Taxation can be a complicated process. At McMahon & Co we can help you take control of your tax responsibilities…


We work with you across all areas of taxation that are relevant to you or your business.  In addition to our compliance services, we will focus on tax planning and minimising your tax liabilities.

Below is a summary of our key tax services.

  • Personal Tax (including sole traders and partnerships)
  • Corporation Tax
  • VAT
  • PAYE and NI
  • HM Revenue and Customs Investigations
  • Please contact us with any tax queries or questions.

McMahon & Co - Certified Public Accountants

30 Years of Experience

Our Portadown-based office has been providing accountancy services to businesses for over 30 years!

Friendly & Efficient

We pride ourselves on our commitment to providing a fast, friendly and efficient service to all clients!

Loyal Clientele

For the past 3 decades we have continued to receive loyal support from our list of delighted customers!

Planning for the future

Our professional team stay updated on all changes to Legislation and technology to help you avail of all the latest services!