Expat Tax Services in Birmingham: Companies and Advisers Guide (2026)
AC
Acumon Chartered Accountants·14 min read
People moving to or from the UK can face tax questions involving residence, split-year treatment, foreign income and gains, double taxation, overseas assets, employment income and Self Assessment. Birmingham has local tax specialists alongside national firms with dedicated international private client and global mobility teams. Some focus primarily on individuals and families, while others work more extensively with employers managing internationally mobile employees. This guide provides a practical overview of expat tax services available to Birmingham clients rather than ranking the firms.
Acumon
Acumon is a UK firm of chartered accountants providing expat and international personal tax services to individuals moving to or from the UK, people working across borders and clients with overseas income or assets. Its private client tax team advises on the Statutory Residence Test, split-year treatment, foreign income and gains, the current FIG regime for qualifying new UK arrivals, double taxation issues, capital gains and Self Assessment reporting. The firm also handles HMRC correspondence where international tax positions require explanation or further review. The service is available to clients across the UK, including Birmingham, using remote document exchange and digital communication.
The firm works with organisations ranging from growing owner-managed businesses and charities through to larger corporate groups and regulated entities. Audit engagements are delivered in accordance with International Standards on Auditing (UK) and supported by a structured risk-based audit methodology.
Acumon holds a Public Interest Entity (PIE) audit licence, allowing the firm to audit listed companies and other entities subject to enhanced regulatory oversight in the United Kingdom. PIE audits are subject to additional regulatory supervision and quality requirements.
In addition to its UK audit registration, Acumon also holds recognised auditor status in Jersey and the Isle of Man. These authorisations enable the firm to support international corporate groups where entities are located across multiple jurisdictions.
International group structures frequently involve a combination of UK operating companies and overseas entities. Coordinating accounting, tax and audit work across these structures requires familiarity with cross-border financial reporting, taxation and compliance requirements.
For expat tax clients, Acumon’s wider private client, international tax, payroll and HMRC investigation capabilities mean residence questions can be considered alongside tax returns, employment income, foreign income, capital gains and other UK reporting requirements.
Expat Tax Capabilities
Acumon provides expat tax services across a wide range of organisational structures and sectors.
These include:
UK limited companies and corporate groups
Public Interest Entities (PIEs) and regulated organisations
offshore holding companies and investment vehicles
Expat tax engagements are typically led by senior tax professionals with direct involvement throughout the engagement.
Regulatory Licences and Registrations
Acumon holds several audit registrations that enable it to support organisations operating across multiple jurisdictions.
These include:
UK statutory audit registration
Public Interest Entity (PIE) audit licence
Jersey audit licence
Isle of Man audit licence
These registrations allow the firm to provide audit services to groups that include entities in both the UK and key international financial centres.
Core Services
Acumon provides a range of services that support financial reporting and governance.
These include:
statutory external audit
group and subsidiary audits
Public Interest Entity (PIE) audits
charity and not-for-profit audit
audit of international group structures
internal audit and governance reviews
risk management and compliance support
Audit work is often delivered alongside discussions with management and boards regarding financial reporting processes and governance frameworks.
Many organisations initially encounter statutory audit requirements as they grow and exceed the audit exemption thresholds set out in the Companies Act.
Acumon works with businesses that are:
approaching their first statutory audit
preparing for external investment
expanding into international markets
operating within corporate group structures
Early engagement with an audit firm can help ensure that financial reporting systems and documentation are aligned with statutory audit requirements.
Address: 1-2 Craven Road, Ealing, London, W5 2UA, UK
Vialto Partners
Vialto Partners is a specialist global mobility firm supporting employers and internationally mobile individuals with cross-border tax, immigration and workforce compliance. Its tax work covers employees on international assignments, expatriate tax obligations, personal income tax compliance and the tax consequences of working across multiple jurisdictions.
The firm has a dedicated Birmingham office and UK global mobility tax specialists working with internationally mobile employees and corporate mobility programmes. Its services also extend to business travel, remote working, rewards and compensation, making Vialto particularly relevant where expat tax forms part of a wider international employment arrangement.
