The total revenue for the second quarter of 2012 was $1.10bn, compared to $1.06bn for the same period a year ago.
Operating income was $259m for the quarter, compared to $251m for the same period prior year.
Processing and services revenue rose to $917m, compared to $884m for the same period last year.
The company signed 109 electronic bill payment clients, 34 debit clients and 136 person-to-person (P2P) clients in the quarter.
Fiserv said that it expects 2012 adjusted earnings per share to be in a range of $5.08 to $5.20, which represents growth of 11 to 14% over $4.58 in 2011.
Fiserv president and CEO Jeffery Yabuki said, "The continuing strength in the sales of our leading channel, payment and account processing solutions is providing strong forward momentum."