AEO for accounting firms: being the CPA the engine recommends
Last updated October 14, 2026. Written by the Third Coast AI team.
Answer engine optimization for an accounting firm is the work of getting the firm and its named CPAs recommended when a business owner asks ChatGPT, Google AI Overviews and AI Mode, Gemini, Perplexity and Copilot who should handle a specific situation, such as an S-corp election, a cost-segregation study, a manufacturer's R&D credit or an IRS notice, and it is won on service pages that say exactly which situations the firm handles and for whom, on partner profiles the engines can confirm, and on a Google, chamber and business-press record that agrees with the site. Every one of those pages is a promotional communication under the AICPA Code of Professional Conduct, so the plan is built inside Rule 1.600.001 rather than around it.
We wrote this page for the CPA firms of West Michigan, where we meet clients in person, and the mechanics apply to a firm anywhere. It covers what accounting prompts look like, which decision factors come back when we mine them, which sources the engines cite for accountants, what the code permits in promotion, how tax season changes the calendar, and a plain plan.
Which questions do business owners ask the engines about accountants?
Owners ask the engines the way they would ask a friend who happens to know accountants, which means the prompt carries the situation rather than the service name. In our prompt banks they look like "small business CPA in Holland who handles S-corps and does the payroll too," "accounting firm in Grand Rapids that works with manufacturers and knows the R&D credit," "who should a dental practice use for a cost-segregation study," "fractional CFO services for a $10 million distributor in West Michigan," "CPA to clean up two years of QuickBooks before a sale," and "I got a CP2000 notice, do I need an accountant or a lawyer." The engine names two to five firms and describes each in a sentence, and the description is assembled from whatever the firm and its record say.
The volume of these questions moved into written answers along with everything else commercial. Semrush measured a 71% rise on commercial searches between November 2025 and April 2026, with finance queries growing fastest at 231.25% over the same six months, and Pew Research measured click-through on Google results pages at 8% when an AI summary was present against 15% without one (July 2025). An owner who used to open three firm websites now reads one answer and calls the firm it describes as handling their situation.
How much of the engine's choice comes down to a fixed set of factors?
| Decision factor | How the prompt phrases it | What counts as proof on the page |
|---|---|---|
| Situations handled | "handles S-corps" / "knows the R&D credit" | A page per situation that says what the firm does, for which kinds of client, and what it does not take |
| Industries served | "works with manufacturers" / "dental practices" | Industries named with the specific issues the firm handles in each, without naming clients unless permitted |
| Named CPAs and credentials | "a CPA, not a bookkeeper" | A profile per professional with the CPA credential, state license, years and focus, used in line with state board rules |
| Client size and fit | "for a $10 million company" | Typical client size stated as a range, and the services that go with it |
| Fees and engagement model | "flat monthly fee" / "hourly" | The model stated plainly, with any fee ranges kept current and not likely to change substantially |
| Software and process | "works in QuickBooks Online" | Platforms named, onboarding described, response times stated |
| Reviews and standing | "well reviewed" / "licensed in Michigan" | Google profile that exists and agrees with the site; license confirmable with the state board |
| Location and remote work | "in Grand Rapids" / "works remotely" | Office address, counties served, and whether remote clients are taken |
Most firm sites list services as nouns (tax, audit, advisory, bookkeeping) and leave the situations for the first meeting, which the engine never gets. Aggarwal and colleagues at Princeton (KDD 2024) measured what specific, sourced writing does for citation, with statistics lifting a page's visibility in generated answers by about 33%, cited sources by about 28% and quotations by about 41%, and for a CPA firm the statistics are client-size ranges, years, counts of industries served and deadlines rather than promised savings.
Do directories matter as much for accountants as for lawyers?
Fewer than for lawyers or doctors, because there is no Avvo or Healthgrades for CPAs with the same weight, and that makes the firm's own pages and its Google profile carry more of the load. In our captures the cited sources for accounting prompts are Google Business Profiles and their reviews, where Google's local ranking help page says more reviews and positive ratings can help a business's local ranking, the regional business press and its lists, chamber directories such as the Grand Rapids Chamber's and the Lansing Regional Chamber's, which lists 1,000+ members, LinkedIn for confirming the named people, the state board's license lookup for confirming the credential, and the firm's own explanatory pages for the tax questions owners ask first.
