• Discover Financial Services average gross margin for 2023 was 80.49%, a 10.93% decline from 2022.
• Discover Financial Services average gross margin for 2022 was 90.37%, a 0.78% decline from 2021.
• Discover Financial Services average gross margin for 2021 was 89.67%, a 6.98% increase from 2020.

Gross margin can be defined as a company's total sales revenue minus its cost of goods sold, divided by the total sales revenue, expressed as a percentage.