FISERV INC revenue for the last year amounted to 15.19 B CHF, the most of which — 6.85 B CHF — came from its highest performing source at the moment, Acceptance, the year earlier bringing 6.74 B CHF. The greatest contribution to the revenue figure was made by United States — last year it brought FISERV INC 13.66 B CHF, and the year before that — 14.11 B CHF.