International Tax Firms in Birmingham: Services and Companies Guide (2026)
AC
Acumon Chartered Accountants·13 min read
Businesses and individuals with interests across more than one country may need advice on international structuring, double taxation, transfer pricing, permanent establishments, global mobility, withholding taxes and overseas compliance. Birmingham has a mix of specialist tax consultancies, regional accountancy firms and international professional services networks covering these areas. This guide provides a practical overview of firms offering international tax services in Birmingham rather than ranking them.
Acumon
Acumon is a UK firm of chartered accountants and registered auditors providing international tax services to businesses, individuals and international groups across the UK, including Birmingham. Its International Tax service covers overseas businesses establishing UK operations, UK companies expanding abroad, permanent establishment risks, double taxation, withholding taxes, cross-border structuring and international tax compliance. The firm also advises internationally mobile individuals on UK residence, split-year treatment and the tax implications of foreign income and gains.
The wider tax practice covers corporation tax, double tax treaty advice, expatriate tax and related compliance matters. This allows international tax questions to be considered alongside UK accounting, reporting and compliance requirements, particularly where a client has subsidiaries, branches, shareholders or income in several jurisdictions.
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, and only a limited number of firms are authorised to undertake this type of work.
In addition to its UK audit registration, Acumon also holds audit licences in several international financial centres, including the Cayman Islands, British Virgin Islands (BVI), Jersey, and Isle of Man. These licences enable the firm to support international corporate groups where entities are located across multiple jurisdictions.
International group structures can combine UK operating companies with overseas subsidiaries, branches, holding companies and investment vehicles. Tax considerations may therefore need to be coordinated with financial reporting, group accounting, audit and governance requirements rather than handled as an isolated issue.
For international tax clients, Acumon’s wider tax, accounting and audit capabilities allow cross-border questions to be reviewed alongside UK reporting and compliance. The firm can advise on inbound and outbound expansion, double-tax relief, permanent establishments, intercompany arrangements, withholding taxes and the position of individuals moving into or out of the UK.
International Tax Capabilities
Acumon provides international 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
International 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
Cayman Islands audit licence
British Virgin Islands 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
Claritas Tax
Claritas Tax is a specialist tax consultancy with its original office in Birmingham and a dedicated Corporate and International Tax practice. Its Birmingham advisers cover international tax planning alongside corporate tax, transfer pricing, customs and overseas tax advice. The firm works on areas such as cross-border transactions, restructuring and the tax implications of businesses operating in more than one jurisdiction.
Its specialist model differs from a full-service accountancy practice because the emphasis is primarily on tax advisory work rather than routine bookkeeping or year-end accounting. That can be relevant to businesses that already have an accountant or finance team but need additional expertise for a particular international tax issue.
Key Facts
Ideal for: Privately owned businesses and groups needing specialist international tax advice
Core services: Corporate tax, international tax planning, transfer pricing, customs and overseas tax advice
International tax focus: Cross-border planning, transactions and transfer pricing
Contact Information:
Website: claritastax.co.uk
Address: Enterprise House, 115 Edmund Street, Birmingham, B3 2HJ
Phone: 0121 726 1717
Dains
Dains has its head office in Birmingham and a dedicated International Services practice for UK companies expanding overseas and foreign businesses establishing operations in the UK. Its international corporate tax work includes cross-border tax planning, double taxation, transfer pricing, international VAT and customs, alongside support with payroll and other requirements created by overseas expansion.
The firm works through AGN International when an assignment requires advisers in other jurisdictions. This model can suit businesses that want their UK adviser to coordinate tax and accounting requirements across several countries while retaining a Birmingham-based point of contact.
Key Facts
Ideal for: Businesses expanding overseas or overseas companies entering the UK
Core services: International corporate tax, transfer pricing, VAT, customs, payroll and audit
International tax focus: Cross-border planning, double taxation and international business expansion
S&W provides tax and accountancy services to businesses ranging from owner-managed companies to international corporates. The local business tax team includes advisers whose work specifically covers international tax planning, overseas projects, transactions and companies with international activities.
This gives Birmingham businesses access to international tax advice within a wider practice covering corporate tax, accounting, transactions and business advisory work. The firm can therefore be relevant where cross-border tax questions are connected with acquisitions, disposals, restructuring or the wider development of an international group.
Key Facts
Ideal for: Owner-managed businesses, larger private companies and international corporate groups
Core services: Business tax, international tax planning, transactions and accountancy
International tax focus: International expansion, transactions and corporate tax planning
MHA offers a dedicated International Tax service alongside its Birmingham audit, tax and advisory practice. Its published international capabilities cover global tax compliance, global mobility, cross-border M&A, international structuring and repatriation, transfer pricing, country-by-country reporting, Pillar 2, permanent establishment risks, withholding tax and indirect taxes.
