Thanachart Capital Public Company Limited, formerly named as National Finance Public Company Limited, originally registered as "Lee Kwang Min Trust Company Limited" on November 17, 1959. The Company was approved by the Ministry of Finance to operate finance and securities business in 1974. The Company has been a member number 16 of the Stock exchange of Thailand (SET) since 1979, and been listed on the SET in 1982.

1998
The Ministry of Finance announced a policy to encourage a consolidation among finance companies by offering a Restricted Banking License, to replace a Super Finance License announced earlier by the government.

Following to the policy, the Company applied to the Bank of Thailand for a Restricted Banking License by using Ekachart Finance Public Company Limited as a core company to set up Thanachart Bank in 1999. After that, in 2002, the Ministry of Finance finally granted the restricted banking license to Ekachart. To receive the License, Ekachart returned its Finance Business License back to the authority, and changed its name to Thanachart Bank Public Company Limited.

2004
Thanachart Bank Public Company Limited was awarded a Full Commercial Banking License. In this year, the Bank of Thailand and the Ministry of Finance introduced a number of measures aimed at enhancing the efficiency of the financial system by rationalizing the structure and roles of financial institutions under the Financial sector Master Plan. Thanachart Capital and Thanachart Bank submitted their reorganization plan in compliance with the One Presence Policy.

2005
The Ministry of Finance gave the approval to the Group’s reorganization plan in line with the One Presence Policy of the Financial Sector Master Plan. The Company, then, transferred its hire purchase business operation with the Company keeping the existing hire purchase customers who continue making their payments until the last installment is paid while Thanachart Bank Public Company Limited giving hire purchase loans to new customers. For transactions related to deposit taking and lending, all of them were completely transferred to Thanachart Bank in this year. As a result, Thanachart Bank has been the Group’s only financial institution that has been engaged in banking business and taking deposits from the public. In the following year, the Company returned its finance business license to the Ministry of Finance and has become a holding company of a financial business conglomerate under the Bank of Thailand’s Consolidated Supervision.

2007
The Company has disposed its investments in 8 subsidiaries, which have been engaging in both financial business and supporting business to Thanachart Bank in order to comply with the Group’s reorganization plan in line with the Consolidated Supervision. At the same time, the Bank of Nova Scotia (BNS) has become the Group’s strategic partner participating in managing the business for enhancing the competitiveness of Thanachart Group by holding 24.98% of Thanachart Bank shares.

2008
The Bank of Thailand approved BNS to hold the additional shares of Thanachart Bank by purchasing the existing shares of Thanachart Bank from the Company. In this regard, the aggregate number of shares held by foreign shareholders including the existing ordinary shares held by BNS and other foreign shareholding must not be exceeding 49 percent of the total paid-up shares of Thanachart Bank. Later, on February 3, 2009, the Company sold its existing ordinary shares of Thanachart Bank to BNS. This transaction made BNS holds 48.99% of Thanachart Bank while the Company holds 50.92%.

2010
On 9 April 2010, Thanachart Bank completed the purchase of 47.58% of total Siam City Bank’s issued and paid-up shares held by the Financial Institutions Development Fund. In June and November 2010, Thanachart Bank conducted tender offers to buy additional shares of Siam City Bank from general public shareholders. Consequently, Thanachart Bank’s shareholding was 99.95% of Siam City Bank’s total issued and paid-up shares.

2011
Thanachart Group successfully implemented its merger with Siam City Bank in accordance with the established corporate plan. In particular, Siam City Bank transferred all its business, called the Entire Business Transfer: EBT, to Thanachart Bank on 1 October 2011. As a result, Thanachart Bank became one of the country’s top commercial banks and had larger assets size and customer base with more suitable loans and deposits composition. It also provided financial products and services through its extensive branch network and ATMs nationwide. This merger represented an important foundation for enhancing Thanachart Group’s future business potential.

2012
After the successful in transferring business from Siam City Bank to Thanachart Bank, Thanachart Group has put a strong emphasis on building the solid foundation for strength in areas such as training, human resource development, branch renovation, improvement on IT as well as servicing and working process, to enhance its competitiveness, support future business growth, and better fulfill every need of customers under the strategy of Transformation to Strength and realizing synergies.

2013
On 3 May 2013, TBANK and Prudential Life Assurance signed an Exclusive Bancassuance Agreement for recommending life insurance products and services through TBANK’s branches for 15 years. TBANK sold common shares of Thanachart Life Assurance in a total of 328,500,000 shares or 100 percent of all paid-up shares. Prudential Life Assurance purchased shares in the amount of 17,500 million baht.

Thanachart Capital provides fully integrated financial services and closely monitors the operations of all member companies of the Group under the good corporate governance, aiming to avoid conflicts of interest at all levels of work.