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Italy E-Invoicing: Updated Technical Specifications and Controls

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Italy E-Invoicing: Updated Technical Specifications and Controls – A Decade of Continuous Evolution (Latest update: March 2026)

Summary

  • Italy has issued an updated version of Allegato A – Technical Specifications (v.1.9.1) as of 31 March 2026, introducing new validation controls, updated accreditation procedures, and additional codifications within the XML invoice.
  • Recent updates (2024–2026) continue to fine-tune controls, document types, fiscal regimes, and sector‑specific use cases, confirming Italy’s mature but highly dynamic clearance-based e‑invoicing system.
  • The long update history shows a progressive shift from basic compliance to data quality, fraud prevention, and process automation, making Italy a reference model for EU-wide digital VAT initiatives, including ViDA.

Article

  1. Context: Italy’s e‑Invoicing Framework as a Living System

Italy’s electronic invoicing system, based on mandatory clearance through the Sistema di Interscambio (SdI), has been in force since 2019 but remains under continuous technical refinement. The long list of updates to Allegato A – Specifiche tecniche and related documentation demonstrates that Italian e‑invoicing is not a static compliance obligation, but a living digital infrastructure.

Updates typically address:

  • new legal requirements,
  • interpretation issues emerging from practice,
  • sector‑specific needs,
  • tighter validation and fraud controls,
  • technical optimisation of transmission channels (PEC, WS, SDIFTP).
  1. The Latest Update: 31 March 2026 – Version 1.9.1

With the publication of Allegato A – Specifiche tecniche version 1.9.1, the Italian Revenue Agency introduced several targeted but important changes:

Key elements of the March 2026 update include:

  • New control 00327, reinforcing invoice validation rules at SdI level and strengthening preventative compliance checks.
  • Updated accreditation procedures for WS and SFTP channels, reflecting higher security and operational standards for structured transmission.
  • New codification within the “AltriDatiGestionali” block to correctly report income invoiced in exemption by sports workers, responding to specific domestic tax rules.
  • Increase in the maximum number of available “codici destinatario”, improving scalability for software providers and large taxpayers.

These changes continue the trend of enhancing data quality, traceability and sector specificity, without altering the fundamental clearance logic of the Italian model.

  1. 2025 Developments: Expanding Scope and Alignment with EU Law

Updates released in January and March 2025 (version 1.9) were more structurally significant:

  • Introduction of TD29, allowing the reporting of omitted or irregular invoicing directly to the tax authorities.
  • Introduction of Regime Fiscale RF20, reflecting the new EU VAT exemption regime for SMEs under Directive (EU) 2020/285.
  • Adjustments to fuel and gasoil codifications aligned with Customs and Excise (ADM) product tables.
  • Relaxation of the €400 limit for simplified invoices when issued by taxpayers under flat‑rate or EU SME exemption regimes.

These changes show how Italian e‑invoicing serves not only domestic VAT control, but also EU‑driven harmonisation objectives.

  1. 2023–2024: Refinement, Error Handling and Special Regimes

The 2023–2024 updates (versions 1.8 and 1.8.x) focused on:

  • introducing optional codifications in AltriDatiGestionali for special VAT regimes (e.g. agriculture),
  • new rejection controls for invalid letters of intent,
  • clarifications on handling non‑established but VAT‑identified entities,
  • numerous corrections to error messages, validation logic and tabular representations.

Notably, these years were characterised less by structural change and more by operational refinement, reflecting a mature system dealing with real‑life edge cases.

  1. Earlier Years: Building the Clearance Backbone (2018–2022)

From 2018 to 2022, the updates laid the foundation of today’s system:

  • introduction of new document types (TD17–TD28) for reverse charge, San Marino transactions and cross‑border purchases,
  • gradual elimination of the esterometro in favour of full e‑invoice reporting for cross‑border transactions,
  • expansion of validation controls on VAT nature codes, document types, amounts and party identification,
  • continuous evolution of XSD schemas and transmission rules.

This period marks Italy’s transformation from an electronic reporting regime into a fully embedded clearance system.

  1. Key Takeaway for Multinationals and Vendors

The Italian experience clearly illustrates that e‑invoicing compliance is not a one‑off IT project. Instead, it requires:

  • continuous monitoring of technical updates,
  • agile ERP and middleware configurations,
  • strong governance between tax, IT and business teams.

With ViDA (VAT in the Digital Age) on the EU agenda, Italy’s timeline serves as an early indicator of what incremental, data‑driven VAT control may look like across Europe.

Conclusion
The March 2026 update confirms a clear pattern: Italian e‑invoicing evolves through frequent, granular technical adjustments rather than major disruptive reforms. For companies operating in Italy – or preparing for EU‑wide digital reporting – mastering these details is essential to stay compliant, automate processes, and reduce audit risk

Source Agenzia Entrate

Briefing Document & Podcast: Italy’s E‑Invoicing, E‑Reporting, and E‑Transport: Scope, Timeline & Key Details – VATupdate

  • New Technical Specifications for electronic invoicing (version 1.9.1) will apply from May 15, 2026.
  • A new SdI check (error code 00327) for VAT Groups will reject invoices if the VAT Group tax code is incorrectly indicated.
  • Accreditation procedures for WS and SFTP channels have been updated; service providers can now request up to 300 recipient codes (previously 100).
  • New coding “ESENZSPORT” introduced for income invoiced by sports workers under the tax-exempt regime, up to €15,000 per year.

Source: blog.pwc-tls.it

 

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