Employment tax is rarely just a payroll issue. The way an organisation manages employee pay, benefits, expenses, incentives and reporting can affect compliance, costs and the wider relationship between the business and its workforce.
The UK has a broad mix of employment tax providers, from large professional services firms to specialist tax advisers and accountancy practices. Their work may cover areas such as PAYE, National Insurance, employee benefits, off-payroll working, salary sacrifice, international mobility and HMRC enquiries.
This guide highlights a selection of companies providing employment tax services across the UK. The aim is to give organisations practical context on who these providers are, the types of clients they work with and the employment tax matters they are equipped to handle.
Acumon
Acumon is a UK firm of chartered accountants providing employment tax services to companies, charities, international corporate groups, and regulated organisations.
The firm works with organisations ranging from growing owner-managed businesses and charities through to larger corporate groups with complex payroll, benefits, and workforce arrangements. Employment tax work is supported by a structured approach to PAYE, National Insurance contributions, employee benefits, expenses, and HMRC reporting obligations.
Acumon also holds a Public Interest Entity (PIE) audit licence and audit registrations in the United Kingdom and several international financial centres. This wider regulatory and financial reporting experience supports employment tax assignments for listed companies, regulated entities, and international groups operating across multiple jurisdictions.
In addition to its UK practice, Acumon holds audit licences in the Cayman Islands, British Virgin Islands (BVI), Jersey, and Isle of Man. These registrations give the firm experience working with international corporate groups where employees, directors, payroll functions, and legal entities are located in different jurisdictions.
International group structures frequently combine UK operating companies with overseas parent companies, subsidiaries, holding entities, and internationally mobile employees. Managing employment tax across these structures requires clear payroll reporting, accurate treatment of employee benefits, and coordination between finance, HR, payroll, and tax teams.
Acumon works with finance teams, HR departments, payroll teams, and boards to address employment tax obligations while strengthening payroll controls, internal reporting, governance arrangements, and supporting documentation.
Employment Tax Capabilities:
Acumon provides employment tax services across a wide range of organisational structures and workforce arrangements.
These include:
- UK limited companies and corporate groups
- Public Interest Entities (PIEs) and regulated organisations
- UK subsidiaries of international groups
- charities and not-for-profit organisations
- owner-managed businesses with growing workforces
- offshore holding companies and investment vehicles
Employment tax assignments are led by senior professionals who remain directly involved throughout the work.
Regulatory Licences and Registrations:
Acumon holds several professional registrations that support its work with 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 reflect the firm's experience with regulated organisations and corporate groups that include entities in the UK and key international financial centres.
Core Services:
Acumon provides a range of employment tax services covering payroll reporting, employee remuneration, workforce arrangements, and HMRC compliance.
These include:
- PAYE and National Insurance contribution reviews
- employee benefits and benefits-in-kind reporting
- P11D and PAYE Settlement Agreement support
- employment status and off-payroll working reviews
- termination payment and redundancy tax advice
- salary sacrifice and employee reward arrangements
- internationally mobile employee tax support
- HMRC employment tax enquiries and disclosures
- payroll process and control reviews
Employment tax work is delivered alongside discussions with finance, HR, payroll teams, and boards regarding reporting processes, internal controls, and workforce governance.
Organisations encounter new employment tax responsibilities as their workforce expands, remuneration structures develop, or operations extend into new jurisdictions.
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 review of employment tax arrangements helps ensure that payroll records, employee classifications, benefits reporting, and supporting documentation remain aligned with UK tax requirements.
Contact Information:
- Website: acumon.com
- Phone: 020 8567 3451
- E-mail: mail@acumon.com
- Address: 1-2 Craven Road, Ealing, London, W5 2UA, UK
HaysMac
HaysMac is a UK accountancy and advisory firm with a dedicated employment tax team. They work with employers dealing with changing working arrangements, employee reward structures and increasingly detailed reporting obligations. Their specialists cover both routine employer tax matters and less straightforward questions involving remote workers, overseas employees and employment status.
Their work includes reviewing PAYE and National Insurance processes, checking the treatment of benefits and expenses, and assessing workers under IR35 and the off-payroll rules. They also advise on salary sacrifice and pension salary exchange arrangements, HMRC disclosures, employer tax reliefs and disputes with the tax authority. The team takes a detail-led approach, with an emphasis on processes, governance and the practical effect of tax changes on an organisation.
