SAF-T (Standard Audit File for Tax) is the OECD-developed XML schema that enables tax authorities to request structured financial data from businesses electronically. In 2026, SAF-T adoption is accelerating across Europe, with several new mandates taking effect in 2025 and 2026 and at least 10 countries now enforcing or actively developing SAF-T mandates. For multinational businesses operating within the EU, understanding where each country stands is a compliance imperative.
Since the OECD first published the SAF-T standard in 2005, adoption has been uneven. Early movers like Portugal and Luxembourg have over a decade of operational experience, while newer entrants like Bulgaria launched their mandates only in January 2026. This guide provides a comprehensive country-by-country breakdown of SAF-T status as of March 2026, along with the convergence trends reshaping European tax compliance.
Country-by-Country SAF-T Status
The following table summarises the current SAF-T implementation status across European countries with active mandates or development programs. Status indicators reflect the situation as of Q1 2026.
| Country | Local Name | Status | Key Details |
|---|---|---|---|
| Luxembourg | FAIA | Mandatory | On-demand since 2011. Applies to businesses above the EUR 112,000 annual turnover threshold. Uses FAIA v2.01 schema with Full, Reduced A, and Reduced B variants. |
| Portugal | SAF-T (PT) | Mandatory | Europe's earliest adopter since 2008. Monthly SAF-T billing file required. Accounting file submission has been delayed to 2028 (for the 2027 financial year) following industry feedback. |
| Norway | SAF-T Financial | Mandatory | Mandatory since January 2020 for all VAT-registered businesses. Covers general ledger, accounts receivable/payable. On-demand submission to Skatteetaten. |
| Poland | JPK_VAT / JPK_CIT | Mandatory | JPK_VAT mandatory monthly since 2018. JPK_CIT (corporate income tax) expanding scope progressively. KSeF mandatory e-invoicing launched February 2026 for large taxpayers, April 2026 for all VAT-registered entities. |
| Austria | SAF-T (AT) | Mandatory | On-demand since 2009. Tax authorities can request SAF-T data during audits. Closely aligned with OECD base standard. |
| Lithuania | i.SAF / i.VAZ | Mandatory | i.SAF phased in from 2016, mandatory for all VAT-registered businesses by 2020. Monthly submission of sales and purchase invoices. i.VAZ covers transport and consignment documents. |
| Bulgaria | SAF-T (BG) | New 2026 | Launched January 2026 with a phased rollout. Large enterprises first, with successively smaller enterprises added each year through 2030. Based on OECD SAF-T 2.0 schema. |
| Denmark | SAF-T 2.0 | In Development | Bookkeeping Act (Bogforingsloven) requires SAF-T export capability. SAF-T 2.0 officially released by the Danish Business Authority; registered systems must support it from January 2027. Systems above 300,000 DKK turnover must use certified bookkeeping software. |
| Hungary | SAF-T (HU) | Expected Soon | Hungary already mandates real-time invoice reporting via the RTIR system. SAF-T mandate expected to complement existing requirements. Timeline pending official announcement. |
| Romania | D406 SAF-T | Mandatory | D406 declaration mandatory for large taxpayers since 2022, medium since 2023, small since 2025. A separate D406/D300 cross-validation pilot (September 2025 to August 2026) is testing automated reconciliation between SAF-T and VAT return data. |
Key takeaway: As of Q1 2026, at least 10 European countries have active SAF-T mandates, with several more in pilot or development stages. The trend is clearly toward broader adoption, not retreat.
Convergence Trends: SAF-T Meets E-Invoicing Under EU ViDA
One of the most significant developments in 2026 is the convergence between SAF-T reporting and e-invoicing mandates. The EU's VAT in the Digital Age (ViDA) initiative is driving this merger, aiming to create a unified digital reporting framework across all 27 member states by 2030, with full alignment for countries that have pre-existing domestic systems extending to January 2035.
This convergence is already visible in several countries. Poland's KSeF platform bridges real-time e-invoicing with SAF-T data requirements. France's mandatory e-invoicing rollout uses the PPF as a central directory and tax data hub, with all B2B invoice exchange flowing through certified PAs (Plateformes Agréées), generating structured data that overlaps significantly with SAF-T reporting fields. Romania's D406 SAF-T declaration works alongside its RO e-Invoice system.
What Convergence Means in Practice
- •Unified data models: Countries are increasingly aligning their SAF-T schemas with EN 16931 (the European e-invoicing standard), reducing the number of separate formats businesses must support.
- •Real-time reporting: Traditional on-demand SAF-T submissions are evolving toward near-real-time transaction reporting, driven by ViDA's Digital Reporting Requirements (DRR) pillar.
- •Cross-border harmonisation: ViDA's Single VAT Registration mechanism will reduce the number of country-specific SAF-T adaptations needed for intra-EU transactions.
- •Shared validation standards: format checks, business rule checks, and cross-reference verification are becoming common across both SAF-T and e-invoicing regimes.
What This Means for Multinational Businesses
For businesses operating across multiple EU jurisdictions, the expanding SAF-T environment creates both challenges and opportunities. The primary challenge is managing compliance across countries with different implementation timelines, schema variations, and submission requirements. A company operating in Luxembourg, Portugal, and Poland must currently maintain three distinct SAF-T processes.
Recommended Actions for 2026
- •Audit your ERP's SAF-T capabilities: Ensure your accounting software can generate compliant SAF-T files for every jurisdiction where you operate. Many ERP vendors are still catching up with 2026 requirements.
- •Validate before submission: Submitting a non-compliant SAF-T file can trigger penalties and audit scrutiny. Use validation tools to catch schema errors, missing references, and business rule violations before filing.
- •Monitor ViDA developments: The ViDA implementation timeline (2025-2035) will progressively change reporting requirements. Stay informed about how ViDA affects your specific country obligations.
- •Invest in data quality: SAF-T mandates expose data quality issues that may have been hidden in traditional reporting. Clean master data (chart of accounts, customer/supplier records, tax codes) is the foundation of compliant SAF-T files.
- •Plan for Bulgaria and Romania: If you operate in Southeast Europe, the new Bulgarian mandate and Romania's expanding rollout should be on your 2026 compliance roadmap.
Looking Ahead: 2027 and Beyond
By 2027, we expect Hungary to formalise its SAF-T mandate, Portugal to launch its accounting file requirement, and Denmark to finalise SAF-T 2.0. The EU ViDA framework will begin imposing Digital Reporting Requirements on cross-border B2B transactions, creating a de facto pan-European SAF-T obligation.
Businesses that invest in SAF-T compliance infrastructure today will be better positioned for this converging regulatory environment. SAF-T readiness is now a practical priority for any multinational operating in the EU.
The FAIA Validator helps Luxembourg businesses validate their SAF-T files against the official FAIA v2.01 schema with both format validation and comprehensive compliance checks. As SAF-T mandates expand across Europe, reliable validation tooling becomes essential for maintaining compliance across jurisdictions.