Italy's Revenue Agency announced on 29 April 2026 that the Ministry of Economy and Finance has published the Decree of 15 April 2026, introducing further revisions to the Synthetic Indices of Fiscal Reliability (ISA) for the 2025 tax period. The updates build on earlier adjustments made in the Decree of 31 March 2026 and address economic pressures from geopolitical tensions, volatile energy prices, and regional disparities across Italian business sectors.
Italy’s Revenue Agency announced on 29 April 2026 that the Ministry of Economy and Finance had gazetted the Decree of 15 April 2026 on 27 April 2026, which updates the Decree of 31 March 2026.
The Decree of 15 April 2026 revised the Synthetic Indices of Fiscal Reliability (ISA) for the 2025 tax period, addressing the economic challenges posed by ongoing geopolitical instability and fluctuating energy costs. The decree from 15 April also introduces adjustments designed to reflect current market conditions while accounting for regional economic variations and sector-specific trends across Italy.
Adapting to economic turbulence
The ISA system helps determine which taxpayers qualify for benefits under Article 9-bis, paragraph 11 of Legislative Decree no. 50/2017. These incentives include reduced tax audits and administrative simplifications for businesses demonstrating strong fiscal reliability.
To prevent external economic shocks from unfairly penalising taxpayers, the Ministry has implemented a specialised statistical methodology detailed in Annex 4. This approach adjusts revenue, cost, and profitability indicators to minimise distortions caused by factors beyond business owners’ control, such as volatile interest rates and energy price swings.
Taxpayers retain the ability to report additional income components to boost their reliability scores under the updated framework.
Regional and sectoral considerations
The decree recognises that Italy’s diverse economic landscape requires tailored assessment criteria. Annex 1 outlines how supply and demand concentrations vary across regions, enabling fairer comparisons between businesses operating in different areas.
Meanwhile, Annex 2 updates sectoral cycle measurements that track whether specific industries are experiencing growth or contraction. These sector-specific adjustments ensure that businesses aren’t disadvantaged simply because their industry faces broader headwinds.
Special attention has been given to the retail clothing, footwear, and accessories sector (ISA FM05U), with enhanced territorial analysis for factory outlet centre locations detailed in Annex 5.
The Revenue Agency will update its calculation software to incorporate all decree modifications, ensuring accurate ISA applications when taxpayers file their returns.
Earlier, Italy’s Revenue Agency announced that the Ministry of Economy and Finance published the Decree of 31 March 2026 in the Official Gazette on 16 April 2026, approving updates to 85 synthetic tax reliability indicators (ISAs). The revised indicators will apply from the 2025 tax period and affect around 1.85 million taxpayers across multiple business sectors.
