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About Frank Hirth

The firm was established in 1975, originally as Frank Hirth & Co - a firm of Chartered Accountants, and offered general accounting and tax services with a particular emphasis on US and UK tax compliance. It quickly became apparent that we were building an in-depth technical knowledge of the interaction between the US and UK tax jurisdictions and we used that knowledge to advise our clients through their complex tax issues.

Guided by a passion for building lasting relationships with our clients based on trust, understanding and technical excellence, the firm has flourished over the past 40 years. Our practice of putting clients at the heart of everything we do will always be one of our core values.

Frank Hirth PLC is currently listed as the 32nd largest Accountancy firm in the UK (2017 Accountancy Age Top 50+50 survey of the UK’s biggest accountancy firms) with a workforce of 220 dedicated people. We are a diverse community made up of people with a broad depth of technical knowledge, 45% of whom have been with us for five years or more. We have built an excellent working environment which provides professional development and opportunity. As testament to that, the very first employee of the firm is now our Chairman. In addition, a member of our first Entry Level Tax Assistants Scheme was recently appointed to our Board of Directors.

We provide our services to an ever increasing population of clients. Whether a private individual or multinational corporation, we will spend time getting to know you and learning about the intricacies of your world so that we can deal effectively with the challenges before you. Our integrated teams of highly trained professionals in London, New York and Wellington are committed to offering you their expertise and insight to guide you through the labyrinth of regulations across borders. We will work with you to examine the whole picture from personal circumstances to any relevant business relationships in order to properly identify any potential problems and ultimately provide you with a bespoke, meaningful and efficient solution.  

Tax has been our business for more than 40 years and clarity, transparency and friendliness has been the methodology in how we have conducted our business.

Our Services

Private Clients

Business Tax

Trust, Estate & Family




2017 eprivateclient Top Accountancy Firms

The Spear's 500

eprivateclient Top 35 Under 35

Citywealth Leaders List 2015

Accountancy Age Top 50 Firms 2015

Citywealth Power Women Awards 2016

Citywealth Magic Circle Awards 2015: Winner

Taxation Awards 2015: Winner

Citywealth Magic Circle Awards 2015

eprivateclient Top 25 Most Admired UK Companies 2015

eprivateclient Top 50 Most Influential 2015

Spear's 500

eprivateclient Top 35 Under 35 2014

eprivateclient Top 25 Accountancy Firms 2014

CityWealth Magic Circle Awards 2014: Winner

Taxation Awards

Charity Partner