(Watford, England – 13 December 2006) – ACI Worldwide (Nasdaq: TSAI), a leading international provider of enterprise payments solutions, today announced that Wincor Nixdorf has implemented ACI’s BASE24-es® software as a transaction processing system for its end-to-end ATM service.  The new service includes an ATM helpdesk, maintenance, cash and settlement operation and transaction processing. One of the world’s leading providers of IT solutions to retailers and retail banks, Wincor Nixdorf intends to expand the offering to license its managed ATM services across Europe. 

 (Omaha, Neb. – 13 November 2006) – ACI Worldwide (NASDAQ: TSAI), a leading international provider of enterprise payments solutions, today announced that Royal Bank of Canada (RBC) has selected ACI’s Smart Chip Manager™ to provide the foundation for its planned migration to chip technology for debit and credit cards.  RBC chose Smart Chip Manager as its foundation for initial chip card issuance for market trials, beginning with internal trials in late 2007 and as a future platform for launching innovative payment card products using chip technology.

(New York, NY—November 9, 2006)— Transaction Systems Architects, Inc. (Nasdaq: TSAI) (“TSA” or the “Company”) today announced that the Company and Lead Plaintiff have entered into a Stipulation of Settlement for the purposes of settling the previously disclosed consolidated securities class action suit, currently pending in the U.S. District Court for the District of Nebraska. 

(Watford, UK – 8 November 2006) – ACI Worldwide (NASDAQ: TSAI), a leading international provider of software for electronic payment systems, today announced the launch of ACI Proactive Risk ManagerTM Release 7.1, its risk management solution that helps organisations prevent and reduce losses associated with payments fraud.  Designed specifically to improve and automate operational processes, this latest version features automated actions, flexible alert ordering and queuing.  The additional functionality provides fraud departments greater versatility and efficiency, as well as enabling users to prevent and address the fraud more quickly.

(Watford, UK – 2 November, 2006) – ACI Worldwide (NASDAQ: TSAI), a leading international provider of enterprise payment solutions, today announced that Lloyds TSB, one of the UK’s largest banks, will implement an enhanced version of BASE24-es® software that meets the UK’s new Faster Payments Service (FPS) requirements.  BASE24-es for Faster Payments will provide Lloyds TSB with a flexible, feature-rich gateway for linking to the central Faster Payments infrastructure being built by Immediate Payments Limited (the joint venture between LINK and Voca).  The gateway will ease the implementation of Faster Payments by helping Lloyds TSB integrate with its existing payment hub and reduce the overall cost and effort to participate.  As a fully supported product, the solution will be maintained and enhanced by ACI as the scheme changes and mandates emerge. The high volume scalability of BASE24-es and its ability to run on multiple platforms were key reasons behind choosing ACI to provide the FPS gateway.  Lloyds TSB will run the solution on an IBM System z® server.

(OMAHA, Neb.—October 27, 2006) — Transaction Systems Architects, Inc. (Nasdaq: TSAI) (“TSA” or the “Company”) today announced that it is conducting a voluntary review of its historical stock option grants for all periods from 1995 through the present.  The Company’s Audit Committee is overseeing this review, assisted by independent counsel. 

(Omaha, Neb. – 19 October 2006) – ACI Worldwide (NASDAQ: TSAI), a leading international provider of enterprise payment solutions, today announced that the company has been selected as the exclusive supplier of the Travel Document Management System for the Electronic Passport System (e-Passport) of the Immigration Department, Hong Kong. The e-Passport project will leverage ACI Smart Chip Manager™ software to offer the Hong Kong Immigration Department an end-to-end solution for e-passport issuing and lifecycle management – including stock management and post issuance updating.

(Watford, England – 11 October 2006) – ACI Worldwide (Nasdaq: TSAI), a leading international provider of enterprise payment solutions, today announced that the SWIFTAlliance relationship management application (RMA) is fully integrated into its market-leading ACI Wholesale Payments System™.  The software will interact with SWIFT’s RMA to help reduce risk and increase the knowledge of correspondents communicating on SWIFTNet.  This integration demonstrates ACI’s success in achieving compliance with SWIFTNet Phase 2.

(OMAHA, Neb.—September 18, 2006)—Transaction Systems Architects, Inc. (Nasdaq: TSAI)  today announced that the Company will present at the Stephens 2006 Financial Services Technology Field Trip on Wednesday, September 20, 2006 at 10:30 a.m. EDT.  Philip G. Heasley, CEO,  Jeffrey S. Hale, Chief Marketing Officer, and Anthony J. Parkinson, President, ACI Worldwide Americas, will be the guest speakers.

