This practical guide provides an overview of companies offering expat tax services in London, helping readers understand the different types of support available. Rather than ranking companies, this article presents a clear overview of their experience, service areas, and the clients they typically assist. The companies covered range from larger organisations with broad tax capabilities to specialists focused on specific expatriate and international tax situations. The goal is to give useful context about each company, its strengths, and the types of clients it may suit, helping readers make a more informed decision.
Acumon
Acumon is a UK firm of chartered accountants and tax advisers providing personal tax services to individuals, entrepreneurs, international clients, and businesses with UK tax obligations. The firm supports clients with personal taxation matters, including situations involving relocation, overseas income, and cross-border financial arrangements.
The firm works with individuals whose tax affairs may involve multiple jurisdictions, changing residency status, or income sources outside the United Kingdom. Expat tax engagements are supported through structured advice on UK tax responsibilities, reporting requirements, and communication with relevant authorities.
Acumon provides tax support for expatriates, non-UK residents, and internationally mobile individuals who need guidance on UK personal tax matters. This includes assistance with tax residence considerations, self assessment obligations, foreign income reporting, and matters connected with moving between countries.
International personal tax situations often involve additional considerations such as double taxation agreements, overseas assets, investment income, and changes in personal circumstances. Managing these areas requires an understanding of how UK tax rules apply to individuals with connections to more than one country.
Acumon works with clients across different stages of international mobility, including individuals arriving in the UK, UK residents moving overseas, and people maintaining financial interests across multiple jurisdictions. The firm helps clients understand their tax position and meet relevant compliance requirements.
The firm combines tax advisory knowledge with accounting expertise to support individuals who need practical assistance with personal tax planning, reporting, and ongoing compliance. Acumon works with clients to address their current tax obligations while considering their wider financial circumstances.
Expat Tax Capabilities
Acumon provides expat tax services for individuals with UK and international tax considerations.
These include:
- UK tax residence and domicile considerations
- Expatriate personal tax planning
- Foreign income and overseas asset reporting
- Self assessment tax return support
- Double taxation agreement guidance
- International individual tax compliance
Tax advice is tailored to each client’s circumstances, taking into account their location, income sources, and connections with different tax jurisdictions.
Regulatory Licences and Registrations
Acumon operates as a UK accountancy and tax advisory firm supporting individuals and organisations with professional accounting and tax services.
These include:
- UK chartered accountancy registration
- Professional tax advisory services
- Personal tax compliance support
- International tax advisory experience
- UK tax reporting assistance
- Support with HMRC-related matters
These professional capabilities allow Acumon to assist clients who require structured advice on UK tax obligations while living, working, or maintaining financial interests internationally.
Core Services
In addition to expat tax services, Acumon provides a range of personal tax and advisory services supporting individuals with complex financial circumstances.
These include:
- Expatriate tax advice
- Personal tax returns and self assessment
- UK tax residence planning
- Foreign income and gains reporting
- Capital gains tax advice
- International tax support
- Personal tax planning
Expatriates often require professional tax support when moving countries, changing residency status, or managing income from different locations.
Acumon works with individuals who are:
- relocating to the UK
- leaving the UK to live overseas
- managing overseas income sources
- holding assets in multiple countries
- reviewing their long-term tax position
Early tax advice can help individuals understand their reporting responsibilities and prepare for changes in their personal or international circumstances.
Contact Information
- Website: acumon.com
- Phone: 020 8567 3451
- Email: [email protected]
- Address: 1-2 Craven Road, Ealing, London, W5 2UA, UK
Relo Tax
Relo Tax is a London-based Chartered Tax Adviser company specialising in expatriate tax services. The company works with individuals who are moving to the UK, leaving the UK, or managing tax affairs with an international element. Its services focus on helping expatriates understand UK tax responsibilities connected with relocation, overseas income, and changing personal circumstances.
The company supports clients with UK tax implications of international moves, residency considerations, and ongoing filing requirements. Relo Tax focuses specifically on expatriate situations rather than general accounting services, making it relevant for individuals who need advice connected with living or working across borders.
Key Facts
- Ideal for: Individuals relocating internationally or managing expat tax matters
- Core services: Expat tax advice, UK tax support, relocation tax planning
- Specialization: Expatriate and international personal taxation
- Industries: Private individuals and internationally mobile professionals
- Location: London, UK
- Notable strength: Dedicated focus on expatriate tax situations
Contact Information
- Website: www.relo.tax
- Email: [email protected]
- Address: Lonsdale Gate, Lonsdale Gardens, Tunbridge Wells, Kent, TN1 1NU.
