Discover Financial Services revenue for the last year amounted to 15.87 B USD, the most of which — 15.41 B USD — came from its highest performing source at the moment, Digital Banking, the year earlier bringing 13.16 B USD. The greatest contribution to the revenue figure was made by United States — last year it brought Discover Financial Services 15.86 B USD, and the year before that — 13.34 B USD.