After graduated from Thammasat University since 1961, he worked as accounting manager for many years. With experience on his job to solve many problems include tax and accounting, he founded "Sangthammarat Accounting Partnership" on early 1976 for only accounting service. A few year later, he adopt the partnership to company limited with the new brand name P.S.Accounting on 1982 (P.S.Accounting is stand for Prateep Sangthammarat Accounting) and extend the scope of service to legal, audit and more.

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Now he is the chairman of P.S.Accounting Co.,Ltd. and he still working as consulting to several business.

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Contact : prateeps@psacct.com