Key Highlights:
- Dedicated employment tax specialists
- Advice covering UK and international working arrangements
- Employment Tax Calendar for employer deadlines
- Support with HMRC enquiries and disclosures
- Experience across several specialist sectors
Services:
- PAYE and National Insurance reviews
- Remote and international working compliance
- IR35 and off-payroll worker assessments
- Benefits and expenses advice
- Salary sacrifice and pension salary exchange
- Employment status process reviews
- HMRC dispute resolution
- Employer tax relief reviews
Contact Information:
- Website: haysmac.com
- Phone: 020 7969 5500
- E-mail: contact@haysmac.com
- Address: 10 Queen Street Place, London EC4R 1AG
- LinkedIn: www.linkedin.com/company/haysmac
- Instagram: www.instagram.com/lifeat_haysmac
Moore Kingston Smith
Moore Kingston Smith are a multidisciplinary advisory, tax and audit firm working with organisations across a broad mix of sectors. Their structure brings together business tax, employer services, payroll, HR consultancy and global mobility teams, allowing employment matters to be considered alongside the wider financial and operational position of a business.
They work locally and internationally through the Moore Global network. Employment-related work sits within a broader service offering that also covers outsourced accounting, business advisory, legal services and private client tax. Their client base includes organisations in areas such as charities, education, financial services, healthcare, hospitality, media, professional services, real estate, retail, sport and technology.
Key Highlights:
- Multidisciplinary tax, audit and advisory firm
- UK and international capabilities
- Employer services and payroll expertise
- Global mobility and HR consultancy teams
- Experience across commercial and nonprofit sectors
Services:
- Employment tax
- Employer services
- Payroll
- Global mobility
- HR consultancy
- Business and corporate tax
- Outsourced accounting
- International advisory services
Contact Information:
- Website: mooreks.co.uk
- Phone: +44 (0)20 4582 1000
- Address: 6th Floor, 9 Appold Street, London, EC2A 2AP
- Twitter: x.com/MooreKSLLP
- LinkedIn: www.linkedin.com/company/moore-kingston-smith
S&W
S&W are an accounting, tax and advisory firm previously operating under the Smith & Williamson and Evelyn Partners names. They work with businesses, owners and individuals, combining tax advice with accounting, assurance, consulting, outsourcing and transaction services. Their employer solutions work forms part of the wider business tax practice.
Their employment tax team deals with the tax obligations and risks attached to employing and rewarding people. This work is supported by related capabilities in payroll, business outsourcing, international expansion, regulatory consulting and people-focused tax matters. The firm also works with companies going through growth, structural change, transactions and overseas expansion, where employment arrangements often need to be reviewed alongside broader business decisions.
Key Highlights:
- Integrated tax and advisory structure
- Employer solutions within the business tax team
- Payroll and outsourcing capabilities
- UK and international business support
- Experience with growing and established organisations
Services:
- Employment taxes
- Employer solutions
- Business tax
- Payroll support
- Business outsourcing
- International expansion advice
- Accounting advisory
- Regulatory consulting
Contact Information:
- Website: www.swgroup.com
- Phone: +44 117 233 2200
- Address: 45 Gresham Street, London EC2V 7BG
- Twitter: x.com/S_W_Group
- LinkedIn: www.linkedin.com/company/swgroupuk
AAB
AAB is an accountancy and business advisory group working with owner-managed businesses, international groups and private clients. Their work is organised around coordinated teams, with tax, audit, advisory, corporate finance, payroll and people specialists brought together where a client needs input from more than one discipline.
Their UK employment tax work sits within the payroll and employment practice. The wider team also covers corporate tax, people advisory and international business matters, giving employers access to connected advice on workforce costs, tax obligations and payroll processes. Their model is based around one accountable contact supported by specialists from across the group.
