Exhibit 99.3 2Q23 Financial Results July 19, 2023 ©2023 DISCOVER FINANCIAL SERVICES Notice The following slides are part of a presentation by Discover Financial Services (the "Company") in connection with reporting quarterly financial results and are intended to be viewed as part of that presentation. No representation is made that the information in these slides is complete. For additional financial, statistical, and business related information, as well as information regarding business and segment trends ...