Practical, proactive tax solutions for every stage of business

In today’s complex tax landscape, businesses and individuals face growing scrutiny from tax authorities. At Grant Thornton, we provide expert-led advice and hands-on support to help you meet your obligations efficiently and make confident decisions. Our tax professionals combine deep technical expertise with commercial insight to develop tax strategies aligned to your goals.

Whether you need guidance on cross-border issues, international expansion, or local compliance, our team is here to ensure your tax affairs are managed efficiently and ethically.

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Our solutions

Company tax

Our experienced corporate tax advisors work closely with your business to ensure full compliance and optimal efficiency. By understanding your commercial operations, we identify opportunities to manage liabilities, reduce risk, and strengthen your financial position through tailored tax planning and advice.

Indirect tax advisory and compliance

Transactional taxes such as VAT and customs can quickly become major financial exposures. Our Indirect Tax team helps you manage risk, ensure compliance across jurisdictions, and identify opportunities to streamline processes—protecting cash flow while maintaining transparency with tax authorities.

Isle of Man taxation

Specialist Isle of Man tax advisors helping individuals and businesses maximise benefits from the island’s competitive and transparent tax system.

Private client

Our Private Client team supports you through every stage of your personal financial journey. From residency and domicile planning to succession and wealth transfer, we help you minimise the impact of taxes such as income, capital gains and inheritance tax, ensuring your wealth is protected for future generations.

Global mobility

Our integrated approach brings together specialists from tax, payroll and people advisory to simplify global mobility management. We help you navigate expatriate and international tax obligations while ensuring compliance and supporting your people through relocation.

International tax

Operating internationally introduces complex tax considerations. We collaborate across our global network to design efficient, compliant structures that align with your operational footprint and strategic priorities—delivering confidence and clarity across borders.

Outsourced payroll

Streamline payroll processes with our fully managed payroll solution. We ensure accuracy, compliance and confidentiality, allowing your team to focus on core business operations while we manage the detail.

Company tax

Our experienced corporate tax advisors work closely with your business to ensure full compliance and optimal efficiency. By understanding your commercial operations, we identify opportunities to manage liabilities, reduce risk, and strengthen your financial position through tailored tax planning and advice.

Global mobility

Our integrated approach brings together specialists from tax, payroll and people advisory to simplify global mobility management. We help you navigate expatriate and international tax obligations while ensuring compliance and supporting your people through relocation.

Indirect tax advisory and compliance

Transactional taxes such as VAT and customs can quickly become major financial exposures. Our Indirect Tax team helps you manage risk, ensure compliance across jurisdictions, and identify opportunities to streamline processes—protecting cash flow while maintaining transparency with tax authorities.

International tax

Operating internationally introduces complex tax considerations. We collaborate across our global network to design efficient, compliant structures that align with your operational footprint and strategic priorities—delivering confidence and clarity across borders.

Isle of Man taxation

Specialist Isle of Man tax advisors helping individuals and businesses maximise benefits from the island’s competitive and transparent tax system.

Outsourced payroll

Streamline payroll processes with our fully managed payroll solution. We ensure accuracy, compliance and confidentiality, allowing your team to focus on core business operations while we manage the detail.

Private client

Our Private Client team supports you through every stage of your personal financial journey. From residency and domicile planning to succession and wealth transfer, we help you minimise the impact of taxes such as income, capital gains and inheritance tax, ensuring your wealth is protected for future generations.

Gemma Johnson
Get in touch
Gemma Johnson
Director - Tax
Contact Gemma Johnson Learn more about Gemma Johnson
Gemma Johnson
Contact Gemma Johnson Learn more about Gemma Johnson
Gemma Johnson
Director - Tax
Gemma Johnson
+44 28 9587 1144
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Why Grant Thornton

Our partner-led team combines local expertise with global insight to deliver results that make a tangible difference.

With Grant Thornton, our clients receive:

  • Tailored advice: Solutions aligned to your specific commercial and personal objectives.
  • Integrated expertise: Access to over 200 tax professionals across Ireland and the Isle of Man.
  • Global reach: Seamless support across 130+ countries through our international network.
  • Proactive guidance: Early identification of risks and opportunities to improve efficiency.

Ready to simplify your tax position? Contact our team today to discuss how we can support you.

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    Contact our tax experts

    Gemma Johnson
    Gemma Johnson
    Director - Tax
    View full profile
    Peter Legge
    Peter Legge
    Partner - Tax
    View full profile