• United Microelectronics average pre-tax profit margin for 2023 was 36.06%, a 3.71% decline from 2022.
• United Microelectronics average pre-tax profit margin for 2022 was 34.77%, a 54.46% increase from 2021.
• United Microelectronics average pre-tax profit margin for 2021 was 22.51%, a 164.51% increase from 2020.

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