Difference between compliance and tax assessment is one of the first things to understand if you receive a communication from the Italian Revenue Agency (Agenzia delle Entrate). We explain in simple terms what it is, what changes between the two tools (“compliance” and “accertamento”), and above all what to do within the right deadlines to avoid penalties or problems.
This article explores what emerges from the Italian Revenue Agency’s 2025–2027 plan, which provides for sending 7.5 million compliance letters, and clarifies the meaning of the difference between compliance and tax assessment. You will also find practical advice, a calendar with deadlines to respect, and how a professional firm like ours can assist you.
Table of Contents
1. What is compliance and what is tax assessment?
Compliance is a preventive, formal but non-binding invitation that serves to report anomalies in tax returns. It is not a tax assessment act, but a suggestion to remedy the situation voluntarily.
Tax assessment (accertamento fiscale), on the other hand, is an official and binding act: it is a rectification or confirmation of the tax due, with penalties and interest, which can only be challenged through specific legal actions. Understanding the difference between compliance and tax assessment helps you behave correctly at the right moment.
2. The Agency’s plan: what to expect until 2027
The Italian Revenue Agency will send up to 7.5 million compliance letters by 2027:
- 2.7 million in 2025
- 2.4 million in 2026
- 2.4 million in 2027
Already in 2023, thanks to this tool, the State recovered €4.2 billion, about 13.4% of the amounts from tax evasion.
3. Compliance vs tax assessment: why the difference is important
| Characteristic | Compliance (Friendly Letter) | Tax Assessment |
|---|---|---|
| Nature | Friendly invitation, non-binding | Formal and imposing act |
| Taxpayer’s obligation | Optional, but recommended | Binding: requires payment or appeal |
| Possibility of challenge | Not immediately appealable | Appealable through appeal or adhesion |
| Purpose | Spontaneous correction and avoidance of penalties | Forced recovery of tax and penalties |
This table clearly highlights the difference between compliance and tax assessment: the first is a preventive molecule, the second is an official reaction.
4. What to do if you receive a compliance letter
If you receive one of these letters (via PEC, post, or your Tax Drawer), here are the recommended steps:
- Read it carefully and identify any anomalies.
- You are in the compliance phase, not yet in the assessment phase.
- You have room for intervention: you can use ravvedimento operoso (voluntary correction) or file an amended return.
- The practice is to close the process without additional penalties — precisely thanks to the difference between compliance and tax assessment.
- Act quickly: do not wait for it to become a binding act.
5. The essential calendar: what to do and when
| Period | Recommended Action |
|---|---|
| Immediately after receiving the letter | Read calmly and assess the anomalies |
| Within 60 days | File an amended return or use ravvedimento operoso |
| If you need clarification | Use the call center, CIVIS, or contact a professional firm |
| In case of adhesion to an assessment | File adhesion or appeal within the prescribed deadlines |
| After regularization | Keep receipts and communications as proof of correct management |
6. Difference between compliance and tax assessment: The regulatory and operational context
The plan is part of the tax compliance strategy: promoting spontaneous fulfillment by using tax data and IT cross-checks — electronic invoices, receipts, VAT settlements — and data analysis tools. The aim is to avoid false positives and improve the effectiveness of alerts.
7. Difference between compliance and tax assessment: Why turn to a professional firm

The difference between compliance and tax assessment may seem subtle, but in reality it is crucial: knowing when you are still in the preventive phase can save you time, penalties, and stress.
Italian tax law is much broader and more complicated than in other countries and changes frequently. Professional experience is needed to:
- Correctly interpret the communication received
- Calculate and apply voluntary corrections or amendments
- Interact correctly with the Italian Revenue Agency
As Studio Lombardo Larosi, we stand by your side to interpret the current law and help you comply, protecting you from any tax dispute.
8. Most common tax errors: why the letters arrive
Many taxpayers receive communications not because they intentionally evaded taxes, but due to simple errors, omissions, or inconsistent data. For example, common causes include inconsistencies between electronic invoices and VAT settlements, or failure to report income in the 730 or Redditi form. In these cases, knowing the difference between compliance and tax assessment allows you to react effectively: you can spontaneously correct your position, avoiding the start of the assessment procedure and the related penalties.
9. Letters for Superbonus and building bonuses: what to do
Another area where the Italian Revenue Agency is intensifying controls concerns building incentives, such as the Superbonus. Many citizens have used the incentives without completing all cadastral formalities or without complying with the regulations. In these cases too, a compliance letter is often received before any possible assessment. Once again, understanding the difference between compliance and tax assessment allows you to address the problem before it escalates, with the possibility of fixing the situation and retaining the benefits obtained.
10. We can do it for you
If you don’t know the difference between compliance and tax assessment and have received a communication, we can handle it for you. If you need this service, we can help you.
We assist you with:
- Analysis of the letter and the reported anomalies
- Choice of strategy: voluntary correction, amended return, adhesion
- Management of deadlines and contacts with the Tax Authorities
11. In conclusion
Understanding the difference between compliance and tax assessment is essential to avoid ending up in a difficult tax situation and to take action in time with the right countermeasures.
Thanks to this text you have:
- Learned what compliance and tax assessment are
- Understood the scale and timing of the 2025–2027 plan (7.5 million letters)
- Got to know the practical and legal differences between the two phases
- Received a ready-to-use calendar
- Learned that our firm can help you concretely


