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What is E-Reporting? How Digital Tax Reporting Works Across Europe

7 min readSAF-T Validator Team

E-reporting is the obligation for businesses to digitally submit structured transaction data to tax authorities. Unlike e-invoicing, which concerns the invoice document exchanged between trading partners, e-reporting focuses on transmitting key data extracts (amounts, VAT, counterparty identifiers) directly to the government. The goal is to give tax authorities near-real-time visibility into economic activity, enabling faster VAT gap detection, pre-filled tax returns, and reduced fraud. As more countries adopt digital tax frameworks, understanding e-reporting is essential for any business operating across borders.

In short: E-invoicing is about how businesses exchange invoices with each other. E-reporting is about how businesses report transaction data to the tax authority. Many countries now require both.

E-Reporting vs E-Invoicing: What Is the Difference?

The two terms are often used interchangeably, but they refer to distinct obligations. The table below clarifies the key differences.

AspectE-InvoicingE-Reporting
What is transmittedThe full structured invoice document (UBL, CII, Factur-X, or similar)An extract of key transaction data (amounts, VAT, dates, counterparty IDs)
Who receives itThe business counterparty (buyer or seller)The tax authority
Primary purposeReplace paper and PDF invoices with machine-readable documentsProvide the government with visibility into transactions for VAT control
Typical scopeB2B and B2G transactionsB2C, cross-border, and transactions not covered by e-invoicing
FrequencyPer transaction (each invoice is exchanged electronically)Per transaction or in periodic batches, depending on the country
ExamplesItaly SDI, Poland KSeF, Germany B2B e-invoicingFrance e-reporting, Spain SII, Hungary RTIR, Greece myDATA

In many countries, e-invoicing and e-reporting are complementary. For example, France’s 2026 mandate requires e-invoicing for domestic B2B transactions and e-reporting for B2C and cross-border transactions. Together, they give the tax authority a complete picture of a company’s taxable activity.

How E-Reporting Works in Practice

The typical e-reporting data flow involves three steps:

  • 1. Business issues an invoice. The seller creates an invoice for the buyer, whether on paper, PDF, or as a structured electronic document.
  • 2. Key data is extracted and transmitted. An extract of the invoice data (supplier and buyer identifiers, invoice date, taxable amounts, VAT breakdown) is sent to the tax authority, either directly or through a certified intermediary platform.
  • 3. Tax authority processes the data. The authority uses the reported data for VAT gap analysis, cross-checking declared returns against actual transaction volumes, and in some cases pre-filling VAT returns for businesses.

The reporting frequency varies by country. Some require near-real-time submission (within hours or days of the transaction), while others accept periodic batch submissions. The trend across Europe is clearly moving toward shorter reporting windows, with several countries now requiring data within 4 to 8 days of the transaction.

Key distinction: E-reporting does not replace the invoice itself. The buyer still receives the original invoice document. E-reporting is an additional obligation to share transaction data with the government.

Countries with E-Reporting Requirements

E-reporting obligations are spreading rapidly across Europe. Below are the key countries with active or planned e-reporting mandates.

France

France’s September 2026 e-invoicing mandate includes a parallel e-reporting obligation. While domestic B2B invoices flow through the Portail Public de Facturation (PPF) and certified Plateformes Agréées (PAs), e-reporting covers transactions outside that perimeter: B2C sales, cross-border B2B transactions, and payment status data. Large and medium enterprises must begin e-reporting from September 2026, with smaller businesses following on extended timelines.

Belgium

Belgium’s e-reporting strategy relies on the 5-corner Peppol model, where the Peppol network handles B2B e-invoice exchange and the fifth corner (FPS Finance) receives copies of transaction data directly from the network. Following the decommissioning of the Hermes platform at the end of 2025, Belgium plans to introduce full e-reporting capabilities from 2028, building on the mandatory B2B e-invoicing requirement that took effect in January 2026.

Spain

Spain’s Suministro Inmediato de Información (SII) system is one of Europe’s earliest forms of e-reporting. Since 2017, large businesses (turnover above EUR 6 million) must report invoice data to the Agencia Tributaria within 4 days of issuance or receipt. SII does not require the invoice itself to be electronic, only that the key data fields are reported digitally. The newer VeriFactu system extends similar reporting requirements to smaller businesses.

