Expert Accounting & Tax Solutions for Irish Businesses
From compliance to cash flow, we help you stay in control. Our team delivers tailored financial services that reduce tax liabilities, improve efficiency, and give you more time to focus on growing your business.
We provide expert accountancy and tax planning services tailored to the needs of individuals, SMEs, and growing companies across Ireland.
From private clients and early-stage start-ups to established SMEs and larger enterprises, we bring a flexible, results-driven approach that adds value regardless of industry or business size.
Our clients benefit from the technical expertise of experienced professionals combined with a friendly, down-to-earth service.
We offer clear, practical advice on areas like inheritance tax planning, corporate finance, compliance audits, and strategic growth.
Whether you're seeking long-term financial direction, tax-saving strategies, or help staying compliant, we tailor our solutions to fit your goals. With Sean O’Sullivan & Co, you gain a trusted partner focused on simplifying complexity and supporting your long-term success.
Why Choose Sean O Sullivan & Co?
Proudly serving Irish businesses since 1988, Sean O’Sullivan & Co is a family-run accountancy firm built on trust, experience, and long-term client relationships.
Founded by Sean O’Sullivan, we’ve grown to support businesses across Kerry and beyond, with offices in Dingle and Killorglin. Whether you're a start-up, sole trader, or established company, we offer expert guidance that simplifies your finances and supports your success.
As a family business, we bring a personal touch to professional services. Our team offers deep expertise in financial statements, tax compliance, audits, pensions, life assurance, and cloud-based solutions — all delivered in plain English, with no hidden fees.
We’re also proud to be the most westerly Xero practice in Europe, helping clients modernise their finances with real-time, cloud-based accounting.
The latest from our newsletter
Stay Informed with the Latest Business Insights
At Sean O Sullivan & Co, we curate and share the latest relevant business articles to keep you up to date with industry trends, financial updates, and important changes that could impact your business. Our goal is to provide you with valuable resources that help you make informed decisions and stay ahead in an ever-evolving business environment.
By regularly sharing these hand-picked articles, we ensure you're always in the loop with the information that matters most to your business. Whether it's news on legislation, tax changes, or best practices for growth, we make it easy for you to access the insights that could help shape your business strategy.
Current Budget Summary
Understand the Real Impact
Budget measures can be confusing, and headlines rarely show the full picture. In this podcast, Sean O Sullivan & Co explains how the changes affect both individuals and businesses. From income tax updates to SME support, we highlight what really matters so you can plan confidently for the year ahead.
Listen Anytime
Your time is valuable, so our Budget podcast is available whenever it suits you—at work, on the road, or at home. In under 20 minutes, Sean O Sullivan & Co brings you the key insights you need without interrupting your day.
Check it out
Visit our dedicated Budget Summary landing page for insights, flipbooks, and our 20-minute podcast.
Sectors We Work With — Tailored Solutions for Every Business Structure
At Sean O Sullivan & Co, we specialise in helping businesses across a wide range of sectors, whether you're a limited company, a sole trader, a freelancer, or a partnership.
Our team offers expert guidance and tailored solutions designed to support the unique needs of your business structure, ensuring growth, compliance, and long-term success.
We are committed to providing businesses in various sectors with the tools and resources they need to navigate challenges and optimise performances.
Whether you’re starting out, scaling up, or streamlining operations, we focus on delivering the strategic advice and financial support that aligns with your business model and goals.
Comprehensive Services to Support Your Business Every Step of the Way
At Sean O Sullivan & Co, we are dedicated to helping your business grow, stay compliant, and thrive. Our team provides expert guidance and tailored solutions that are designed to meet your unique needs and support your success.
We are committed to supporting your business at every stage of its journey. Our focus is on providing the tools, resources, and expert guidance you need to navigate challenges, optimise performance, and achieve long-term success.
Sean O Sullivan & Co
Frequently Asked Questions
Switching accountants is straightforward. We handle the transition for you, including liaising with your previous accountant to ensure a smooth handover of financial records.
