Investor Presentaiton

ADP occupies an enviable position in the market We are the biggest, yet still have significant runway We have been gaining share (and plan to continue doing so) 7% ADP 6% Market $15B ADP Revenue in FY21 5% 4% 3% $150B Addressable Market 2% 1% 0% Market ADP Pre-Pandemic (FY18-19) During Pandemic (FY20-21) Market Growth ADP Growth (Organic Constant Currency¹) Sources: Census, D&B, IHS, Nelson Hall, Cerulli Associates, Internal Financial Reporting 1. Organic Constant Currency is a non-GAAP metric. Refer to Appendix for a reconciliation to its closest comparable GAAP metric Copyright ©2021 ADP, Inc. 10

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