About AO

AO is Thailand’s leading boutique business expansion specialist, with International knowledge and local expertise in business management, accounting, corporate legal services, governance and  payroll tax attorney.

Two Pacific Place AO Accounting & Advisory Ltd.
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International Expertise

Decades of experience serving multiple developed and developing markets.

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Local Mastery

Deep knowledge of the Thai market to better serve local businesses.

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Bespoke Solutions

Tailored accounting and legal services that fit your unique needs.

Accounting & Advisory History


AO was founded in 2006 as Administration Outsourcing Co., Ltd and has expanded to serve more than 100 organisations annually, from Thailand and globally, and employ more than 30 local Thai staff. Administration Outsourcing rebranded as AO in 2024 and as part of the ongoing growth strategy expanded services to include additional Legal and Advisory services and in January 2025 merged with Asia Accounts.

Asia Accounts is recognized as one of the Top 5 Xero Advisors in Thailand and in 2023 received the “Outstanding Small Company” award at the annual Thailand International Business Awards organized by the British Chamber of Commerce – Thailand.

About Our Leadership Team

Our management team have extensive experience working with a number of developed and developing markets including: the United Kingdom, North America, Australia, Switzerland, Germany, Kenya, Hong Kong, Singapore, and Thailand.

team 1 AO Accounting & Advisory Ltd.

Chambers and Associations

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