- LinkedIn: www.linkedin.com/company/relo-tax
- Facebook: www.facebook.com/relo.expat.tax
Jaffe & Co
Jaffe & Co provides US and UK tax services for expatriates, particularly Americans living in the UK and individuals with tax obligations connected with both jurisdictions. The company supports US citizens abroad, dual citizens, and internationally mobile taxpayers with matters including US tax returns, UK tax advice, FATCA, FBAR requirements, and cross-border reporting.
The company also advises on UK personal tax matters involving foreign income, overseas investments, rental income, non-domicile considerations, and US-UK tax treaty issues. Jaffe & Co focuses on situations where clients need coordination between two tax systems and support with international compliance requirements.
Key Facts
- Ideal for: US citizens, dual citizens, and US-UK expatriates
- Core services: US tax returns, UK tax advice, FATCA, FBAR, cross-border compliance
- Specialization: US-UK expatriate taxation
- Industries: Private clients and internationally mobile individuals
- Location: London, UK
- Notable strength: Experience with US and UK tax coordination
Contact Information
- Website: www.jaffeandco.com
- Phone: +44 (0)20 8346 5237
- Address: 147 Arlington Road, London, NW1 7ET, United Kingdom
Horizon
Horizon company providing international tax and accounting services for UK expatriates, non-residents, and individuals with cross-border financial circumstances. The company focuses on personal tax matters connected with relocation, overseas income, residency planning, and ongoing UK tax compliance. Its services include support for people moving abroad, returning to the UK, or managing tax responsibilities while living internationally.
The company works with clients on areas such as UK tax returns, Statutory Residence Test considerations, split-year treatment, double taxation matters, and tax planning connected with international moves. Horizon also supports individuals with more complex situations, including overseas income, UK property interests, and international personal tax requirements.
Key Facts
- Ideal for: UK expatriates, non-residents, and internationally mobile individuals
- Core services: Expat tax advice, residency planning, personal tax returns, international tax support
- Specialization: Cross-border UK personal taxation
- Industries: Private clients, entrepreneurs, international individuals
- Location: London, UK
- Notable strength: Focus on expat and non-resident tax matters with Chartered Tax Adviser support
Contact Information
- Website: horizonukts.com
- Phone: +447402741922
- Email: [email protected]
- LinkedIn: www.linkedin.com/company/horizon-uk-tax-solutions-limited
Expatriate Tax London
Expatriate Tax London focuses on tax services for individuals whose circumstances involve international relocation, overseas residence, or UK tax obligations while living abroad. The company provides support for expatriates, non-residents, and people with cross-border personal tax questions. Its services are aimed at individuals who need assistance understanding their position under UK tax rules when their personal or financial situation extends beyond one country.
The company’s work covers areas connected with expatriate taxation, including UK tax compliance, residence-related matters, and international income considerations. It is relevant for clients who need specialist personal tax guidance rather than general accounting support.
Key Facts
- Ideal for: Expatriates and non-residents with UK tax obligations
- Core services: Expat tax advice, UK tax compliance, residence support
- Specialization: International personal taxation
- Industries: Private individuals and expatriates
- Location: London, UK
- Notable strength: Dedicated focus on expatriate tax matters
Contact Information
- Website: expatriatetax.london
- Phone: +44(0) 203 282 1649
- Email: [email protected]
- Address: 16 Upper Woburn Place, London, WC1H 0AF, United Kingdom
Expatriate Tax Consultancy
Expatriate Tax Consultancy provides specialist tax advice for expatriates and internationally mobile individuals. The company focuses on situations where employees, professionals, or private clients have tax obligations connected with working or living across different countries. Its services are relevant for individuals and organisations dealing with the additional requirements created by international assignments and relocation.
ETCS supports clients with expatriate taxation, international assignment considerations, and personal tax matters linked with overseas mobility. The company’s specialist approach is focused on helping clients manage tax responsibilities that arise when their location, employment, or financial affairs involve multiple jurisdictions.
Key Facts
- Ideal for: Expatriates, international employees, and globally mobile professionals
- Core services: Expat tax consulting, international assignment tax support, personal taxation
- Specialization: Expatriate and mobility taxation
- Industries: International businesses and private clients
- Location: UK
- Notable strength: Specialist focus on expatriate tax situations
Contact Information
- Website: etcsltd.com
- Phone: 020 8882 6439
- Email: [email protected]
- Address: 40 Crown Ln, London N14 5ER, UK
US UK Accountants
US UK Accountants provides cross-border tax and accounting services for Americans living in the UK, dual citizens, and individuals with financial connections between the United States and the United Kingdom. The company focuses on situations where clients need support with both US and UK tax obligations, including US expat tax returns, FBAR, FATCA, UK Self Assessment, and international tax planning.
The company works with expatriates, families, business owners, and internationally connected individuals who need coordination between two tax systems. Its services cover areas where US and UK rules overlap, helping clients manage filing responsibilities, treaty considerations, and cross-border tax matters through one advisory team.
