Scroll down for more information

Corporate Tax

Corporate Tax covers a broad and complex area of tax legislation, so we provide a suitably broad and comprehensively experienced team to support your business with pragmatic, commercial advice. 

Contact Malachy McLernon


All businesses are under constant pressure to maintain or improve their market position and cope with a growing burden of regulation in all areas. We are dedicated to making your tax position clearer, make compliance easier and provide valuable and practical tax planning advice to help you secure and develop your success. 

Businesses of all sizes and types, and across a wide range of sectors, benefit from our comprehensive corporate tax compliance and advisory service. We have exceptionally knowledgeable tax teams distributed across our offices, ready to support you with their wealth of experience and expertise. We can manage your global tax exposure with a coordinated response that saves you having to seek advice from separate advisors. 


Managing your tax compliance has become increasingly complex and more time-consuming. With increased reporting obligations, ever changing legislation and harsher penalties for non-compliance, it’s now even more important to file timely and accurate tax returns, and make the most of your tax planning opportunities. 

Our experience of supporting a wide range of businesses, from start-ups to large groups and quoted companies, means we can take care of all your tax compliance tasks, leaving you more time to focus on running your business. 

We can help with: 

  • Preparing and submitting corporate tax computations and returns. 
  • Preparing your quarterly tax calculations. 
  • Dealing with HM Revenue & Customs correspondence. 
  • Preparing all relevant claims to HM Revenue & Customs. 
  • Proactively identifying tax planning opportunities, to minimise your liabilities and exploit incentives, so you can save money. 
  • In-house staff secondment. 


Corporation tax can be a substantial liability, so it’s important to explore all opportunities to minimise your company’s tax exposure. Effective tax planning is key to your success, so our tax team will use its extensive knowledge to identify where you can make savings.  

Our comprehensive corporate tax advice will not only help minimise and manage your group tax exposure, but also give you more time to focus on your core activities. We’ll review your objectives and strategies, and devise plans that will serve you well now and in the future. We can also assess whether overall group restructuring would be advantageous and how best to achieve it. Our advice will include: 

  • Extraction of profits. 
  • Group planning. 
  • Maximising claims to Capital Allowances. 
  • Minimising exposure to Capital Gains. 
  • Planning for the optimum utilisation of losses. 
  • Advice on the effect of legislative changes. 


We partner with many owner-managed businesses to help them grow from start-up to maturity. Whether your business is well-established or newly-formed, our extensive range of services and commercial understanding will give you peace of mind 

Our experienced team advises many owner-managed businesses on: 

  • The most beneficial vehicle for the business, whether it’s sole trader, partnership, LLP or company, and the potential of different combinations.  
  • Tax efficient withdrawal of profits through salaries, dividends, pension planning, company loans and share options. 
  • Succession planning. 
  • Exit planning. 


More companies are looking to move or expand their operations abroad to improve their market position and/or to take advantage of foreign tax rates and/or regulations. Before making that decision, it’s vital to understanding the impact it will have on your business operations. Our international tax team will ensure your business is structured for optimum tax efficiency both in the UK and globally. 

We’ll advise you on: 

  • The corporation tax regime in any country. 
  • The most tax efficient form for entering a country, in terms of legal presence and your place in a group structure. 
  • How corporate tax will impact profits earned overseas. 
  • The impact of UK controlled foreign company (CFC) legislation. 
  • Issues relating to the corporate residence of overseas companies. 
  • The impact of withholding taxes on financing and repatriation of income and profits. 
  • Double tax relief planning. 
  • Management of foreign corporate tax liabilities. 
  • Complying with corporate tax obligations in foreign countries. 


Where goods, services, finances or intangibles are supplied between companies under common control, transfer pricing legislation requires the arm’s length value for such transactions to be used in working out those companies’ corporation tax liabilities, both in the UK and overseas. 

Our transfer pricing experts will ensure your business is compliant with UK and overseas transfer pricing legislation. We’ll advice you on: 

  • Any transfer pricing adjustments required. 
  • The prescribed methods for pricing on an arm’s length basis. 
  • Interaction between the UK and overseas transfer pricing rules. 
  • Complying with the documentation requirements of the UK and overseas transfer pricing legislation. 
  • Thin capitalisation and debt cap legislation. 


There may be many reasons why it would be an advantage to restructure your business. It may be to protect certain business activities or to divide business assets so shareholders can take responsibility for different parts of the business or so part of it can be sold. 

Company restructuring is fraught with tax issues and this can often be a deterrent. With careful planning, however, the commercial advantages of reorganising business activities or shareholdings can be achieved with little or no tax impact. We’ll explain the reliefs available for your potential restructure and if you go ahead, deal with the HMRC tax clearance procedure. 


