Filed by Global Payments Inc.

pursuant to Rule 425 under the Securities Act of 1933

and deemed filed pursuant to Rule 14a-12

under the Securities Exchange Act of 1934

Subject Company: Total System Services, Inc.

Registration No.: 333-232545

Date: August 27, 2019

On August 27, 2019, Jeffrey S. Sloan, Chief Executive Officer of Global Payments Inc. (the “Company”), sent the following email to all employees of the Company:

Dear Colleagues:

As you heard from our recent Employee Update last week, Global Payments and TSYS have made significant progress on our efforts to combine our two companies. We have also been working diligently together over the past months to create a post-close plan for our businesses. And now I’d like to share some more detail with you.

This partnership will unite two leaders in the payments industry with a common vision and pure payments focus. Everything we do as one company will be centered around payments and our related software businesses, with enhanced strength from our complementary corporate cultures. We both put our people first, and the corporate values of each company will be the basis for going forward.

A tremendous amount of work on both sides has gone into achieving the following:

• Received antitrust clearance from the U.S. in June and Canada in July and regulatory clearance from the UK just recently this month.

• Closed on a new investment grade credit agreement on July 9 (that will become effective at closing) and $3 billion of new senior notes on August 14.

• Filed an S-4 proxy statement / prospectus with the SEC that went effective in July. Global Payments and TSYS shareholders of record as of July 22 have been mailed a proxy and are entitled to vote on the merger.

• Established the Executive Steering Committee (ESC) and Integration Management Office with leaders from both organizations who will oversee and manage execution of integration plans.

• Brought functional leaders from both organizations together to review our book of work and collaborate on planning.

Currently, we are looking ahead to:

• Global Payments and TSYS shareholder meetings this Thursday, August 29.

• ESC meeting to discuss progress and functional integration plans also on this Thursday, August 29.

• Regulatory approvals from the European Union (EU) expected in mid-September with a successful closing shortly thereafter.

What can you expect upon closing? Our combined leadership team will work diligently to integrate our people, systems and processes into the new combined entity, Global Payments. We understand there are, and will continue to be, many questions around the integration process. We are committed to thoughtful and transparent communications to all our employees as plans progress and details are finalized after the closing date. One of those communication channels will be via regular email updates, but we also have established a myGPN merger page as a storehouse for merger-related updates. Until closing, we remain business as usual.

With this merger, we expect to achieve our long sought after goal of Fortune 500 status before this decade is out! We look forward to celebrating this exciting milestone in the near future.

Thank you for all you do everyday to help us achieve these milestones. We look forward to communicating more details as appropriate in the coming weeks.

Jeff Sloan

Chief Executive Officer

Forward Looking Statements

Certain of the matters discussed in this communication which are not statements of historical fact constitute forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. These forward-looking statements, which are based on current expectations, estimates and projections about the industry and markets in which TSYS and Global Payments operate and beliefs of and assumptions made by TSYS management and Global Payments management, involve uncertainties that could significantly affect the financial condition, results of operations, business plans and the future performance of TSYS, Global Payments or the combined company. Words such as “believes,” “anticipates,” “expects,” “intends,” “targeted,” “estimates,” “forecasts,” “projects,” “plans,” “may,” “could,” “should,” “would,” and similar expressions are intended to identify forward-looking statements but are not the exclusive means of identifying these statements. Such forward-looking statements include, but are not limited to, statements about the strategic rationale and financial benefits of the transaction, including expected future financial and operating results and the combined company’s plans, objectives, expectations and intentions. All statements that address operating performance, events or developments that we expect or anticipate will occur in the future — including statements relating to projections of revenue, income or loss, earnings or loss per share, the payment or nonpayment of dividends, capital structure and other financial items; statements of plans and objectives of TSYS or Global Payments or their management or Board of Directors, including those relating to products or services; and statements of future economic performance — are forward-looking statements. These statements are not guarantees of future performance and involve certain risks, uncertainties and assumptions that are difficult to predict. Although we believe the expectations reflected in any forward-looking statements are based on reasonable assumptions, we can give no assurance that our expectations will be attained, and therefore actual outcomes and results

