transactional value of $3.3 million. Provincial withholding tax was not applied, following advice obtained by the parties’ accountants. Little River was dissolved on 30 March 2012, at the end of the five-year period.

Use of Little River and the offshore account

As beneficial owners and controllers of Little River, the Viau family ultimately appropriated the funds flowing into Little River’s Luxembourg account. The evidence established annual withdrawals to the benefit of the Viau family between 2007 and 2012, culminating in a very large withdrawal in 2012 after Little River’s dissolution. None of these amounts were reported as income in Quebec by the individuals involved.
The trial judge at first instance found beyond a reasonable doubt that the Viau family had used the Panamanian shell corporation and the Luxembourg account as an artifice or “faux-fuyant” to hide business proceeds from the Quebec tax authorities. The only rational conclusion was that they had “éludé l’observation d’une loi fiscale” under section 62(1)(d) of the Loi sur l’administration fiscale (LAF), by diverting and failing to declare the amounts they took out of Little River. Claude and Stéphane Viau later pleaded guilty, in separate proceedings, to tax offences arising from this conduct, confirming the finding that the structure was in fact misused for tax evasion.

The lawyer’s opinion letter and professional role

Courteau’s role was largely confined to designing and documenting the contractual structure of the 2007 sale and licensing arrangement, and to limited follow-up on withholding tax questions in early 2008. As part of the 2007 closing, he drafted and signed an English-language opinion letter (marked P-6.1) on De Grandpré Chait letterhead addressed to Little River’s board. In that letter, he described his firm as Canadian legal counsel to Little River, summarised the transaction as the purchase of intangible property from “unrelated third parties” in Canada for the purpose of licensing it to other unrelated third parties, and confirmed, “based on the information and affidavit received,” that the transaction was legitimate and did not involve money laundering, tax evasion or criminal activity. He also stated that the agreements he had reviewed complied with applicable rules and did not violate Quebec law.
A second letter (P-6.1.1), prepared by Courteau but signed by Claude Viau as shareholder of Little River, authorised the Panamanian nominee director to sign the six agreements on behalf of Little River and explicitly acknowledged the nominee arrangement. These two letters were transmitted together to the Little River board. The trial judge considered that, taken at face value, the wording “based on the information and affidavit received” suggested that Courteau had made at least some inquiry of the Viau family regarding the purpose and legality of the transaction, and had obtained assurances of legitimacy. There was no evidence that any of the other professionals (for the Laparé side or PwC) objected to the use of Little River or considered it inherently illegitimate at the time.
From a factual perspective, there was no proof that Courteau participated in opening the Luxembourg account, instructing Laparé on where to send the funds, managing the account, orchestrating the withdrawals, or preparing the Viau family’s personal tax returns. His active file involvement ended once the sale and licensing contracts were executed in September 2007, aside from his initiative in early 2008 to verify federal and provincial withholding tax obligations with the accountants involved.

Penal proceedings and the first instance acquittal

In February 2021, the Quebec revenue authority (Agence du revenu du Québec, ARQ) served offence notices on Claude and Stéphane Viau alleging breaches of the LAF. On 23 February 2021, ARQ also served Courteau with two counts framed under section 68.0.1 LAF (participation in another’s tax offence). He was not charged as a principal offender, but as someone who had “prescrit, acquiescé ou participé” in the Viau offences.
Count 1 alleged that Courteau had prescribed, acquiesced in, or participated in Claude and Stéphane Viau’s voluntary use, between 24 February 2013 and 5 April 2013, of a Panamanian company and a Luxembourg bank account (or other means) to elude or attempt to elude compliance with a fiscal statute or the payment/remittance of tax, contrary to section 62(1)(d) LAF. Count 2 alleged that he had similarly participated, in the same 2013 period, in the Viau brothers’ making of false or misleading statements in their 2012 personal income tax returns, contrary to section 62(1)(a) LAF, by omitting to declare the sums appropriated from Little River.
Because of prescription, a Court of Québec judge (Côté J.) had already restricted the period covered by Count 1 to the eight years preceding service of the offence notices, so that the focus for Courteau’s potential liability was the 2012 tax year and the 2013 filing and assessment period, not the original 2007 structuring. Separate trials were ordered: one for Courteau, one for the Viau family, with the Courteau trial proceeding first.
At trial in 2023, the Court of Québec judge accepted that the Viau family had used Little River and the Luxembourg account as a scheme to hide taxable income and had effectively committed the alleged LAF offences. However, the central question became whether the prosecution had proved, beyond a reasonable doubt, that Courteau had: (1) done or omitted something “in view of” helping the Viau family to commit those specific infractions, and (2) knew that they intended to commit them, or was wilfully blind to that intention.
On the evidence, the trial judge found a reasonable doubt on both the intention and knowledge elements for Courteau. The judge emphasised that: his role was limited to the 2007 contractual structuring; the use of an offshore company is not in itself unlawful or presumed to be evasive; multiple other professionals were involved in and acquiesced in the structure; there was no evidence that any advisor raised tax-evasion concerns at the time; there was no proof of a personal motive on Courteau’s part; and importantly, his 2008 correspondence showed him proactively checking what source deductions were legally required. The judge considered the prosecution’s theory of “aveuglement volontaire” (wilful blindness) unproven on the totality of the circumstantial evidence and entered acquittals on both counts against Courteau in January 2024.

