• Aon average pre-tax profit margin for 2023 was 24.7%, a 13.56% decline from 2022.
• Aon average pre-tax profit margin for 2022 was 21.75%, a 15.75% increase from 2021.
• Aon average pre-tax profit margin for 2021 was 18.79%, a 7.85% increase from 2020.

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