• Chunghwa Telecom average operating margin for 2023 was 21.25%, a 1.44% decline from 2022.
• Chunghwa Telecom average operating margin for 2022 was 21.56%, a 3.16% decline from 2021.
• Chunghwa Telecom average operating margin for 2021 was 20.9%, a 2.9% increase from 2020.

Operating margin can be defined as operating margin measurement of what proportion of a company's revenue is left over after paying for variable costs of production such as wages, raw materials, etc.