Key Highlights:
- Payroll and employment practice
- Coordinated support across tax and people matters
- Work with owner-managed and international businesses
- Presence across the UK, Ireland and the USA
- Access to corporate tax and business advisory teams
Services:
- UK employment taxes
- Payroll
- Payroll and employment support
- Corporate tax
- People advisory
- Business advisory
- International business support
- Private client tax
Contact Information:
- Website: aab.uk
- Phone: +44 (0)131 357 6666
- Address: 81 George St, Edinburgh, EH2 3ES
- Facebook: www.facebook.com/AABLLP
- Twitter: x.com/AABGroup_
- LinkedIn: www.linkedin.com/company/aab-accountants
- Instagram: www.instagram.com/_aabgroup
PwC UK
PwC UK is part of an international professional services network providing tax, audit, consulting and transaction-related services. Their employment tax and payroll work sits within the human resource services practice, where tax specialists work alongside teams focused on workforce strategy, data and organisational change.
They advise employers on the tax and payroll issues that arise from managing people, pay and workplace reporting. Their broader UK practice also covers gender pay gap reporting, tax compliance, technology and workforce analysis. This allows employment tax questions to be handled as part of a larger review of payroll operations, employee data and regulatory obligations.
Key Highlights:
- Dedicated employment tax and payroll practice
- Employment services within the wider HR team
- Access to tax, technology and workforce specialists
- UK practice connected to an international network
- Experience with reporting and employee data matters
Services:
- Employment tax
- Payroll advisory
- Human resource services
- Workforce tax
- Gender pay gap reporting
- Tax compliance
- Employee data analysis
- International workforce support
Contact Information:
- Website: www.pwc.co.uk
- Phone: +44 (0)14 1355 4000
- Address: 120 Bothwell Street, Glasgow, G2 7JS
- Instagram: www.instagram.com/pwc_uk
- Facebook: www.facebook.com/PwCUK
- LinkedIn: www.linkedin.com/company/pwc-uk
RSM UK
RSM UK is an audit, tax and consulting firm focused on middle-market organisations. They operate through offices across the UK and are part of the RSM International network, which gives their teams access to advisers in other jurisdictions when a client has employees, operations or expansion plans overseas.
Employment tax forms part of their broader tax and people advisory work. Their approach starts with understanding how an organisation operates before shaping the work around its structure and priorities. They also use digital tools and data-led analysis across their services, particularly where tax, payroll and workforce information needs to be reviewed across a large organisation.
Key Highlights:
- Focus on middle-market businesses
- Integrated audit, tax and consulting teams
- UK office network
- International support through the RSM network
- Data-led approach to advisory work
Services:
- Employment tax
- Tax advisory
- People advisory
- International tax support
- Business transformation
- Finance function support
- Risk and governance
- Legal services
Contact Information:
- Website: www.rsmuk.com
- Phone: +44 (0)161 830 4000
- Address: Landmark, St Peter's Square, 1 Oxford Street, Manchester, M1 4PB
- LinkedIn: www.linkedin.com/company/rsm-uk
- Instagram: www.instagram.com/rsm.uk
Deloitte UK
Deloitte UK is part of the Deloitte international network and provide services across tax, audit, assurance, consulting, legal and technology. Employment tax sits within their Global Employer Services practice, which brings together tax and workforce expertise for organisations managing employees in the UK and across multiple countries.
Their teams work on employment tax matters alongside broader questions involving mobility, workforce structures, reward and employer compliance. Deloitte also has separate human capital, legal, business process and technology practices, so work involving employee tax can be coordinated with payroll processes, organisational change and wider workforce programmes.
Key Highlights:
- Global Employer Services practice
- Employment tax and workforce expertise
- Access to tax, legal and human capital teams
- UK practice connected to an international network
- Support for domestic and cross-border employers
Services:
- Employment tax
- Global employer services
- Global mobility
- Workforce tax
- Human capital advisory
- Tax compliance
- Legal services
- Business process solutions
Contact Information:
- Website: www.deloitte.com
- Address: 1 New Street Square, London EC4A 3HQ, United Kingdom
- Phone: +44 020 7936 3000
- Facebook: www.facebook.com/deloitteuk
- Twitter: x.com/deloitteuk
- LinkedIn: www.linkedin.com/company/deloitte
Grant Thornton UK
Grant Thornton UK is an audit, tax and advisory firm working with organisations facing growth, change and increasingly complex commercial decisions. Their employment tax work sits within the wider Employer Solutions practice, alongside broader tax expertise and access to specialists across the firm’s international network.
They place senior advisers directly into client work and use technology to handle data-heavy processes while keeping judgement and interpretation with the team. Their employment tax specialists deal with employer obligations, workforce arrangements and the tax treatment of pay, benefits and other forms of employee reward.
