Exhibit 99.1











FORM 11-K





(Mark One)

|☒ | ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | ------------------------------------------------------------------------------

For the fiscal year ended December 31, 2017

OR



|☐ | TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | ----------------------------------------------------------------------------------

For the transition period from
 To

Commission file number 1-10254





TOTAL SYSTEM SERVICES, INC. 2012 EMPLOYEE STOCK PURCHASE PLAN

TOTAL SYSTEM SERVICES, INC.

ONE TSYS WAY

COLUMBUS,
GEORGIA 31901

(706) 644-6081









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TOTAL SYSTEM SERVICES, INC.

2012 EMPLOYEE STOCK PURCHASE PLAN

Financial Statements

December 31, 2017, 2016, and 2015

(With Report of Independent Registered Public Accounting Firm Thereon)



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Report of Independent Registered Public Accounting Firm

The Plan Administrator

Total System Services, Inc.

2012 Employee Stock Purchase Plan:

Opinion on the Financial Statements

We have audited the
accompanying statements of financial condition of the Total System Services, Inc. 2012 Employee Stock Purchase Plan (the Plan) as of December 31, 2017 and 2016, and the related statements of operations and changes in plan equity for each of the
years in the three-year period ended December 31, 2017, and the related notes (collectively, the financial statements). In our opinion, the financial statements present fairly, in all material respects,
the financial condition of the Plan as of December 31, 2017 and 2016, and the results of its operations and changes in its plan equity for each of the years in the three-year period ended
December 31, 2017, in conformity with U.S. generally accepted accounting principles.

Basis for Opinion

These financial statements are the responsibility of the Plans management. Our responsibility is to express an opinion on these financial statements
based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities
laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the
standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing
procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the
amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We
believe that our audits provide a reasonable basis for our opinion.

/s/ KPMG LLP

We have served as the Plans auditor since 2013.

Atlanta,
Georgia

April 16, 2018



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TOTAL SYSTEM SERVICES, INC.

