Comparison

AUTOMATIC DATA PROCESSING INC (ADP) vs PAYCHEX INC (PAYX)

The same filed metrics for both companies, side by side.

What each names as a risk in its own annual report, how each is priced against its own history, and the tracked managers whose latest 13F reports a position in both.

Financials

ADP

AUTOMATIC DATA PROCESSING INC

Staffing & Employment Services

Revenue, FY26: $21.95B
Net income: $4.41B
Operating cash flow: $5.44B
Free cash flow: -
Net margin: 20.11%
Operating margin: -
Gross margin: 46.42%

PAYX

PAYCHEX INC

Staffing & Employment Services

Revenue, FY26: $6.51B
Net income: $1.76B
Operating cash flow: $2.56B
Free cash flow: $2.32B
Net margin: 27.03%
Operating margin: 38.55%
Gross margin: 74.29%

Head-to-head

Filed growth, quality and valuation, read against each company’s own history rather than against the other side.

Metric	ADP	PAYX
Revenue growth, latest filed year	+6.74%	+16.88%
Piotroski F-score	6 of 9	7 of 9
P/E against its own history	11.68% below	18.06% below

What each says it is exposed to

From Item 1A of each company’s most recent 10-K.

ADP

Cybersecurity
Litigation
Data privacy
Tax
Export controls
AI and its regulation

And 9 more.

PAYX

Debt covenants
Litigation
Cybersecurity
AI and its regulation
Data privacy
Export controls

And 10 more.

Tracked managers holding both

Joel Greenblatt Gotham Asset Management 0.16% · 0.17%

Updated Sep 4, 2026 · the newer of the two companies' filings