• Canadian National Railway average pre-tax profit margin for 2023 was 39.4%, a 4.44% decline from 2022.
• Canadian National Railway average pre-tax profit margin for 2022 was 41.23%, a 4.72% decline from 2021.
• Canadian National Railway average pre-tax profit margin for 2021 was 39.37%, a 16.93% increase from 2020.

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