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Side-by-side financial comparison of Automatic Data Processing (ADP) and CLEAN HARBORS INC (CLH). Click either name above to swap in a different company.

Automatic Data Processing is the larger business by last-quarter revenue ($5.4B vs $1.5B, roughly 3.6× CLEAN HARBORS INC). Automatic Data Processing runs the higher net margin — 19.8% vs 5.8%, a 14.0% gap on every dollar of revenue. On growth, Automatic Data Processing posted the faster year-over-year revenue change (6.2% vs 4.8%). Over the past eight quarters, CLEAN HARBORS INC's revenue compounded faster (4.4% CAGR vs 1.0%).

Automatic Data Processing, Inc. (ADP) is an American multinational provider of cloud-based human resources management, payroll processing, and professional employer organization (PEO) services, headquartered in Roseland, New Jersey.

Clean Harbors, Inc., headquartered in Norwell, Massachusetts, is a provider of waste management and industrial services for commercial customers, specializing in the collection, transportation, treatment and disposal of hazardous waste, but also offering services for non-hazardous waste. The company has 870 operating locations in 630 properties in the U.S. and Canada including a network of over 100 waste disposal facilities such as incinerators, landfills, treatment, storage and disposal faci...

ADP vs CLH — Head-to-Head

Bigger by revenue
ADP
ADP
3.6× larger
ADP
$5.4B
$1.5B
CLH
Growing faster (revenue YoY)
ADP
ADP
+1.4% gap
ADP
6.2%
4.8%
CLH
Higher net margin
ADP
ADP
14.0% more per $
ADP
19.8%
5.8%
CLH
Faster 2-yr revenue CAGR
CLH
CLH
Annualised
CLH
4.4%
1.0%
ADP

Income Statement — Q2 2026 vs Q4 2025

Metric
ADP
ADP
CLH
CLH
Revenue
$5.4B
$1.5B
Net Profit
$1.1B
$86.6M
Gross Margin
46.1%
30.6%
Operating Margin
25.8%
10.6%
Net Margin
19.8%
5.8%
Revenue YoY
6.2%
4.8%
Net Profit YoY
10.3%
3.1%
EPS (diluted)
$2.62
$1.62

Green = leading value per metric. Periods may differ when fiscal calendars don't align.

8-Quarter Revenue & Profit Trend

Side-by-side quarterly history. Quarters aligned by calendar period so offset fiscal years line up.

Revenue
ADP
ADP
CLH
CLH
Q4 25
$5.4B
$1.5B
Q3 25
$5.2B
$1.5B
Q2 25
$5.1B
$1.5B
Q1 25
$5.6B
$1.4B
Q4 24
$5.0B
$1.4B
Q3 24
$4.8B
$1.5B
Q2 24
$4.8B
$1.6B
Q1 24
$5.3B
$1.4B
Net Profit
ADP
ADP
CLH
CLH
Q4 25
$1.1B
$86.6M
Q3 25
$1.0B
$118.8M
Q2 25
$910.7M
$126.9M
Q1 25
$1.2B
$58.7M
Q4 24
$963.2M
$84.0M
Q3 24
$956.3M
$115.2M
Q2 24
$829.3M
$133.3M
Q1 24
$1.2B
$69.8M
Gross Margin
ADP
ADP
CLH
CLH
Q4 25
46.1%
30.6%
Q3 25
45.2%
32.3%
Q2 25
45.1%
33.3%
Q1 25
47.7%
28.6%
Q4 24
45.7%
29.9%
Q3 24
45.5%
31.0%
Q2 24
44.8%
33.3%
Q1 24
47.3%
29.5%
Operating Margin
ADP
ADP
CLH
CLH
Q4 25
25.8%
10.6%
Q3 25
25.3%
12.5%
Q2 25
23.2%
13.6%
Q1 25
29.2%
7.8%
Q4 24
25.0%
9.6%
Q3 24
25.6%
12.6%
Q2 24
22.8%
13.9%
Q1 24
29.4%
9.1%
Net Margin
ADP
ADP
CLH
CLH
Q4 25
19.8%
5.8%
Q3 25
19.6%
7.7%
Q2 25
17.8%
8.2%
Q1 25
22.5%
4.1%
Q4 24
19.1%
5.9%
Q3 24
19.8%
7.5%
Q2 24
17.4%
8.6%
Q1 24
22.6%
5.1%
EPS (diluted)
ADP
ADP
CLH
CLH
Q4 25
$2.62
$1.62
Q3 25
$2.49
$2.21
Q2 25
$2.23
$2.36
Q1 25
$3.06
$1.09
Q4 24
$2.35
$1.55
Q3 24
$2.34
$2.12
Q2 24
$2.01
$2.46
Q1 24
$2.88
$1.29

Balance Sheet & Financial Strength

Snapshot of each company's liquidity, leverage and book value from the latest quarter.

