BOC Credit Card (International) Limited (BOCI) was established in 1980 and is a wholly-owned subsidiary of BOCHK. All credit cards issued by BOCI are collectively called BOC Credit Cards. BOCI has issued various international credit cards and revolving loan cards, and is now the card issuing and acquiring processing centre for BOCHK and its subsidiary banks (Nanyang Commercial Bank Ltd and Chiyu Banking Corporation Ltd), as well as other institutions and organisations. BOCI plays an important role in the credit card business in the Mainland of China, Hong Kong and Macau.

BOCI provides customers a wide variety of credit card and consumer loans services. Its credit card product family includes the VISA and MasterCard Platinum Card, Titanium Card, Gold Card, Classic Card, Business/Corporate Card, Prepaid Card, Purchasing Card, Co-branded Card (with over 20 co-branding corporations and organisations). Consumer loan products include BOC Express Cash Revolving Credit, BOC Express Cash Instalment Loan, BOC Express Cash Instalment Loan Balance Transfer. It also took the lead in launching the CUP Dual Currency Credit Card in Hong Kong in 2009.