• Mizuho Financial average operating margin for 2023 was 21.95%, a 11.95% decline from 2022.
• Mizuho Financial average operating margin for 2022 was 24.93%, a 1.71% decline from 2021.
• Mizuho Financial average operating margin for 2021 was 24.51%, a 11.92% 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.