• AI visibility

Guide · AI search

How can a CPA or tax firm win better clients through AI search?

By becoming the firm AI assistants clearly associate with a specific kind of client, service and place. The first studies of AI answers about accounting firms find a small group of very large firms named most of the time, yet several smaller firms beat their size because the web ties them firmly to an industry, a region or a problem. For a firm that is already at capacity, that matters less for volume than for winning the clients it actually wants.

By Underneath Team Guide Updated

The short version

  1. Referrals still win most clients: in TaxDome’s 2025 survey of 350 US businesses, 57% found their current accountant through a peer referral (opens in a new tab) and only 3% through advertising.
  2. Tax questions are moving into chat: OpenAI said tax-related ChatGPT searches in the first quarter of 2026 were four times (opens in a new tab) those of the first quarter of 2025.
  3. AI answers about firms are concentrated: in one study reported by Accounting Today (opens in a new tab), 25 firms took 87.2% of all mentions across 3,480 answers, and 79 of the Top 100 Firms shared 3%.
  4. Size is not destiny: in a second study, the four busiest single-audit firms in North Carolina’s Research Triangle were recommended 24 times, against 184 times for the six least busy.
  5. Capacity makes fit the goal: 73% of 500 firms in Advancetrack’s 2026 Accounting Talent Index (opens in a new tab) said they were turning away potential clients for lack of staff.

A note before you read: this article is about how accounting firms appear in AI answers. Nothing below is tax, accounting or legal advice. If you sell accounting software rather than accounting services, read our article on accounting software in AI search instead.

Who hires an accounting firm, and how do they find one now?

Business owners, finance leaders and individuals with complex taxes, and most still start from a trusted person’s referral.

The individual market is large. In the 2026 filing season, the IRS (opens in a new tab) received 72,821,000 electronically filed returns from tax professionals, out of 137,618,000 e-filed returns in all. Business clients are smaller in number but worth more each year, and they stay.

The best evidence on how businesses choose comes from the 2025 Niche Business Accounting Report, commissioned by TaxDome, a practice management software company, and reported by CPA Practice Advisor. It surveyed 350 US businesses with revenue between $1M and $100M:

  • Referrals dominate. 57% found their current accountant through a peer referral; 3% chose one through advertising.
  • Specialists keep clients. 98% of businesses that left a specialist moved to another specialist, not back to a generalist.
  • Specialization earns a premium. Businesses said they would pay up to 25% more for specific offerings, and companies above $1M in revenue were 2× more likely to hire niche specialists.
  • Bigger clients check the firm’s tools. Among businesses paying $10K+ per year, 83% said a firm’s use of technology is a key factor.

TaxDome sells to accounting firms, so treat this as vendor research. The pattern still matters for AI search. A referral gives a buyer a name, not a decision. We infer that the buyer then checks that name somewhere, and an AI assistant is now one of the places they check. The same habit is spreading across law, consulting and other professional firms.

What do prospective clients ask AI about accounting firms?

Questions that combine a service, a type of client and often a place. We wrote the sample prompts in this table to show how such questions tend to be phrased; none was taken from a real client’s search.

BuyerIllustrative prompt
Business owner“Which CPA firms in Columbus specialize in dental practices?”
Startup CFO“Outsourced accounting firm for a venture-backed SaaS company, under 50 employees”
Nonprofit director“Who does single audits for charter schools near Raleigh?”
Individual“I got an IRS levy notice. Do I need a CPA, an enrolled agent or a tax attorney?”
Investor“Tax preparer who understands crypto trading and K-1s”
Any buyer“Is [firm name] any good? What do clients say?”

Two features stand out. First, the questions are specific: industry, service and location in one sentence. Second, the last one is a reputation check, the kind a referred buyer runs before calling. Our study of “is it legit?” questions found 88.0% of answers cited a review or complaint platform, so what clients say in public becomes part of the answer.

How does an AI mention turn into a client engagement?

Through a short path: the answer names the firm, the buyer reads its niche page, then requests a consultation.

The path looks like a referral, which is why it can be valuable: an AI answer → the firm’s page on that industry or service → a call or consultation request → an engagement letter → recurring tax, advisory or audit work. Because accounting relationships last for years and specialists rarely lose clients to generalists, one well-matched client is worth many years of fees.

The more useful question for most firms is which clients, not how many. Advancetrack’s survey found 73% of firms turning away potential clients, and 45% said the talent shortage is worse than three years ago. The AICPA’s 2025 National MAP Survey summary (opens in a new tab) points the same way: a median 6.7% growth rate among participating firms, a push to fix underpricing, and fewer firms shedding unsuitable clients, which it reads as firms having narrowed their focus to the most attractive ones.

The services firms want to grow are named in the profession’s own data. Among the Accounting Today Top 100, client advisory services were the most common source of growth (opens in a new tab), with 75 firms expanding their practices, and tax made up roughly two-fifths of revenue for firms below $1 billion. A reasonable expectation is that AI visibility pays most when it brings inquiries for those higher-value services from the industries a firm already serves well. If advisory is your growth line, see how advisory firms get named by owners.

Which accounting firms do AI assistants name today?

Mostly the largest firms, but smaller firms with a clear specialty and place can outperform their size.

These findings are observed in studies, not documented by any platform. Accounting Today reported two in October 2026, both run by marketing advisory firms.

The concentration study. Researchers asked 100 buyer questions about tax, audit, advisory and risk services, five times each across seven assistants, and collected 3,480 responses. Twenty-five firms accounted for 87.2% of all mentions; the first 10 took 61.3%, and RSM alone appeared 29.48% of the time. Eight Top 100 Firms were never mentioned at all. Several smaller firms beat what their revenue would predict through an established association with a particular industry, service, place or problem.