2012 EMPLOYEE STOCK PURCHASE PLAN

Statements of Operations and Changes in Plan Equity

Years ended December 31, 2017, 2016 and 2015



|                                                                                                                                                                               |  |      |            |  |      |  |            |      |  |  |             |  
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |  | ---- | ---------- |  | ---- |  | ---------- | ---- |  |  | ----------- | -
|                                                                                                                                                                               |  | 2017 |            |  | 2016 |  |            | 2015 | 
|Dividend income                                                                                                                                                                |  | $    |           |  |      |  |           |      |  |  | 359,040     |  
|Realized gain on distributions to participants (note 5)                                                                                                                        |  |      |           |  |      |  |           |      |  |  | 44,412,905  |  
|Unrealized (depreciation) appreciation in common stock of Total System Services, Inc. (note
4)                                                                                 |  |      |           |  |      |  |           |      |  |  | (22,579,977 | )
|Contributions:                                                                                                                                                                 |  |      |            |  |      |  |            |      |  |  |             |  
|Participants                                                                                                                                                                   |  |      | 10,650,124 |  |      |  | 10,554,208 |      |  |  | 9,210,057   |  
|Participating employers:                                                                                                                                                       |  |      |            |  |      |  |            |      |  |  |             |  
|Total System Services, Inc.                                                                                                                                                    |  |      | 1,094,650  |  |      |  | 1,080,477  |      |  |  | 975,951     |  
|Columbus Depot Equipment Company                                                                                                                                               |  |      | 1,089      |  |      |  | 97         |      |  |  | 95          |  
|Columbus Productions, Inc.                                                                                                                                                     |  |      | 5,524      |  |      |  | 5,707      |      |  |  | 5,063       |  
|TSYS Canada, Inc.                                                                                                                                                              |  |      | 4,209      |  |      |  | 13,119     |      |  |  | 19,702      |  
|TSYS Acquiring Solutions                                                                                                                                                       |  |      | 120,239    |  |      |  | 122,328    |      |  |  | 121,190     |  
|TSYS Merchant Solutions, LLC                                                                                                                                                   |  |      | 31,076     |  |      |  | 47,296     |      |  |  | 42,821      |  
|TSYS International                                                                                                                                                             |  |      | 87,764     |  |      |  | 119,807    |      |  |  | 123,291     |  
|ProPay                                                                                                                                                                         |  |      | 25,176     |  |      |  | 21,141     |      |  |  | 14,881      |  
|NetSpend                                                                                                                                                                       |  |      | 90,816     |  |      |  | 90,637     |      |  |  | 55,293      |  
|Skylight Financial                                                                                                                                                             |  |      |           |  |      |  |           |      |  |  | 11,367      |  
|TSYS Advisors                                                                                                                                                                  |  |      | 8,863      |  |      |  | 10,563     |      |  |  | 8,870       |  
|Central Payment                                                                                                                                                                |  |      | 4,041      |  |      |  | 2,461      |      |  |  | 2,985       |  
|TSYS Business Solutions (formerly TransFirst)                                                                                                                                  |  |      | 124,259    |  |      |  | 78,674     |      |  |  |            |  
|                                                                                                                                                                               |  |      |            |  |      |  |            |      |  |  |             |  
|Total employer contributions                                                                                                                                                   |  |      | 1,597,706  |  |      |  | 1,592,306  |      |  |  | 1,381,509   |  
|                                                                                                                                                                               |  |      |            |  |      |  |            |      |  |  |             |  
|Total additions                                                                                                                                                                |  |      | 12,247,830 |  |      |  | 12,146,514 |      |  |  | 32,783,534  |  
|Withdrawals by participants  common stock of Total System Services, Inc. at fair market
value (192,918 shares in 2017, 250,061 shares in 2016, and 2,156,632 shares in 2015.) |  |      | 11,721,118 |  |      |  | 12,146,514 |      |  |  | (97,428,946 | )
|                                                                                                                                                                               |  |      |            |  |      |  |            |      |  |  |             |  
|Increase (decrease) in Plan equity for the year                                                                                                                                |  |      | 526,712    |  |      |  |           |      |  |  | (64,645,412 | )
|Plan equity at beginning of year                                                                                                                                               |  |      |           |  |      |  |           |      |  |  | 64,645,412  |  
|                                                                                                                                                                               |  |      |            |  |      |  |            |      |  |  |             |  
|Plan equity at end of year                                                                                                                                                     |  | $    | 526,712    |  |      |  |           |      |  |  |            |  
|                                                                                                                                                                               |  |      |            |  |      |  |            |      |  |  |             |  

See accompanying notes to financial statements



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TOTAL SYSTEM SERVICES, INC.

2012 EMPLOYEE STOCK PURCHASE PLAN

Statements of Financial Condition

December 31, 2017 and 2016



|                                                                                            |  |      |         |  |      |  |   | 
|------------------------------------------------------------------------------------------- |  | ---- | ------- |  | ---- |  | - | 
|                                                                                            |  | 2017 |         |  | 2016 | 
|Assets                                                                                      |  |      |         |  |      |  |   | 
|Cash                                                                                        |  | $    | 526,712 |  |      |  |  | 
|                                                                                            |  |      |         |  |      |  |   | 
|Total assets                                                                                |  | $    | 526,712 |  |      |  |  | 
|                                                                                            |  |      |         |  |      |  |   | 
|Plan Equity                                                                                 |  |      |         |  |      |  |   | 
|Plan Equity                                                                                |  |      |         |  |      |  |   | 
|3,304 active participants and 2,901 actively contributing participants at December 31,
2017 |  |      |         |  |      |  |   | 
|3,426 active participants and 2,880 actively contributing participants at December 31,
2016 |  | $    | 526,712 |  |      |  |  | 
|                                                                                            |  |      |         |  |      |  |   | 

See accompanying notes to financial statements.



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TOTAL SYSTEM SERVICES, INC.