The 5W citation index attributed 85.5% of AI citations to earned, third-party media rather than brand-owned content, and Ahrefs' 75,000-brand study found brand web mentions correlated with AI Overview visibility at 0.664 against 0.218 for backlinks, so the citation and entity program for a CPA firm concentrates on the chamber, the business press, the professional associations and consistent profiles rather than on links.
Does the AICPA code limit what a page can say?
It does, and the limits are compatible with good AEO. Rule 1.600.001 of the AICPA Code of Professional Conduct says a member in public practice shall not seek to obtain clients by advertising or other forms of solicitation in a manner that is false, misleading or deceptive, and interpretation 1.600.010 says promotional efforts would be considered false, misleading or deceptive if they create false or unjustified expectations of favorable results, imply the ability to influence any court, tribunal, regulatory agency or similar body, represent that specific services will be performed for a stated fee or fee range when it was likely the fees would be substantially increased without telling the prospective client, or contain any other representation likely to cause a reasonable person to misunderstand or be deceived. Interpretation 1.600.100 adds that a member who fails to follow state accountancy laws on use of the CPA credential has used it in a false, misleading or deceptive manner.
The practical reading is that pages should not promise tax savings, should not suggest any special standing with the IRS or the state, should state fees carefully or as a model rather than a number, and should use the CPA credential only as the state board allows. Everything the engines need (which situations, which industries, which people, which client sizes, which software, which counties) sits comfortably inside those lines. The FTC's Consumer Reviews and Testimonials Rule, announced August 14, 2024, separately prohibits conditioning incentives on positive reviews, which governs how review requests go out.
A CPA firm's website usually says it offers tax, audit and advisory, which is the one thing every CPA firm offers. The engine is looking for the firm that says it handles S-corp conversions for $3 million contractors in Ottawa County, and almost nobody says that.
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Is tax season a factor in the schedule?
Yes, in two ways. The prompts change by month: January through April they are about returns, extensions, notices and "is it too late to switch accountants," and the rest of the year they are about entity structure, planning, bookkeeping cleanup, sales and the credits. The hidden searches behind a prompt carry the deadline, because Google's AI features documentation says AI Overviews and AI Mode may issue multiple related searches on subtopics and data sources, and our captures show one question splitting into 10 to 20 hidden searches, several of them about dates. A page that answers "what happens if I file an extension in Michigan" in a self-contained paragraph is cited in March; a page that describes tax services in general is not.
The second way is simpler. Nobody at a CPA firm has time to review pages between February and April, so the content and the profile work get done in the off season and verified before the January prompts start. We plan the calendar backward from the deadlines the firm cares about.
Can you describe a plain plan for a CPA firm?
- Prompt bank by situation. 60 to 120 prompts written the way owners describe their problem, with industry, client-size, city and month variants, across visibility, decision-factor, competitor and fact-check prompt types.
- Mining with retrieval on. Each prompt run more than once across the engines, with the hidden searches and the citations captured.
- Proof audit. The factor list checked page by page against the site and the partner profiles, with a compliance read of every existing claim against Rule 1.600.001 and the state board's rules on the credential.
- Situation and profile pages. One page per situation and industry, one profile per CPA, written with the partner, plus explanatory pages for the tax questions owners ask first, all checked at the publish gate before going live.
- Record reconciliation. Google, chamber, association and LinkedIn profiles brought into agreement with the site, a Wikidata item created, and a correction page for anything the engines currently get wrong.
- Verification. The prompt set re-run after indexing and monthly after that, tracked in PromptWatch and Profound alongside our own prompt miner, and reported at the prompt level with the misses included, with the season's prompts checked before the season.
The audit takes about three weeks and the ongoing work runs through the GEO content program and the citation and entity program, with fees quoted after a short scoping call. Firms that want to run the method themselves can read the agencies and professional-services page, and the Holland and Grand Rapids pages cover the two West Michigan markets where we see the most CPA prompts.
Frequently asked questions
Not as a promise. Interpretation 1.600.010 of the AICPA code treats promotion that creates unjustified expectations of favorable results as misleading, so we describe the situations handled and the process rather than the outcome.
You can state the engagement model, and you can state a fee or range if it is not likely to increase substantially without telling the client, which is what 1.600.010 requires. Most firms state the model and quote the number after a conversation.
Yes, when the prompt asks for a CPA, which it often does. The credential has to appear on the profiles in the form your state board allows, and the state license has to be confirmable.
Google Business Profile and its reviews, the chamber directory, the regional business press, LinkedIn for the named people, and the firm's own explanatory pages. There is no Avvo-equivalent for accountants with comparable weight, so the site carries more of the load.