On 1 July 2025, the Ministry of Economy and Finance (MEF) issued guidance that explains, in practical terms, how to distinguish “non-entitled” from “non-existing” tax credits and how tax authorities should recover them. The guidance builds on the reform that defined both categories (Legislative Decree, Leg. Decree No. 87/2024, within Legislative Decree, Leg. Decree No. 74/2000) and highlights the role of certification for R&D, innovation and design expenses