2012 EMPLOYEE STOCK PURCHASE PLAN

Notes to Financial Statements

December 31, 2017, 2016 and 2015



|(1) | Description of the Plan
|--- | -----------------------

On January 31, 2012, the board of directors of Total
System Services, Inc. (TSYS) adopted the Total System Services, Inc. 2012 Employee Stock Purchase Plan (the Plan). The Plan was approved by the TSYS shareholders on May 1, 2012, and became effective as of July 1, 2012. On July 1,
2012, the plan assets of the predecessor plan, the Total System Services, Inc. Employee Stock Purchase Plan, were rolled over into the Plan. The Plan is designed to enable participating Total System Services, Inc. (TSYS) and participating
subsidiaries employees to purchase shares of common stock of TSYS at prevailing market prices from contributions made by them and by TSYS and its subsidiaries (the Participating Employers).

TSYS serves as the Plan Administrator. As of September 1, 2015, the Plan agent is Fidelity Stock Plan Services, LLC, hereafter referred to
as Agent. Prior to September 1, 2015, the Plan agent was ComputerShare Shareowner Services, LLC.

All employees based in
the United States who work 20 hours per week or more are eligible to participate in the Plan on the first payroll date after completing three months of continuous employment. Employees of TSYS or TSYS affiliates who are employed in a
country other than the United States are not eligible to participate in the Plan unless the Plan is registered or qualified in the employees country of residence.

Participants contribute to the Plan through payroll deductions as a percentage of compensation. The maximum allowable contribution ranges from
3% to 7% of compensation based on years of service. The maximum amount of compensation that may be taken into account under the Plan on an annual basis is $250,000. The minimum allowable contribution is 1% of compensation. Matching contributions to
the Plan are to be made by the Participating Employers in an amount equal to 0-50% of each participants contribution, with the percentage of the matching contribution to be set by the TSYS Board of
Directors. As of December 31, 2017 and 2016, the Participating Employers match was 15%. Participants are immediately vested in their contributions and Participating Employers matching contributions.

The Plan provides, among other things, that all expenses of the Plan and its administration shall be paid by TSYS with the exception of
brokers fees, commissions, and transaction costs, which are included in the cost of each participants investment in common stock of TSYS.

The Plan Agent purchases TSYS common stock on behalf of each participant with the participant contributions and company contributions. From
Plan inception through August 31, 2015, TSYS common stock purchased through the Plan was held in the Plan for each participant. Effective September 1, 2015, concurrent with the change in Agent, shares of TSYS common stock purchased on
behalf of Plan participants, or amounts less than the full price of a share, are immediately distributed to each participants personal brokerage account. Dividends are no longer paid to participants through the Plan but are paid within their
brokerage account. Participants may choose dividends paid, or reinvested to purchase additional shares. Accordingly, subsequent to September 1, 2015, there is a zero balance for Plan equity except for when there is a timing difference between year-end contributions and withdrawals.

Within their personal brokerage account, the Plan provides that
all shares must be held for a minimum period of six months, during which the shares cannot be sold, transferred, assigned, pledged, or otherwise disposed of. Subsequent to the six months holding period, the Plan provides that each participant may
withdraw at any time all or some of his or her account balance. The participant may elect to receive the proceeds in the form of shares of common stock of TSYS or in lump-sum cash distributions.



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TOTAL SYSTEM SERVICES, INC.

2012 EMPLOYEE STOCK PURCHASE PLAN

Notes to Financial Statements

December 31, 2017, 2016 and 2015



The Plan provides that upon termination of participation in the Plan, each former participant
will receive, at his or her discretion, (i) the full number of shares of TSYS common stock held on his or her behalf by the Agent, together with a check for any fractional share interest, or (ii) a
lump-sum cash distribution for the proceeds of the sale of all shares held on his or her behalf by the Agent.

Participation in the Plan shall automatically terminate upon termination of a participants employment whether by death, retirement, or
otherwise.

TSYS expects to maintain the Plan indefinitely, but reserves the right to terminate or amend the Plan at any time, provided,
however, that no termination or amendment shall affect or diminish any participants right to the benefit of contributions made by him or her, or his or her Participating Employer prior to the date of such amendment or termination.

TSYS reserves the right to suspend Participating Employer contributions to the Plan if its board of directors feels that TSYS financial
condition warrants such action.



|(2) | Summary of Significant Accounting Policies
|--- | ------------------------------------------

The preparation of financial statements in
conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, and changes therein, and disclosure of contingent assets and
liabilities. Actual results could differ from those estimates.