Hungary

Hungary’s Real-Time Invoice Reporting (RTIR) system, operated by NAV (the Hungarian tax authority), requires businesses to report invoice data in real time. Since July 2018, all B2B invoices above a VAT threshold must be reported electronically within seconds of issuance. Hungary has progressively lowered the threshold, and today virtually all invoices must be reported. This real-time approach has significantly reduced Hungary’s VAT gap.

Greece

Greece’s myDATA platform functions as a real-time e-reporting system. Businesses must transmit income and expense classification data to the AADE (Independent Authority for Public Revenue) through myDATA. The platform creates a digital "book of accounts" for each taxpayer, cross-referencing reported income against expenses claimed by counterparties. This enables automated detection of discrepancies and undeclared transactions.

EU ViDA Digital Reporting Requirements

The European Commission’s VAT in the Digital Age (ViDA) initiative includes a Digital Reporting Requirements (DRR) pillar that will create EU-wide e-reporting obligations for cross-border B2B transactions. Under the agreed ViDA framework:

  • From July 2030: Businesses must digitally report cross-border B2B transactions to their national tax authority using a standardised format based on EN 16931
  • Real-time reporting: Data must be submitted within a short window after the invoice is issued, enabling near-real-time cross-border transaction monitoring
  • Structured e-invoicing mandate: Intra-EU B2B supplies will require structured electronic invoices, replacing the current paper-based system for cross-border trade
  • National alignment: Member states with existing domestic e-reporting systems (France, Spain, Hungary) must ensure their systems are interoperable with the EU-wide framework

ViDA’s DRR pillar represents a fundamental shift: rather than relying on periodic VAT returns filed months after transactions occur, tax authorities will receive transaction-level data in near-real-time across all 27 member states. This is expected to significantly reduce the estimated EUR 60 billion annual intra-EU VAT fraud.

How E-Reporting Relates to SAF-T

Both e-reporting and SAF-T (Standard Audit File for Taxation) provide tax authorities with structured, machine-readable financial data, but they operate at different frequencies and serve different purposes.

AspectSAF-TE-Reporting
FrequencyPeriodic (monthly, annually) or on-demand during auditsNear-real-time or within days of each transaction
Data scopeComprehensive: general ledger, master files, source documents, full accounting recordsFocused: key invoice fields (amounts, VAT, dates, counterparty IDs)
Primary useTax audits, compliance verification, forensic analysisVAT gap monitoring, pre-filled returns, fraud detection
FormatOECD SAF-T XML schema (country-specific adaptations)Varies by country (XML, JSON, or API-based submissions)
ExamplesLuxembourg FAIA, Portugal SAF-T (PT), Norway SAF-T Financial, Poland JPKFrance e-reporting, Spain SII, Hungary RTIR, Greece myDATA

In practice, many countries are adopting both approaches. SAF-T provides the deep, comprehensive data set needed for thorough audits, while e-reporting provides the real-time transaction flow needed for ongoing VAT monitoring. Businesses operating in multiple jurisdictions may need to support both: SAF-T file generation for countries like Luxembourg and Portugal, and real-time e-reporting for countries like Spain and Hungary.

Action Items for Businesses

With e-reporting mandates expanding across Europe, businesses should prepare now:

  • Map your obligations. Identify which countries you operate in that require e-reporting, and note the specific deadlines and data requirements for each.
  • Assess your data readiness. E-reporting requires clean, structured transaction data. Review whether your ERP and invoicing systems can extract the required fields automatically.
  • Coordinate with your e-invoicing strategy. In countries that require both e-invoicing and e-reporting, the two obligations often share infrastructure. Choose platforms and providers that support both.
  • Plan for ViDA. Even if your current markets do not yet require e-reporting, the EU-wide DRR mandate from July 2030 will affect all businesses with cross-border B2B activity.
  • Validate your SAF-T files. If you operate in SAF-T countries, ensure your periodic file submissions are accurate. Use validation tools to catch errors before filing.
E-reporting is not a future concern. It is already live in several major European markets, and the EU’s ViDA initiative will make digital reporting a requirement for all cross-border B2B transactions by 2030. Businesses that invest in data quality and reporting infrastructure today will be well-positioned as requirements expand.

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