Filed live · From the Yan Nawa office
Pantone 1797 U · K : 50 · Vol. 27 / 2026
Audit is a relationship with a deadline; it is also a relationship with a signature. For over thirty years, C&A has worked with Thai companies on the discipline of closing the books, reporting honestly, and meeting the regulator's eye.
Every audit opinion that leaves our door carries a CPA signature, and that signature belongs to someone who has read the file.
C&A was founded as a partnership practice. Every audit opinion leaves our door with a CPA signature on it, and that signature belongs to someone who has read the file.
Audit is a relationship with a deadline. It is also a relationship with a signature. For over thirty years we have worked with Thai companies, from family-owned trading houses across Bangkok to listed industrials and foreign-owned BOI enterprises, on the discipline of closing the books, reporting honestly, and meeting the regulator's eye.
We are not a brand name with a Bangkok office. We are a Bangkok office.
Our partners qualify under the Federation of Accounting Professions of Thailand; our opinions are accepted by the Revenue Department and the Thai SEC. When you engage C&A, you engage the partner.
That is the practice our founders built in 1992 — first as C&A Accounting Firm, then incorporated as C&A Audit Office Co., Ltd. in 2015 — and that is still the practice today. A small partnership grew into a seven-partner firm by saying no to the things that compromise the work.
We sign in our own ink. We file in our own name. The opinion that arrives at your annual general meeting is the same opinion we discussed across the table.
This document is the firm's profile of record for the 2026 fiscal year. It is reviewed and revised annually.
Assurance is the backbone. Tax, consulting, and litigation support are delivered by the same partner team, with the same standards of evidence and documentation.
Seven CPA-licensed partners, led by Jintana Techamontrigul. Each engagement is owned by a named partner from proposal through report. No factory hand-offs.
A cross-section of Thailand's real economy, from Bangkok-listed industrials to family-owned trading houses, financial institutions, and foreign-invested BOI enterprises.
Our CPA licenses, firm registrations, and regulator approvals are current and verifiable.
Firm and partner registrations under Thailand's statutory professional body for auditors and accountants.
Registered tax preparer and approved representative in Revenue Department examinations and appeals.
Approved auditor for specific categories of SET- and mai-listed companies under SEC Notification.
A quiet trajectory: from a small accounting practice founded in 1992 to a seven-partner audit firm today, formally incorporated in 2015. Growth on our own terms.
15 June · Bangkok. Established as C&A Accounting Firm under the Federation of Accounting Professions.
Approved auditor for listed companies under SEC Notification.
Dedicated tax advisory launched; first PND.50 appeal won.
5 January · Renamed and registered as C&A Audit Office Co., Ltd.
Relocated to 53 Narathiwas Ratchanakharin Road; capacity doubled.
Today. Still a partnership; still signing under our own names.
Walk-ins welcome by appointment. Most engagements begin with an email and a thirty-minute conversation.
A partner reviews every inbound proposal request and responds within two business days, with a fixed-fee quote tied to scope.
Email managing partner → +66 (0) 2 518 0720Send a brief about your entity, last fiscal year, and audit timeline. A partner returns a fixed-fee proposal within two business days, with no factory hand-offs, no follow-up by junior associates.
