In the 1950s KDB supported the nation's economic rehabilitation by restoration of industrial facilities destroyed during the Korean War.

[3]: 42 In the 1970s KDB solidified the development of Korea, by providing funding to heavy-industry from energy to chemical and export-oriented industries.

Meeting the government's 5-year economic development plan and the initiation of new financial businesses such as security underwriting and corporate bond guarantees.

It also issued Industrial Finance Bonds (IFBs) overseas to create an independent fund, carrying out the role of the primary long-term facility financial institution.

During the 1990s KDB providing comprehensive corporate banking services to support technology-intensive industries including semiconductors.