The Thai Banking System
Commercial bank business in Thailand started with the establishment of a branch of the Hongkong and Shanghai Bank in 1888 during the modernization period of the King Chulalongkorn. In the subsequent year, more European and business banks opened their branches, making foreign banks the dominant players in the local banking industry.In 1906, Siam Commercial Bank became the first Thai bank to be established to counter the dominance of foreign banks. During the World War II, most foreign banks were closed, leading to the opening of several Thai banks to fill the gap, largely to finance trade with Asian countries.The implementation of consecutive economic and social development plans since 1960 resulted in massive investments in infrastructure throughout the country. This leads to the rapid expansion of bank branches in the provinces numbering over 3,000 throughout the country now.After the war, the Royal Thai Government adjusted a protective policy to promote the growth of Thai banks by limiting foreign bank to one branch office. Due to this restriction, foreign banks remain relatively small players in the Thai banking industry, concentrating mostly a wholesale banking markets executing much of their business offshore.

Prior to November 1997, Thai law restricted foreign ownership and control of banks, permitting foreign investors to hold no more than 25 percent of shares sold. This was liberalized in November 1997 to permit 100 percent foreign shareholding for a period of 10 years. After 10 years, they will not be required to divest their shares, but if they hold more than 49 percent of shares sold they are not permitted to acquire any additional shares.