Filing DAC6 reporting


Filing DAC6 reporting

Mandatory exchange of information under DAC6

What is at stake?

Since 1 January 2021, concerned taxpayers and intermediaries must comply with DAC6’s reporting requirements.

DAC6 reports are filed on MyGuichet, either by completing an online form or uploading an xml file. LuxTrust access is required.

In case of non-compliance with DAC6, intermediaries and/or taxpayers may be subject to penalties of up to EUR250,000 per unreported/late or false reporting in Luxembourg.

Reports must be sent to the tax authorities within 30 days beginning when:

  • The arrangement is made available or is ready for implementation
  • The first step of the implementation was taken; or
  • Aid, assistance or advice was provided.

Our process

Phase 1
Data Gathering

  • Deloitte provides an Excel document to collect the necessary information to file the reporting.
  • We send you a user guide to help you complete the Excel document.
  • If you already work with Deloitte on the transaction to be reported, this key information is pre-populated.

Phase 2
Filing DAC6 reporting

  • The reporting are either filed through completing an online form or uploading an xml file.
  • We use our Deloitte LuxTrust access to file on your behalf.

Phase 3
Proof of reporting

  • We receive proof of filing through an arrangement ID, which can be exchanged with other affected parties.

Our objectives


To file the reporting in due time. We will send you the arrangement ID of each reporting filed.


To send you a detailed Excel document that allows us to capture the key elements required to properly file the reporting.


To provide automated reporting if notified by Deloitte Luxembourg. We can report on your behalf based on the information gathered during our tax assistance.

What we offer?

  • A pragmatic and automated approach to convert information into an XML file that complies with the Luxembourg XSD scheme.
  • Seasoned experience with filing operational tax reportings.
  • A simple, transparent and competitive fee schedule. Our commitment to you is “no surprise fees”.

Who can benefit?

  • Any intermediary or taxpayer that is under DAC6’s scope.

Discover our full DAC6 service offering

Regulations and guidance

  • Monitoring of local regulations and guidance
  • Identification of any deviations from EU standards
  • Adjustment of implementation and design of tailored policy according to local deviations

> DAC6 MDR Radar

> Understanding DAC6

Retrospective impact assessment and reporting

  • Identification of potentially affected entities and stakeholders regarding past EU transactions
  • Analysis of intermediary versus relevant taxpayer reporting requirements
  • Assistance with reporting requirements within a set deadline (reporting filed by Deloitte on your behalf)

Methodology and oversight for prospective projects

  • Establishment of an internal and external procedure to manage and identify prospective DAC6 reportable transactions among intermediaries/countries
  • Creation of guidelines and a decision tree for internal and external stakeholders

> DAC6 Reporting

DAC6 technology solution

Implementation of a tailor-made solution to track and report transactions, which considers country specificities, data analysis, dashboarding requirements and workflow

> DAC6 IT Technology

Communication and training

  • Provision of DAC6 knowledge management and training or e-learning and key takeaways for internal or external procedures

> DAC6 E-Learning

Governance and controls

  • Establishment of a governance framework
  • Creation of a client key escalation process/guidance for reportable transactions
  • Assessment of governance through a scoring based on a specific questionnaire (“DAC 6 Readiness”)

> DAC6 Readiness


Eric Centi

Eric Centi

Partner | Financial Services Tax

Eric has 20 years of experience as a tax consultant. He is based in Luxembourg and worked in other financial centres such as London and Paris. Eric leads the Financial Services Industry (FSI) Tax prac... More

Julien Lamotte

Julien Lamotte

Partner | Global Employer Services & Financial Services Tax

Julien Lamotte joined Deloitte in 2016. He serves as Tax partner in the Financial Services and is bringing his expertise in this market since 2006. He is also leading the Global Employment Services pr... More

Carole Hein

Carole Hein

Managing Director | Financial Services Tax

Carole Hein joined Deloitte in 2019, and currently serves as Managing Director in the Global Financial Services Industry (GFSI) department. Carole Hein has over 22 years of experience. She notably ass... More

Anthony Tremblier

Anthony Tremblier

Director | Financial Services Tax

Anthony is a Director with Deloitte Luxembourg Financial Services (FSI) tax practice and has more than 12 years of professional experience. He is specialized in Operational Taxes and as such has parti... More

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