Referencing the Global Investor Coalition on Climate Change (GIC) and its Low Carbon Registry (LCI), Cathay has established a group-wide definition for low-carbon industries. Investments in low-carbon and green energy sectors include: alternative energy (excluding nuclear, fossil fuels, natural gas, and thermal power), green buildings, waste recycling, transportation, energy saving industry, green bonds, and natural carbon sinks.

CUB Hong Kong Branch receives six awards from the "2024 Hong Kong Green and Sustainable Finance Awards" organized by the Hong Kong Quality Assurance Agency (HKQAA). Awards include one "Outstanding Award for Green and Sustainable Loan Structuring Advisor," two "Leadership Awards for Green and Sustainable Finance Development," and two "Strategist Awards for Green and Sustainable Finance Development," which also made CUB the only Taiwan bank to receive the awards for three consecutive years. CUB Executive VP Michael Wen was a keynote speaker at the concurrent forum, where he shared CUB's experiences in green and sustainable finance.

In 2024, Cathay Life collaborated with Crédit Agricole CIB and other financial institutions to launch its first eight-year investment-linked green bond product with annual dividends - the Cathay Life Investment-linked Insurance. To generate more positive environmental impacts, Cathay Life and Crédit Agricole CIB collaborated with Taiwan's GoodPoint Exchange in 2024 to launch the Taiwan Greenery Project. When specific Cathay Life products reach the equivalent of NZ$100,000 in investments, Crédit Agricole CIB will support local Taiwanese organizations in adopting one tree endemic to Taiwan (sea hibiscus, thatch screwpine, beach cabbage, Indian beech, Oldham silverberry, and bead tree). Crédit Agricole CIB has also pledged that the total funding for this initiative will be no less than the equivalent cost of nurturing 1,000 trees, as part of its commitment to the conservation of trees along the coast of Nan'ao in Yilan.

By combining digital services with ESG principles, Cathay encourages investors to adopt sustainable investment practices. Building on its 2020 collaboration with National Taipei University (NTPU) to provide ESG research services for institutional investors, Cathay Securities introduced ESG-driven stock selection tools for individual investors via its mobile app in 2021. In 2022, it became the first in the industry to launch a dedicated “Sustainability Section” on the Cathay Securities app, enabling users to view ESG ratings for their Taiwan stock holdings. By 2024, the platform had attracted over 500,000 users and recorded over 2 million clicks. Cathay continues to optimize its services annually, striving to deliver digital financial tools that best meet the customer needs.