Registering a business with the Italian Companies Register through ComUnica

Elena has signed the lease on a small pastry workshop in Verona and has already spent €18,000 on ovens and counters. Her accountant asks her one question: does she have a digital signature and a certified email address in the business's name? Without both, the business cannot be born, because registration goes through a single online filing.

Who must register

The Registro delle imprese, the Italian business register, is kept by the chambers of commerce. It is the public record where each business discloses who runs it, where it is based, what it does and how it is organised. A customer or bank checking who they deal with pulls an extract, a visura, from it.

The Agenzia delle Entrate page on setting up a company lists the activities that make registration compulsory: producing goods and services, acting as an intermediary in the movement of goods, carrying goods or people, banking and insurance, and the activities that support them, such as agency and brokerage.

Farming is treated differently. The same page says registration is optional below a certain turnover, without stating the figure. A small grower should therefore check their own position with the competent chamber of commerce rather than assume an exemption applies to them.

A self-employed professional who does not run a business takes another route entirely: they open a VAT number with form AA9/12, filed directly with the Agenzia delle Entrate, and never touch the register. That route has its own course. This one deals only with businesses.

One filing, several recipients

The Comunicazione Unica, usually shortened to ComUnica, has been the compulsory online procedure since 1 April 2010. A single submission covers the register itself and, at the same moment, the tax side with the Agenzia delle Entrate, social security with INPS and accident insurance with INAIL.

The filing always goes to the register, and only there. The register's system then routes each part automatically to the administration concerned. The Romagna chamber adds the register of artisan businesses to the list of recipients; the Rome chamber adds the municipal one-stop shop for business activities, known as SUAP.

Technically, a ComUnica is a bundle of files. A summary model carries the filer's details, the purpose of the filing and a recap of the requests. Next to it sit one or more specific models, one for each body that the filing concerns.

Each administration keeps control of its own review. The Reggio Calabria chamber says it plainly: the register, INAIL, INPS and the Agenzia each handle the requests contained in the filing and each tells the business the outcome. A social security question is settled with INPS, not with the chamber.

The procedure is not limited to the day a business is born. The same page says it applies to later requests, to notices of change and to closure. Moving the registered office, appointing a new director or winding the business up all travel on the same track, under the same summary model.

The tools to have before you start

According to the Agenzia delle Entrate, sending a Comunicazione Unica requires three things: joining the free Telemaco service, holding a digital signature and having a certified email address. The chambers add the obvious extras, an internet connection and software to fill in the filing.

• A valid digital signature device, on a smart card, a USB key or as a remote signature
• An active PEC mailbox, where the administrations involved will send their notices and documents
• A Telemaco account, opened with SPID, CNS or CIE, topped up with prepaid funds for fees and stamp duty
• A filing application such as DIRE, the chambers' free web tool

The certified mailbox is not a formality. The Reggio Calabria chamber states that filing a ComUnica presupposes that the business has its own PEC address. That is where every document and notice from the administrations about the filing will arrive, with legal effect.

Be careful about whose mailbox you give. The address must belong to the business, not to the adviser preparing the filing or to a relative. The rules on this digital address, and the penalties for not keeping it live, are the subject of the second module; it is worth reading them before choosing a PEC provider.

Telemaco is the chambers' service for sending filings and searching their databases. The Romagna chamber explains that, once registered, you top up a prepaid online balance by card or bank payment. Filing fees and stamp duty for each submission are then drawn from that balance.

To prepare the filing, the chambers provide DIRE, a web application that guides you either by type of formality or by model, and that is gradually replacing older tools. There is also Pratica semplice, which lets the owner of a sole business send a few basic formalities alone, such as registration or notifying the PEC address.

Who signs the filing

For years, entrepreneurs without a digital signature signed a paper special power of attorney by hand and let an intermediary do the sending. That door has closed. The Genoa chamber withdrew the paper proxy from 1 December 2023 for companies and from 1 March 2024 for sole traders.

Since then the person under the obligation signs with their own device: the sole trader, the director, the liquidator, the statutory auditor. An intermediary, whether a trade association, a filing agency or a professional, can still prepare and send the filing, but adds its own signature next to the declarant's rather than replacing it.

The rule applies to every formality, not just the first one. Genoa notes, for example, that each director appointed or reappointed must digitally sign the application to register their own appointment. A limited company with three directors therefore needs three digital signatures, which can be gathered on a dedicated signature form.

Dates differ between chambers, since each set its own transition; Genoa describes a process that most chambers had already begun. The practical consequence is the same everywhere: anyone opening a business needs a digital signature of their own and should check its expiry date before starting the filing.

A few exceptions remain, mostly for the very last formality in a business's life. Genoa still accepts the paper proxy, for instance, to deregister a sole business or a company, where the hand-signed declaration is attached together with a copy of the signatory's identity document.

When trading can begin

The Romagna chamber is unambiguous: the ComUnica receipt entitles the business to start trading immediately, provided the other legal requirements are met. For a sole business, the start date declared cannot therefore be earlier than the date on which the filing was submitted.

Someone not yet ready to trade can still register. A sole business can be entered without an immediate start of activity, as an inactive business. That is useful when registration and a VAT number are needed to sign contracts or order equipment while real trading will only begin later.

Many activities also need a SCIA, the certified notice of start of activity, sent to the municipal one-stop shop. The Rome chamber describes two options: file the SCIA on the SUAP portal and then the ComUnica with the register within 30 days, or file both together through the register.

Protocol numbers, suspensions and corrections

ComUnica filings receive their protocol number automatically, but only within office hours. The Reggio Calabria chamber says automatic protocol runs until 7 pm; a filing sent later, or on a Saturday or public holiday, is numbered on the first working day after sending. If timing matters, send during the day.

While reviewing, the register office may suspend a filing and ask for it to be put right within a reasonable time. There are two ways to respond: attach the missing documents, or resend the whole filing when the errors lie in the register's own forms.

Resending has a limit that catches many people out. The Romagna chamber warns that the forms for the Agenzia delle Entrate or INAIL cannot be filled in again, because they were already passed on when the protocol number was issued. An error in another body's form has to be taken up with that body directly.

For questions about a suspended filing there is only one channel: the message log that opens with the suspension, inside the correction area of the filing. After every action, even a simple message, you must close the correction, otherwise the chamber official handling the case will not see it promptly.

To get a filing right first time, chambers offer SARI, the specialist support service for the register, with fact sheets on the main formalities and a way to send written questions. The Romagna and Cagliari-Oristano chambers both point users to it. Reading the relevant sheet before sending avoids most suspensions.

Changes and deregistration

During a business's life, every fact that alters the registered data is notified with a new filing: moving the office, changing the activity, appointing or removing directors, opening a local branch. The summary model stays the same; what changes are the attached forms and the bodies the change concerns.

The register is not a dead archive. Banks, suppliers and public bodies read the extract to check who represents the business and where it receives documents. A departed director still on record, or an office long since vacated, has real consequences: lost notices, disputed signatures, checks that do not add up.

At the end of the road, the Agenzia page reminds companies that they must be removed from the register after dissolution and any liquidation. The request is a Comunicazione Unica with the register's form, completed with forms for the Agenzia, INPS, INAIL or the SUAP where the closure involves them too.

One thing almost never travels with a ComUnica: the filing of the annual accounts. Chambers expressly exclude it from the procedure, the only exception being the final liquidation accounts. The yearly accounts follow a filing of their own, covered in the course on the accounts of an Italian limited company.