Tax plays an important role in any transaction and can have a significant impact on the deal. Our team of multi-disciplinary tax specialists focus on the most tax-effective structure for a transaction and for future tax arrangements.  

Working closely with our Corporate Finance team, we’ll support you at every stage of the deal cycle. Our expertise and experience add real value to any transaction and includes: 

  • Relevant tax advice including pre-sale planning and structuring an acquisition. 
  • Specialist tax due diligence on target businesses. 
  • Tax clearances and negotiations with HMRC. 
  • Personal tax advice for vendors or management teams on Capital Gains, Income Tax and Inheritance Tax. 


Under the Criminal Finances Act 2017, a business failing to prevent an associated person from facilitating tax evasion will have committed a Corporate Criminal Offence (CCO). An ‘associated person’ is anyone performing services for or on behalf of the business, such as an agent, intermediary, subcontractor or employee. 

This means your business could be liable for an employee’s or other associated person’s criminal tax evasion, if it takes place when they are acting as an associated person of your business. If HMRC decides a CCO has been committed, your business will have a criminal record and faces a limitless financial penalty, plus significant adverse publicity and reputational damage. 

To defend against a CCO, you’ll need to satisfy HMRC that you had ‘reasonable’ procedures in place to prevent the tax evasion. We offer various packages to put those procedures in place, tailored to your business. 


The UK tonnage tax (TT) regime provides qualifying shipping companies with an alternative method for calculating their corporation tax. We support our corporate clients with expert advice on national and international tonnage tax facilities, including: 

  • Establishing whether the company or group qualifies for the regime. 
  • Strategic and commercial management issues including flagging of vessels, chartered-in tonnage and training requirements. 
  • Calculating relevant shipping profits incorporating chargeable gains/losses, capital allowances, finance costs and group relief issues. 
  • Acquiring and disposing of tonnage tax assets. 
  • We have worked with AAB for a number of years and in that time they have given us targeted specific advice which has saved us money. We value their input to both the company and our own tax affairs, and they always deliver on time.

    Enda G Logan, The Fifth Business

  • The payroll team at AAB responded to our questions in a timely manner and provided accurate answers that enabled us to process the payroll efficiently.

    Jan Poots, SengS

  • Everyone involved worked seamlessly together and also with the legal advisors, guiding me through the whole process which was completed within a very tight timeframe. Great job with a result better than I could have hoped for!

    Mark Milne, Milmor Properties Ltd

  • The work AAB provided on our auto enrolment was excellent. Timely and pragmatic work delivered to high professional standards, whilst remaining personable and efficient throughout. Well done!

    Richard Smeaton, PD&MS Group

#Updates See all updates

Sign up for the latest industry insights

  1. Blog26th Mar 2024

    Derek Gemmell, Head of Innovations Tax and author of blog about R&D tax relief procedures

    R&D Tax Relief Procedures: HMRC’s Latest Notification Requirement

    In today’s fast-paced business landscape, where staying ahead often means innovating and adapting to change, research and development (R&D) tax credits have emerged as a key tool for businesses, especially for small and medium-sized enterprises (SMEs).  As an R&D tax…

    By Derek Gemmell

    View more
  2. Blog20th Mar 2024

    Do you have an obligation to file an Annual Tax on Enveloped Dwellings (ATED) return by 30 April 2024?

    WHAT IS ATED? ATED is an annual tax payable in advance by companies and other non-natural persons (including partnerships with corporate members) who own an interest in UK residential property valued at over £500,000. The charge applies to houses, self-contained flats,…

    By Michaela McCombie

    View more
  3. Blog21st Dec 2023

    James Hunt, Gunhild Dam, Lynn Wilson, Lauren McIlroy, Stuart Petrie, Graeme Allan, Paula Fraser, Jill Walker, Gordon Steele, David Purse

    2023 Business Unit Year In Review

    Oxford recently released their word of the year for 2023 and it was “rizz”. If we had to pick a word for our year it would be ‘growth’. You might have heard us talk about our growth journey a time…

    View more
  4. Blog21st Sep 2023

    Alan Campbell, author of blog can employee ownership trusts provide an alternative to succession

    Can Employee Ownership Trusts (“EOTs”) provide an alternative to family succession?

    Known for their adaptable nature, innovative spirit and contribution to the economy, the importance of the successful continuation of our family businesses cannot be overstated. Retaining the ownership and running of the business within the family is often considered a…

    By Alan Campbell

    View more

See all updates

Our accreditations