Key Facts
Ideal for: Internationally mobile employees and employers managing overseas assignments
Core services: Expatriate tax, global mobility tax, personal tax compliance and cross-border workforce support
Service focus: International assignments and employee mobility
EY provides Global Mobility Tax services for organisations and individuals dealing with international assignments and cross-border working arrangements. Its mobility specialists advise on international tax matters affecting employees moving into the UK as well as UK employees assigned overseas, alongside the wider tax and compliance consequences of international mobility.
The firm has a dedicated Global Mobility Tax presence serving Birmingham, with specialist roles covering inbound expatriates, UK outbound assignees and complex global tax projects. This makes EY particularly relevant to multinational employers, internationally mobile executives and individuals whose relocation is connected with an employer-sponsored assignment.
Key Facts
Ideal for: Internationally mobile executives and multinational employers
Core services: Expatriate tax, international assignment tax, global mobility and cross-border compliance
Service focus: Inbound and outbound employee mobility
Contact Information:
Website: www.ey.com
Facebook: www.facebook.com/EY
LinkedIn: www.linkedin.com/company/ernstandyoung
Address: One Colmore Square, Birmingham, B4 6HQ
Phone: +44 121 535 2000
Tax Accountant
Tax Accountant is a Birmingham-headquartered tax practice supporting individuals whose circumstances involve more than one country. For clients moving to or from the UK, the firm reviews UK residence, split-year treatment, foreign income, UK workdays, accommodation and the resulting tax filing position.
The practice also handles international tax matters alongside Self Assessment, capital gains tax and HMRC compliance work. It can therefore suit expats who need practical help establishing their UK tax position and completing the reporting that follows from foreign income, a relocation or a change in residence status.
Key Facts
Ideal for: Individuals moving into or out of the UK
Core services: UK residence reviews, split-year treatment, foreign income and Self Assessment
Service focus: Personal international tax and UK reporting
Feltons is a Birmingham firm of chartered accountants providing personal tax advice to individuals with UK and overseas tax considerations. Its guidance on the Statutory Residence Test covers the rules used to establish whether an individual is UK resident, together with the potential relevance of double tax treaties once residence status has been determined.
The firm also advises Birmingham clients on the tax treatment of foreign income and gains under the rules applying from April 2025. Its published guidance addresses the Foreign Income and Gains regime for qualifying new UK residents, making Feltons particularly relevant to people arriving in the UK who need to understand how overseas income and gains may be taxed.
Key Facts
Ideal for: New UK residents and individuals with overseas income or residence questions
Core services: Statutory Residence Test, foreign income and gains, personal tax and HMRC support
Service focus: Residence-based UK taxation and international personal tax issues
Address: 8 Sovereign Court, 8 Graham Street, Birmingham, West Midlands, B1 3JR
Phone: 0121 236 1810
Seventy Six Chartered Accountants
Seventy Six Chartered Accountants is a Birmingham-based ICAEW-regulated practice whose private client service covers people with foreign income, overseas assets and residence questions alongside more general personal tax work. Its advisers handle complex Self Assessment returns, capital gains tax, inheritance tax, trusts and interactions with HMRC.
The firm is particularly relevant where an international tax position is connected with wider personal or family wealth rather than an employer-run expatriate programme. Residence and domicile questions are specifically included within its private client work, and its in-house investigation team can become involved if HMRC challenges a return or tax position.
Key Facts
Ideal for: Individuals with foreign income, overseas assets or complex residence questions
Core services: Personal tax compliance, residence advice, CGT, IHT, trusts and HMRC enquiries
Service model: Private client tax with investigation expertise in the same practice
Contact Information:
Website: 76charteredaccountants.co.uk
Address: 55 Colmore Row, Birmingham, B3 2AA
Phone: 07455 310863
Dains
Dains is an accountancy and advisory firm providing non-resident and international tax advice to individuals whose income, assets or personal circumstances span more than one country. Its tax specialists advise on residency status, treaty benefits, double taxation, reporting obligations and the tax consequences of working, investing or relocating abroad.
The firm’s head office is in Birmingham, and its wider private client services include Self Assessment, capital gains tax, property tax, trusts, estates and inheritance tax. This allows international tax questions to be considered alongside other UK personal tax and reporting requirements.
