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The Revenue Commissioners v Quinn (Approved)

High Court of Ireland
Sep 11, 2026
Smart Summary (Beta)

Factual and Procedural Background

This was an appeal by the Revenue Commissioners (“Revenue”) from a determination of the Tax Appeals Commission (“TAC”) under section 949AP of the Taxes Consolidation Act 1997. The determination concerned amended income-tax assessments against the Respondent for 2011 and 2012, totalling €301,718, in respect of income received from three companies registered in Country A. [1][2]

The Respondent initially declared the income and claimed foreign-tax relief, but later filed amended returns removing it. Revenue subsequently issued amended assessments. The Respondent appealed to TAC, contending principally that she had been ordered by courts in Country A to repay the money and therefore had received no taxable profit. [3][4][5]

The Respondent also argued that the income came from an unlawful source or activity under section 58 of the Taxes Consolidation Act 1997, requiring assessment as “miscellaneous income” under Case IV rather than as foreign income under Case III. TAC allowed the appeal concerning Company A, but the Respondent did not appeal the adverse findings concerning Companies B and C. [6][7][8][9]

The appeal before the High Court was limited to Revenue’s challenge concerning Company A. [9]

Legal Issues Presented

  1. Whether TAC erred in law by deciding that the Company A income could only be assessed under section 58 and Case IV, rather than under Case III as income from a foreign possession. [10]
  2. Whether TAC erred in finding that Revenue knew, by the date of the assessments, that the Company A income derived from an unlawful source or activity. [11]
  3. Whether TAC or the High Court had power to amend the assessments to use the terminology required by section 58. [12][13]

Arguments of the Parties

Revenue’s Arguments

  • Revenue argued that it had not known, when the assessments were issued, the basis on which the Country A judgments required repayment. No judgment or translation had been supplied, and Revenue therefore did not know that the income came from an unlawful source or activity. [14][15]
  • Revenue argued that “unlawful” in section 58 meant contrary to criminal law, and sought permission to argue that the relevant law was the law of this State. [16][17]
  • Revenue submitted that the assessments could be amended to use the wording required by section 58 and invited the Court to exercise a corresponding power. [13]

Respondent’s Arguments

  • The Respondent argued that the income was from an unlawful source or activity because the courts in Country A had invalidated the purported employment contract and ordered repayment of the money. [5][6]
  • She contended that the assessments were invalid because they described the income as “Russian Income-Self” rather than “miscellaneous income” as required by section 58. [18]
  • She argued that Revenue had assessed the income under the wrong Case of Schedule D and that the statutory time limits for correcting or reissuing the assessments had expired. [19][20]
  • She accepted that unlawful income was taxable in principle and that the tax amounts were correct, but maintained that technical defects invalidated the assessments. [20][21]

Table of Precedents Cited

Precedent Rule or Principle Cited For Application by the Court
Lough Swilly Shellfish Growers Co-Operative Society Ltd. v. Bradley [2013] IESC 16, [2013] 1 I.R. 227 Principles governing an application to raise a new point on appeal. The Court noted the authority in connection with Revenue’s application to argue a point not raised before TAC, but found it unnecessary to determine that issue. [17][22]
Mara v. Hummingbird Ltd. [1982] I.L.R.M. 421 The court may interpret undisputed documentary material for itself. The Court independently interpreted the correspondence between the Respondent and Revenue. [23][24]
Hayes v. Duggan [1929] I.R. 406 Earlier authority concerning whether tax legislation applied to profits from a wholly unlawful business or transaction. The case formed part of the legislative background to section 58, which was enacted to reverse the effect of earlier caselaw. [25][26]
Collins v. Mulvey [1956] I.R. 233 Income from an unlawful activity may remain taxable where Revenue had actual knowledge of the activity’s criminal character. The Court treated the decision as illustrating that actual knowledge, rather than constructive knowledge, is required for section 58(1)(c). [27][28]
Company D v. members of the relevant family, [2012] IEHC 379 Findings concerning an alleged scheme to place assets beyond a creditor’s reach. The Court held that the judgment did not establish Revenue’s actual knowledge of the specific Company A employment contract before the assessments. [29][30][31]
Company D v. members of the relevant family, [2012] IEHC 510, [2012] 4 I.R. 381 Findings concerning alleged dishonesty and asset-protection arrangements. The judgment might raise concerns or suspicion, but did not amount to actual knowledge that the specific contract was unlawful. [32][30][33]
Company D v. members of the relevant family, [2013] IEHC 388 Observations concerning unusual salary-payment arrangements. The Court held that the judgment was not shown to have been brought to Revenue’s attention and could not establish actual knowledge. [34][35][33]

Court's Reasoning and Analysis

The Court considered it unnecessary to decide the correct meaning of “unlawful” or whether the assessments could be amended, because the appeal could be resolved by determining whether the unlawfulness had been “known to the inspector” when the assessments were made. [22]

The correspondence showed that Revenue had been told only that judgments in Country A required repayment of the money. Revenue had not received copies, translations, dates, record numbers, or the reasoning underlying those judgments. [36][37]

The Respondent’s communications focused on the contention that repayment meant the money was not taxable income. They did not explain that the purported employment contract was allegedly bogus, that the payments were intended to prejudice creditors, or that the Country A courts had relied on the Respondent’s lack of a work permit and qualifications. [24][38]

The fact that Revenue knew that judgments existed did not establish knowledge of their legal basis. Without the judgments or information about their reasoning, Revenue could not be taken to know that the income came from an unlawful source. [39][40][41]

The domestic judgments relied upon by TAC concerned broader family litigation and did not specifically address the Company A contract. At most, they could have created suspicion or prompted inquiry; they did not establish actual knowledge. [34][30][33]

The wording of section 58(1)(c)—“known to the inspector”—indicated actual knowledge, rather than constructive knowledge expressed by the phrase “ought to have known.” The legislative history also supported that interpretation. Revenue therefore had no duty to conduct an investigation into the legality of the income source. [42][43][26][28]

The Court concluded that TAC had drawn an inference which no reasonable decision-maker could have drawn from the evidence. Section 58 was therefore not engaged. [44][45][46]

Holding and Implications

Revenue’s appeal was allowed on the issue of actual knowledge. The High Court answered the second question in the Case Stated affirmatively, holding that TAC erred in finding that Revenue knew, when the assessments were issued, that the Company A income derived from an unlawful source or activity. Section 58 consequently did not apply, and the assessments were valid. [22][46]

The Court reserved consideration of the precise orders and whether to answer the first question, observing that it appeared to follow from section 58 being inapplicable that Revenue was entitled to assess the income under Case III as income from a foreign possession. [47]

The direct effect was to reverse TAC’s decision concerning the Company A income. No broader implication or new precedent was identified in the opinion.