Press Release

ACI Worldwide, Inc. To Release Third Quarter 2009 Financial Results

October 22, 2009
ACI Worldwide, Inc. To Release Third Quarter 2009 Financial Results

There will be a replay available for two weeks on (800) 642-1687 for US/Canada Dial-In and (706) 645- 9291 for International/Local Dial-In participants.

About ACI Worldwide, Inc.

ACI Worldwide is a leading provider of electronic payments software and services to major banks, retailers and processors around the world. The company enables online payment processing, online banking, fraud prevention and detection, and back-office services. ACI solutions provide market-leading levels of reliability, manageability and scale, to more than 700 customers in 92 countries. Visit ACI Worldwide at www.aciworldwide.com.

Investor Contacts

John Kraft, Head of Strategy & Finance
Email: john.kraft@aciworldwide.com

Global Headquarters:
ACI Worldwide
2811 Ponce de Leon Blvd, PH1
Coral Gables, FL 33134