Sarah Cormack

Partner | London

Sarah is a partner in our private client and tax team.

She advises on tax, trusts and estate planning, both onshore and offshore, for high net worth individuals with a focus on complex offshore structures. Sarah has particular expertise in advising on the establishment of private trust company structures and related fiduciary and governance issues, together with all aspects relating to the family office. She also advises clients on the UK tax implications of becoming resident in the UK and assists in ensuring that a client’s asset holding structures are appropriate for a relocation to the UK.

She advises clients from around the world and has a significant Russian practice.

Sarah also advises on trust and will drafting and advises trustees on their duties and powers.

Sarah’s interest in structuring for effective family governance and her experience of working with clients to determine the shape and structure of their wealth led to her leading Withers’ involvement in the research piece ‘The Meaning of Wealth’.

Secretary Karin Ringler

Track record





Advising an ultra-high net worth Asian family on the design and implementation of a structure the core objectives of which were segregation of asset class through rationalisation of holding structures, protection and effective family governance.

Advising a long term UK resident European family on the reorganisation of their trust structures in the light of potentially penal changes to their home tax code. Private trust companies and trusts were converted into limited liability partnerships with the general partner mimicking the control and governance mechanisms previously used in the private trust company.

Advising a UK resident non domiciliary on establishing residence in both Switzerland and Monaco with a view to ceasing UK tax residence and ensuring that the client is securely out of scope of taxation in his ‘home’ jurisdiction through the use off available Double Tax Treaties.

England and Wales, 1997

‘In the pursuit of transparency - Trusts and disclosure: The PSC Regime’, Sanne Connect - September 2016

‘The Lawyer Family Office and Private Client Summit’, Monaco - May 2011

‘Globalisation: Innovative Fiduciary Structures and Trust Alternatives’, Society of Trust and Estate Practitioners Conference, Bermuda - April 2009

Society of Trust and Estate Practitioners

‘Tax Planning for Non-Domiciliaries’, IBC Conference, London - May 2016

‘Cross Border Wealth Planning for Divorce’, IIR Conference, London - January 2016

‘Structuring to Avoid Family Disputes’, Society of Trust and Estate Practitioners Conference - September 2014

Me in a minute

Estate and tax planning is uniquely challenging and endlessly fascinating

Aged 15 my careers adviser told me that the right career for me was dentistry. Given my inclination to queasiness, I begged to differ and resolved that a career in law might be a more suitable path.

A stint at a magic circle firm in the mid-1990s, working on privatisations, led me to conclude that life as a corporate lawyer was not for me. For a start, I seemed to be spending more time photocopying than giving legal advice!

It was with great relief that I stumbled upon the private client world and made my home at Withers in 2004.

Advising individuals in respect of estate and tax planning is uniquely challenging and endlessly fascinating. The combination of ‘hard’ law, the human element and the privilege of meeting and advising inspirational and successful individuals on a daily basis makes for a truly satisfying career. The need for creativity and innovation in shaping my advice to meet a client’s specific needs and circumstances means that no two days are the same, and certainly, no two client solutions are the same either.



  • English







20 Old Bailey,



View Office

Sarah Cormack is ‘extremely professional with a first-class ability to communicate complex issues in a clear and concise way’.

Legal 500 UK, 2017

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