WHY CHOOSE US

Built on Experience. Focused on Your Business.

An Accounting Firm Built Around Its Clients

PTB Accounting is a Dublin-based accounting and advisory firm supporting owner-managed businesses, professionals and international companies. We combine experience from Irish accounting practice and multinational businesses with a practical, responsive approach to client service.

  • Partner-Led, Personal Service
  • Irish Practice & International Experience
  • Practical Advice for Growing Businesses

Our mission is to provide clear, practical accounting, tax and business advice that helps our clients make better decisions — not simply meet their compliance obligations.

We aim to understand each client’s business, respond when advice is needed, and build long-term relationships based on trust, accessibility and commercially grounded advice.

Clear Advice Without Unnecessary Complexity

Support Beyond Year-End Compliance

Long-Term Client Relationships

Our vision is to build a modern, trusted accounting firm that combines strong technical expertise with responsive, commercially focused advice.

We want PTB to grow alongside our clients — supporting owner-managed businesses, professionals and international companies as their accounting, tax and advisory needs become more complex.

Technical Quality & Professional Standards

Technology-Enabled, Efficient Service

Growing Alongside Our Clients

What Makes PTB Different

Collaborate securely

Partner-Led Service

Work directly with experienced professionals who understand your business and remain accessible throughout the year.

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Embedded Analytics

Practice & Industry Experience

Experience across Irish accounting practice and multinational businesses gives us both technical depth and commercial perspective.

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Time tracking

Local Expertise, International Perspective

Dublin-based support for Irish businesses and international companies navigating accounting, tax and compliance in Ireland.

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Why choose us?

We combine expert knowledge with a personalized approach, ensuring your accounting needs are met with precision and proactive advice.

100+
Clients
75+
Years Combined Experience
100%
Cloud-based Solutions

Trusted by Businesses

Supporting businesses across Ireland and beyond

our team

Meet Our Team

Changlong Zhu

Managing Director

Founder and Managing Director of PTB Accounting Limited, with extensive experience in audit, financial reporting and business advisory across Irish practice and multinational environments.

Pierce James

Consulting Partner

Consulting Partner at PTB, supporting clients on business advisory, technology and operational matters.

Barry Mullen

Tax Partner (External)

Barry is an Associate of the Irish Taxation Institute and a Chartered Tax Adviser (CTA) advising clients across a wide variety of tax heads.

Mo Shen

Experience in internal audit, finance business partnering and client operations, Experience in internal audit, finance business partnering and client operations, with a Postgraduate Diploma in Accounting from Trinity College Dublin.

Leads client service and operations at PTB, supporting efficient delivery, internal coordination and strong client relationships.

Ella Zhang

Senior Accountant

Chinese CPA and former Audit Manager with experience in audit, financial reporting and quality review.

Sophia Sufei Chen

Associate

Provides support to PTB’s day to day accounting operations, ensuring accurate, efficient, and compliant financial record keeping

Testimonials

Darren O’Reilly,
   Managing Director, The Ashdown Group

“PTB were brought in to help manage our transition as part of an acquisition with tasks including the general accounting support, setup, tax advice and leadership team accounting support. Their team were professional, approachable, and excellent communicators.

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