Tax assessment and closely-held companies: Supreme Court Judgment no. 29900/2025

The issue of tax assessment in closely-held companies has always been fertile ground for tax litigation. In these entities, which are often family-run, the Financial Administration tends to presume that the higher income assessed against the company has been automatically distributed to the shareholders. But what happens if the shareholder and the company challenge their respective notices of assessment at different times or in different ways? The recent Judgment no. 29900 of 12/11/2025 by the Court of Cassation addressed a crucial procedural issue: whether or not it is necessary to stay the shareholder's proceedings pending the resolution of the company's proceedings.

The distinction between the company's proceedings and the shareholder's proceedings

The dispute arose from the appeal filed by the A. G. S. against M. C., following a decision by the Regional Tax Commission of Puglia. The central point concerned the prejudicial relationship between the assessment of the company's higher income and that of the shareholder. According to a thesis often supported, the shareholder's trial should be mandatorily stayed (necessary stay pursuant to art. 295 of the Italian Code of Civil Procedure) until there is a final judgment on the company. However, the Court of Cassation expressed a different orientation, aimed at balancing procedural economy with the right of defense.

Necessary or discretionary stay?

The Court clarified that there is no automatic mandatory stay requirement. This is because the shareholder and the company are distinct legal entities and the tax relationships, although linked, remain independent. Here are the key points highlighted by the judges:

• Independence of proceedings: The shareholder's appeal gives rise to a process that is autonomous from that of the company.
• Right to a fair hearing: The shareholder cannot passively suffer the effects of a judgment issued in proceedings in which they did not participate.
• Technical prejudice: A factual link exists, but this only justifies a discretionary stay (art. 337 of the Italian Code of Civil Procedure) and not a mandatory blocking of the proceedings.

The appeal, by a shareholder of a closely-held corporation, against the notice of assessment of their higher participation income gives rise to a proceeding independent of that arising from the appeal, by the company, against the notice issued against it, taking into account the subjective and objective diversity of the relative tax relationships, so that the conditions for a necessary stay pursuant to art. 295 of the Italian Code of Civil Procedure of the former until the judgment defining the latter becomes final do not exist, as the shareholder cannot suffer prejudicial effects from a judgment formed in proceedings in which they did not participate or were not given the opportunity to participate, without prejudice to the possibility, for the judge, to order a discretionary stay pursuant to art. 337, paragraph 2, of the Italian Code of Civil Procedure, of the proceedings relating to the shareholder when those relating to the company have been defined with a judgment that has not become final, due to the technical prejudice existing between the two relationships, stemming from the commonality of factual premises, which entails the extension of the reflected effects of the judgment formed in the proceedings relating to the company onto those relating to the shareholder, with the consequential resolution of any potential conflict between judgments pursuant to art. 336, paragraph 2, of the Italian Code of Civil Procedure.

Commenting on this principle, it clearly emerges how the Supreme Court wishes to prevent the shareholder from remaining "hostage" to the company's procedural timelines, unless there is a specific opportunity assessed by the judge. The discretionary stay pursuant to art. 337 of the Italian Code of Civil Procedure allows the judge of the shareholder's case to await the outcome of the judgment on the company only if deemed appropriate for the consistency of the decisions, but without the rigid automatism of art. 295 of the Italian Code of Civil Procedure.

Conclusions

Ultimately, judgment no. 29900/2025 offers greater protection to the taxpayer-shareholder, ensuring that their right of defense is not compressed by extraneous procedural dynamics. For law firms and professionals in the sector, this ruling represents an important reference for strategically managing tax appeals related to closely-held companies, allowing for a more precise assessment of when to request or oppose motions for a stay of proceedings.