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The 2026 Mid-Market CPA Firm AI Benchmark.

A 200-firm benchmark of AI adoption and ROI in mid-market CPA firms ($8M-$50M revenue, 30-150 pros). Segmented by firm size band, technology stack (CCH Axcess, UltraTax, ProSystem fx, Karbon), and workflow. Surveying open through Q3 2026; full report ships in October.

Sample target200 firms · 30-150 pros each
Field periodMay - August 2026
Report shipsOctober 2026 · pre-extension
CostFree

Why this report.

Karbon's State of AI in Accounting is excellent vendor-marketing content, calibrated for the average firm. The mid-market firm with 30 to 150 professionals is not the average. The questions a managing partner of a $24M firm needs answered (how does my firm rank by size band? by tax-software stack? by workflow? what ROI did peers in my band actually realize?) are not the questions a vendor-funded report is structured to answer.

This benchmark fills the gap. 200 mid-market firms, surveyed by an independent boutique, segmented by firm size band and stack. The result will be the canonical reference for mid-market CPA AI adoption and ROI through the 2027 fiscal year.

What the report will cover.

I. AI adoption rates by firm size band.

Adoption of AI tools (off-the-shelf, custom, internal builds) across three size bands: $8M-$15M, $15M-$30M, $30M-$50M. Workflow-by-workflow: tax-return prep, review, PBC chase, advisory, audit fieldwork, client communication, internal knowledge.

II. ROI realization, segmented and audited.

For firms reporting AI tool deployment, what hours-back, dollar-impact, or workflow-improvement they actually measured against pre-deployment baselines. Self-reported, but with a follow-up validation pass on a 25-firm subset.

III. Stack effects: CCH Axcess vs UltraTax vs ProSystem fx vs Karbon.

How adoption rates and ROI vary by primary tax-prep stack. Vendor AI roadmap maturity vs custom AI deployment across each stack.

IV. The custom-build vs off-the-shelf split.

Firms that have commissioned custom AI builds vs firms that have deployed off-the-shelf only. ROI differential, deployment time, adoption persistence at 12 months.

V. The leakage map.

Workflow-by-workflow ranking of where mid-market firms most consistently leak partner hours and where AI is most consistently recovering them. Calibrated against our forty audited firms in this size band.

How to participate.

If you're a managing partner, COO, or firm administrator at a $8M-$50M CPA firm and want to receive the full report when it ships, plus a personalized firm-level benchmark against the cohort, the path is the survey. 12 minutes, 38 questions, fully confidential. Firm-level benchmarks delivered via PDF in October.

The survey instrument opens in late May. Sign up below to be notified when it goes live.

Or skip the report

Run your firm's teardown now.

The 8-minute Tax Season Hours Teardown plus the self-audit PDF. Free, on demand, no waiting for the report.

Watch the teardown → Read the industry brief →

About this report

ColabContent reports are research-grade analyses of AI implementation patterns drawn from our commission work and proprietary benchmark data. Each report is reviewed quarterly and updated when material findings change.

Methodology: data is collected from active commissions where the client has consented to anonymous benchmarking, supplemented by published industry data sources where appropriate. Sample sizes and methodology details are noted within each section. Outliers are reviewed manually and excluded with explicit reasoning where they would distort aggregate findings.

About ColabContent: a private AI consulting house in Boston, MA. We commission custom AI for growth-stage businesses ($20M-$200M revenue). Four commissions per quarter. To inquire about a custom commission or sponsor a research engagement, book a 45-minute diagnosis on the contact page.

Citation: cite this report by its title and URL with attribution to ColabContent. We track citations and appreciate links back from research, journalism, and operator content.