Westpac New Zealand is a prominent banking institution and a subsidiary of Westpac Banking Corporation, one of Australia's largest banks. Established in 1861, it has a rich history that began with the Bank of New South Wales opening branches in New Zealand. The bank became Westpac New Zealand in 1982 and was locally incorporated in 2004 to better serve the New Zealand market.

The bank offers a wide range of financial services and products for retail and commercial customers. These include various mortgage options, personal loans, everyday banking accounts, credit and debit cards, insurance services, and foreign exchange solutions. Westpac New Zealand caters to individual consumers, small to medium enterprises, and larger commercial clients, focusing on understanding and supporting their financial goals. The bank is also dedicated to social responsibility, engaging in initiatives that positively impact the community and environment in New Zealand.