Fiserv launched its website in 1995 and introduced fully electronic bills (branded as E-bills) in 1997, reaching $1 billion in revenue.

This acquisition put Fiserv into the commercial banking, internal and credit union core account processing market space.

[9] In 2008, Fiserv made an acquisition of Interactive Technologies, Inc., provider of billing software and ancillary products for the banking and investment advisory industries, granting Fiserv control of their "Advantage Fee System" which calculates complex billing for fees and commissions.

[13] Fiserv also acquired The Data Center, a Texas-based item processing company that had been owned by BBVA Compass Bank.

[24] In 2018, Fiserv acquired MoneyPass, surcharge-free debit card and ATM processing network, from Elan Financial Services, a unit of U.S.

[25] In 2019, First Data, a payment processor, was acquired for $22 billion, making it one of the largest acquisitions in the financial technology sector.

In 2021, Fiserv acquired several companies: Ondot Systems, Inc., a digital experience platform for financial institutions;[28][29] NetPay, a payment facilitator;[30] and BentoBox, provider of online restaurant operations.

[33] In October 2023, Fiserv acquired Skytef, the primary distributor of Software Express payment solution SiTef.