Italian invoicing requirements – mandatory customer data

Hello,

I’m writing to inform about some mandatory invoicing requirements for Italy, which are necessary to issue legally compliant invoices to Italian customers.

In Italy, invoices must be issued electronically and specific customer data must be collected depending on whether the buyer is a private individual or a business/company.

1. Private individuals (B2C)

To issue a valid invoice to private customers in Italy, we are required to collect the following data:

• First name
• Last name
• Full address
• Tax Code (Codice Fiscale)
• PEC (Certified Email Address)
• Email address
• Phone number

2. Businesses / Companies (B2B)

For businesses or self-employed professionals, we are required to collect:

• Business name / Legal name
• Registered legal address
• Tax Code (Codice Fiscale)
• VAT Number (Partita IVA)
• PEC (Certified Email Address)
• SDI Code (Sistema Di Interscambio – electronic invoicing identifier)
• Contact email
• Contact phone number

These fields are mandatory in order to correctly generate and transmit electronic invoices through the Italian tax system (Agenzia delle Entrate).

I wanted to share this information so you can evaluate:

• required billing fields for Italy
• form field availability / validation
• invoicing and export compatibility for Italian users

If you need any clarification about Italian invoicing rules or real-world use cases, I’ll be happy to help.

Thank you for your work and support.

Best regards,
Roberto Catto