November 2, 2026 is a date to mark on the calendar for VAT numbers that intend to adhere to the biennial composition with creditors. Within this deadline, in fact, interested taxpayers can accept the Revenue Agency’s proposal to define the tax income for the years 2026 and 2027 in advance. This is an agreement that can offer greater predictability in tax planning, but which requires a careful evaluation of one’s economic situation.
With circular no. 8/E of 6 October 2026, the Revenue Agency had the opportunity to collect and update the information on the institute, clarifying the access rules, the membership methods, the reasons for exclusion and the benefits recognized to taxpayers. Here’s how the two-year composition with creditors works, who can use it and what aspects to consider before accepting the tax authorities’ proposal.
What is the biennial preventive agreement and how it works
The two-year composition with creditors, also known by the acronym CPB, was introduced by the legislative decree of 12 February 2024, n. 13. Its objective is to encourage the spontaneous fulfillment of tax obligations, allowing certain categories of taxpayers to agree in advance with the Revenue Agency the income to be declared for income tax purposes for two years.
In practice, the Financial Administration prepares a proposal based on the information available, including data from tax returns, the Synthetic Fiscal Reliability Indices (ISA) and the elements present in its databases. The taxpayer can examine the proposed amounts and decide whether to accept them.
For the two-year period 2026-2027, the agreement concerns the income deriving from business or self-employment activities and the value of net production relevant for IRAP purposes, in cases where the tax is due. The central element is that the taxes involved are calculated on the agreed basis, rather than on the income actually produced during the two-year period, according to the rules established by the legislation. If the activity generates earnings higher than expected, the higher ordinary income does not automatically lead to an increase in the agreed tax base. If, however, the actual income is lower, the taxpayer may still have to pay taxes on the basis established in the agreement, except in the specific cases provided for by law.
The agreement does not, however, eliminate all tax obligations: the declaration and accounting obligations required for one’s business remain and VAT continues to be determined according to ordinary rules.
Who can join the biennial preventive agreement
The 2026-2027 CPB is mainly intended for taxpayers who carry out business, arts or professions and apply ISAs, the synthetic indices of fiscal reliability. These are the indicators used by the Tax Office to evaluate the degree of fiscal reliability of economic activities.
It is therefore not sufficient to have an open VAT number: it is necessary to verify that your business is among those affected by the ISA and that all the conditions established by the regulations are respected.
Generally speaking, they cannot join:
- taxpayers in the flat rate regime;
- the subjects for whom the ISA applicable to the composition is not foreseen;
- taxpayers who already have an ongoing agreement for the two-year period 2025-2026 and cannot therefore join a new overlapping two-year period at the same time;
- subjects with revenues or compensation exceeding 5,164,569 euros, according to the limits established by the regulations.
There are also specific conditions relating to the taxpayer’s tax position. For this reason, before accepting the proposal it is advisable to check not only the income indicated by the Agency, but also the actual existence of the access requirements.
Tax debts, declarations and other causes of exclusion
The aspects to be checked include tax and social security debts. For the two-year period 2026-2027, the regulations provide for a threshold of 5,000 euros for final debts relating to taxes administered by the Revenue Agency and for social security contributions, to be assessed overall according to the rules in force. The verification concerns the situation as of 31 December 2025. Debts that are suspended or regularly paid in installments are excluded from the calculation, under the conditions established by law. If the residual amount exceeds the threshold, the taxpayer can remove the impeding cause by paying the excess part before accepting the proposal.
The legislation also contemplates further impediments, including certain declaration omissions in previous tax periods and specific convictions for tax or economic crimes. For 2026-2027, the presence, in 2025, of exempt or non-taxable income exceeding 40% of the income deriving from business or professional activity is also relevant.
Deadline 2 November 2026: how to accept the proposal
For the two-year period 2026-2027, the ordinary deadline has been postponed to 31 October 2026. Since the date falls on a Saturday, the effective deadline for taxpayers with a tax period coinciding with the calendar year is Monday 2 November 2026. The same deadline concerns both those who join for the first time and those who renew the agreement already applied in the two-year period 2024-2025. For taxpayers with a tax period that does not coincide with the calendar year, the specific deadline established in relation to the closure of the financial year applies.
To evaluate the proposal, the taxpayer must use the software “Your ISA 2026 CPB“, available on the Revenue Agency website. The procedure allows you to enter the necessary information, process the proposal and view the amounts relating to the two-year period.
Acceptance can be communicated in two ways:
- together with the tax return: the communication is transmitted with the ISA form linked to the 2026 Income form;
- with independent sending: the CPB form is sent electronically together with only the 2026 Income cover page, by completing the appropriate section relating to the communication.