Appeal by the revenue authority and applicable legal standards

The ARQ appealed the acquittal to the Quebec Superior Court under section 268 of the Code of Penal Procedure, invoking section 286 C.p.p. It argued two principal errors. First, ARQ claimed that the trial judge had committed an error of law by relying on speculative “conjectures” about Courteau’s state of mind, particularly by treating his opinion letter P-6.1 as evidence that he had sought to verify the legitimacy of the transactions, even though the letter allegedly contained false or misleading statements about the parties being unrelated and the absence of tax-evasion purpose. ARQ framed the letter as part of the very fraud it was pursuing, not as evidence favouring the defence. Second, ARQ contended that the acquittal was “déraisonnable” (unreasonable) in light of the circumstantial evidence, which, in its view, pointed overwhelmingly to Courteau’s participation in a tax-evasion stratagem.
On appeal, the Superior Court judge (Chatelain J.C.S.) began by restating the well-settled limits on appellate intervention in acquittal cases. An appellate court may only interfere where the judgment is unreasonable given the evidence, a reviewable error of law has been committed, or justice has not been done. For questions of law, correctness is the standard, but findings of fact and inferences are reviewable only for “erreur manifeste et dominante” (palpable and overriding error). In circumstantial evidence cases, a conviction is permissible only if guilt is the sole reasonable inference; if an inference consistent with innocence is also reasonable, an acquittal must stand. The existence of a reasonable doubt is intimately bound up with the trial judge’s assessment of the sufficiency and weight of the evidence and receives deference.

Assessment of the opinion letter and alleged errors

A major plank of ARQ’s appeal was that the trial judge had turned the opinion letter P-6.1 into a source of reasonable doubt based on assumptions the prosecution said were factually and legally untenable. ARQ argued that the reference to “unrelated third parties” was plainly false, because Little River and the Canadian vendor corporations were effectively controlled by the same individuals, and that the sweeping assurance about the transaction not involving tax evasion was contradicted by the actual dollar amounts and the concealed control structure. From ARQ’s perspective, the only reasonable inference was that P-6.1 was drafted deliberately to lend a veneer of legality to an artifice designed to elude Quebec tax by routing sale proceeds offshore.
The Superior Court rejected this framing. It noted that P-6.1 enumerated all six contracts involved, including the agreements in which Little River licensed the goodwill to the Quebec corporations owned by the Laparé daughters with an option to purchase for $3.3 million. The total economic consideration was thus not hidden in the documentation; the $45,000 price between the Canadian companies and Little River formed only part of a broader arrangement that was plainly visible in the contract set. The court further pointed out that, at least as regards the agreements between Little River and the Laparé-owned corporations, the description of dealings with “unrelated” parties was accurate. Even if the description of Little River and the Canadian corporations as unrelated was technically incorrect, that did not compel the unique inference that P-6.1 had been crafted to assist in tax evasion or prove that Courteau knew of a specific plan to withhold income from Quebec tax returns years later.
The appellate court endorsed the trial judge’s reading of the phrase “based on the information and affidavit received” as indicating that Courteau had sought and obtained information and sworn assurances from the Viau family or their representatives about the purpose and legality of the transaction. In that light, the letter could reasonably be seen as evidence that Courteau did not deliberately avoid learning of an unlawful purpose but instead took steps that, on their face, were consistent with due diligence. That interpretation provided a non-speculative basis for a reasonable doubt about wilful blindness or intentional assistance in the specific tax offences charged.

Other evidentiary considerations and the limits of participation liability

Beyond the letter, the Superior Court emphasised that the trial judge’s conclusion did not rest on a single piece of evidence. The judge had also relied on the open, multi-professional nature of the structuring (with the offshore company known and unchallenged from the outset), the lack of any evidence that Courteau had other dealings with the Viau family outside this mandate, the absence of personal financial motive, and the fact that all decisions concerning the Luxembourg account and the appropriation of funds were carried out by the Viau family and their financial advisor after Courteau’s participation had ended. The essence of the wrongdoing lay in the later non-declaration of income by the Viau family, not in the bare existence of the offshore structure itself.
On the law, the court affirmed that section 68.0.1 LAF, like section 21 of the Criminal Code, requires proof that the alleged participant intentionally assisted another person to commit a specific offence and knew that person intended to commit it. Wilful blindness, as a substitute for knowledge, demands proof that the accused “preferred to shut his eyes” in the face of clear reasons to inquire; mere recklessness or carelessness is insufficient. In this case, the prosecution relied almost entirely on circumstantial inferences from the structure and the documents. The appellate judge held that the trial judge had applied the correct legal standards and was entitled to find, on the totality of that evidence, that guilt was not the only reasonable inference and that a reasonable doubt existed about Courteau’s knowledge and intent.

New evidence on appeal and final outcome

During the appeal, the ARQ obtained leave to introduce new evidence: the guilty pleas of Claude and Stéphane Viau in 2024, their joint statements of facts, and transcripts of their out-of-court examinations. In those examinations, the Viau family attempted to shift blame to Courteau as architect of the structure while also claiming they had always understood that taxes would be properly paid, and that their aim had been to shield funds from Claude’s son’s creditors rather than evade tax. The Superior Court approached this new evidence with caution, noting it arose from guilty-plea negotiations and self-serving attempts to minimise personal responsibility. It ultimately concluded that even if the new material were fully credited, it would not reasonably have changed the trial judge’s verdict because it did not undermine the key findings about Courteau’s limited role and lack of involvement in the later non-declaration of income.
In the result, the Superior Court found no error of law, no palpable and overriding factual error, and no basis for characterising the acquittal as unreasonable. The ARQ’s appeal was dismissed, and the acquittal of Daniel Courteau was confirmed. The court ordered that the appeal be rejected “avec frais de justice” (with costs), meaning that Courteau is the successful party on appeal. However, the judgment does not state any specific monetary amount for those costs, and no quantified award of damages, penalties, or other sums in his favour can be determined from the decision itself.