About Us

When you choose Optimum, we’ll help you understand all of the requirements for personal income tax, corporate income tax, VAT and accounting according to Thai law with our team of qualified English speaking accountants. We’ll also provide clear advice and explanations about confusing areas such as withholding tax, tax returns, VAT, new business taxation and more.

Optimum has provided services for a wealth of customers from various industries. Our experience and expertise have earned us notable recognition and awards, including the Good Governance Award and the prestigious award for Excellence in Accounting Development.

As a firm membership, IR Global guarantee the highest quality boutique and mid-sized firms who service the mid-market. Firms which are focused on partner-led, personal service and have extensive cross border experience.

Represented in 155+ jurisdictions, covering over 70 unique practice areas, we are perfectly placed to offer the highest quality bespoke advice that meets the needs of the most complex client requirements.

Pimrapas Suktitipat

Managing Director

Certified Public Accountant

Khun Pimrapas Suktitipat is a Managing Director of Optimum Accounting Services Co., Ltd, Thailand and is a CPA by Thai Federal Accounting Professions. She has a solid background in both education and working experience in auditing, accounting, tax, and business advisory with multi-national environment. She holds a Master degree in Accounting and Finance at University of Southampton, UK and a Bachelor degree in Accountancy from Chulalongkorn University. Pimrapas had past experience working in international assurance Big4 firm, MNC and FMCG company in Thailand, New York and Singapore for over 15 years.


Cost-effective and manageable

Well-organize and stable service team

English speaking accountant

Proficient & Reliable and Qualified experience service team

Committed timely deliverable and well – organize schedule

International Proficiency Service

with Local Price

For any questions, queries or advice about our tax
and accounting services,
please do not hesitate to contact us.

Optimum Accounting Services Co., Ltd.

Phone: +662 636 3464

Fax: +662 636 3466


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