What is AEO, and why do accounting firms need it?

AEO — answer engine optimization — is the work of making sure AI assistants like ChatGPT, Perplexity, Google's AI Overviews and Gemini name your firm when someone asks them to recommend an accountant. Accounting firms need it because a growing number of business owners now begin that search by asking an AI a plain question — "who's the best accountant for a small business in Cape Town?" — and the assistant replies with three or four names. If yours isn't one of them, you were never in the running, and nothing in your Google ranking will tell you it happened.

That last point is the shift worth understanding. For twenty years, being found meant ranking on the first page of Google: someone typed a query, got ten blue links, and clicked one. AEO is for a different habit that has taken hold quickly. A prospective client opens ChatGPT, or reads the AI summary that now sits at the top of a Google search, and gets a short answer that already contains the recommendations. They often don't scroll, and frequently don't click anything at all. The answer is the decision.

For accounting firms this matters more than for most businesses, because choosing an accountant is a high-trust, carefully researched decision. People rarely pick the first name they see. They ask around, they compare, they look for someone who handles SARS, payroll and tax for a business like theirs. More of that asking-around now runs through an AI assistant, and the assistant does the comparing on the client's behalf. When it answers "the best firms for small businesses in Cape Town are A, B and C," it has quietly built the shortlist your prospect chooses from — and you are either on it or you aren't there at all.

Here is the trap that catches good firms. You can rank well on Google, have a tidy website, and still be missing from every AI answer. The two aren't the same system. Search rankings reward pages; AI answers reward something else — whether the engines have enough consistent, trusted information about you to feel confident naming you. A firm with a complete Google Business Profile, a steady flow of reviews, and a site that states plainly what it does and where will get named. A firm without those signals gets skipped, however long it has been in practice. Your SEO reports won't flag this, because they were never built to measure it.

So what does AEO actually involve? Three things, in practical terms. A complete, consistent Google Business Profile with real client reviews, since that is where the engines look first for local recommendations. Structured data on your website — code that tells an AI exactly which services you offer and which areas you serve — so it can read you without guessing. And content that answers the questions buyers genuinely ask, written in the direct format the engines pull from. None of it is mysterious. Most firms simply haven't done it, because until recently there was no reason to.

The useful thing is that this is checkable. You don't have to wonder whether your firm shows up; you can ask the four assistants the questions your clients would ask and see for yourself who gets named. Most firms running this check for the first time are caught off guard, usually because a competitor they don't rate keeps appearing while they don't. That gap is what AEO exists to close, and closing it is far more straightforward than the work you already do every day on a tax return.