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Growing your Business


Professional Expertise


Accounting Service

With over 30 years experience, we provide accounting service from our expertise partners and staffs, our services include,

+ Bookkeeping Service

+ Tax Filing Service

+ Payroll Service

+ Social Security Contribute

+ Others 


We provide auditing expertise with Certified Public Auditor in our team. Our service include,

 + Annual Audit

 + Interim Audit

 + Due Diligent

 + Internal Audit

Legal Service

If you are looking for global legal services with a reasonable fee, we could provide you,

 + Setting up Company

 + Offshore, Onshore Business

 + VISA & Work Permit 

 + Attorney

 + Other Legal Services



P.S. Accounting Co.,Ltd. (PSA) was established in 1982. We have focused on providing services in auditing, accounting, tax consulting, legal service, software development and integration (under subsidiary company).

PSA has been providing services to more than 400 clients working in both domestic and oversea such as Taiwan, Japan, Malaysia, China, Sweden and various industries such as manufacturing, trading and services. We constantly strive through each services provided to bring the highest satisfaction for our clients with the our policy “The Best Quality Accounting Service”.

On 2011, PSA has got Quality Accounting Standard which provide by Department of Business Development (under Ministry of Commerce Thailand) and we have been a part of Morison Global (former KS International), a global association of independent professional firms on 2013. Now we have 3 partners and almost 30 staffs working with in.



On 2013, P.S.Accounting Company Limited have been in a part of Morison Global as Thailand membership. Morison Global was “born” on 1 April 2016, following a high-profile merger of two quality associations – Morison International and KS International. For more information, please visit

independent member Morison Global Logo_REV.png

Morison Global is a leading international association of high-quality, independently owned and managed professional services firms. Underpinned by its values, it collaborates to serve the cross-border accounting, auditing, tax and consulting needs of its members’ clients. Morison Global is an international association of independently owned and managed professional firms. Professional services are provided by individual member firms. Morison Global does not provide professional services in its own right. No member firm has liability for the acts or omissions of any other member firm arising from its membership of Morison Global.


Prateep Sangthammarat

Founder Partner

+66 2 282 7908 # 112

+66 87 489 9944

Thongkoon Sangthammarat (TONY)


+66 2 628 5085

+66 81 895 4626 

Worrakit  Pholsawad

Legal Partner

+66 2 282 7908 # 126

+66 89 811 6128 



For any inquiries, questions or commendations, please call: 66 2 282 7908 Attn 124 or fill out the following form

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Head Office

10-11 Luk Luang Road, Dusit,

Bangkok 10300

Tel: +66 2 282 7908 Attn 124,126

Direct: +66 2 628 5085

Mobile: +66 81 895 4626 

Work with us

To apply for a job with P.S.Accounting Co.,Ltd.  please send your profile to:

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