Metric
ADP
ADP
CLH
CLH
Cash + ST InvestmentsLiquidity on hand
$2.5B
$127.4M
Total DebtLower is stronger
Stockholders' EquityBook value
$6.4B
$2.7B
Total Assets
$84.6B
$7.6B
Debt / EquityLower = less leverage

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
ADP
ADP
CLH
CLH
Q4 25
$2.5B
$127.4M
Q3 25
$7.9B
$91.2M
Q2 25
$7.8B
$98.9M
Q1 25
$2.7B
$105.9M
Q4 24
$2.2B
$102.6M
Q3 24
$7.3B
$82.4M
Q2 24
$3.3B
$91.3M
Q1 24
$3.3B
$104.8M
Stockholders' Equity
ADP
ADP
CLH
CLH
Q4 25
$6.4B
$2.7B
Q3 25
$6.4B
$2.8B
Q2 25
$6.2B
$2.7B
Q1 25
$5.9B
$2.6B
Q4 24
$5.1B
$2.6B
Q3 24
$5.3B
$2.5B
Q2 24
$4.5B
$2.4B
Q1 24
$4.6B
$2.3B
Total Assets
ADP
ADP
CLH
CLH
Q4 25
$84.6B
$7.6B
Q3 25
$54.3B
$7.5B
Q2 25
$53.4B
$7.4B
Q1 25
$56.4B
$7.2B
Q4 24
$64.1B
$7.4B
Q3 24
$49.5B
$7.3B
Q2 24
$54.4B
$7.1B
Q1 24
$64.2B
$6.9B

Cash Flow & Capital Efficiency

How much cash each business actually produces after reinvestment. Cash flow is harder to manipulate than net income.

Metric
ADP
ADP
CLH
CLH
Operating Cash FlowLast quarter
$1.1B
$355.1M
Free Cash FlowOCF − Capex
$233.3M
FCF MarginFCF / Revenue
15.6%
Capex IntensityCapex / Revenue
8.1%
Cash ConversionOCF / Net Profit
1.07×
4.10×
TTM Free Cash FlowTrailing 4 quarters
$441.8M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
ADP
ADP
CLH
CLH
Q4 25
$1.1B
$355.1M
Q3 25
$642.3M
$302.0M
Q2 25
$1.4B
$208.0M
Q1 25
$1.5B
$1.6M
Q4 24
$1.2B
$303.9M
Q3 24
$824.4M
$239.2M
Q2 24
$1.3B
$216.0M
Q1 24
$1.5B
$18.5M
Free Cash Flow
ADP
ADP
CLH
CLH
Q4 25
$233.3M
Q3 25
$207.5M
Q2 25
$118.0M
Q1 25
$-117.1M
Q4 24
$241.5M
Q3 24
$142.4M
Q2 24
$80.9M
Q1 24
$-119.4M
FCF Margin
ADP
ADP
CLH
CLH
Q4 25
15.6%
Q3 25
13.4%
Q2 25
7.6%
Q1 25
-8.2%
Q4 24
16.9%
Q3 24
9.3%
Q2 24
5.2%
Q1 24
-8.7%
Capex Intensity
ADP
ADP
CLH
CLH
Q4 25
8.1%
Q3 25
6.1%
Q2 25
5.8%
Q1 25
8.3%
Q4 24
4.4%
Q3 24
6.3%
Q2 24
8.7%
Q1 24
10.0%
Cash Conversion
ADP
ADP
CLH
CLH
Q4 25
1.07×
4.10×
Q3 25
0.63×
2.54×
Q2 25
1.58×
1.64×
Q1 25
1.22×
0.03×
Q4 24
1.19×
3.62×
Q3 24
0.86×
2.08×
Q2 24
1.57×
1.62×
Q1 24
1.26×
0.27×

Financial Flow Comparison

Revenue → gross profit → operating profit → net profit for each company.

Revenue Breakdown by Segment

ADP
ADP

HCM$2.2B42%
PEO Zero Margin Benefits Pass Throughs$1.1B21%
HRO$979.3M18%
Global$709.3M13%
Interest On Funds Held For Clients$308.6M6%

CLH
CLH

Technical Services$479.3M32%
Safetly Kleen Environmental Services$252.9M17%
Fieldand Emergency Response$246.6M16%
Products$205.3M14%
Safety Kleen Sustainability Solutions Segment$188.4M13%
Safety Kleen Oil$132.6M9%

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