International assignments can also draw on the Baker Tilly International network, allowing UK tax advice to be coordinated with local expertise in other jurisdictions.
Key Facts
Ideal for: Mid-market and multinational businesses with cross-border tax requirements
Core services: International tax, transfer pricing, global mobility, cross-border M&A and compliance
International tax focus: Structuring, permanent establishments, withholding tax and Pillar 2
Forvis Mazars operates from Three Chamberlain Square in Birmingham and provides international tax advice through its wider Global Tax Services practice. Its international services include global compliance, transfer pricing, global mobility and immigration, VAT and indirect taxes, corporate restructuring, Pillar 2 compliance and tax support for international transactions.
The firm’s international desks and global network can also support companies entering or leaving particular markets. These services can be coordinated with accounting, audit, transaction support and wider international expansion work.
Key Facts
Ideal for: Mid-sized and larger groups operating across multiple jurisdictions
Core services: Global tax, transfer pricing, mobility, indirect tax, transactions and Pillar 2
International tax focus: Multijurisdictional business structures and global compliance
Bishop Fleming has a Birmingham office on Colmore Row and a dedicated International Tax service covering both businesses and individuals. For companies, advice includes inbound and outbound investment, foreign branches and subsidiaries, transfer pricing, double taxation agreements, mobile employees, international e-commerce, funding structures and Pillar 2. Private client work includes residence and tax matters connected with moving between countries.
The Birmingham corporate tax team also has experience advising on international transactions, allowing cross-border issues to be considered alongside restructuring, M&A and other corporate tax matters.
Key Facts
Ideal for: Businesses and individuals with international tax exposure
Core services: International business tax, personal international tax, transfer pricing and corporate tax
International tax focus: Overseas expansion, inbound investment, double taxation and global mobility
Friend Partnership is a Birmingham accountancy firm with a specific service offering for international clients. It supports overseas companies entering the UK and internationally active businesses with areas such as company formation, corporation tax compliance, transfer pricing, VAT and customs, expatriate advice, payroll and personal tax compliance.
The practice may be particularly relevant to businesses looking for international tax support alongside routine accounting and compliance rather than a standalone tax consultancy. Its Birmingham office also provides wider corporate tax, audit and business advisory services.
Key Facts
Ideal for: Overseas-owned businesses and SMEs with international activities
Core services: International tax, transfer pricing, corporation tax, VAT, customs and payroll
International tax focus: UK market entry and ongoing cross-border compliance
PKF Smith Cooper has a Birmingham office and works with overseas-owned businesses establishing or operating UK subsidiaries. Its cross-border tax support covers initial structuring, corporation tax, withholding taxes, permanent establishment risks, intercompany arrangements and transfer pricing, with international capability extended through the PKF Global network.
The firm’s Birmingham tax advisory practice also works on national and international transactions, including acquisitions, disposals and corporate reorganisations. Its tax and transaction teams can therefore work together on cross-border acquisitions, disposals, reorganisations and UK market-entry projects.
Key Facts
Ideal for: Overseas groups with UK subsidiaries and Midlands businesses expanding internationally
Core services: Corporate tax, cross-border tax, transfer pricing, accounting and transactions
International tax focus: Inbound investment, overseas-owned subsidiaries and international transactions
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
RSM UK
RSM UK provides international corporate tax services covering both expansion into the UK and overseas growth by UK businesses. Its international team advises on global tax compliance, holding company structures, transfer pricing, global mobility, tax registrations, permanent establishments and worldwide compliance coordination. The firm also has specialist transfer pricing capabilities covering documentation, benchmarking, Country-by-Country reporting and operational implementation.
RSM’s Birmingham office also includes private client tax expertise for individuals with complex international affairs, adding a personal tax dimension to its corporate international offering.
Key Facts
Ideal for: International groups, expanding businesses and internationally mobile private clients
Core services: International corporate tax, transfer pricing, global mobility and private client tax
International tax focus: UK entry, overseas expansion and global compliance
Grant Thornton has a dedicated International Tax practice covering transfer pricing, global mobility, international indirect tax, cross-border reward structures and global compliance reporting. Its transfer pricing service includes policy design, documentation, benchmarking, Country-by-Country reporting, dispute resolution and support around international transactions.
The firm’s Birmingham tax team also includes private client specialists advising on international tax planning, residence, overseas trusts and worldwide tax authority matters. This means its Birmingham offering is relevant to both corporate groups and individuals with international interests.
