Electronic invoice in Italy
Italy operates a comprehensive clearance system where all B2G, B2B and B2C invoices must be transmitted through the government platform Sistema di Interscambio (SdI).
Overview
Italy operates the most mature mandatory e-invoicing regime in the European Union. Every domestic invoice — B2B, B2G and B2C alike — must pass through Sistema di Interscambio (SdI), the central platform run by the Agenzia delle Entrate. An invoice that SdI rejects is treated as never having been issued.
This is a centralised clearance model, not a Peppol network. Peppol exists in Italy as an interoperability layer for public procurement and cross-border exchange, but it does not replace SdI for tax purposes. Anyone planning an Italian rollout needs to design around that distinction from the start.
SdI
every domestic invoice clears the state platform
FatturaPA
the national XML format, not a flavour of UBL
10 years
certified digital preservation, conservazione a norma
Timeline
Italy started earlier than anyone else in the EU and has been extending scope ever since. The mandate is fully in force — what remains ahead is alignment with the EU framework.
Already in force
6 June 2014 – 31 March 2015
B2G becomes mandatory
Central government from June 2014, all remaining public bodies including regional and local authorities from March 2015. All supplier invoices to public administration route through SdI.
1 January 2019
Domestic B2B and B2C become mandatory
Invoices between parties resident or established in Italy may be issued only in electronic form through SdI. The same applies to consumer invoices where an invoice is required or actually issued.
1 July 2022
Cross-border reporting moves into SdI
The old quarterly esterometro return is replaced by transaction-by-transaction reporting through SdI for dealings with parties not established in Italy.
1 January 2024
The last exemptions fall away
The flat-rate scheme (regime forfettario) and the remaining small taxpayers are brought in, regardless of the turnover thresholds that previously exempted them. Scope is now effectively universal.
Still ahead
1 July 2030
ViDA cross-border requirements
EU-wide e-invoicing and Digital Reporting Requirements apply to intra-community B2B transactions, on the European standard rather than on FatturaPA.
By 1 January 2035
Domestic model aligns with the EU
Existing national real-time reporting systems, Italy's included, must be brought into line with the European model. How far FatturaPA converges towards EN 16931 is the open question of the decade.
SdI technical specifications are revised periodically — version 1.9.1 took effect on 15 May 2026. Schema updates are not optional: an invoice built against a withdrawn version will be rejected. Confirm with your provider that the current specification is implemented.
How SdI works
The flow is deliberately linear: supplier → SdI → recipient. There is no direct exchange between trading partners for in-scope transactions, and no way to agree a bilateral alternative.
01
The invoice is created in FatturaPA XML
Generated in your ERP or through a provider, in the national schema. Not UBL, not CII, not PDF.
02
SdI validates it
Structural and formal checks run centrally. A failed invoice comes back with a rejection notice and is legally not issued — it must be corrected and resubmitted within the statutory window.
03
SdI delivers it to the recipient
Routing uses the recipient's codice destinatario or certified email address (PEC). Where neither is available, the invoice is made available in the recipient's tax portal.
04
Delivery receipts return to the sender
SdI issues machine-readable notices for acceptance, delivery, failed delivery and rejection. These receipts are the evidence that the invoice exists.
Is this clearance or reporting? Both, in effect. SdI does not approve the commercial substance of the transaction, but it does decide whether the invoice legally exists — which puts Italy firmly in the clearance camp rather than alongside the Peppol reporting models used in Belgium or Slovakia.
Who is in scope
B2B
Mandatory. All invoices between parties resident or established in Italy, with no turnover threshold since 2024.
B2G
Mandatory since 2014–2015. Public bodies must additionally be able to accept EN 16931 invoices under Directive 2014/55/EU.
B2C
Mandatory through SdI where an invoice is required or actually issued. The consumer receives a readable copy; the SdI original remains the tax document. This is unusual — most EU mandates leave B2C out entirely.
