O'BRIEN HARNETT LIMITED

Walsh O’Brien Harnett is a professional advisory firm ranked among Ireland’s top 20 accountancy practices. Backed by almost seven decades of collective experience, the firm is led by a dynamic team of five partners and brings together chartered accountants, registered auditors and chartered tax advisors under one modern practice.

The firm’s expertise spans a wide range of sectors, including family‑ and owner‑managed businesses, international enterprises, charities and not‑for‑profit organisations, as well as professional services firms. Clients benefit from a full suite of advisory services – from audit and assurance to tax planning and compliance – delivered with the personal attention and professionalism highlighted by long‑standing partners such as Paul Toner of Toner Transport & Logistics and Rev. Liam Griffin of the Oblates of Mary Immaculate.

Walsh O’Brien Harnett’s reputation for honesty and leadership is reinforced by industry accolades, including double wins at the Irish Accountancy Awards 2025, and a steady stream of insightful publications on tax, budgeting and regulatory developments. The firm’s client‑focused approach makes it a trusted adviser for organisations seeking robust, forward‑looking financial guidance.