Key Facts
Ideal for: Corporate groups, internationally mobile individuals and private clients
Core services: International tax, transfer pricing, global mobility and international indirect tax
International tax focus: Cross-border corporate and private client matters
KPMG’s practice forms part of its national tax and legal operation, with services for businesses expanding overseas, reorganising international operations or managing cross-border tax compliance. Its transfer pricing team advises on policy design, benchmarking, OECD documentation, operational transfer pricing, value chains, intercompany financing and dispute resolution.
The broader tax practice can combine these areas with corporate tax, transactions and international operating-model advice. This scale is particularly relevant to larger organisations with intercompany transactions or tax requirements across numerous jurisdictions.
Key Facts
Ideal for: Larger businesses and multinational corporate groups
Core services: International business tax, transfer pricing, corporate tax and tax governance
International tax focus: Global operating models, transfer pricing and overseas expansion
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
EY
EY has a substantial Birmingham practice and dedicated International Tax Services expertise in the city. Birmingham-based International Tax Partner Alex Christoforou advises UK and overseas groups with substantive cross-border operations, including work on international tax issues, OECD BEPS and international investment structures.
EY’s wider international tax capabilities can be combined with transaction, transfer pricing, mobility and other specialist services across its global network. Its international tax, transaction, transfer pricing and mobility teams can coordinate work involving multiple jurisdictions and complex cross-border structures.
Key Facts
Ideal for: Large international groups, investors and businesses with complex cross-border structures
Core services: International tax, transfer pricing, transactions and mobility
International tax focus: BEPS, investment structures and multinational tax planning
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
Cooper Parry
Cooper Parry provides a dedicated International Tax service for businesses and individuals with interests across different jurisdictions. Its advisers work with established multinational organisations, UK businesses beginning overseas expansion and overseas companies entering the UK. International tax services include transfer pricing, international structuring, double tax relief and advice on the tax implications of overseas expansion.
The firm also supports businesses with overseas tax compliance and permanent establishment considerations, while its expatriate tax specialists advise on employees and individuals moving between the UK and other countries. Cooper Parry can coordinate assignments with international advisers where local expertise is required outside the UK.
Key Facts
Ideal for: Growing businesses, international groups and companies entering or expanding outside the UK
Core services: International tax, transfer pricing, overseas expansion and expatriate tax
International tax focus: Cross-border structuring, double tax relief and international business expansion
Deloitte’s Birmingham office provides access to a national International Tax practice focused on inbound and outbound multinational tax matters. Services include international tax compliance, Pillar Two, finance and treasury tax, supply and value chain management, intellectual property, legal entity structuring, foreign tax credits, M&A tax structuring and tax controversy.
Its transfer pricing specialists also work on documentation, operational transfer pricing, value chains, intercompany pricing and transaction-related matters. Businesses with mobile employees can combine this with mobility tax, payroll and immigration support.
Key Facts
Ideal for: Multinational organisations with complex international tax functions
Core services: International tax, transfer pricing, Pillar Two, mobility and transaction tax
International tax focus: Multijurisdictional corporate structures and global tax management
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
PwC
PwC’s International Tax and Treasury practice advises organisations operating across borders on international tax strategy, compliance and the interaction between tax arrangements and wider corporate structures. Its international capabilities sit alongside transfer pricing, tax controversy and indirect tax services, allowing several aspects of a multinational group’s tax position to be coordinated through the same network.
Transfer pricing work includes policy design, documentation, worldwide coordination, advance pricing agreements and dispute resolution involving several tax authorities. PwC’s Birmingham office is its largest mainland regional office outside London and provides access to specialists across its tax and wider advisory practices.
Key Facts
Ideal for: Multinationals and larger organisations with substantial cross-border activity
Core services: International tax, treasury, transfer pricing, compliance and indirect tax
International tax focus: Worldwide tax coordination and complex multinational structures
Contact Information:
Website: www.pwc.co.uk
Facebook: www.facebook.com/PwCUK
LinkedIn: www.linkedin.com/company/pwc-uk
Instagram: www.instagram.com/pwc_uk
Address: One Chamberlain Square, Birmingham, B3 3AX
Phone: +44 (0)121 265 5000
Conclusion
International tax services in Birmingham range from specialist tax-only consultancies to regional accountancy practices and large global professional services firms. Some providers are particularly focused on privately owned and mid-market businesses, while others have the network and specialist teams required for transfer pricing, Pillar Two, multinational compliance, global mobility and complex international group structures.
The right fit depends on the nature of the cross-border activity. A company making its first overseas expansion may need practical advice on permanent establishments, entities and double taxation, while a multinational group may require coordinated transfer pricing, reporting and tax compliance across several countries. Individuals moving between jurisdictions can have a different set of priorities around residence, foreign income and personal tax reporting.
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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