The 2021 Family Law Index is out now Find out more


Frank Hirth




Tax & Trust Accountants

Tax & Trust Advisers


London, United Kingdom

Advice type

Cross-border tax

Estate planning

Tax planning

Tax, wills & trusts

US-UK tax

Client types



Geographical focus




United States


Sector focus


Business and Consumer Services

Wealth Management & Private Banking


Sarah Farrow


With over 20 years’ experience in private client tax, Sarah Farrow heads up Frank Hirth’s UK tax team, helping non-doms structure their tax affairs in the most efficient way possible – after ‘understanding clients’ priorities and family dynamics’ first.

‘I try to keep the planning and advice I provide as simple as possible,’ she says. ‘The more complex the structuring the more likely something will be misunderstood, and this can lead to expensive tax mistakes.’

Frank Hirth has been specialising in tax advice for those with a US-nexus for over 40 years, having helped Americans working in the oil industry with their structuring in the 1970s. UK tax for non-doms has since become more complex, and today the firm operates across London, New York and New Zealand. ‘We are a big player in the international private client space, but small enough that client service is still at the heart of everything we do,’ she says.

Her clients range from entertainers to private equity professionals. She has extensive experience in advising very wealthy multi-national families, entrepreneurs and highly sophisticated investors from private equity and hedge fund backgrounds on structuring their worldwide affairs efficiently.

She references a ‘noticeable increase’ in clients deciding to move to the UK or move back to the UK, an area which she has been increasingly helping clients in recent years. She recalls a Middle Eastern client who approached her for help with some underreporting of their UK tax – a situation which had been going on for years, due to miscommunication between the client’s bankers and their former tax advisers. ‘The numbers were very large, and it took three months just to calculate the tax due,’ recalls Farrow. ‘We agreed on the amount with HMRC without them raising any queries, which is unusual.’ She remarks that the client successfully saved £350,000 as a result.

The accountant trained with KPMG, where she became involved in advising UK-based wealthy families, providing income, capital gains and inheritance tax advice to individual family members and their UK trusts. She later moved to the Channel Islands, where she advised on UK tax issues for offshore trustees, UK resident, non-UK domiciliaries and non-UK resident individuals with assets or structures in the UK. She is an Associate of the Chartered Institute of Taxation and is a member of the Society of Trust and Estate Practitioners (TEP). Sarah is also a qualified Chartered Tax Adviser (CTA).

Rank: Recommended

Recommended 2020, Tax & Trust Accountants


Share on