“Omnibus” Corrective Decree 2026, overview of the new measures and their effective dates  – TAX INSIGHTS SEPTEMBER 2026

Further to Tax Newsletter no. 5 – August 2026, which set out the measures of greatest operational significance introduced by Legislative Decree no. 148 of 7.8.2026 (published in the Official Gazette of 11.8.2026 no. 185, Ordinary Supplement no. 30, in force since 12.8.2026), the fourth corrective decree implementing the tax reform, we enclose a summary table of the measures discussed therein, together with their respective effective dates. 

 

Measure 

Effective date 

Business income 

Fringe benefit on company cars for mixed use and optional equipment 

From 2026, with the transitional regime under Art. 1(48-bis) of Law 207/2024 also rewritten and conduct adopted up to 31.12.2025 preserved. 

Gains on the assignment or offsetting of tax credits 

Credits purchased from 12.8.2026, with the option of early application from the tax period in progress at 31.12.2024 (amended return, no refund). 

Deductibility of stock option plan costs 

Transactions resolved upon from the tax period following the one in progress at 31.12.2025. 

Amortisation of trademarks, goodwill and indefinite-life intangibles – IAS/IFRS adopters 

Assets recognised, or higher values acknowledged, from 2026. 

Grants against research and study costs 

Grants obtained from 2026. 

Entities treated as industrial holding companies 

From the tax period following the one in progress at 31.12.2025. 

Carry-forward of business losses 

Provision of authentic interpretation: it is also relevant for the past, broadening the scope of Art. 84(3) of the ITC. 

“Pre-merger” tax period and carried-forward surpluses 

From 12.8.2026, the date on which Legislative Decree 148/2026 entered into force. 

Contributions in kind of shareholdings at a loss 

Contributions made from 2026, with effects also on prior periods from 31.12.2024 where the returns filed are consistent. 

Certified date for the permanent establishment’s financial report 

From the tax period in progress at 31.12.2026. 

Carry-forward of final foreign losses 

From 12.8.2026, the date on which Legislative Decree 148/2026 entered into force. 

VAT 

VAT deduction and recording of invoices 

Mirroring amendments to Arts. 56 and 88 of the new VAT Consolidated Act, applicable from 1.1.2027. 

Tax assessment, penalties and collection 

Presumed distribution of off-book profits 

No express transitional rule is provided: an aspect to be monitored in respect of pending proceedings. 

Assessment of multi-year deductible items 

Goods and services purchased from the tax period in progress at 31.12.2027; no effect on pending proceedings. 

Mismatches between POS data and electronically transmitted considerations 

The ground for non-punishability should apply retroactively pursuant to Art. 3(2) of Legislative Decree 472/97. 

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