• Tetra Tech average operating margin for 2023 was 8.16%, a 14.38% increase from 2022.
• Tetra Tech average operating margin for 2022 was 9.53%, a 8.91% decline from 2021.
• Tetra Tech average operating margin for 2021 was 8.75%, a 21.19% 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.