Cross-border
Not invoiced through SdI, but reported through it transaction by transaction.
For foreign businesses
The test is whether you are resident or established in Italy. A non-established business with only an Italian VAT registration is outside the domestic issuing mandate — but its Italian counterparties will still report the transaction through SdI, and a permanent establishment brings you fully into scope.
Formats and standards
This is where most international implementations go wrong. Italy has a national format, not a national flavour of the European standard.
FatturaPA XML
The mandatory format for every domestic invoice through SdI. A distinct national XML schema — not a syntax of EN 16931.
EN 16931 — UBL 2.1 and CII
Used for European B2G invoices and Peppol exchange. AgID publishes Italian Peppol BIS Billing specifications with national rules and translation schemes to FatturaPA.
Domestic B2B / B2CFatturaPA XML through SdI
Domestic B2GFatturaPA XML through SdI
European B2G invoiceUBL 2.1 or CII to EN 16931, processed through the national framework
PeppolUBL with Italian Peppol BIS rules where applicable
PDFVisualisation or copy only — never the tax document
None of these substitute for SdI: a PDF by email, a UBL file sent directly, a CII file, a Peppol invoice without SdI integration, or proprietary EDI straight to the buyer. Any of them may exist alongside as a commercial document, but for an in-scope domestic transaction the only valid invoice is the FatturaPA file accepted by SdI.
Cross-border reporting
Transactions with parties not established in Italy are not invoiced through SdI — but their data is reported through it, one transaction at a time. This replaced the old quarterly esterometro filing in July 2022.
TD17Services purchased from abroad
TD18Goods purchased from within the EU
TD19Goods purchased from outside the EU
Outbound sales are reported on issuing, purchases through a self-billing or integration document within the statutory deadline. In practice this means an Italian business runs two parallel data flows — full invoices domestically, structured reports across the border — and both have to be right.
Peppol and providers
Peppol matters in Italy, but not in the way it does elsewhere. It is an interoperability layer for public procurement and international exchange; it is not the tax compliance channel.
Sending to and from Italy over Peppol
A foreign EU-certified Access Point can exchange Peppol invoices with Italy without additional national onboarding. AgID has confirmed this explicitly.
Acting inside the Italian Peppol domain
Operating as an AP or SMP within the Italian domain, or handling Italian-specific scenarios such as Peppol receipts for public administration, does require separate AgID qualification.
The point that catches people out: Peppol certification does not grant access to SdI. A direct machine-to-machine SdI channel is a separate accreditation with its own technical and contractual requirements. Most providers therefore reach SdI through an accredited intermediary rather than building their own channel.
Penalties
The penalty regime was reformed, and much of the commentary online still quotes the old figures. These are the current rules under Article 6 of Legislative Decree 471/1997.
70%
Of the VAT not properly documented
The base sanction for breaching documentation and registration obligations on VAT-taxable transactions.
€250–2,000
Where VAT was calculated correctly
If the breach had no effect on the correct determination of VAT, the fixed range applies instead.
—Non-taxable, exempt or reverse-charge operations: 5% of the consideration not documented or registered
—Cross-border reporting omitted or wrong: €2 per invoice, capped at €400 per month
—Corrected within 15 days of the deadline: halved to €1 per invoice, capped at €200 per month
The heavier consequence is not the fine. An in-scope invoice issued outside SdI is deemed not to have been issued at all — which puts your customer's input VAT deduction, and the commercial relationship, at risk.
Retention
Invoices must be retained for ten years. Italy goes further than most countries here: electronic retention has to follow the certified digital preservation rules — conservazione a norma — set out in the national digital administration framework and AgID guidelines.
The FatturaPA XML file is the original, together with the SdI delivery receipts
Preservation must be certified, with time stamps and an appointed preservation manager — ordinary file storage is not sufficient
The Agenzia delle Entrate offers a free preservation service; many businesses use it, others use a commercial provider
Because the tax authority holds a copy, retention feels solved — but the legal obligation still sits with the business. Deciding early whether preservation runs through the state service or a provider avoids an awkward conversation during an audit.
