Payroll Software: AI Market Discovery Index

Tracking how AI platforms recommend payroll software. This public AI Market Discovery Index is updated monthly since July 2026.

By Mark Huntley, J.D.Growth Strategist & AI Discovery Analyst

5 minutes read

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01Benchmark Summary
02Current Benchmark at a Glance
03Research Scope and Qualification
04Current Brand Standings
05How to Read the Standings
06Recommendation Coverage Movement
07Largest Increase: Patriot Software
08Largest Decline: ADP
09Category Leader: Gusto
10Recommendation Placement Snapshot
11Buyer-Intent Distribution
12Historical Measurement Record

Benchmark Summary

Gusto led the Payroll Software benchmark in September 2026 with 70.8% valid recommendation coverage, down from 75.9% in July 2026. The gap to the next brand, QuickBooks Payroll, was 7.6 points, with QuickBooks Payroll at 63.2% coverage.

No brand's month-over-month change was large enough to register as a significant movement this period. The benchmark recorded no significant changes between August and September 2026, making this a comparatively quiet month after the substantial repositioning seen in August.

The largest coverage increase over the full baseline-to-current series was Patriot Software, which rose to 53.2% in September 2026 from 39.3% in July 2026, a gain of 13.9 points. The largest coverage decline was ADP, which fell to 0.0% in September 2026 from 70.7% in July 2026.

The tracked company set changed between July and August 2026. ADP, Paychex, Rippling, and Square Online each fell to 0.0% valid recommendation coverage starting in August 2026, while ADP TotalSource, Paychex PEO, Rippling PEO, and Square were newly tracked with 48.8%, 20.7%, 31.2%, and 43.4% coverage respectively. The benchmark cannot distinguish whether this reflects a change in how these entities are tracked or an underlying competitive shift.

The benchmark began with 800 prompt-surface observations in each month and produced 671 qualified observations in September 2026 after qualification.

AI recommendation trend

valid recommendation coverage, Jul 2026 to Sep 2026

Gusto70.8%
QuickBooks Payroll63.2%
Patriot Software53.2%
OnPay51.7%
ADP TotalSource46.4%
Square39.2%
Rippling PEO35.6%
Paychex PEO23.2%
Justworks9.1%
Paycom4.9%
ADP0.0%
Paychex0.0%
Rippling0.0%
Square Online0.0%

Current Benchmark at a Glance

Measure	Jul 2026	Sep 2026	Movement
Qualified benchmark observations	639	671	Up 32
Tracked brands	10	10	No change
Qualified surface breadth	6	6	No change
Recommendation-shaped answer share	48.7%	32.0%	Down 16.7 points
Valid recommendation shortlist share	74.3%	72.7%	Down 1.6 points
Leader by valid recommendation coverage	Gusto	Gusto	No change

Qualified surface breadth counts the number of canonical AI surface families with at least one qualified observation. The six families are ChatGPT, Copilot, Gemini, Perplexity, AI Overviews, and AI Mode. Breadth held at six across all three months.

For the strategic interpretation of this benchmark, read CiteWorks Studio's analysis of How AI Search Is Recommending Payroll Software

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Research Scope and Qualification

The public benchmark is narrower than the raw collection universe by design.

Research stage	Jul 2026	Sep 2026	What it represents
Source prompt-surface observations	800	800	Total prompts collected across AI surfaces
Unique questions	437	481	Distinct questions after deduplication
Brand / competitor mentions	800	800	Prompts mentioning a tracked brand
Relevant observations	794	787	Prompts relevant to the vertical
Irrelevant observations	6	13	Prompts outside the vertical
Qualified benchmark observations	639	671	Public denominator after reservation

Brand-level percentages use the qualified observations as the public denominator, not the raw collection. AI Market Discovery Methodology

Current Brand Standings

Brand	Presence rate	Valid recommendation coverage	Top-three rate	Rank-one rate	Net sentiment
Gusto	96.3%	70.8%	64.5%	57.5%	0.78
QuickBooks Payroll	85.4%	63.2%	45.2%	1.5%	0.79
Patriot Software	62.7%	53.2%	22.8%	4.8%	0.89
OnPay	68.8%	51.7%	22.4%	0.4%	0.79
ADP TotalSource	62.4%	46.4%	18.9%	3.9%	0.80
Rippling PEO	44.7%	35.6%	9.8%	0.4%	0.86
Square	52.8%	39.2%	7.4%	0.6%	0.77
Paychex PEO	35.9%	23.2%	5.4%	0.0%	0.74
Justworks	18.2%	9.1%	3.6%	1.0%	0.59
Paycom	10.3%	4.9%	0.6%	0.1%	0.57

How to Read the Standings

Presence rate: Share of qualified observations where the brand is mentioned at all.
Valid recommendation coverage: Share of qualified observations where the brand appears in a valid recommendation shortlist.
Top-three rate: Share of qualified observations where the brand appears among the top three recommended options.
Rank-one rate: Share of qualified observations where the brand is the single top recommendation.
Net sentiment: Positive minus negative sentiment among brand mentions, on a scale from -1 to 1.