The single-audit study. Researchers took 10 firms named as auditor on three or more single audits in the Research Triangle, using the public federal record, and asked five assistants 10 buyer questions, five times each: 250 answers in August 2026 and 250 more in September. The four busiest firms, with 45 of 75 federal engagements, were recommended 24 times in August; the six least busy were recommended 184 times. The firms’ own websites were the most cited source, especially pages that named the region, described the buyer’s kind of work at length and had been updated recently. The busiest firm had 1,821 pages, none of which mentioned its place. Across 2,725 cited pages, the Federal Audit Clearinghouse, the authoritative record of who did the work, was cited only four times.

Both studies were produced by firms that sell marketing services, and the single-audit study covers one service in one region. Read them as early observations, not rules.

Our own local studies add the map. Of the businesses Google Maps ranked 1 to 3 for a local search, ChatGPT listed 67.7%, and businesses with more reviews than the local median were 19.5 points more likely to be listed, after adjusting for rank and other signals. Accountants were one of the five professions in that sample.

What does it cost a firm to be missing or misdescribed?

Lost chances at the clients a firm wants most, and wrong details that misdirect prospects. No one has measured the revenue yet.

Being absent. In the concentration study, 79 of the Top 100 Firms together received only 3% of mentions. For a regional firm, the risk is that a referred prospect asks an assistant about its specialty and hears only national names. That is our inference; no study has yet measured lost engagements.

Being misdescribed. When we asked four assistants for the address, phone, website and hours of real local businesses, answers about accountants differed from the Google profile 17.7% of the time. Most differences traced to the business’s own sources disagreeing with each other.

Competing with capital. The largest firms are consolidating and investing. The Top 100 reported 225 mergers in 2025, up from 122 in 2024, and in June 2026 the Journal of Accountancy reported (opens in a new tab) that KKR would make a “significant equity investment” in Crowe. Larger, better-funded firms naturally produce more of the web material that assistants learn from. The wider pattern is covered in do AI assistants favor big brands over smaller competitors?

How does GEO work for an accounting firm?

Generative engine optimization (GEO) makes a firm’s specialties, places and credentials easy for assistants to find and repeat.

  1. One page per niche and place. A page for each industry and service the firm wants to grow, naming the region it serves, describing the client’s actual work in their words, and dated when it changes. The single-audit study suggests this is the kind of page assistants cite.
  2. Consistent facts everywhere. The same name, address, phone, hours and partner names on the website, Google Business Profile, CPA directories and association listings. If AI answers already get something wrong, here is how to correct wrong brand information.
  3. Reviews and reputation. Ask satisfied clients to review the firm on the platforms people already check, and answer criticism calmly. In our local study, review volume was the signal that held everywhere.
  4. Credible third-party mentions. Industry association talks, trade press in the client’s industry, state society committees, rankings and lists. These place the firm’s name next to the industry it serves.
  5. People pages. Partner bios with credentials, licenses and the industries each partner serves, so assistants can connect expertise to the firm. Medical practices do the same with physician profiles that AI can describe.
  6. Search basics. Pages that rank for the niche still matter; see does ranking on Google get you into AI Overviews?
  7. Regular checks. Ask the niche, local and reputation questions across assistants each quarter and note who is named and which pages are cited.

Every claim on these pages must also meet the profession’s rules on advertising, which bar false or misleading statements. That limit is useful: plain, verifiable facts are what assistants can repeat accurately. GEO cannot guarantee that an assistant names a firm; it makes the evidence about the firm accurate, specific and easy to find.

What can’t the current research tell a CPA firm?

It shows who gets named, not how often an AI mention becomes a signed engagement.

  • No link to engagements yet. We found no public data connecting a firm’s AI visibility to consultations or new clients.
  • Few studies, from interested parties. The two accounting studies came from marketing firms and cover limited questions, services and places.
  • Answers move. Our local study found that two answers to the same question shared only part of their business lists; one check is a snapshot.
  • Vendor surveys. The client-behavior figures come largely from software companies and their survey partners.

Where should a CPA or tax firm start?

Start with the two or three niches you most want to grow, and ask assistants who serves them locally.

Write down the questions a well-matched client would ask: the industry, the service, the place and the problem. Type each one into ChatGPT, Gemini, Perplexity and Google AI Mode the way a business owner or controller would. Note which firms are named, which pages are cited, and whether your firm’s details are right. The gap between that list and the clients you want is your plan.

If your partners want more of the right advisory, tax or audit clients without adding to the work you already turn away, ask us to review your firm’s AI visibility and plan the work by niche. We will test how assistants answer your niche, local and reputation questions, show which sources they rely on, and plan the pages, listings and coverage that tie your firm to the clients you want. Our generative engine optimization service page explains how that niche-by-niche work on pages, directory listings and reviews is diagnosed, carried out and measured.

Frequently asked questions

Does ChatGPT recommend local accountants?

Yes. In our study, ChatGPT answered questions such as “Who is the best accountant in {city}?” with named local firms, and listed 67.7% of the businesses Google Maps ranked in its top 3.

Can a smaller CPA firm appear in AI answers ahead of large firms?

Sometimes. In a single-audit study, the six least busy firms were recommended 184 times against 24 for the four busiest, mostly through pages tied to the region and the buyer’s work.

Will AI replace the need for a tax professional?

Filers do not think so yet. Only 37% would consider AI over a tax professional, down from 43%, and OpenAI says ChatGPT is not intended to replace professional advice.

Do online reviews matter for AI recommendations of accounting firms?

They appear to. In our local study, businesses with more reviews than the local median were 19.5 points more likely to be listed by ChatGPT, after adjusting for map rank.

Sources

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