Press Release

TSA To Present At DA Davidson and Co 8th Annual Financial Services Conference

May 1, 2006
TSA To Present At DA Davidson and Co 8th Annual Financial Services Conference

The presentation will be web cast by Wall Street Webcasting at 9 am PDT and interested persons may access a real-time broadcast at: http://www.wsw.com/webcast/dadco6/tsai/

Notes to editors

About Transaction Systems Architects, Inc.
The Company’s software facilitates electronic payments by providing consumers and companies access to their money.  Its products are used to process transactions involving credit cards, debit cards, secure electronic commerce, mobile commerce, smart cards, secure electronic document delivery and payment, checks, high-value money transfers, bulk payment clearing and settlement, and enterprise e-infrastructure.  The Company’s solutions are used on more than 1,960 product systems in 83 countries on six continents.

Investor contacts

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

Global headquarters:
ACI Worldwide
6060 Coverntry Drive
Elkhorn, NE 68022