From Plan inception through August 31, 2015, TSYS common stock
purchased through the Plan was held in the Plan for each participant. The Plans investment in common stock of TSYS was stated at fair value, which was based on the closing price at year-end obtained by
using market quotations on the principal public exchange market for which such securities were traded.

The Plans investment in the
common stock of TSYS was exposed to market and credit risks. Due to the level of risk associated with investment securities, it was at least reasonably possible that changes in the values of investment securities could have occurred in the near term
and that such changes could have materially affect the amounts reported in the Plans financial statements.

The realized gain or loss
on distributions to participants was determined by computing the difference between the average cost per share and the fair value per share at the date of the distribution to the participants, less transaction costs.

Contributions to the Plan by TSYS and participating employees are accounted for on the accrual basis. Withdrawals are accounted for upon
distribution.

Purchases and sales of TSYS common stock were reflected on a trade-date basis.



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TOTAL SYSTEM SERVICES, INC.

2012 EMPLOYEE STOCK PURCHASE PLAN

Notes to Financial Statements

December 31, 2017, 2016 and 2015



|(3) | Tax Status of the Plan
|--- | ----------------------

The Plan is not qualified under Sections 401(a) or 501(a)
of the Internal Revenue Code of 1986, as amended. The Plan does not provide for income taxes because any income is taxable to the participants. Participants in the Plan must treat as compensation income their pro rata share of contributions made to
the Plan by their Participating Employer. Cash dividends paid on common stock of TSYS purchased under the Plan will be taxable to the participants on a pro rata basis for Federal and state income tax purposes during the year any such dividend is
received by the participant or the Plan. Upon disposition of the common stock of TSYS purchased under the Plan, participants must treat any gain or loss as long-term or
short-term capital gain or loss depending upon when such disposition occurs.



|(4) | Unrealized (Depreciation) Appreciation in Common Stock of TSYS
|--- | --------------------------------------------------------------

Changes in unrealized
(depreciation) appreciation in common stock of TSYS are as follows:



|                                               |  |      |   |  |      |  |   |      |  |  |             |  
|---------------------------------------------- |  | ---- | - |  | ---- |  | - | ---- |  |  | ----------- | -
|                                               |  | 2017 |   |  | 2016 |  |   | 2015 | 
|Unrealized appreciation at beginning of period |  | $    |  |  |      |  |  |      |  |  | 22,579,977  |  
|Unrealized appreciation from predecessor plan  |  |      |  |  |      |  |  |      |  |  |            |  
|Unrealized appreciation at end of period       |  |      |  |  |      |  |  |      |  |  |            |  
|                                               |  |      |   |  |      |  |   |      |  |  |             |  
|Total unrealized (depreciation)                |  | $    |  |  |      |  |  |      |  |  | (22,579,977 | )
|                                               |  |      |   |  |      |  |   |      |  |  |             |  



|(5) | Realized Gain on Withdrawals/Distributions to Participants
|--- | ----------------------------------------------------------

The gain realized on
withdrawal/distributions to participants is summarized as follows:



|                                                                                                        |  |      |   |  |      |  |   |      |  |  |            | 
|------------------------------------------------------------------------------------------------------- |  | ---- | - |  | ---- |  | - | ---- |  |  | ---------- | 
|                                                                                                        |  | 2017 |   |  | 2016 |  |   | 2015 | 
|Market value at dates of distribution or redemption of shares of common stock of TSYS                   |  | $    |  |  |      |  |  |      |  |  | 97,428,946 | 
|Less cost (computed on an average cost basis) of shares of common stock of TSYS distributed or
redeemed |  |      |  |  |      |  |  |      |  |  | 53,016,041 | 
|                                                                                                        |  |      |   |  |      |  |   |      |  |  |            | 
|Total realized gain                                                                                     |  | $    |  |  |      |  |  |      |  |  | 44,412,905 | 
|                                                                                                        |  |      |   |  |      |  |   |      |  |  |            | 



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