(OMAHA, Neb. – September 13, 2006) – Transaction Systems Architects, Inc. (Nasdaq: TSAI) (“TSA” or the “Company”) today announced the appointment of Henry C. Lyons as Senior Vice President and Chief Financial Officer (CFO).  Mr. Lyons will begin his employment with TSA on September 18, 2006.

(Watford, England – 5 July 2006) – ACI Worldwide (NASDAQ: TSAI), a leading international provider of enterprise payment solutions, today announced that First National Bank (FNB), a division of First Rand Bank Limited, has extended its relationship with ACI for another five years.  An ACI customer in South Africa since 1997, FNB will continue to leverage ACI’s flagship BASE24-atm® and BASE24-pos® payments software to route and switch ATM and POS transactions across its network.  In addition, FNB, the largest merchant acquirer in South Africa, has licensed ACI Proactive Risk Manager to detect and prevent merchant fraud.  The adoption of ACI’s fraud monitoring software was necessary to comply with Visa’s fraud mandate requiring banks to implement an automated risk management solution for acquiring.

(OMAHA, Neb.—June 19, 2006)—Transaction Systems Architects, Inc. (NASDAQ: TSAI), today announced that the Company will present at the William Blair & Company 26th Annual Growth Stock Conference on Thursday, June 29, 2006. Philip G. Heasley, CEO, and Jeffrey S. Hale, Chief Marketing Officer, will be the guest speakers.

Transaction Systems Architects, Inc. (NASDAQ: TSAI), today announced that the Company will present at the Stephens Information Technology and Services Conference on Thursday, June 8, 2006.  Philip G. Heasley, CEO, and Jeffrey S. Hale, Chief Marketing Officer, will be the guest speakers.

(Watford, UK — 17 May 2006) ACI Worldwide (NASDAQ: TSAI), a leading international provider of enterprise payment solutions, today announced the development of an enhanced version of its BASE24-es™ software for banks to meet new Faster Payments requirements in the UK. The solution will provide banks and building societies with a flexible, robust and feature-rich gateway for linking to the central Faster Payments infrastructure being built by LINK and Voca. The gateway will ease the implementation of Faster Payments by helping banks integrate with their existing payment systems and thereby reduce the overall cost and effort to participate.

(OMAHA , NE and FRANKFURT , GERMANY  — MAY 11, 2006) — Transaction Systems Architects, Inc. (Nasdaq: TSAI), provider of ACI Worldwide-branded enterprise electronic payments solutions, and eps Electronic Payment Systems AG (eps), a leading provider of electronic payment systems in Germany and Switzerland, today announced that they have entered into an agreement for TSA to acquire the outstanding common shares of eps for an aggregate purchase price of 28.2 million euros, 17.4 million euros of which will be payable in cash and the balance in the form of TSA common stock.  

(Omaha, Neb. – 4 May, 2006) – ACI Worldwide (NASDAQ: TSAI), a leading international provider of solutions for electronic payments, today announced the results of a payments study conducted with Global Insight, Inc., a leading company for economic and financial analysis and forecasting. The study found that the annual number of electronic payment transactions, currently at approximately 210 billion worldwide, will double by the end of the decade and is growing at a compounded annual rate equal to four times the expected growth in real gross domestic product (GDP). The ACI-sponsored study represents the first comprehensive, econometric approach to forecasting global payments across countries representing 97 percent of the world’s GDP. Its findings provide banks, payment processors and retailers with a road map for the next decade to help plan their payments business strategies.

(Omaha, Neb. – 19 April, 2006) – ACI Worldwide (NASDAQ: TSAI), a leading international provider of software for electronic payment systems, today announced the ACI Wholesale Payments System™ for SEPA, a global payments processing engine that supports processing for prieuro, credeuro and Pan-European direct debits as well as country-specific formats. As banks in Europe prepare to transition to the Single Euro Payments Area (SEPA), ACI Wholesale Payments System offers these institutions high-throughput capabilities in support of SEPA and other global and cross-border ACH requirements, as confirmed by a benchmark study completed by ACI. Having recently hosted an industry workshop to discuss the impact SEPA will have on payment operations in Europe, ACI continues to drive both product innovation and industry dialogue around the SEPA initiative.