may differ materially from what is expressed or forecasted in such forward-looking statements. In addition to factors previously disclosed in TSYS’ and Global Payments’ reports filed with the SEC and those identified elsewhere in this communication, the following factors, among others, could cause actual results to differ materially from forward-looking statements or historical performance: the occurrence of any event, change or other circumstances that could give rise to the right of one or both of TSYS and Global Payments to terminate the merger agreement; the outcome of any legal proceedings that may be instituted against TSYS, Global Payments or their respective directors; the ability to obtain regulatory approvals and meet other closing conditions to the merger on a timely basis or at all, including the risk that regulatory approvals required for the merger are not obtained on a timely basis or at all, or are obtained subject to conditions that are not anticipated or that could adversely affect the combined company or the expected benefits of the transaction; the ability to obtain approval by TSYS shareholders and Global Payments shareholders on the expected terms and schedule; difficulties and delays in integrating the TSYS and Global Payments businesses, including with respect to implementing systems to prevent a material security breach of any internal systems or to successfully manage credit and fraud risks in business units; failing to fully realize anticipated cost savings and other anticipated benefits of the merger when expected or at all; business disruptions from the proposed merger that will harm TSYS’ or Global Payments’ business, including current plans and operations; potential adverse reactions or changes to business relationships resulting from the announcement or completion of the merger, including as it relates to TSYS’ or Global Payments’ ability to successfully renew existing client contracts on favorable terms or at all and obtain new clients; failing to comply with the applicable requirements of Visa, Mastercard or other payment networks or card schemes or changes in those requirements; the ability of TSYS or Global Payments to retain and hire key personnel; the diversion of management’s attention from ongoing business operations; uncertainty as to the long-term value of the common stock of Global Payments following the merger, including the dilution caused by Global Payments’ issuance of additional shares of its common stock in connection with the transaction; the continued availability of capital and financing following the merger; the business, economic and political conditions in the markets in which TSYS and Global Payments operate; the impact of new or changes in current laws, regulations, credit card association rules or other industry standards, including privacy and cybersecurity laws and regulations; and events beyond TSYS’ or Global Payments’ control, such as acts of terrorism.

Any forward-looking statements speak only as of the date of this communication or as of the date they were made, and neither TSYS nor Global Payments undertakes any obligation to update forward-looking statements. For a more detailed discussion of these factors, also see the information under the captions “Risk Factors” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in TSYS’ and Global Payments’ most recent annual reports on Form 10-K for the year ended December 31, 2018, quarterly reports on Form 10-Q for the periods ended March 31, 2019 and June 30, 2019, and any material updates to these factors contained in any of TSYS’ and Global Payments’ future filings.

As for the forward-looking statements that relate to future financial results and other projections, actual results will be different due to the inherent uncertainties of estimates, forecasts and projections and may be better or worse than projected and such differences could be material. Given these uncertainties, you should not place any reliance on these forward-looking statements. Annualized, pro forma, projected and estimated numbers are used for illustrative purpose only, are not forecasts and may not reflect actual results.

Additional Information and Where to Find It

In connection with the proposed merger, Global Payments filed with the SEC a registration statement on Form S-4 to register the shares of Global Payments’ common stock to be issued in connection with the merger on July 23, 2019. The registration statement includes a joint proxy statement/prospectus. Global Payments and TSYS commenced mailing the joint proxy statement/prospectus to shareholders on or about July 25, 2019. INVESTORS AND SECURITY HOLDERS ARE URGED TO READ THE REGISTRATION STATEMENT ON FORM S-4 AND THE RELATED JOINT PROXY STATEMENT/PROSPECTUS INCLUDED WITHIN THE REGISTRATION STATEMENT ON FORM S-4, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THOSE DOCUMENTS AND ANY OTHER RELEVANT DOCUMENTS FILED OR TO BE FILED WITH THE SEC IN CONNECTION WITH THE PROPOSED MERGER, BECAUSE THEY CONTAIN IMPORTANT INFORMATION ABOUT TSYS, GLOBAL PAYMENTS AND THE PROPOSED MERGER.

Investors and security holders may obtain copies of these documents free of charge through the website maintained by the SEC at www.sec.gov or from TSYS at its website, www.tsys.com, or from Global Payments at its website, www.globalpaymentsinc.com. Documents filed with the SEC by TSYS will be available free of charge by accessing TSYS’ website at www.tsys.com under the heading Investor Relations, or, alternatively, by directing a request by telephone or mail to TSYS at One TSYS Way, Columbus, Georgia 31901, and documents filed with the SEC by Global Payments will be available free of charge by accessing Global Payments’ website at www.globalpaymentsinc.com under the heading Investor Relations or, alternatively, by directing a request by telephone or mail to Global Payments at 3550 Lenox Road, Suite 3000 Atlanta, Georgia 30326, Attention: Investor Relations.

Participants In The Solicitation

TSYS and Global Payments and certain of their respective directors and executive officers may be deemed to be participants in the solicitation of proxies from the shareholders of Global Payments and TSYS in respect of the proposed merger under the rules of the SEC. Information about Global Payments’ directors and executive officers is available in Global Payments’ proxy statement dated March 13, 2019 for its 2019 Annual Meeting of Shareholders. Information about TSYS’ directors and executive officers is available in TSYS’ proxy statement dated March 20, 2019 for its 2019 Annual Meeting of Shareholders. Other information regarding the participants in the proxy solicitation and a description of their direct and indirect interests, by security holdings or otherwise, is contained in the joint proxy statement/prospectus referenced above and other relevant

materials to be filed with the SEC regarding the merger when they become available. Investors should read the joint proxy statement/prospectus carefully before making any voting or investment decisions. You may obtain free copies of these documents from Global Payments or TSYS using the sources indicated above.

No Offer Or Solicitation

This communication shall not constitute an offer to sell or the solicitation of an offer to buy any securities, nor shall there be any sale of securities, in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offering of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act.