How we help
As a certified Peppol Access Point we cover the European side of Italian invoicing and connect your systems to the national channel:
Conversion of your invoice data into FatturaPA XML
Peppol BIS Billing 3.0 and UN/CEFACT CII for European B2G and cross-border exchange
Validation before submission — rejections are caught before SdI sees them
Format conversion from ERP, CSV and IDoc data
Integration via API, SFTP and CSV
Traceable status and error feedback, including SdI receipt handling
One connection reused across Italy and the rest of Europe
Frequently asked questions
Can I send a PDF invoice to an Italian customer?
Not as the invoice, if the transaction is domestic and in scope. The tax document is the FatturaPA file accepted by SdI. A PDF may accompany it as a readable copy — and for consumers a paper or electronic copy is expressly allowed — but it never replaces the SdI original.
We are already a Peppol Access Point. Is that enough for Italy?
For exchanging Peppol invoices with Italy, yes — no additional national onboarding is required. For domestic tax compliance, no: Peppol certification does not grant SdI access. A direct SdI channel is a separate accreditation, and acting as an AP or SMP inside the Italian Peppol domain requires AgID qualification.
Does the mandate apply to a foreign company with an Italian VAT number?
The domestic issuing obligation applies to parties resident or established in Italy. A VAT registration without establishment does not by itself bring you in. Your Italian counterparties will nonetheless report the transaction through SdI, so your invoice data reaches the tax authority either way — and a permanent establishment puts you fully in scope.
What happens if SdI rejects an invoice?
The invoice counts as never issued. You receive a rejection notice with an error code, correct the file and resubmit within the statutory window, keeping the original invoice number and date. This is why validating before submission matters: a rejection is not a technical inconvenience but a compliance event.
Are B2C invoices really covered?
Yes, where an invoice is required or actually issued — which sets Italy apart from most EU mandates. The invoice goes through SdI, the consumer receives a readable copy, and the tax original is the SdI document. Ordinary retail receipts remain a separate regime.
How are cross-border transactions handled?
They are not invoiced through SdI but reported through it, transaction by transaction, using document types TD17, TD18 and TD19 for inbound purchases. The quarterly esterometro return was abolished in July 2022. From July 2030 the EU ViDA requirements will apply to intra-community B2B transactions on the European standard.
Who has to archive the invoices?
You do, for ten years, under the certified conservazione a norma rules. Storing the XML on a file server is not compliant — preservation requires time stamps, integrity guarantees and an appointed preservation manager. The Agenzia delle Entrate provides a free service; commercial alternatives exist.
Summary
Italy is the reference case for mandatory e-invoicing in Europe: universal scope since 2024, B2C included, and a central platform that decides whether an invoice legally exists. Businesses trading in Italy have had years to adapt, and the operational questions have shifted from "how do we comply" to "how do we keep up with schema versions".
The strategic tension is the format. FatturaPA is a national schema, not a European syntax, so an Italian implementation cannot simply reuse a Peppol pipeline. The workable approach is a canonical internal model on EN 16931, with FatturaPA generated on the Italian output layer — which is also the architecture that will survive the ViDA convergence expected between 2030 and 2035.
Two mistakes account for most failed Italian rollouts: assuming Peppol certification opens SdI, and treating retention as solved because the tax authority holds a copy. Neither is true, and both surface late.
Resources
Agenzia delle Entrate – Fatturazione elettronica
The tax authority's official section on e-invoicing and SdI (in Italian)
fatturapa.gov.it – format and technical specifications
Schema documentation, technical rules and current specification version
AgID – electronic invoicing and Peppol in Italy
Italian Peppol BIS specifications and qualification of service providers
European Commission – eInvoicing in Italy
Country factsheet covering the legal position and operating model
OpenPeppol
Network, specifications and certified access points
