Located at 1 Prince Street, IBC was primarily involved in the trade financing of Malayan rubber and tin exports in the early 20th century.

Citibank established its Global Consumer Banking division in 1982 to cater to the needs of individuals and small businesses.

In the early 1990s, it created Singapore's first telephone banking service which was staffed 24 hours a day by CitiPhone officers.

Called Citibank Instant Cash, the scheme allows customers who hold an International Citicard with the Visa point-of-sale debit feature to withdraw funds from their Citibank accounts when making purchase payments at retail locations.

Citibank Business Singapore has 3 mini branches for Citigold clients, 1 main branch at Jurong East and 37 ATMs islandwide[10] 2006- CitiBusiness Singapore enhanced its SME offerings by introducing services and products that were traditionally only offered by banks to larger corporations.

As part of its CSR, CitiBusiness Singapore is the main sponsor for the Singapore Prestige Brand Award (SPBA),[11] which is organised by the Association of Small and Medium Enterprises (ASME) and Lianhe Zaobao, a Chinese language newspaper.