Key Highlights:
- Employment tax team within Employer Solutions
- Senior-led advisory model
- Wider audit, tax and advisory capabilities
- Access to specialists across international markets
- Use of technology in tax and advisory work
Services:
- Employment tax
- Employer Solutions
- Workforce tax advice
- Tax compliance
- Employee reward tax
- Business tax
- International tax coordination
Contact Information:
- Website: www.grantthornton.co.uk
- Phone: +44 (0)11 7305 7600
- Address: 2 Glass Wharf, Bristol BS2 0EL
- LinkedIn: www.linkedin.com/company/grant-thornton-uk
- Instagram: www.instagram.com/gt_trainees
PKF Smith Cooper
PKF Smith Cooper is an accountancy and business advisory firm with offices across the Midlands and a wider presence through the PKF Global network. Their teams cover audit, accountancy, tax and advisory work, with employment tax handled as part of a broader specialist tax offering.
Their advisers work closely with clients to understand how the business operates before reviewing risks, obligations and practical next steps. The firm uses a partner-led model, with specialists from different departments brought into the work where employment tax overlaps with payroll, corporate tax or wider business planning.
Key Highlights:
- Specialist employment tax practice
- Partner-led working structure
- Offices across the Midlands
- Access to the PKF Global network
- Multidisciplinary accounting and advisory teams
Services:
- Employment tax
- Tax advisory
- Payroll-related tax advice
- Corporate tax
- Tax compliance
- Accounting services
- Business advisory
- International tax coordination
Contact Information:
- Website: www.pkfsmithcooper.com
- Phone: 01332 332021
- E-mail: derby@pkfsmithcooper.com
- Address: Prospect House, 1 Prospect Place, Millennium Way, Derby, DE24 8HG
- Facebook: www.facebook.com/PKFsmithcooper
- LinkedIn: www.linkedin.com/company/pkfsmithcooper
- Instagram: www.instagram.com/pkfsmithcooper
BDO UK
BDO UK is an accountancy and business advisory firm working with entrepreneurial, growing and mid-market organisations. Their service structure covers audit, tax, deals, consulting, risk and outsourcing, with employment matters handled through the Global Employer Services practice.
Their teams work across tax, payroll and internationally mobile workforces, often coordinating advice where employees are based in several jurisdictions. Employment tax is considered alongside reporting, reward, workforce movement and the systems used to manage employer obligations.
Key Highlights:
- Global Employer Services practice
- Focus on growing and mid-market businesses
- Integrated tax, advisory and outsourcing teams
- UK and international capabilities
- Experience with cross-border workforce matters
Services:
- Employment tax
- Global Employer Services
- Payroll tax
- Global mobility
- Employee reward tax
- Employer compliance
- International workforce advice
- Tax reporting
Contact Information:
- Website: www.bdo.co.uk
- Phone: 0161 817 7500
- Address: Eden Building, Irwell Street, Salford, Manchester, M3 5EN, United Kingdom
- LinkedIn: www.linkedin.com/company/bdo-llp
- Instagram: www.instagram.com/bdo_uk
Menzies
Menzies is an independent UK accountancy and business advisory practice with national coverage and international connections through the HLB network. They work with privately held companies, not-for-profit organisations and individuals, combining tax advice with audit, employer solutions and wider commercial support.
Their employment tax work sits within the Employer Solutions team and is delivered alongside payroll, employee benefits and other business tax services. Different specialists collaborate where a workforce issue affects several areas at once, including reward arrangements, reporting, international employment or wider operational planning.
Key Highlights:
- Independent UK accountancy and advisory practice
- Dedicated Employer Solutions team
- Sector-focused working structure
- National coverage across England and Wales
- International coordination through HLB
Services:
- Employment tax solutions
- Employer Solutions
- Payroll
- Employee benefits
- Tax advisory
- International employment matters
- Outsourced business services
- Corporate tax
Contact Information:
- Website: www.menzies.co.uk
- Phone: +44 (0)333 091 0411
- Address: The Colmore Building, 20 Colmore Circus Queensway, Birmingham B4 6AT
- LinkedIn: www.linkedin.com/company/menzies-llp
- Instagram: www.instagram.com/menzies_llp
KPMG
KPMG is a multidisciplinary professional services firm with tax, advisory, technology and business transformation capabilities. Their employment tax work is part of the Workforce Mobility and Employment Tax practice, where tax specialists work with organisations managing employees, reward arrangements and workforce changes.
