E-Invoicing in Italy

The Italian E-Invoicing Model

Everything You Need to Exchange Invoices 
in Line with the Regulations

If you are doing business in Italy or want to enter this market,
you  need to send invoices in a structured way.  
Check what obligations you need to meet.

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State of E-Invoicing in Italy

As one of the pioneers in Europe for e-invoicing, Italy is always working to provide new regulations to ensure all sectors and users are covered. The government and tax authorities regularly update technical specifications to further improve e-invoicing processes, thus maintaining Italy’s strong position in e-invoicing with a robust compliance model and system.

Archiving requirements for e-invoicing

The legal framework for e-invoicing in Italy, set out in Legislative Decree of December 27, 2018, n. 148, Decree of April 3, 2013, n. 55, applies to public authorities and many other entities. B2G e-invoicing is mandatory for all central administrations, based on European Directive 2014/55/EU. The regulations were introduced gradually from 2014, when the obligation to use electronic financial documents rested only on ministries, tax offices and national security agencies. A year later, in 2015, all public entities in the country were obliged to do so. Italy was also the first EU country to make national e-invoicing mandatory for B2B and B2C. The obligation entered into force on 1 January, 2019.

Implementation timeline

E-invoicing process description

E-invoicing process description

Italy uses the CTC (continuous transaction controls) system for e-invoices. Under the CTC SDI model, companies issue structured invoices in the tax authorities’ XML format, called FatturaPA. In B2G transactions, companies are obliged to issue a qualified electronic signature. This can be done by them or by a service provider. In the public healthcare sector, there is an additional flow of electronic orders via the NSO, which functions in the same way as the SDI. 

What is the required format of an e-invoice

What is the required format of an e-invoice?

The accepted format is FatturaXML for accounts payable and accounts receivable. E-invoices must be issued in a prescribed format, signed digitally to guarantee their authenticity and integrity, and then sent to the exchange system called Sistema di Interscambio (SDI) by the taxpayers themselves or through designated intermediaries. The SDI platform is used mainly between public entities to receive, check, and send electronic invoices. Using PEPPOL is also possible.

What is SDI?

SDI (Sistema di Interscambio) is a national Internet hub that provides a portal for sending and receiving e-invoices. All electronic invoices in Italy must be sent to SDI. All e-invoices are sent via SDI to the customer by identifying the buyer's IPA code.

Comarch is compliant with all standards and regulations connected to the SDI process. We have already helped almost 100 customers to be in line with Italian e-invoicing regulations.

What does the integration of Comarch e-invoicing with SDI look like?

What does the integration of Comarch e-invoicing with SDI look like?

How integrity and authenticity may be ensured?

How integrity and authenticity may be ensured?

According to the AGID (Agency of Digital Italy), which enforces e-archiving rules, each company should be able to provide a time stamp and signature, as well as structured, mandatory metadata in an XML readable invoice in PDF format. A documented description of the archive (Manuale dela Conservazione), together with obligations and responsibilities of the archiving process, are implemented. 

Who is obliged to use e-invoicing


The Italian government is very strict with its e-invoicing system and has applied a set of penalties for users. For the late sending of the electronic invoice to SDI, without consequences on the tax settlement (i.e., with correct periodic VAT settlement), the sanction provided for by art. 6, paragraph 1 of Legislative Decree 471/97 or the amount ranging from Euro 250 to Euro 2,000, for each document not sent or sent late. The deadline for sending the invoice to SDI is 12 days from the date of execution of the operation for immediate invoices and 15 days following the reference month for deferred invoices (with the end-of-month date).

All Italian companies have also been obliged to communicate cross-border invoices. There is an administrative penalty from EUR 2 to EUR 400 for each invoice not communicated correctly. However, the penalty is halved if the invoice is issued and corrected within 15 days.

How can we help

How can we help?

Comarch provides full coverage in terms of conenctivity to the SDI platform, which is used within the existing CTC mandate. Comarch is able to generate or convert in-house formats to the required FatturaPA format. 

Why is Comarch the best choice?

We have 20+ years of experience in carrying out various EDI, e-invoicing, and other document exchange projects around the world. In those years, we have successfully connected more than 130,000 entities from over 60 countries.

  • 1. Legal compliance

    Full compliance with the latest data exchange regulations and modern data transfer standards

  • 2. Digitization

    Applying new technologies and IT solutions in order to streamline workflows and automate activities and procedures

  • 3. Individual approach

    Tailor-made solutions based on processes specific to each company – own road map and a suitable pace of changes

  • 4.Security

    Highest level of security for all sensitive and important company data

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