• Costco average net profit margin for 2024 was 2.85%, a 9.62% increase from 2023.
• Costco average net profit margin for 2023 was 2.6%, a 0.39% increase from 2022.
• Costco average net profit margin for 2022 was 2.59%, a 2.78% increase from 2021.

Net profit margin can be defined as net Income as a portion of total sales revenue.