Services
To meet your needs
Accounting & Tax
Outsourced Accounting
End-to-end bookkeeping and accounting support to keep your business compliant, organized, and financially visible.
Tax Compliance
Comprehensive tax compliance under Thai tax laws, covering preparation, filing, and ongoing regulatory requirements.
Advisory & Transactions
Expert support for year-end statutory audits, Financial Due Diligence, and strategic financial decisions.
Corporate Legal
Market Entry & Business Setup in Thailand
We support foreign investors, entrepreneurs and international businesses in choosing the right legal structure and setting up operations in Thailand in compliance with regulations.
Corporate Governance & Licensing
Our corporate secretarial team handles company registration updates, maintenance of statutory books, share transfers, and capital increases. We also help to obtain required business permits.
Commercial Legal
Support
We provide practical legal support throughout your business lifecycle in Thailand, drafting and reviewing commercial contracts, and advising on employment matters.
HR Advisory Services
Payroll &
HR Administration
This service covers the core day-to-day HR administration and payroll functions required to run a compliant workforce in Thailand.
Visa &
Work Permits
We support employers and expatriate staff to obtain and renew visa and work permits with expert guidance, compliance assurance, and timely processing.
Recruitment & Employer of Record (EOR)
Through trusted partners, we help businesses hire qualified staff and build teams, or to deploy staff in Thailand without establishing a local entity.
- Industries
Our Industries
Food & Beverage
The Food & Beverage industry in Thailand spans food production, processing, distribution, and foodservice, supported by strong domestic consumption and a vibrant tourism sector. We advise a range of Thailand-based and regional F&B clients, including premium restaurants, quick-service chains, and food and beverage producers operating across Bangkok and key tourist destinations.
Technology & Software
Thailand’s Technology & Software sector is driven by digital transformation, platform adoption, and emerging technologies across consumer and enterprise markets. We support international and regional technology companies with operations in Thailand, including businesses in blockchain solutions, B2C digital platforms, and PropertyTech serving the local real estate ecosystem.
Professional Services
The Professional Services industry in Thailand provides essential advisory, technical, and compliance support to both local and international businesses. We work with clients across management consulting, IT and digital services, legal advisory, engineering, and HR/recruitment, many of whom serve multinational clients or operate within regulated Thai markets.
Creative Agencies
Thailand’s Creative Industries benefit from a strong design culture and growing demand for high-quality architectural and creative services. We service international architecture, design, and creative firms operating in Thailand, supporting their local operations and regional project activities.
Investment Holdings (SPVs) for Private Equity and Venture Capital
We support international and regional Private Equity and Venture Capital firms investing in Thailand, advising on deal structuring and the establishment of Thailand-based and offshore SPVs. Our services include SPV incorporation and administration, regulatory and tax compliance, and ongoing portfolio and investor reporting for Thai operating companies.
Dormant & Holding Companies
We provide ongoing administration and compliance services for Thailand-registered dormant and holding companies across multiple sectors. Our team ensures full compliance with Thai accounting rules, tax filings, statutory reporting, and corporate secretarial requirements, allowing clients to maintain entities efficiently and in good standing.
Agile, tech-driven, and trusted
Why us
Trusted experts with years of experience and industry accreditation
Established in 2006, AO is a trusted Accounting & Tax, Legal, and HR advisory firm in Bangkok, supporting foreign-owned businesses from fast-growing startups to large multinational companies.
We act as a long-term partner to our clients, delivering practical professional advice that help you navigate the complexities of doing business in Thailand .
Backed by an experienced management team and a state-of-the-art technology platform, we deliver effective accounting, tax and payroll services, as well as corporate legal support throughout the lifecycle of your business.
2 decades of proven Accounting, Tax & Compliance expertise
Serving a thriving community of
Satisfied customers
A dedicated expert team at your service
Guided by integrity, trust, and client-centricity, our values drive everything we do.
Integrity
Uphold high ethical standards and act with honesty, transparency, and professionalism in all your interactions.
Long-Term Relationships
Build long-term relationships with your clients based on trust, open communication, and mutual respect.
Teamwork / Collaboration
Working together creates stronger ideas, better outcomes, and lasting trust.
Expertise
Stay up-to-date with industry trends, regulations, and best practices to offer informed advice to your clients.
Accountability
Monitor progress, review strategies, and make adjustments as needed to help clients stay on track towards their financial goals.
Innovation
Embrace new ideas and technology to keep improving and moving forward.
Get started
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