Tax Audit Revenue Agency Italy: What to do
Receiving a letter from the Italian Revenue Agency (Agenzia delle Entrate) puts anyone on edge — even those with nothing to hide. That reaction is understandable, but the worst thing you can do is ignore it or act alone without knowing the rules. This guide explains what actually happens and what to do step by step.
What is a tax audit (accertamento fiscale)?
A tax audit is the process by which the Agenzia delle Entrate verifies that declarations filed by the taxpayer are correct and complete. Not every letter from the Revenue Agency is an audit — there are several types of communication with very different levels of seriousness.
Types of fiscal communication
1. Notice of irregularity (avviso bonario) The most common and least serious. The Agency has detected an automatic anomaly — e.g. a discrepancy between what was declared and what appears in its databases. Often it is a formal error in the return or a mismatch between an employer’s CU and the 730. Usually straightforward to resolve.
2. Invitation to a hearing or Compliance letters (invito al contraddittorio o lettere di Compliance) The Agency wants to investigate further before issuing a formal act. It is an opportunity to clarify your position and, often, avoid a full audit.
3. Assessment notice (avviso di accertamento) A formal act by which the Agency contests additional income or unpaid tax. It becomes an enforcement title after 60 days from notification if not challenged. Here, timing and action are critical.
4. Tax demand notice (cartella di pagamento) Derives from an already finalised assessment or automatic control. The debt has already been established — it must be paid or challenged within specific deadlines.
Limitation periods for the Revenue Agency
The Agency cannot investigate indefinitely. There are precise limitation periods:
| Situation | Deadline to notify assessment |
|---|---|
| Return filed (standard year) | By 31 December of the 5th following year |
| Return not filed | By 31 December of the 7th following year |
| Criminally relevant violations | Periods doubled |
Practical example: for tax year 2021 (return filed in 2022), the Agency can notify an assessment up to 31 December 2027.
What to do when you receive an avviso bonario
An avviso bonario can be managed independently or with your accountant:
- Read the notice carefully: identify the tax year, the amount contested and the reason given
- Compare with your return: the anomaly often derives from a formal error
- Decide whether to pay with reduction or contest: within 60 days of receipt you can pay with a reduced 10% penalty (instead of 30%)
- Submit written observations: if the anomaly is incorrect, respond to the Agency with supporting documentation
Never ignore an avviso bonario: if you don’t respond within the deadline, the amount becomes final and turns into an enforcement demand.
What to do when you receive an avviso di accertamento
Here the situation is more serious. You have 60 days from notification to decide:
Option A — Acquiescence (pay and close)
Pay the contested amounts with a reduction in penalties (from 1/3 to 1/6 depending on the stage). This is convenient when the amount is small and the contest would be difficult to win.
Option B — Accertamento con adesione (agreed settlement)
Before the 60 days expire, you can request an agreed settlement: a hearing with the office that may lead to a reduction in the contested amount. Penalties are reduced to 1/3 of the minimum. The 60-day deadline is suspended for 90 days during this phase.
Option C — Tax appeal (ricorso tributario)
If you believe the assessment is unfounded, you can appeal to the first-tier Tax Court (Corte di Giustizia Tributaria) within 60 days of notification. Before proceeding, mandatory mediation (reclamo) is required for amounts up to €50,000 — an alternative dispute resolution attempt before litigation.
Important: if you neither pay nor appeal within 60 days, the act becomes final and enforcement action begins.
Main types of tax audit
Analytical audit (accertamento analitico)
The office challenges specific items in the declaration with supporting documentation (e.g. non-deductible costs, undeclared revenues). The most common type, often arising from cross-checks between invoices issued and received.
Synthetic audit (redditometro — lifestyle assessment)
The Agency reconstructs income from expenditure (cars, properties, holidays, investments). If outgoings are disproportionate to declared income, a control is triggered. You can defend yourself by demonstrating that expenses derive from prior savings, gifts, or exempt income.
Inductive audit (accertamento induttivo)
Used when accounting records are absent or unreliable. The office reconstructs income using statistical and presumptive methods. The most difficult to manage, as it reverses the burden of proof.
Former sector studies and ISA reliability indices
The Agency can compare your declared data with the Indici Sintetici di Affidabilità (ISA) for your sector. A low ISA score over several years significantly increases the probability of being selected for a control.
Taxpayer rights during an audit
The Taxpayer Statute (L. 212/2000) guarantees:
- Right to an adversarial hearing: you must be able to present your case before the act becomes final
- Right not to be investigated twice for the same period and tax type (unless new evidence emerges)
- Right of access to documents: you can request copies of all documentation acquired by the office
- Right to representation: you can be represented by your accountant at every stage
How to prevent a tax audit
Prevention is always better than defence:
- Keep orderly, up-to-date accounts: invoice registers, general ledger and bank records must always be in order
- Keep all documentation for 10 years: invoices, contracts, receipts, bank statements
- File returns correctly: formal errors trigger automatic controls
- Monitor your ISA score: if it is low, consider aligning declarations with your accountant
- Never deduct costs without documentation or not related to the business: this is one of the main causes of challenge
Studio CITI snc: assistance during a tax audit in Milan
If you have received a notice from the Revenue Agency, the first step is not to act alone. Our studio manages the entire process: from analysing the act to responding to the office, from agreed settlement to tax appeal, always with the goal of minimising the financial impact.
Tel. 02.450 774 39 — Contact us
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