Navigating the latest updates on Rottamazione Quinquies requires checking official timing as laws move through Parliament and become operative. Based on recent sources, here is the current landscape and what to expect. Direct answer

• As of late 2025, the definitive open window to submit adhesion requests for Rottamazione Quinquies has not been finalized in a single, universally applicable date. Updates from 2025 indicate ongoing parliamentary procedure with expectations that the measure would align with the Legge di Bilancio 2026, potentially opening in early 2026, but exact dates can shift as the text is refined. The most concrete published timelines point to a 2026 opening, with adhesion windows and deadlines to be set by subsequent legislative provisions and administrative implementing rules.

Context and key details

• Opt-in window: Preliminary reporting suggests that once the measure is officially enacted, adhesion could begin within a defined window managed by Agenzia delle Entrate-Riscossione, but the precise start date (e.g., January 2026 or a later date) and the exact deadlines for acceptance, payment schedules, and annuity terms will be established in the final text and related ministerial guidelines. Expect a multi-step process: opening of adhesion, confirmation of debt eligibility, communications of total amounts due, and the chosen payment plan.

• Payment terms: The quinquies framework is described as allowing extended payment over multiple installments (up to a lengthy horizon) with potential waivers of penalties and interest, but the specific cap on installments, late-fee treatment, and conditions (e.g., whether local taxes can be included) are subject to the final legislative text. The emphasis in sources is on broad access to settlement and flexible schedules, contingent on final approval.

• Status to watch: Given the noted possibility of aligning with the 2026 budget law, monitor parliamentary updates and official communications from the Agenzia delle Entrate-Riscossione for the definitive calendar, eligibility criteria, and submission instructions. Until the law is enacted and implementing rules issued, exact dates and procedural details remain provisional.

Practical guidance

• Stay informed: Check credible sources for the official timetable once the Legge di Bilancio 2026 is published and the implementing provisions are released. The open adhesion window, required documentation, and payment options will be defined there.

• Prepare in advance: Begin organizing debt summaries, notices, and any installments already due, so when adhesion opens, the process can proceed smoothly. Periodically verify your cassetto fiscale and any existing notices from the Agenzia delle Entrate Riscossione.

• Consider implications: If a business relies on the measure to resolve multiple outstanding balances, assess cash-flow planning around the anticipated eight- to ten-year-like payment horizon (as discussed in some analyses), while awaiting official terms.

If you’d like, I can keep monitoring reliable sources and summarize the exact opening date, required documents, and payment options as soon as the final text and official guidelines are published.