Invoice format and locale facts for Italy

Why these defaults?

The country code comes from ISO 3166. Unicode CLDR supplies presentation-oriented locale, currency, paper, date, language, calendar, numbering, and direction metadata. Defaults reduce setup time; they do not decide what a valid document must contain.

Recorded official or regional-official language tags: it, fr, vec.

Selected national claims reviewed

Document vocabulary and checks

Core Italian ordinary-invoice particulars, ten-year invoice/accounting-record retention, compliant electronic preservation and the SdI validation/transmission boundary are reviewed from Revenue Agency and official legislation sources. This local Fattura is not an SdI-issued or legally preserved electronic invoice. Current XML versions, exemptions, cross-border and consumer paths, corrections and transaction-specific VAT treatment remain separate checks.

Evidence snapshot: 3 official sources · last reviewed 2026-07-19. This is scoped guidance, not a jurisdiction-wide compliance certification.

Tax labels: IVA. Business identifier labels: Partita IVA / Codice Fiscale.

• Required when applicable: An ordinary Italian invoice uses the minimum fiscal data required under article 21 or 21-bis of DPR 633/1972, including supplier and customer identifiers, invoice number and date, description and quantity or quality of goods or services, taxable amount, VAT rate and tax. Electronic invoices also carry the recipient's telematic address.Evidence IT_DPR_633_CURRENT, IT_AE_EINVOICE_GUIDE · reviewed 2026-07-19 · review by 2027-01-19 · automation advisory only
• Required when applicable: Accounting records, received invoices and copies of issued invoices are generally retained for ten years under Civil Code article 2220. Electronic invoices must also be preserved through a legally compliant electronic-conservation process; unresolved tax or other proceedings can require longer preservation.Evidence IT_NORMATTIVA_ART_2220, IT_DPR_633_CURRENT · reviewed 2026-07-19 · review by 2027-01-19 · automation advisory only
• Required when applicable: In-scope Italian electronic invoices are prepared in the prescribed electronic format and transmitted through Sistema di Interscambio, which checks mandatory fiscal data and identifiers and returns delivery or rejection evidence. This printable Formnivo document is not an SdI invoice: it does not generate current FatturaPA XML, authenticate, transmit, validate or preserve the regulated original.Evidence IT_DPR_633_CURRENT, IT_AE_EINVOICE_GUIDE · reviewed 2026-07-19 · review by 2027-01-19 · automation advisory only

Identifier format guidance: See the relevant authority.