The recent Order No. 22616 of August 9, 2024, issued by the Court of Cassation, offers significant insights into the functioning of the principle of non-contestation within the context of tax proceedings. This principle, enshrined in Article 115 of the Code of Civil Procedure, is of fundamental importance in ensuring the certainty and stability of proceedings, but it presents certain limitations that warrant analysis.
The principle of non-contestation, as clarified by the Order under review, essentially operates at the evidentiary level. This means that if a party does not contest a fact, that fact is considered proven. However, the Court has emphasized that this principle cannot limit the *thema decidendum*, i.e., the scope of what must be decided by the judge, to only contested grounds. In other words, even if a party does not contest certain aspects of the claim, the judge is obliged to consider the entirety of the matter if a ruling on the entire claim has been requested.
Principle of non-contestation - Scope of operation in tax proceedings - Limits - Factual circumstances. In tax proceedings, the principle of non-contestation under art. 115 c.p.c. operates at the evidentiary level and does not conflict with, nor override, the distinct principle that a failure to take a position on the issue raised by the taxpayer cannot restrict the *thema decidendum* to only contested grounds if rejection of the entire claim has been sought, nor can it circumvent the principle of limited reviewability of underlying acts adopted by the tax administration, which are independently and mandatorily challengeable before the tax judge within the 60-day period pursuant to articles 19 and 21 of Legislative Decree No. 546 of 1992. (In this case, the S.C. upheld the appealed decision, which had deemed the principle of non-contestation inapplicable to the non-familial nature of tax debts underlying a mortgage registration, as the finality of the underlying tax notices no longer allowed for questioning the existence and amount of the tax credit).
The order under comment highlights that the finality of tax notices plays a crucial role. Indeed, if a tax notice becomes final, it implies that the taxpayer can no longer contest the existence and amount of the tax debt. This aspect is fundamental, as it underscores the importance of timely appeals against tax notices, which must be filed within 60 days as provided by Articles 19 and 21 of Legislative Decree No. 546 of 1992.
In conclusion, Order No. 22616 of 2024 by the Court of Cassation represents an important confirmation of the principles already established regarding non-contestation in tax proceedings. It emphasizes the importance of careful and timely management of tax disputes, both by taxpayers and the tax administration. Understanding the limitations and possibilities offered by this principle is fundamental for the proper defense of taxpayers' rights within the complex Italian tax landscape.