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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…


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With all the challenges presented by both Brexit and the coronavirus pandemic, the UK Budget announced back in Spring 2021, has received little press attention.
The headlines have focused on measures aimed to help ease the financial loss of lockdowns, such as the furlough scheme, and reduction of VAT rates for the hospitality sector.
As we all have been expecting, Treasury are ultimately faced with an issue of balancing the books, and will need to recoup the grant monies used to prop up the economy.
One of the most significant measures taken was the increase in the main rule of corporation tax from 19% to 25%, effective from 1 April 2023.
NI businesses have been particularly tested over the last couple of years, not only from the coronavirus pandemic but also with the need to adapt to the implementation of the NI Protocol.
Now faced with a corporation tax rate which is double that of their counterparts across the border in the Republic of Ireland, the competition for cost-effective business is going to become more challenging than ever.
Looking at developments around the world, the OECD have agreed and implemented a deal with more than 130 countries to set a global minimum corporation tax rate of 15%. This deal includes the EU and most notably, the Republic of Ireland.
Ireland has long been an attractive area for large multinational companies and foreign direct investment due to the low corporation tax rates of 12.5%.
Whilst the Irish government were initially hesitant to agree to an increase of corporation tax and potentially risk losing their appeal to businesses, they sought assurances to ensure that only businesses with global revenues over €750 million would be subject to the new higher rate of 15%.
The European Commission are aiming to deliver a directive this year to implement the OECD rules.
This will leave Northern Ireland in a unique position having to compete with a massive differential in corporation tax rate from across the border.
Corporation tax was pushed on the agenda for years, with legislation put in place back in 2015 to devolve corporation tax to Stormont.
There are many political scuffles as to why this legislation has not implemented a reduction in the local corporation tax rate, particularly surrounding the required reduction of the block grant funding received from Westminster.
With the impending increase to a 25% rate of corporation tax and lows as much as 12.5% in the Republic of Ireland, the need to revisit the special Northern Ireland corporation tax rate has been considered by The Independent Fiscal Commission NI in their Interim 2021 report.
As businesses recover and seek to consolidate post-pandemic, higher corporation tax rates will not be met with a warm welcome.
Any tax paid is a sunk cost which impacts the shareholder value and accordingly businesses should review cash flow projections, corporation tax forecasts and consider all the available mitigations such as the efficient use of unutilised losses (perhaps arising during the pandemic), tax effective investment to maximise capital allowances, and much more.