Key Facts
- Ideal for: US citizens in the UK, dual citizens, and US-UK connected individuals
- Core services: US tax returns, UK Self Assessment, FBAR, FATCA, cross-border tax planning
- Specialization: US-UK expatriate taxation
- Industries: Private clients, families, founders, international businesses
- Location: London, UK
- Notable strength: Focus on coordinating US and UK tax responsibilities
Contact Information
- Website: www.usukaccountants.com
- Phone: +44 333 090 4129
- Email: [email protected]
- Address: 70 Queen Road, London E17 8QP, United Kingdom
- LinkedIn: www.linkedin.com/company/usukaccountants
- Instagram: www.instagram.com/usukaccountants
Arcos Tax
Arcos Tax provides US and UK cross-border tax advice for expatriates, international individuals, and families managing tax obligations between different countries. The company focuses particularly on US citizens living in the UK, UK residents moving to the US, and other internationally mobile clients who need guidance on personal tax matters.
The company supports clients with US and UK tax returns, international tax planning, residency considerations, property and capital gains tax matters, and issues connected with avoiding double taxation. Arcos also advises individuals before relocation, helping them understand potential UK tax implications before moving countries.
Its services are focused on situations where taxpayers need advice across two jurisdictions rather than standard domestic tax support. This makes Arcos relevant for expatriates dealing with complex personal tax arrangements involving the UK and other countries.
Key Facts
- Ideal for: US-UK expatriates, internationally mobile individuals, and families
- Core services: US-UK tax advice, tax returns, international tax planning, residency advice
- Specialization: Cross-border US and UK taxation
- Industries: Private clients, families, international individuals
- Location: London, UK
- Notable strength: Dual US and UK tax focus
Contact Information
- Website: arcostax.com
- Phone: +44 (0) 2045 830 706
- Email: [email protected]
- Address: The Stanley Building, 7 Pancras Square, London, N1C 4AG, United Kingdom
- LinkedIn: www.linkedin.com/company/arcos-tax-advisory
Citrine International
Citrine International is a boutique international tax compliance company providing UK and US tax advisory services for individuals and families with cross-border financial circumstances. The company supports globally mobile clients, including people relocating between the UK and US, managing international investments, or dealing with tax responsibilities in more than one jurisdiction.
The company focuses on specialist international personal taxation, including tax compliance, advisory support, and planning for clients whose circumstances involve multiple countries. Citrine International works with individuals who may need assistance during relocation, business growth, family changes, or other situations that affect their international tax position.
Its London presence supports clients seeking UK-US tax expertise while maintaining access to broader international advisory capabilities. The company’s approach is focused on tailored tax support rather than general accounting services.
Key Facts
- Ideal for: International individuals, families, and UK-US connected clients
- Core services: UK-US tax advice, tax compliance, cross-border planning
- Specialization: International personal taxation
- Industries: Private clients, entrepreneurs, globally mobile families
- Location: London, UK
- Notable strength: Boutique approach to international tax matters
Contact Information
- Website: citrinetax.com
- Phone: +44 (0)1865 410 510
- Email: [email protected]
- Address: Florence House, 29 Grove Street, Oxford, OX2 7JT
SMCO Chartered
SMCO Chartered provides personal and international tax advisory services for individuals and businesses with complex tax requirements. The company supports clients with UK taxation matters, including situations involving international mobility, overseas income, and changing personal circumstances.
Its services are relevant for expatriates and internationally connected individuals who require professional tax advice alongside ongoing compliance support. SMCO works with clients on personal tax planning, advisory matters, and tax issues that may arise when financial affairs extend across different jurisdictions.
The company’s chartered tax advisory background makes it suitable for individuals who need structured guidance on UK tax responsibilities and wider planning considerations.
Key Facts
- Ideal for: Individuals with complex personal tax situations
- Core services: Personal tax advice, international tax planning, tax compliance
- Specialization: Chartered tax advisory services
- Industries: Private clients and businesses
- Location: London, UK
- Notable strength: Focus on specialist tax advisory support
Contact Information
- Website: www.smcotax.com
- Email: [email protected]
- Address: 85 Great Portland Street, First Floor, London, W1W 7LT
- Facebook: www.facebook.com/UK-Tax-Services-and-Tax-Advisors-105762371759035
- Twitter: x.com/smcotax
Conclusion
Expat tax services in London cover different types of international tax situations, from UK residency and overseas income matters to specialist US-UK reporting requirements. The companies included in this guide vary in their focus, with some concentrating on expatriate taxation and others providing broader international tax support.
This guide highlights a selection of expat tax services companies rather than ranking them. Readers can compare companies based on their personal circumstances, country connections, reporting requirements, and the level of specialist support they need.