For formulas and denominator rules, see AI Market Discovery Metric Definitions.

Recommendation Coverage Movement

Brand	Jul 2026	Sep 2026	Movement since baseline
ADP	70.7%	0.0%	Down 70.7 points
ADP TotalSource	0.0%	46.4%	Up 46.4 points
Gusto	75.9%	70.8%	Down 5.1 points
Justworks	8.8%	9.1%	Up 0.3 points
OnPay	55.6%	51.7%	Down 3.9 points
Patriot Software	39.3%	53.2%	Up 13.9 points
Paychex	38.0%	0.0%	Down 38.0 points
Paychex PEO	0.0%	23.2%	Up 23.2 points
Paycom	7.2%	4.9%	Down 2.3 points
QuickBooks Payroll	67.0%	63.2%	Down 3.8 points
Rippling	56.6%	0.0%	Down 56.6 points
Rippling PEO	0.0%	35.6%	Up 35.6 points
Square	0.0%	39.2%	Up 39.2 points
Square Online	27.1%	0.0%	Down 27.1 points

Largest Increase: Patriot Software

Patriot Software rose to 53.2% valid recommendation coverage in September 2026 from 39.3% in July 2026, an increase of 13.9 points, and gained in each of the months since baseline. The brand's top-three rate climbed to 22.8% in September 2026 from 7.5% in July 2026, and its rank-one rate rose to 4.8% from 0.8%. Net sentiment was 0.89 in September 2026.

Largest Decline: ADP

ADP fell to 0.0% valid recommendation coverage in September 2026 from 70.7% in July 2026. The decline coincides with the appearance of ADP TotalSource as a separately tracked entity beginning in August 2026.

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Category Leader: Gusto

Gusto led the benchmark with 70.8% valid recommendation coverage in September 2026, down from 75.9% in July 2026, a decline of 5.1 points, and down in each of the two months since baseline. Presence stood at 96.3% in September 2026. Gusto's top-three rate was 64.5% and its rank-one rate was 57.5% in September 2026.

Recommendation Placement Snapshot

Coverage alone does not show how prominently a brand is recommended. Among the leading brands, placement patterns differed notably.

Brand	Sep 2026 top-three rate	Sep 2026 rank-one rate	Jul 2026 top-three rate	Jul 2026 rank-one rate
Gusto	64.5%	57.5%	66.3%	57.1%
QuickBooks Payroll	45.2%	1.5%	32.2%	1.2%
Patriot Software	22.8%	4.8%	7.5%	0.8%

Close coverage can still hide different first-position rates. QuickBooks Payroll's 63.2% coverage produced a 1.5% rank-one rate, while Gusto's 70.8% coverage delivered a 57.5% rank-one rate.

Buyer-Intent Distribution

All qualified observations in both months fell into the brand recommendation class of discovery.

Buyer-intent class	Jul 2026	Sep 2026
Brand Recommendation	639	671
Pricing & Value	0	0
Multi-Brand Comparison	0	0
Total qualified observations	639	671

The current public series measures brand recommendation discovery and does not yet contain qualified observations in the pricing and value or multi-brand comparison classes.

Historical Measurement Record

This is an evergreen benchmark URL. New measurements are added to the same report.

Measurement	Qualified observations	Coverage leader	Leader coverage	Largest coverage movement
Jul 2026	639	Gusto	75.9%	Baseline month (no prior comparison)
Aug 2026	680	Gusto	70.9%	ADP, Down 70.7 points
Sep 2026	671	Gusto	70.8%	ADP, Down 70.7 points

Evidence and Source Layer

The benchmark is built from prompt-level observations that retain the query, AI/search surface, answer, brand outcome, recommendation placement, sentiment, and, where exposed, citations or attributable evidence sources. Source presence is evidence about the information environment. It is not automatically proof that the source caused the recommendation.

Scope Boundaries

This public benchmark does not measure market share, attributable sales, every possible AI response, organic-search ranking, social mention volume, or private and sponsored channels. A movement in a metric alone does not establish causality.

About This Benchmark

The LLM Authority Index AI Market Discovery Index tracks how AI and search surfaces present and recommend brands across a vertical, using a reproducible prompt-level methodology.

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The public industry benchmark shows category-level standings. A company-level Authority Index can go deeper.

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