Helm US Tax

Helm Tax Team

Key contact

Jean-Marie Mettraux

International Tax Coordinator

Helm Tax Team

Key contact

Matthew Ledvina

US & International Tax Advisor

Helm Tax Team

Key contact

Sarah-Jane
Raya

Senior Tax Relationship Manager

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Jean-Marie coordinates tax returns and compliance issues for our private and fiduciary clients. That means managing all aspects of tax documentation and navigating clients through the complex web of compliance required by local partners.

Jean-Marie can actively manage and coordinate U.S. and multi-jurisdictional tax preparation, either with our own team of associated professionals or with a client’s current partners.Jean-Marie has been based in Zurich since 2006, forming his own US and international tax compliance consulting firm before helping to establish Helm Advisors. Originally from the French part of Switzerland, he also served as director of a Zurich-based US tax accounting firm and has expertise in trust and cross-border tax services. Jean-Marie, who holds a master’s in Political Science, previously worked for the Claims Resolution Tribunal in the restitution of Holocaust-era assets.

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Matthew’s focus is on providing tax, strategy, and structuring advice to international families who have US citizens or US tax resident connections. Matthew also advises clients who are planning on moving to the US, planning on leaving the US, or who have US investments (eg US real estate, US private equity).

Matthew has lived in France and Switzerland for over twenty years, consequently, he has accumulated extensive knowledge of European tax and immigration issues.

This knowledge allows him to provide a holistic/ pan-European strategy to his clients.

He also regularly advises on how families can use funds, trusts, foundations, and insurance structures to optimize their tax situations.

Clients consider Matthew to be extremely practical, commercial and yet strategic. Matthew is able to simplify complex tax, succession, and structuring issues into manageable and understandable solutions for clients which means that clients understand a strategy which is advocated and ultimately implemented.

Matthew is originally from the US, and attended Baylor University, Vanderbilt University and New York University for his undergraduate and legal education.

Along with other colleagues at Helm, he has founded a firm that assembles similarly minded and highly skilled advisers focused on US tax and compliance, UK tax and compliance, trusts, life and captive insurance planning, CRS/FATCA compliance, and art as an asset.

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Sarah-Jane Raya is Helm’s Senior Relationship Tax Manager, where she focuses on guiding clients through the intricacies of US tax compliance. She assists with the preparation and delivery of individual, trust, and other informational tax filings, ensuring that each client receives thorough, timely, and well-explained service. Her work supports both US-based individuals and international families with US tax exposure.
 
Fluent in English and a native French speaker, Sarah-Jane works closely with Helm’s client base, helping bridge cross-border complexities with clarity and care. She has a particular interest in the US reporting of foreign trusts, entities, and pensions, and frequently collaborates with colleagues on disclosure and compliance strategies.
 
Sarah-Jane holds a Master’s Degree in Service Management and Engineering from the University of Applied Sciences and Arts Western Switzerland (HES-SO Master) in Lausanne. Her career spans client-facing roles in the IT and financial sectors, and she is valued for her attention to detail, positive demeanor, and problem-solving mindset. She also has working knowledge of German.

Helm Tax Team

Key contact

Jean-Marie Mettraux

International Tax Coordinator

Jean-Marie coordinates tax returns and compliance issues for our private and fiduciary clients. That means managing all aspects of tax documentation and navigating clients through the complex web of compliance required by local partners.

Jean-Marie can actively manage and coordinate U.S. and multi-jurisdictional tax preparation, either with our own team of associated professionals or with a client’s current partners.Jean-Marie has been based in Zurich since 2006, forming his own US and international tax compliance consulting firm before helping to establish Helm Advisors. Originally from the French part of Switzerland, he also served as director of a Zurich-based US tax accounting firm and has expertise in trust and cross-border tax services. Jean-Marie, who holds a master’s in Political Science, previously worked for the Claims Resolution Tribunal in the restitution of Holocaust-era assets.

Download vCard

Helm Tax Team

Key contact

Matthew Ledvina

US & International Tax Advisor

Matthew’s focus is on providing tax, strategy, and structuring advice to international families who have US citizens or US tax resident connections. Matthew also advises clients who are planning on moving to the US, planning on leaving the US, or who have US investments (eg US real estate, US private equity).

Matthew has lived in France and Switzerland for over twenty years, consequently, he has accumulated extensive knowledge of European tax and immigration issues.

This knowledge allows him to provide a holistic/ pan-European strategy to his clients.

He also regularly advises on how families can use funds, trusts, foundations, and insurance structures to optimize their tax situations.

Clients consider Matthew to be extremely practical, commercial and yet strategic. Matthew is able to simplify complex tax, succession, and structuring issues into manageable and understandable solutions for clients which means that clients understand a strategy which is advocated and ultimately implemented.

Matthew is originally from the US, and attended Baylor University, Vanderbilt University and New York University for his undergraduate and legal education.

Along with other colleagues at Helm, he has founded a firm that assembles similarly minded and highly skilled advisers focused on US tax and compliance, UK tax and compliance, trusts, life and captive insurance planning, CRS/FATCA compliance, and art as an asset.

Download vCard

Helm Tax Team

Key contact

Sarah-Jane Raya

Senior Tax Relationship Manager

Sarah-Jane Raya is Helm’s Senior Relationship Tax Manager, where she focuses on guiding clients through the intricacies of US tax compliance. She assists with the preparation and delivery of individual, trust, and other informational tax filings, ensuring that each client receives thorough, timely, and well-explained service. Her work supports both US-based individuals and international families with US tax exposure.
 
Fluent in English and a native French speaker, Sarah-Jane works closely with Helm’s client base, helping bridge cross-border complexities with clarity and care. She has a particular interest in the US reporting of foreign trusts, entities, and pensions, and frequently collaborates with colleagues on disclosure and compliance strategies.
 
Sarah-Jane holds a Master’s Degree in Service Management and Engineering from the University of Applied Sciences and Arts Western Switzerland (HES-SO Master) in Lausanne. Her career spans client-facing roles in the IT and financial sectors, and she is valued for her attention to detail, positive demeanor, and problem-solving mindset. She also has working knowledge of German.

Download vCard

Meet the rest of the Helm US Tax Team

Operations Manager

Trust and Estate Practitioner (TEP)

US Tax Accountant

US Tax Accountant

US Tax Advisor

CRS/FATCA & Regulatory Advisor

US Tax Advisor

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