(Omaha, Neb. – 12 April 2006) – ACI Worldwide (Nasdaq: TSAI), a leading international provider of enterprise payment solutions, today announced its market-leading ACI Wholesale Payments System™ has received the SWIFTReady Gold accreditation for Payments for the ninth consecutive year. The Gold Label, SWIFT’s highest accreditation, recognizes that the Wholesale Payments System satisfies all SWIFT requirements and is testament to ACI’s continued support and commitment to SWIFT’s standards, products and services.

Omaha, NE—(BUSINESS WIRE)—April 11, 2006— Transaction Systems Architects Inc. ( Nasdaq: TSAI ), will hold its quarterly conference call to discuss second quarter financial results on Tuesday, April 25, 2006 at 5:00 p.m. Eastern Time (4 p.m. Central Time).

(Omaha, Neb. – 21 March 2006) – ACI Worldwide (NASDAQ: TSAI), a leading international provider of enterprise payment solutions, today announced that InfoSend, a leading bill printing, mailing and e-billing company, has integrated ACI e-Courier into its solutions to offer its clients both print-and-mail and multi-channel electronic bill presentment and payment (EBPP) services. In addition, the company is using e-Courier for electronic alerting services for clients both directly and through third-party service providers. With ACI e-Courier, InfoSend offers EBPP services that include multi-channel access, delivery, and payment including secure web-presentment, e-mail alerting, e-mail delivery, and automated or self-directed payment initiation using ACH and cards.

(Omaha, Neb. – 14 March, 2006) – ACI Worldwide (NASDAQ: TSAI), a leading international provider of enterprise payment solutions, today announced the opening of its annual ACI Customer Exchange (ACE) Focus Group, taking place this week in Omaha, Nebraska. The ACE Focus Group is a user-led and directed event that provides ACI customers the opportunity to discuss industry trends, share experiences and shape the direction of ACI’s industry-leading software solutions. More than 100 customers from the Americas will gather to discuss and identify best practices in enterprise payments and examine important topics such as PCI data security standards and fraud management.

(Omaha, Neb. – 21 February 2006) – ACI Worldwide (NASDAQ: TSAI), a leading international provider of enterprise payment solutions, today announced an agreement with Optimisa S.A. to serve as ACI’s distributor within the Chilean market. Optimisa, a systems integrator specialized in critical systems, exemplifies ACI’s commitment to the Chilean market by providing localized distribution and support of ACI’s entire portfolio of world class payment solutions.

(Omaha, Neb. – 23 January 2006) – ACI Worldwide (Nasdaq: TSAI), a leading international provider of enterprise payment solutions, today announced a global partnership with Avada Software LLC. The partnership allows ACI to distribute Avada’s Infared360™ product. Addressing the requirements inherent to IBM WebSphere® MQ (WMQ) environments, Infrared360 is J2EE compliant, agentless technology for the WMQ family of products. Built as a platform independent J2EE web application, Infrared360 enables organizations to better manage their WMQ infrastructure without the need to deploy labor intensive agent software.

Omaha, NE—(BUSINESS WIRE)—January 17, 2006— Transaction Systems Architects Inc. ( Nasdaq: TSAI ), will hold its quarterly conference call to discuss first quarter financial results on Tuesday, January 31, 2006 at 5:00 p.m. Eastern Time (4 p.m. Central Time).

(Omaha, Neb. – 12 January 2006) – ACI Worldwide (NASDAQ: TSAI), a leading international provider of enterprise payment solutions, today announced the availability of the ACI Retail Commerce Server™, the company’s next generation retail solution. Built on years of retail industry experience and customer input, the Retail Commerce Server is an enterprise payment solution that allows merchant retailers to tailor their payment acceptance strategy to maximize profits, manage transaction fees and optimize the customer purchase experience.

(Omaha, Neb. – 3 January 2006) – ACI Worldwide (Nasdaq: TSAI), a leading international provider of enterprise payment solutions, today announced survey results in which nearly three-fourths of business executives said they expect their organization to take steps toward the integration of retail and wholesale (consumer and corporate) payment systems in the next five years. A similar percentage said they expect to operate mission-critical applications on open systems platforms. The responses were gathered by payments software provider ACI Worldwide as part of its annual customer satisfaction survey. ACI clients include many of the world's largest banks, retailers and payment processors.