What is IRES (Italy)?
IRES (Imposta sul Reddito delle Società) is the national corporate income tax paid by Italian companies. The rate is 24% of taxable profit. Companies also pay IRAP, a separate regional tax, so the total burden is higher than 24%.
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Current Rate (Calendar year for most companies. The return is due by the last day of the 10th month after year-end, which is 31 October for calendar years.)
24% of taxable profit. IRAP is charged on top (3.90% ordinary rate, varies by region).
Example
A company with €100,000 of taxable profit owes €24,000 of IRES. IRAP is calculated separately on net production value, so the total tax is higher.
How IRES (Italy) works in Italy
IRES is administered by the Agenzia delle Entrate. The return is the modello Redditi SC, which covers IRES and IRAP and is filed electronically by 31 October for a calendar-year company. Payment goes through the modello F24. The saldo for the year just ended and the first acconto for the next year are due by 30 June, and the second acconto by 30 November.
A conditional 20% rate, the IRES premiale, existed for the 2025 tax period only. Finn never applies it silently. It asks you or your commercialista to confirm that every condition is met.
AccountsOS estimates IRES at 24% from your books and tracks the dates. Finn prepares the figures. You or your commercialista files the return and pays the F24. AccountsOS does not submit to the Agenzia delle Entrate.
Related terms
IRAP (Imposta Regionale sulle Attività Produttive) is a regional tax on net production value (valore della produzione netta). The ordinary rate is 3.90%, and each region may vary it by up to 0.92 percentage points.
The modello F24 is the payment form Italian taxpayers use to pay IRES, IRAP, IVA, withholding tax and INPS contributions to the Agenzia delle Entrate and INPS.
The regime forfetario is a flat-rate regime for Italian sole traders and professionals. It taxes a fixed share of revenue at a 15% substitute tax, or 5% for the first five years of a new activity, with no IVA charged and no IRAP.
The bilancio d'esercizio is the annual accounts of an Italian company. The shareholders approve it within 120 days of year-end, or within 180 days where the bylaws give a reason, and it is deposited at the Registro Imprese within 30 days of approval.
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