The bank was founded in January 1971[1] in Bangkok with 17,000 million baht in funds, and has grown to 52 branches.

It was listed on the Stock Exchange of Thailand in August 1988[1] and is included in the SET50 Index.

[2] Kiatnakin was founded in 1971 as a financial services company, and grew steadily until the recession of the late-1990s forced a suspension of operations.

[3] In December 2011, Kiatnakin Bank and Phatra Capital amalgamated to form a new organization with a $1 billion valuation.

[4] Kiatnakin Securities is a subsidiary company of the bank, and in 2008 the company established a new wholly owned subsidiary, Erawan Law Office.