Q3 2023 Earnings Presentation November 2, 2023 Exhibit 99.2

This presentation contains forward-looking statements based on current expectations that involve a number of risks and uncertainties. Private Securities Litigation Reform Act of 1995 Safe Harbor for Forward-Looking Statements 2

3 ACI Delivers Mission-Critical Payment Solutions ACI Worldwide is a global leader in mission-critical, real-time payments software.

Q3 2023 Highlights 4 Balance SheetSegment ResultsConsolidated Results

Financial Guidance 5 2023 Guidance Range Implied Growth RateHighLow 2022 ProformaFX ImpactDeduct COB*2022 Actual 4-6%1,466 1,436 1,385 (5)(32)1,422 Revenue 6-10%395 380 359 -(14)373 Adjusted EBITDA $'s in millions Foreign currency rates as of 12/31/22 * Proforma for the sale of the Corporate Online Banking business on September 1, 2022

Supplemental Financial Data 6 Nine Months Ended September 30,Three Months Ended September 30, 2022202320222023Recurring Revenue (millions) $ 597.1$ 626.0$ 195.5$ 211.4SaaS and PaaS fees 151.1153.449.251.9Maintenance fees $ 748.2$ 779.4$ 244.7$ 263.3Recurring Revenue TTM Ended September 30,Three Months Ended September 30, 2022202320222023Annual Recurring Revenue (ARR) Bookings (millions) $ 93.0$ 84.9$ 30.3$ 20.5ARR Bookings

Supplemental Financial Data 7 Nine Months Ended September 30,Three Months Ended September 30, 2022202320222023Adjusted EBITDA (millions) $ 51.9$ (1.1)$ 23.1$ 37.9Net income (loss) Plus: 21.7(5.4)10.68.7Income tax expense (benefit) 27.848.211.316.4Net interest expense (45.8)6.4(41.4)(1.1)Net other income (expense) 17.118.76.05.6Depreciation expense 78.874.726.124.8Amortization expense 21.917.57.16.8Non-cash stock-based compensation expense $ 173.4$ 159.0$ 42.8$ 99.1Adjusted EBITDA before significant transaction-related expenses Significant transaction-related expenses: —19.7—3.8Cost reduction strategies 3.42.61.70.4European datacenter migration 2.64.41.20.1Other $ 179.4$ 185.7$ 45.7$ 103.4Adjusted EBITDA Revenue, net of interchange $ 970.1$ 976.0$ 306.6$ 363.0Revenue 295.4315.098.4102.7Interchange $ 674.7$ 661.0$ 208.2$ 260.3Revenue, net of interchange 27 %28 %22 %40 %Net Adjusted EBITDA Margin

Supplemental Financial Data 8 Nine Months Ended September 30,Three Months Ended September 30, 2022202320222023Segment Information (millions) Revenue $ 391.6$ 361.2$ 117.5$ 155.7Banks 113.1107.635.636.3Merchants 465.4507.2153.5171.0Billers $ 970.1$ 976.0$ 306.6$ 363.0Total Revenue Recurring Revenue $ 179.3$ 171.2$ 57.3$ 58.2Banks 103.5101.033.834.1Merchants 465.4507.2153.6171.0Billers $ 748.2$ 779.4$ 244.7$ 263.3Total Segment Adjusted EBITDA $ 184.7$ 167.3$ 49.8$ 91.0Banks $ 32.2$ 26.8$ 9.8$ 10.3Merchants $ 81.0$ 100.1$ 26.3$ 39.2Billers

Supplemental Financial Data 9 Three Months Ended September 30, EPS Impact of Non-cash and Significant Transaction-related Items (millions) 20222023 $ in Millions (Net of Tax)EPS Impact $ in Millions (Net of Tax)EPS Impact $ 23.1$ 0.20$ 37.9$ 0.35GAAP net income (loss) Adjusted for: (29.2)(0.26)——Gain on divestiture 2.20.023.30.03Significant transaction-related expenses 6.70.066.40.06Amortization of acquisition-related intangibles 4.50.043.80.03Amortization of acquisition-related software 5.40.055.20.05Non-cash stock-based compensation (10.4)(0.09)18.70.17Total adjustments $ 12.7$ 0.11$ 56.6$ 0.52 Diluted EPS adjusted for non-cash and significant transaction- related items Nine Months Ended September 30, 20222023 $ in Millions (Net of Tax)EPS Impact $ in Millions (Net of Tax)EPS Impact $ 51.9$ 0.45$ (1.1)$ (0.01)GAAP net income (loss) Adjusted for: (29.2)(0.25)——Gain on divestiture 4.70.0420.40.19Significant transaction-related expenses 20.60.1819.30.18Amortization of acquisition-related intangibles 14.10.1212.00.11Amortization of acquisition-related software 16.60.1413.30.12Non-cash stock-based compensation 26.80.2365.00.60Total adjustments $ 78.7$ 0.68$ 63.9$ 0.59 Diluted EPS adjusted for non-cash and significant transaction- related items

• • • • • Non-GAAP Financial Measures 10

Forward Looking Statements 11

12