• Clean Harbors average pre-tax profit margin for 2023 was 9.78%, a 7.47% decline from 2022.
• Clean Harbors average pre-tax profit margin for 2022 was 9.1%, a 32.65% increase from 2021.
• Clean Harbors average pre-tax profit margin for 2021 was 6.86%, a 37.75% increase from 2020.

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