Portugal: Judicial uniformity and equality for companies and individuals suffers a relevant blow

International Tax Review is part of Legal Benchmarking Limited, 1-2 Paris Garden, London, SE1 8ND

Copyright © Legal Benchmarking Limited and its affiliated companies 2026

Accessibility | Terms of Use | Privacy Policy | Modern Slavery Statement


Portugal: Judicial uniformity and equality for companies and individuals suffers a relevant blow

Sponsored by

21GarriguesBrazil.jpg

To be able to have two factually identical situations which raise the same quaestio juris receiving the same treatment by all courts is fundamental to legal security and fairness. The appeal for uniformity of opposing judicial decisions is, therefore, an essential mechanism to implement the principles of equality and legal certainty, in particular in the field of law where its importance is even more notorious, given the complexity and volatility of tax legislation, which often generates divergent interpretations that result in opposite treatment for taxpayers in analogous situations.

To be able to have two factually identical situations which raise the same quaestio juris receiving the same treatment by all courts is fundamental to legal security and fairness. The appeal for uniformity of opposing judicial decisions is, therefore, an essential mechanism to implement the principles of equality and legal certainty, in particular in the field of law where its importance is even more notorious, given the complexity and volatility of tax legislation, which often generates divergent interpretations that result in opposite treatment for taxpayers in analogous situations.

However, in Portugal we are witnessing a worrying paradox: the progressive tightening of the conditions for the admissibility of this type of appeal, which undermines the aspiration for an increasingly homogeneous jurisprudence. This time, the relevant law should not take the blame, as it lays down clear requirements for the appeal, namely (i) a contradiction on the same fundamental question of law between judgments of higher courts, (ii) that are not appealable, and (iii) when there is no consolidated jurisprudence on the subject. In a way that we believe is assumed, it is the Supreme Administrative Court (STA) that has been interpretating these requirements in an increasingly restrictive way.

The recent STA Ruling in Case No. 88/24.9BALSB illustrates this trend very well. The court refused to hear an appeal for standardization regarding two cases with different decisions on whether venture capital companies (SCR) should be considered "financial companies" for the purposes of Stamp Duty (IS), when what was at stake were management fees charged by the same SCR to VC Funds, on which IS was assessed at a rate of 4%, based on the same wording of the legal rule of incidence. The only difference was in the tax periods and the tax amounts, which were irrelevant to the legal issue.

The court understood that there was no real opposition between the decisions. While tacitly acknowledging that the same legal issue was at stake, it created, however, two new obstacles: a "different approach" and a "totally different position of principle" in the judgments, which is to say that two courts that reach opposite conclusions on the same issue may not be deciding on the same quaestio decidendi, only because they employ different reasoning. The unsuccessful declarations of vote of three dissenting judges, in which they simply reiterate that "the same question of law was at stake", confirm this restrictive drift.

This approach represents a missed opportunity for improving the tax system. For taxpayers, it translates into legal uncertainty and increased costs. For the Tax Authority, it promotes unnecessary litigation. For investors it adds another layer of uncertainty to a system that is already seen as very slow, bureaucratic and costly. The impact is particularly serious in tax arbitration, since the only way to reach the STA is when there is divergence between decisions. This is, to a certain extent, a reversal of the promise of speed, efficiency and justice that the introduction of the appeal for uniformity opposing judicial decisions has represented for arbitral justice.

Co-authored by:

more across site & shared bottom lb ros

More from across our site

The arrival of Alex Anderson swiftly follows that of funds tax specialist Stuart Alter and suggests the Tier 3-ranked firm has higher ambitions
One of the two appointments is EY’s Gordon McIntosh, who becomes the big four firm’s second senior tax departure in September
Balson's move from a Tier 1 practice to a Tier 3 competitor looks counterintuitive. The market data suggests it is anything but
Awards
It was another banner year for Deloitte, which picked up more awards than any other firm at a gala ceremony held at The Londoner in Leicester Square
The big four firm has been embroiled in a scandal over partners’ misuse of confidential board papers to pitch for and win corporate audits for Westpac and Dexus
Drawing on lessons from the PepsiCo case, tax lawyer Paul McNab explains why the ATO's latest royalty guidance should concern multinationals well beyond the technology sector
As pillar two exposes the limits of fragmented tax processes, organisations are rethinking their operating models to create the trusted data foundations that AI demands
World Tax data shows Matt Donnelly is moving from a Tier 3 transactional tax practice to a Tier 1 market leader, underlining Kirkland & Ellis’s pull at the top end of the market
Nexdigm's Maulik Doshi and infer360 co-founder Sunil Agarwal dig deeper into their partnership and discuss why the tax technology industry is consolidating
Advisers won’t be short of work in a world of increased valuation disputes, documentation requirements and behavioural responses from clients seeking to protect their wealth
Gift this article