Luxembourg e-Invoicing Overview

Luxembourg has implemented e-Invoicing for public procurement contracts since 18 March 2023, requiring all economic operators to issue compliant e-Invoices. The country fully adopts the European e-Invoicing standard EN 16931, using Peppol BIS Billing 3.0 and UBL 2.1 formats. The Peppol network connects public sector bodies, with e-Invoice volume increasing from <100 in 2021 to ~1.4 million in 2024.

B2G Mandate

Since 18 March 2023, all economic operators (Luxembourg or foreign) must issue e-Invoices compliant with European standard EN 16931 for public procurement contracts with Luxembourg public sector bodies. This completes the phased B2G e-Invoicing implementation, mandated by the "Law of 16 May 2019," transposing Directive 2014/55/EU. Compliance deadlines: central public bodies (18 April 2019), sub-central entities (18 April 2020), large companies (18 May 2022), medium-sized companies (18 October 2022), and small/new businesses (18 March 2023).

B2B and B2C Mandates

No mandatory e-Invoicing requirements exist for B2B or B2C transactions; usage is optional based on mutual agreements.

e-Invoicing Standard

Luxembourg fully adopts the European e-Invoicing standard EN 16931, using Peppol BIS Billing 3.0 and UBL 2.1 or XML UN/CEFACT CII formats for seamless document exchange. All public sector bodies must process compliant e-Invoices, with Peppol also supporting B2B exchanges for enhanced interoperability.

Operating Model for B2G e-Invoicing

The Peppol network is the backbone for B2G e-Invoicing, connecting public sector bodies via approved access points for secure, efficient processing. Most use the central government’s access point (Ministry for Digitalisation) or SIGI (for municipalities, except Luxembourg City). Operators can submit e-Invoices via Peppol access points, Peppol-ready software (e.g., ERP systems), or manually through web forms on guichet.lu.

Use of CIUS and Extensions

Luxembourg uses Peppol’s Core Invoice Usage Specification (CIUS) without additional national specifications, ensuring consistent application of EN 16931.

Real-Time Reporting

No real-time VAT digital reporting is required in Luxembourg.

Monitoring Mechanism

Since January 2024, Peppol service providers must report monthly on messages sent/received and connected users. Data from the central government and SIGI access points also track e-Invoicing activity. In 2024, ~800 public sector and >1,400 private sector entities used Peppol, processing ~1.4 million e-Invoices (up from <100 in 2021). Luxembourg ranks 11th globally in Peppol usage and 4th relative to its size, with 11 certified Peppol providers.

Highlights

e-Invoice volume surged from <100 (2021) to ~1.4 million (2024).

Many public and private entities send/receive e-Invoices via Peppol for B2B, G2B, and G2G.

Next Steps

Luxembourg plans new legislation to align with the EU’s VAT in the Digital Age (ViDA) directive, enhancing VAT reporting and compliance digitally, effective from July 2030.