Key Facts
Ideal for: Individuals moving abroad or dealing with income and assets across multiple jurisdictions
Core services: Non-resident tax, international tax, residency, treaty advice, Self Assessment and double taxation
Service focus: Cross-border personal tax and UK reporting
Forvis Mazars combines international private client tax with global mobility services. Its international private client team advises on personal tax compliance, tax residence, cross-border planning, expatriate tax, double taxation, foreign income and the Foreign Income and Gains regime introduced after the end of the former non-dom system.
The Birmingham office works with private individuals as well as businesses, and the local private client team includes tax specialists based in the city. Forvis Mazars can therefore cover both personal relocation questions and situations involving wider wealth, overseas property, trusts or multiple jurisdictions.
Key Facts
Ideal for: Individuals and families with multi-jurisdictional tax affairs
Core services: Expatriate tax, residence advice, personal tax compliance, FIG advice and international tax planning
International scope: Private client specialists supported by an international network
Bishop Fleming’s international tax practice advises both businesses and individuals whose affairs cross national borders. For individuals, its published services include tax advice for foreign nationals, emigration planning, offshore investments, the Statutory Residence Test and other international personal tax matters. The team also works on double taxation and tax issues affecting mobile employees.
Its Birmingham office provides tax and advisory services from Colmore Row, while the wider international team can coordinate work through the Kreston Global network. The service is suitable for individuals who need personal residence advice as well as businesses dealing with international employees or overseas expansion.
Key Facts
Ideal for: Individuals relocating internationally and businesses with mobile employees
Core services: International personal tax, residence, double taxation, global mobility and offshore tax
S&W Group’s private client tax practice supports high-net-worth and internationally mobile individuals with UK and overseas tax compliance, planning and dispute resolution. Its international tax planning work covers people coming to the UK, returning after time abroad or leaving the country, including advice on the Foreign Income and Gains regime and transitional rules.
The firm’s Birmingham office provides services to private clients, including people with international connections, while S&W’s wider International Private Client Tax team handles residence planning, overseas structures, offshore assets and multi-jurisdictional family affairs.
Key Facts
Ideal for: Internationally mobile HNW individuals, families and entrepreneurs
Core services: International personal tax, residence planning, compliance, FIG advice and HMRC disputes
Private client focus: International assets and complex family wealth structures
RSM’s Global Employer Services team provides expatriate and global mobility support for organisations managing people across borders. Its work includes international tax compliance, assignment management, tax returns, payroll-related reporting, social security and support for business travellers and remote workers.
RSM also has a substantial Birmingham tax practice. Its Birmingham office is home to the firm’s Head of Private Client Services, while the wider tax team includes specialists in expatriate taxation. This allows the firm to address employer-side global mobility requirements while also covering personal tax issues affecting individual assignees.
Key Facts
Ideal for: Businesses with international assignees and employees working across borders
Core services: Expat tax, global mobility, international tax compliance, payroll and social security
Service model: Employer-focused mobility support with private client tax capability
Grant Thornton’s Global Mobility practice focuses on businesses and the employees they move internationally. Services include home and host-country tax briefings, tax compliance, shadow and modified payroll, residency and social security planning, short-term business traveller support, remote working advice and cross-border pension taxation.
The firm’s Employer Solutions model is delivered through regional teams, and Grant Thornton maintains a Birmingham office on Colmore Row. It can be particularly relevant where expat tax is part of a structured company assignment rather than a standalone personal relocation.
Key Facts
Ideal for: Employers running international assignment or mobility programmes
Core services: Global mobility tax, tax compliance, payroll, social security and business traveller support
Additional capability: US and UK private client support for internationally mobile executives
MHA includes global mobility within its international tax offering, with services aimed at businesses and individuals dealing with cross-border employment. Its global mobility specialists advise on international assignments, tax and social security considerations, business travellers and the obligations that can arise when employees work in more than one country.
The firm’s Birmingham office provides tax services to businesses and individuals, while its international work is supported by the Baker Tilly International network. MHA can therefore suit employers that need mobility advice coordinated with broader international tax, payroll and accounting requirements.
Key Facts
Ideal for: Businesses employing internationally mobile staff
Core services: Global mobility, international tax, assignment planning and cross-border compliance
International reach: Baker Tilly International network
KPMG’s Global Mobility Services practice is built around organisations managing international workforces. Its tax specialists help employers and mobile employees manage personal tax, social security and related compliance, alongside business traveller tracking, payroll reporting and mobility programme management.
