Startup Advisory Service

A premier Thai accounting and consulting firm dedicated to providing a comprehensive range of financial services include audit, tax, and advisory work.

Explore Our Services

Startup Advisory Service

A premier Thai accounting and consulting firm dedicated to providing a comprehensive range of financial services include audit, tax, and advisory work.

Explore Our Services

0 Years

We have over 8 years of expertise in delivering trusted solutions

0 clients

More than 250 clients have benefited from our exceptional services.

About us

Welcome to Startup Advisory Service Co.,ltd.

Startup Advisory Services Co., Ltd.
A comprehensive business advisory firm that integrates the strategic foresight of an Advisor with the hands-on expertise of a Consultant. We specialize in designing and implementing internal management systems that are efficient, transparent, and fully compliant with regulatory standards.

Our team of professionals brings deep expertise in accounting, taxation, business law, human resource management, and payroll systems. We provide both long-term strategic advisory services and project-based consulting solutions tailored to the unique needs of each organization.

At Startup Advisory Services, we are committed to being a trusted partner—not only offering guidance but also working alongside our clients to build practical, scalable systems that support sustainable growth. We continuously adapt to the evolving landscape of business and regulatory change, ensuring our clients stay ahead with confidence.

We are committed to driving sustainable growth for our clients through high-quality, timely services, serving as trusted advisors for their success.

OUR SERVICES

We Truly Understand Our Clients' Needs SAS,
we are committed to genuinely understanding and meeting our clients' needs.
We drive and propel our clients' businesses towards sustainable growth
with our comprehensive services in auditing, taxation, and consulting

Accounting and Tax Services

SAS, we offer a comprehensive range of accounting and tax services designed to meet the highest standards of quality and professionalism. Our expert team is dedicated to providing accurate, timely, and reliable financial solutions tailored to your business needs.
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Company Setting Service

SAS, we provide comprehensive support for setting up your business in Thailand. Our professional team guides you through every step of the process, ensuring a smooth and efficient setup.
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HR and Payroll Services

SAS, we offer comprehensive HR and payroll services designed to streamline your business operations. Our professional team is committed to providing accurate and timely services, ensuring compliance with labor laws, and efficiently managing employee benefits.
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Audit and Assurance Services

SAS, we provide comprehensive audit and assurance services designed to enhance the reliability and credibility of your financial information. Our expert team is committed to delivering high-quality, independent audits that meet the highest standards of professionalism.
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Tax and Legal Services

SAS, we offer a comprehensive range of tax and legal services designed to help your business navigate the complexities of the regulatory landscape. Our expert team is dedicated to providing insightful and practical solutions tailored to your specific needs.
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Reviews

What our customers say about us

Voices of Trust from Our Clients

Throughout the time we have worked together, I have received full support from a team with knowledge, ability and commitment to creating quality work, which has given me confidence and trust in SAS's team as part of the management team.

Chatchawan Phuchanaphun
Eastern Produce and Services Co.,Ltd.

I would like to express my sincere appreciation to SAS’s team for its outstanding expertise in various areas of business management. The comprehensive support and professional service provided have earned my full trust, leading me to confidently include them as part of our executive team. Thank you for your continued dedication. I look forward to achieving greater success together

Kanawat Tepalagul
ISUZU HUA CHAING CHAN Co.,Ltd.

Feeling Grateful From Day One to Six Branches Strong
I feel incredibly fortunate to have partnered with Startup Advisory Services since the very beginning of our business journey. From day one, their deep expertise, professionalism, and unwavering commitment have played a key role in helping us grow — now with 6 branches and counting. Their team has been more than just consultants — they’ve been true partners in our success. I’m proud to have them as part of our leadership journey and excited for what lies ahead. Here’s to continued growth and shared achievements.

Thanathorn Kanchanabat
BYD HC GROUP

Throughout our collaboration, SAS has consistently demonstrated a high level of expertise, accountability, and systematic service delivery. These qualities have significantly contributed to the smooth and efficient operation of our organization, aligning well with our strategic objectives. It is truly a privilege to have the opportunity to work with a partner of such high standards, and we deeply value the meaningful support that SAS has provided.

Chanon Rumriankit
Bantanai Law Firm Co.,Ltd

SAS is more than just a consultant—they’re a true partner.From stepping in during staffing shortages to helping us secure funding, they’ve been there when it mattered most. Professional, reliable, and deeply committed—SAS is a team we trust.