Since 1982 we have been providing cross border expertise, offering a range of accountancy and specialist taxation services. Our 30 qualified staff can service our client needs on an all-Ireland basis. Our Cross Border Practice deals with Tax and Compliance Regimes in the UK and ROI, dealing with client business of all sizes from local to global with a specialism in Family Business and Start-Ups.

We have deep industry expertise across all the main sectors on the Island of Ireland. With offices in Dundalk, Belfast and Newry, our client nucleus encompasses the Greater Newry and Belfast regions, Counties Down, Armagh, Louth and Monaghan but our experience draws clients from across Ireland and the UK.

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About Us

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John MacMahon & Co. Chartered Accountants is a cross-border practice which was established in 1982. Today we have offices in Dundalk, Belfast and Newry and employ over 30 qualified staff to service clients on an all-Ireland basis. John MacMahon & Co is a service-orientated firm with a strong client base in South Down, South Armagh, North Louth and Monaghan offering particular expertise in cross-border tax issues. We are committed to providing a service uniquely tailored to your business' needs - developing and advising on an individual basis.

Meet the Team

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Today we have offices in Dundalk, Newry and Belfast and employ over 30 qualified staff to service clients on an all-Ireland basis. A UCD graduate, after gaining experience in Dublin working for Arthur Andersen John founded the practice in 1982 to offer accountancy services to clients on both sides of the border.

Services

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John MacMahon & Co provides all the regular services associated with a chartered accountancy practice. The firm has also developed specialisations in a number of services due to the practical focus on business requirements in the border regions. Providing services to deal with the whole spectrum of accounting issues and help you step-by-step through the necessary auditing process to help improve and enhance your business activities.

Accounting & Audit

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John MacMahon & Co provides services to deal with the whole spectrum of accounting issues for businesses of all sizes in a wide range of sectors. The firm's highly-qualified auditing team will help you step-by-step through the necessary auditing process to help improve and enhance your business activities.

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