Their approach combines technical tax knowledge with data, technology and wider organisational advice. Employment tax matters are handled alongside mobility, payroll, business restructuring and transactions where workforce obligations need to be reviewed across different locations or business units.
Key Highlights:
- Workforce Mobility and Employment Tax practice
- Multidisciplinary advisory structure
- Technology and data capabilities
- Experience with complex workforce arrangements
- International network of member firms
Services:
- Employment tax
- Workforce mobility
- Payroll tax
- Employee reward tax
- Workforce compliance
- Mobility programme advice
- Tax technology
- Transaction-related workforce tax
Contact Information:
- Website: kpmg.com
- Phone: +44 (0)161 246 4000
- Address: 1, St Peter's Square, Manchester M2 3AE, United Kingdom
- Twitter: x.com/kpmguk
- Facebook: www.facebook.com/KPMG
- LinkedIn: www.linkedin.com/company/kpmg-uk
Armstrong Watson
Armstrong Watson are an accountancy, advisory and financial planning firm operating across the North of England and Scotland. Their employment tax specialists sit within the wider tax advisory practice, working alongside accounting, payroll, compliance and outsourced finance teams.
They take a regional, relationship-based approach and spend time understanding how each business is structured before reviewing its employer tax position. Their advisers work with organisations at different stages of development, from early growth through to succession, restructuring and changes in workforce arrangements.
Key Highlights:
- Employment tax specialists within tax advisory
- Strong presence across Northern England and Scotland
- Access to accounting and outsourced finance teams
- Regional office network
- Member of the MSI Global Alliance
Services:
- Employment tax
- Tax advisory
- Payroll-related tax
- Employer compliance
- Accounting and audit
- Outsourced financial services
- Business advisory
- International coordination
Contact Information:
- Website: www.armstrongwatson.co.uk
- Phone: 0113 221 1300
- Address: 10 South Parade, Leeds, LS1 5QS
- Facebook: www.facebook.com/armstrongwatson
- Twitter: x.com/armstrongwatson
- LinkedIn: www.linkedin.com/company/armstrong-watson
- Instagram: www.instagram.com/armstrongwatsonllp
UNW
UNW is an independent accountancy and advisory firm based in the North East of England. Their employment tax specialists work closely with colleagues across the firm, bringing together tax, payroll and wider accounting expertise where a client’s workforce arrangements involve more than one area.
Their style is practical and collaborative, with advisers staying involved throughout the work rather than passing matters between disconnected teams. They focus on understanding the organisation first, then deal with the tax treatment, reporting requirements and processes attached to employees and workers.
Key Highlights:
- Dedicated employment taxes specialism
- Independent regional firm
- Collaborative work across departments
- Direct access to experienced advisers
- Practical and relationship-led approach
Services:
- Employment taxes
- Employer compliance
- Payroll tax
- Employee benefits tax
- Employment status advice
- Tax advisory
- Accounting services
- Cross-departmental business support
Contact Information:
- Website: unw.co.uk
- Phone: +44 (0)191 243 6000
- E-mail: enquiries@unw.co.uk
- Address: Citygate, St James’ Boulevard, Newcastle upon Tyne, NE1 4JE
- Twitter: x.com/UNWLLP
- LinkedIn: www.linkedin.com/company/unw-llp
Conclusion
The right provider will depend on how your organisation is structured, where your people work and which employment tax issues take up the most time internally. Some businesses need regular help with PAYE, benefits and expenses. Others are dealing with international employees, off-payroll workers, salary sacrifice arrangements or an HMRC review. The starting point is to be clear about the work you actually need, rather than choosing a firm simply because it has the broadest service list.
It is also worth looking at how each provider works. Ask who will manage the relationship, whether senior specialists stay involved and how the team handles matters that overlap with payroll, HR, legal or global mobility. Sector knowledge matters too, especially where pay structures or working arrangements are less straightforward.
This guide is designed to make that first comparison easier. It brings together firms with different structures, areas of expertise and ways of working, so organisations can narrow the field before speaking to providers directly. It is not a ranking, and there is no single right choice for every employer. The useful question is which team understands your workforce, communicates clearly and offers the level of support your organisation genuinely needs.