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Business Risk Services
Our Business Risk Services team deliver practical and pragmatic solutions that support clients in growing and protecting the inherent value of their businesses.
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Corporate Finance and Deal Advisory
We offer a dedicated team of experienced individuals with a focus on successfully executing transactions for corporates and financial institutions. We offer an…
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Economic Advisory
Our all-island Economics Advisory team combines expertise in economics and business with a wealth of experience across the public and private sectors.
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Forensic Accounting
We have a different way of doing business by delivering real insight through a combination of technical rigour, commercial experience and intuitive judgment. We take…
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People and Change Consulting
The Grant Thornton People & Change Consulting practice works with clients on these issues as well as on all aspects of how they attract, retain, engage develop, deploy and…
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Restructuring
We work with a wide variety of clients and stakeholders such as high street banks, private equity funds, directors, government agencies and creditors to implement…
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Technology Consulting
Motivating and assisting our clients to pursue, maintain and secure the benefits of digital solutions is at the core of our Digital Transformation teams' agenda and goals. We…

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Audit and Assurance FRS 102 Periodic Review Series – Other changesOn 27 March 2024, the Financial Reporting Council issued amendments to FRS 100 – 105 (known as GAAP, or Generally Accepted Accounting Practice), a suite of accounting standards applicable in the UK and Ireland. These are used by an estimated 3.4 million businesses in preparing their financial statements.
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Audit and Assurance ID Verification: Economic Crime & Corporate Transparency Act 2023Companies House is introducing mandatory identity verification requirements for Directors and People with Significant Control (PSCs), as the next step towards full implementation of the Economic Crime and Corporate Transparency Act 2023.
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Audit and Assurance FRS 102 Periodic Review Series – Accounting for LeasesOn 27 March 2024, the Financial Reporting Council issued amendments to FRS 100 – 105 (known as GAAP, or Generally Accepted Accounting Practice), a suite of accounting standards applicable in the UK and Ireland. These are used by an estimated 3.4 million businesses in preparing their financial statements.
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Article Changes to company size thresholds in the UKOn 10 December 2025 the UK Government laid The Companies (Accounts and Reports) (Amendment and Transitional Provision) Regulations 2024, which will take effect on 6 April 2025.
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Corporate and International Tax
Northern Ireland businesses face further challenges as they operate in the only part of the UK that has a land border with a country offering a lower tax rate.
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Employer Solutions
Our team specialises in remuneration and incentive planning and works closely with employers, shareholders and employees to ensure that business strategies are…
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Entrepreneur and Private Client Taxes
Our team of experienced advisors are on hand to guide you through any decision or transaction ranging from the establishment of new business ventures, to realising…
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Global Mobility Services
Grant Thornton Ireland offer a different approach to managing global mobility. We have brought together specialists from our tax, global payroll, people and…
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Outsourced Payroll
Our outsourced service provides valued service to over 150 separate PAYE schemes. These ranging from 1 to 1000 employees, working for micro, SME and global…
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Tax Disputes and Investigations
Our Tax Disputes and Investigation team is made up of tax experts and former HMRC investigators who have years of experience in dealing with a variety of tax…
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VAT and Indirect Taxes
At Grant Thornton (NI) LLP, our team helps Northern Ireland businesses manage their UK and global indirect tax risks which, as transactional taxes, can quickly…

In response to the tariffs announced by US President Donald Trump, Aidan Lyons, Director at leading business advisory firm Grant Thornton Northern Ireland, said:
There is no silver bullet for Northern Ireland businesses in how they can navigate the challenges posed by President Trump’s tariffs, but it is crucial that they are agile, strategic, and proactive in managing risk within an increasingly uncertain trade environment.
More than ever, companies must stay informed about the evolving trade landscape, assess the potential impact on their supply chains, and explore ways to mitigate disruption. Understanding the origin of their goods is vital for businesses, as this will determine which tariffs may apply on goods imported into the US and may provide a competitive advantage for NI goods which are subject to a 10% tariff rather than a 20% tariff for EU goods. NI firms must also ensure they are fully cognisant of Windsor Framework implications in relation to any reciprocal EU tariffs on US imports.
There are a number of critical factors businesses can concentrate on in the new environment including: an opportunity to explore mergers and acquisitions as a strategic option, how to achieve supply chain stability, seeking access to new markets, or strengthening their competitive position. Strategic partnerships may also support greater resilience in the face of shifting trade dynamics.
As challenging as they may be, these tariffs are now a reality and must be managed. Taking advice, staying informed and being prepared to adapt are positive initial steps that companies can take to mitigate risk and remain competitive on the global stage.
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