Create a unique client experience when providing innovative tax services

Marie-Sophie Hélier

EY Luxembourg Business Tax Services Partner

Tax professional for more than 15 years. Expertise on tax regulations. Passionate about dancing and ballet. Creativity is my mojo.

Areas of focus

Marie-Sophie is a Tax Partner leading the Banking and Insurance Sector Tax practice. 

She has more than 15 years of experience advising Luxembourg financial institutions and asset servicers on direct taxation as well as Luxembourg tax regulatory requirements with a prime focus on operational taxation (DACs/ FATCA/Qualified Intermediary regime) and tax fraud. Additionally, and is a regular speaker at various EY events/webcasts and external conferences. 

How Marie-Sophie is building a better working world

Marie-Sophie assisted many financial institutions implementing their tax compliance program combining a deep understanding of the institutions and offering innovative services.

Marie's latest thinking

How to keep pace with evolving tax legislation and its impact on business and operations

It is crucial for asset servicers to keep track of and adapt to tax regulations, which are evolving at a rapid pace globally and even more at the European level.

Luxembourg Tax Authority issues updated version of MDR guidance

The Luxembourg Tax Authority issued an updated version of the Mandatory Disclosure Regime (MDR) guidance on 30 June 2023

13 Jul 2023 Bart Van Droogenbroek +1

The 2023 Qualified Intermediary Agreement: broader scope of application and additional requirements

The 2023 Qualified Intermediary Agreement: broader scope of application and additional requirements

23 Jan 2023 Marie-Sophie Hélier +1

The CARF and amendments to the CRS: one step closer to global tax transparency

On 10 October 2022, the organisation for Economic Co-operation and Development (OECD) published the final rules and commentary of the crypto-asset Reporting Framework (CARF) as well as enhancements to the Common Reporting Standard (CRS).

16 Nov 2022 Patrice Fritsch +2

Why the Automatic Exchange of Information matters for your personal tax?

It is that time of the year again to start preparing for personal income tax returns. Luxembourg tax residents are taxable in Luxembourg on their worldwide income.

21 Mar 2022 Hélène Crepin +1
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