CIMB Thai Bank Public Company Limited, previously known as Bank Thai Public Company Limited, was established in 1998 with the Financial Institutions Development Fund (FIDF) as the major shareholder. On 5 November 2008, CIMB Bank Berhad became the largest shareholder in BankThai and on 4 May 2009, the Bank completed the registration of its new name: "ธนาคาร ซีไอเอ็มบี ไทย จำกัด (มหาชน)" in Thai and "CIMB Thai Bank Public Company Limited" in English. This name change reflects the transition of BankThai from being an independent company to becoming a member of the CIMB Group.
CIMB Group is Malaysia's second largest financial services provider and one of ASEAN's leading universal banking groups. It offers consumer banking, investment banking, Islamic banking, asset management and insurance products and services. Headquartered in Kuala Lumpur, the Group is now present in eight out of 10 ASEAN nations (Malaysia, Indonesia, Thailand, Singapore, Cambodia, Brunei, Vietnam and Myanmar). Beyond ASEAN, the Group has offices in India, Hong Kong, Bahrain, London and New York, as well as a 19.99% stake in Bank of Yingkou, China.
CIMB Group operates its business through three main brand entities, CIMB Bank, CIMB Investment Bank and CIMB Islamic. CIMB Group is also the 97.94% shareholder of Bank CIMB Niaga in Indonesia, and the 93.71% shareholder of CIMB Thai in Thailand.
CIMB Group is listed on Bursa Malaysia via CIMB Group Holdings Berhad. It has a market capitalisation of approximately USD18.6 billion as at 31 December 2012. The Group has over 42,000 employees located in 17 countries.