Spearheaded by Niamh Keogh, Dentons Ireland LLP‘s tax team is well-placed to provide Irish tax support on large transactions.

Taylor Wessing‘s Irish tax team, led by Patricia McCarvill, provides comprehensive corporate tax services, and stands out for its private wealth practice.

The A&L Goodbody LLP tax team has strength across M&A and corporate projects, tax disputes and transfer pricing. Particularly well-known in the mid-market M&A space, the team assists businesses in a diverse range of sectors, including the pharma, financial services, technology and renewable energy spaces. The team is also noted for its experience handling private equity mandates and acting on debt capital issuances. Specialising in corporate tax but bringing extensive experience across a broad range of tax matters, Paul Fahy heads the team. Domestic and international clients turn to Amelia O’Beirne for transactional and contentious matters, particularly with cross-border aspects, while James Somerville is a go-to for financial services and property related tax mandates. Philip McQueston is another key member of the team.

Large public companies, banks and government bodies turn to Arthur Cox‘s tax group for assistance with a broad range of matters. The team has a particularly strong corporate advisory practice, with expertise in IP structuring and financial services, including tax issues connected to securitisations, CLOs, CDOs and CMBSs; the group’s experience representing clients before the Tax Appeals Commission and the Irish superior courts is also noted. With expertise in structured finance, David Kilty heads the group, and is supported by chair of the firm Fintan Clancy, who is recognised for his experience advising on the tax issues arising from transactions. Chair of the firm Ailish Finnerty is another key member of the group, who focuses on international clients (particularly US clients) doing business in and through Ireland.

Covering the full range of advisory, transactional and disputes work, Matheson LLP’s tax team is a go-to for key financial institutions and US and EU multinationals. The team has particular expertise advising on international tax matters, indirect taxes, tax controversy work and transfer pricing. Leading the group is Shane Hogan, who focuses on inward investment projects, restructurings and M&A, as well as cross-border tax planning. Matthew Broadstock specialises in indirect taxes, while Joe Duffy frequently advises on international restructurings and tax controversy. Other key contacts include Catherine O’Meara and Tomás Bailey, as well as Gerry Thornton.

Combining ‘technical expertise with a pragmatic and commercial approach’, the tax team at William Fry LLP provides full-service advisory, structuring and compliance support on domestic and international transactions. This is complemented by a well-established tax disputes offering that handles significant matters before the TAC and High Court. Clients across a variety of sectors benefit from the firm's dedicated inward investment team, the expanding financial services tax group and the transfer pricing advice delivered in conjunction with Taxand specialists. Sonya Manzor, who heads the practice, regularly advises on inward investments, corporate reorganisations and major M&A mandates. Ted McGrath adds further strength to the group’s tax offering, particularly regarding financial services issues, and Colin Bolger is another name to note.

DLA Piper Ireland LLP‘s tax team is a key contact for banks, financial institutions, asset managers, funds and investors. The group frequently advises on the Irish tax aspects of big-ticket acquisitions and other corporate transactions. Maura Dineen spearheads the offering and has a wealth of experience across corporate international tax, advisory, planning and structuring mandates. Declan Lavelle is a strong choice for inbound and outbound investment, IP and financing structures, and transfer pricing mandates.

The tax team at Maples Group is well-reputed for its international private credit and Irish CLO practice. The group regularly advises on Irish regulated fund ICAVs and the establishment of regulated Irish Investment Limited Partnerships. Alongside these core parts of the team’s offering, the team also assists clients with tax controversy, tax insurance and aviation mandates. Andrew Quinn leads the team, which is supported by William Fogarty, who is a go-to for advice on the establishment and operation of regulated funds and investment structures. Lynn Cramer is another key contact.

Covering a diverse range of transactional and advisory mandates, the Mason Hayes & Curran Professional Services Ltd‘s tax team is particularly well-equipped to advise on corporate and M&A transactions and financial services matters; it is also a go-to for clients in the technology, life sciences, built environment and energy sectors. With expertise in international tax and transfer pricing, Kevin Mangan leads the team alongside Niamh Caffrey, who is adept at advising on tax issues linked to corporate acquisitions, reorganisations and disposals, as well as structured financings.

McCann FitzGerald LLP is engaged in a wide range of tax matters, with core strengths across corporate transactions, finance tax, and real estate and construction-related mandates such as domestic and international property investment and funding structures. The team is also increasing its tax disputes presence and work in funds tax. Co-heads Alan Heuston and James Quirke are both well-placed to advise on corporate transactions, while Deirdre Barnicle and consultant Eleanor MacDonagh, who also lead the team, specialise in financial services tax.

Noted for its CLO expertise, Walkers‘ tax team regularly advises on financial services transactions across asset classes and specialisations, as well as on M&A, real estate and other commercial transactions. Advice relating to investment funds and aircraft leasing remains a cornerstone of the practice. Jonathan Sheehan leads the team, and is supported by newly promoted partner Eimear Burbridge, tax consultant Padhraic Mulpeter and Michael Gallagher.

Byrne Wallace Shields LLP‘s tax team is noted for its capability acting on large transactions, particularly in the real estate sector. At the helm is Anthony Smyth, who is an expert adviser on financial services and property-related tax, while Lee Squires leads the indirect tax practice. Andrew Feighery specialises in advising on Revenue interventions and strategic tax planning. With in-house CFO experience, Adrian Watson rejoined the firm in 2025 to head the tax compliance practice, another core part of the group’s offering.

Eversheds Sutherland's Ireland tax group is now led by Robert Dever, who joined the practice in late 2025. Dever acts for a varied roster of domestic and international corporates, with noted expertise in the tax aspects of M&A transactions, corporate reorganisations and inward investments.

The comprehensive tax offering at RDJ LLP caters to international and domestic corporates and high-net-worth individuals, particularly those seeking tax efficient succession planning advice and consultancy services. John Cuddigan, who leads the team, provides tax structuring advice, while Eoin Tobin leads the private client services work. Mark Barrett has proved a key adviser on the tax elements of M&A transactions.