Discover Financial Services' GAAP net income for 2021 was $5.449 billion, up 4.8 times from $1.141 billion the previous year. Net interest income rose 3% to $9.517 billion, up from $9.23 billion a year earlier.
Discover Financial Services' GAAP net income for 2021 was $5.449 billion, up 4.8 times from $1.141 billion the previous year. Net interest income rose 3% to $9.517 billion, up from $9.23 billion a year earlier. 
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