• Charles River Laboratories average pre-tax profit margin for 2023 was 14.88%, a 0.61% decline from 2022.
• Charles River Laboratories average pre-tax profit margin for 2022 was 14.79%, a 1.86% increase from 2021.
• Charles River Laboratories average pre-tax profit margin for 2021 was 14.52%, a 13.79% increase from 2020.

Pre-tax profit margin can be defined as earnings before taxes as a portion of total revenue.