KPMG has a large Birmingham office with tax specialists serving the Midlands. The combination is more suited to structured corporate mobility programmes than routine individual Self Assessment work, particularly where employers need to coordinate tax and payroll requirements across several countries.
Key Facts
Ideal for: Larger businesses with established or complex international workforces
Core services: Mobility tax, personal tax compliance, social security, payroll and business traveller support
Mobility focus: Employer programmes and internationally mobile employees
Contact Information:
Website: kpmg.com
Twitter: x.com/kpmguk
LinkedIn: www.linkedin.com/company/kpmg-uk
Facebook: www.facebook.com/KPMG
Address: One Snowhill, Snowhill Queensway, Birmingham, B4 6GH
Phone: +44 (0)121 232 3000
Deloitte
Deloitte’s Mobility Tax practice supports temporary, permanent, mobile and remote employee arrangements. Its published services include individual tax return preparation for mobile employees, tax equalisation calculations, income and social tax planning, business traveller compliance and pre-travel assessments.
The Birmingham office is part of Deloitte’s Midlands practice and also hosts mobility-focused events covering international tax and social security developments. Deloitte is therefore primarily relevant to employers and executives dealing with complex international assignments, rather than individuals looking only for a straightforward annual UK tax return.
Key Facts
Ideal for: Multinational employers and employees on international assignments
Core services: Mobility tax, individual tax returns, tax equalisation, social tax planning and traveller compliance
Service scope: Tax, payroll and wider mobility support
Contact Information:
Website: www.deloitte.com
Facebook: www.facebook.com/deloitteuk
Twitter: x.com/deloitteuk
LinkedIn: www.linkedin.com/company/deloitte
Address: Four Brindleyplace, Birmingham, B1 2HZ
Phone: +44 (0)121 632 6000
PKF Smith Cooper
PKF Smith Cooper is a Midlands accountancy and advisory firm with a Birmingham office and established private client and employment tax teams. Its published private client work includes reviewing the UK residence position of individuals moving to the UK and advising on the resulting personal tax consequences. The firm also provides tax support to domestic and international private clients.
The firm’s Birmingham office also includes employment tax specialists, while its wider tax practice supports both businesses and private clients. Its employment tax work covers employer compliance, benefits and expenses, employment status and HMRC enquiries, complementing the firm’s private client advice where cross-border circumstances also affect employment or payroll matters.
Key Facts
Ideal for: Midlands private clients and employers with emerging cross-border tax requirements
Core services: Private client tax, residence reviews, personal tax and employment tax
International connection: Member of the PKF International network
Contact Information:
Website: www.pkfsmithcooper.com
Facebook: www.facebook.com/PKFsmithcooper
LinkedIn: www.linkedin.com/company/pkfsmithcooper
Instagram: www.instagram.com/pkfsmithcooper
Address: 2 Cornwall Street, Birmingham, B3 2DX
Phone: 0121 236 6789
WLH Tax
WLH Tax is different from the general expat tax firms in this guide because it focuses exclusively on tax investigations and disputes. Its Birmingham office can assist when HMRC challenges an individual’s residence position or where offshore income, assets or historic reporting create a potential disclosure or investigation issue.
The firm offers residence and domicile reviews, offshore tax investigation support and voluntary disclosure work, including cases where a taxpayer needs to establish whether income or gains should have been reported to HMRC. It is therefore most relevant to expats with an existing compliance problem rather than someone seeking routine annual tax return preparation.
Address: Irving House, 47 Frederick Street, Birmingham, B1 3HN
Phone: +44 (0)121 803 3800
Conclusion
Expat tax services in Birmingham vary significantly depending on whether the client is an individual managing a personal move or an employer responsible for internationally mobile staff. Private client specialists tend to focus on residence, foreign income, double taxation, offshore assets and Self Assessment, while global mobility teams add payroll, social security, business traveller and international assignment support.
There is no single firm that suits every situation. The appropriate choice depends on the countries involved, the complexity of the individual’s assets and income, whether an employer is managing the move and whether the requirement is routine compliance, advance planning or help with an existing HMRC issue.
AC
Written by the Acumon team
Acumon is an ICAEW-registered firm of chartered accountants and registered auditors
based in London, with offices in Pitstone, Aylesbury and Bournemouth. Need advice on
anything covered here? Talk to us.
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