Directions  |   Contact

Linkedin Facebook
Corporate Income Tax png Logo OF AO, Logo of Admin Outsourcing Company. Strong Growth in Thailand
call now!

Alliott Global Alliance

Elevating Our Services with Global Expertise

Alliott Global Alliance (AGA), one of the world’s largest and fastest-growing global multidisciplinary alliances. With this strategic partnership, we are enhancing our capabilities to deliver a broader range of services to our clients.

Our Services
download AO Accounting & Advisory Ltd.

Elevating Our Services with Global Expertise

Alliott Global Alliance

download AO Accounting & Advisory Ltd.

Alliott Global Alliance (AGA), one of the world’s largest and fastest-growing global multidisciplinary alliances. With this strategic partnership, we are enhancing our capabilities to deliver a broader range of services to our clients.

Our Services
Close-up of a person's hands using a calculator and holding a magnifying glass while reviewing a financial document. The individual, dressed in a suit, suggests they are engaged in professional tax services or financial analysis.

What is Alliott Global Alliance (AGA)?

A Brief History

Founded in 1979 as ‘Alliott Peirson International,’ AGA has been a pioneer in creating a global alliance of independently-minded, local professional service firms. Today, it stands as a global family of over 215 member firms spanning across 95 countries.

Core Philosophy

AGA is bound by a common belief that “Together as One,” we can share knowledge, resources, and opportunities to make our businesses stronger. Not just an alliance, AGA is a global family of accounting, tax, audit, law, and other specialist advisory firms.

Benefits for AO's Clients

Extensive
Global
Network

A dot matrix world map, crafted with densely packed small black dots on a white background, visually representing the continents and outlines of countries with a pixelated effect, inspired by Alliott Global Alliance's international network.

With AGA’s global reach, we can now provide unparalleled services in international tax plans, cross-border investments, and more, not just in Thailand but across the globe.

Seamless
Multidisciplinary
Services

A graphic showcasing several interlocking gears, with the central gear labeled "Tax." Other gears display icons like a dollar sign, magnifying glass, percentage symbol, and bank building. The background is blue. This visual represents Alliott Peirson International's comprehensive approach to global tax advisory services.

Through AGA, we can offer additional services such as legal and corporate consulting through our affiliated global partners.

Strategic
Decision
Advice

A close-up view of a silver chess set on a reflective glass board. The pieces, detailed with intricate designs, are arranged for play. The background is softly blurred, emphasizing the metallic texture of the chess pieces and the elegance of the scene—an image fit for Alliott Peirson International's refined taste.

Our alliance with AGA enables us to offer clients business insights and strategic decision advice backed by an international network of experts.

Message from the Chairman

“We are delighted and honored to represent Thailand as AGA’s sole accounting and tax member. Being part of this respected global alliance not only strengthens AO’s international reach but also creates new opportunities for collaboration, knowledge sharing, and business development across borders. We look forward to contributing our expertise and building strong partnerships within the AGA network.”

— Dominik Heer, Chairman, AO Accounting & Advisory Ltd.
Two Pacific Place AO Accounting & Advisory Ltd.
AGA worldwide Confrerence AO Accounting & Advisory Ltd.

Up Comming Events With AGA

We look forward to participating in AGA’s World Conference held in Toronto on 29 October – 02 November 2025

A record 160 accountants and lawyers from 52 countries will be in Athens for Alliott Global Alliance’s (AGA’s) 2025 Worldwide Conference.

Contact Us
Post Views: 32