Insight

Reference

·

Primary source

Big 4 audit market share

~55%

As ofFY2024·Sources2·Primary

Deloitte, EY, KPMG, and PwC together capture ~55% of Thai audit, accounting revenue, concentrated on SET-listed, MNC subsidiary audits. International mid-tier ~18%, local Thai mid-tier, boutique ~22%, outsourced ~5%.

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Figure in context

Deloitte, EY, KPMG, and PwC together capture ~55% of Thai audit, accounting revenue, concentrated on SET-listed, MNC subsidiary audits. International mid-tier ~18%, local Thai mid-tier, boutique ~22%, outsourced ~5%.

Deloitte, EY, KPMG, and PwC together capture ~55% of Thai audit, accounting revenue, concentrated on SET-listed, MNC subsidiary audits. International mid-tier ~18%, local Thai mid-tier, boutique ~22%, outsourced ~5%.

Time scope

FY2024

Source basis

Primary source

Interpretation notes

What this tells you

Deloitte, EY, KPMG, and PwC together capture ~55% of Thai audit, accounting revenue, concentrated on SET-listed, MNC subsidiary audits. International mid-tier ~18%, local Thai mid-tier, boutique ~22%, outsourced ~5%.

What not to do with it

Use the linked report for interpretation and keep basis differences explicit.

Related figures

Adjacent numbers that add context without drowning the value.

FY2024
~THB 29B

Thai audit, accounting services market

FAP, SEC, Big 4 Thailand, DBD

FY2024
~60,000

Registered Thai CPAs

FAP / TFAC CPA registry

FY2024
10-year

SEC mandatory audit-partner rotation

SEC Thailand, FAP

FY2024
~22%

Local Thai mid-tier, boutique share

FAP, DBD, Insight triangulation

Report context

Thailand Audit & Accounting Market Intelligence

Thailand's audit, accounting services market is ~THB 29 billion (triangulated from FAP CPA registry, SEC approved-auditor list, Big 4 Thailand disclosures, DBD FS filing registry). Big 4 (Deloitte Touche Tohmatsu Jaiyos, EY Office, KPMG Phoomchai Audit, PwC ABAS) capture ~55% concentrated on SET-listed, MNC clients. International mid-tier (BDO, Grant Thornton, Forvis Mazars, RSM, Baker Tilly, Crowe, HLB) ~18%, local Thai mid-tier, boutique ~22%, outsourced accounting ~5%. Federation of Accounting Professions (FAP/TFAC) licenses CPAs, sets TFRS standards (IFRS-converged). SEC enforces auditor rotation, Key Audit Matters (KAM). Pillar Two, sustainability assurance, Thai IOD CGR drive practice expansion.

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Atlas actors in this figure's reports

Profiles covered in the report that cite this number.

Bangkok Bank

Largest Thai commercial bank by assets — THB 4.5T FY2024, only Thai bank with an ASEAN regional consumer-banking franchise via Permata Bank Indonesia.

Bank of Ayudhya

Japan's MUFG owns ~77% — Thailand's strongest consumer-finance franchise via Krungsri Auto and Krungsri Card. FY2024 assets ~THB 2.7T.

Kasikornbank

Top-4 commercial bank with the deepest retail, SME franchise — THB 4.3–4.4T FY2024 assets and the LINE BK digital-banking JV.

Kiatnakin Phatra Bank

Listed commercial bank; investment banking, capital markets specialist post-2021 Phatra merger; ~THB 25-28B FY2024 revenue.

Krungthai Bank

State-linked top-4 bank — THB 3.7T FY2024 assets and operator of the Paotang super-app, Thailand's largest government-payments channel.

SCB X

Top-4 bank holding company (over Siam Commercial Bank) with a digital-ventures architecture — FY2024 group revenue ~THB 190B.

Big 4 audit market share · Insight