REGULATORY, 04Aut. 10077274 · 142 Boulevard de la Pétrusse, Luxembourg

DAC6 in Luxembourg, reportable cross-border arrangements.

FSL assists the identification and reporting of cross-border arrangements subject to DAC6: hallmark analysis, preparation and filing of the return. The legal analysis of sensitive situations is coordinated with your lawyer. FSL handles reporting and operational compliance; regulated legal advice and authorisations (CSSF) are coordinated with our partner lawyers.

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In short

DAC6 (Directive (EU) 2018/822) requires reporting to tax authorities of certain cross-border arrangements bearing hallmarks of tax planning. In Luxembourg, concerned intermediaries and taxpayers must report within the set deadlines.

Reviewed by Mickaël LOCManaging Director · Licensed accountant 10077274 · Updated August 6, 2026Profile LinkedIn

Legal basis

Directive (EU) 2018/822 (DAC6) amending Directive 2011/16/EU; Luxembourg transposition by the law of 25 March 2020. Filing via the ACD platform.

Key takeaway

DAC6 targets certain cross-border arrangements bearing hallmarks.
Reporting deadlines are short from the trigger event.
FSL prepares and files; sensitive legal analysis is coordinated.

Who this is for

Intermediaries (advisers, providers) and concerned taxpayers
Groups carrying out cross-border transactions
Holdings and investment structures

What we do

DAC6 hallmark analysis on your transactions
Preparation and filing of the return
Obligation and documentation tracking
Coordination of legal analysis with the lawyer

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Preparation checklist

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FAQ

Frequently asked questions

Who must report under DAC6?

In principle intermediaries (advisers, providers); failing that, the concerned taxpayer. We determine your obligation case by case.

What are the deadlines?

Reporting must occur within a short period (generally 30 days) from the trigger event. We track the deadlines for you.

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Reply within 24 business hours. NDA from first contact.