# Italian tax litigation and assessment regulations > Live situation record from CLSTR: https://clstr.news/situations/italian-tax-litigation-and-assessment-regulations > Updated: 2026-08-29T04:58:58.000Z. Sources: 3. Developments: 2. Legal and regulatory developments in Italy have addressed various aspects of tax assessment and litigation procedures. Initial judicial clarifications from the Court of Cassation established that while judges have the authority to evaluate evidence through prudent assessment, the burden of proof remains with tax authorities to demonstrate violations. This period also saw focus on the ‘redditometro’, a tool used by the Agenzia delle Entrate to estimate income based on spending and lifestyle. While the number of controls using this method has increased slightly, revenue collected through this channel has declined. Current regulations allow taxpayers a preventive contradictory process to provide counter-evidence. Subsequent rulings by the Court of Cassation have further refined litigation procedures, specifically regarding the representation of the Agenzia delle Entrate-Riscossione. The court ruled that tax appeals using private lawyers are inadmissible unless the agency provides specific justifications, such as a conflict of interest or a declaration of unavailability from the Avvocatura dello Stato. Failure to provide such documentation results in an incurable formal defect. ## Timeline ### 2026-08-29: Italian Court rules tax appeals using private lawyers inadmissible without justification The Italian Court of Cassation ruled that tax collection appeals using private lawyers without formal justification are inadmissible, requiring the use of the State Attorney's Office instead. 3 sources. https://clstr.news/cluster/italian-court-rules-tax-appeals-using-private-lawyers-inadmissible-without-justification ### 2026-08-19: Italy tax assessment: judicial rulings and redditometro updates Italian tax authorities face evolving standards in evidence evaluation and synthetic income assessments via the 'redditometro', with recent rulings emphasizing the state's burden of proof. 4 sources. https://clstr.news/cluster/italy-tax-assessment-judicial-rulings-and-redditometro-updates --- Cite as: Italian tax litigation and assessment regulations. CLSTR, https://clstr.news/situations/italian-tax-litigation-and-assessment-regulations