Senior Partner

Mergers and Acquisitions and Tax and Customs

Promboon Sookatup has extensive experiences in the area of tax and customs laws. Promboon graduated LL. B. from the Faculty of Law, Thammasat University (2nd class honour); and obtained LL. M. from the School of Law, Queen Mary University of London in major of International Commercial Law. Currently, Promboon is also pursuing a Master of Business Administration (MBA) at the Faculty of Commerce and Accountancy, Chulalongkorn University.

Promboon has worked in Tax Department for Blumenthal Richter & Sumet Ltd. where she was in charge as a senior associate and involved in all tax matters including contributing advices on tax and customs matters and representing clients in disputes with relevant government authorities.

After her successful period at Blumenthal Richter & Sumet Ltd., Promboon gained further experiences at Weerawong, Chinnavat & Partners Ltd. in M&A Department where she involved in several business transfer/acquisition projects of companies listed in the Stock Exchange of Thailand or their subsidiaries. 

Promboon is appointed for a second term as a subcommittee for revenue tax of the Thai Chamber of Commerce (Term 2019-2020) which represents its members in giving responses to government’s policy towards issuance and amendment of laws relating to revenue tax. 

In 2018, Promboon was appointed into a working group of Revenue Tax Law Reform under the National Reform Committee of which mandates are to perform research on problematic issues in the current Thailand’s revenue tax system and to produce a report on suggestions for revenue tax reformation to the government. The report was finalized and submitted to the National Reform Committee in late 2018.

Promboon accepted the invitation to join PROMPT in August 2018 in a partner position. At PROMPT, Promboon leads in Tax Department. She has brought in and taken care of all clients in tax related matters. Her role includes giving advice to clients on corporate tax planning, tax planning for specific commercial transactions and tax planning for M&A projects. She also represents client in settling disputes with the Revenue Department.


Thai and English

Other Positions

A subcommittee of the Revenue Tax Law Committee, the Thai Chamber of Commerce
A member of working group of the Revenue Tax Reformation Committee established by the Law Reform Commission of Thailand


Queen Mary University of London (LL.M.)
Thammasat University (LL.B.)

Work Experiences

Weerawong, Chinnavat & Partners Ltd.
Blumenthal Richter & Sumet Ltd.