Sell accounting firm data to AI companies

Why AI companies want accounting data right now

Bookkeeping, tax preparation and audit support are among the first places where AI agents are being put to work. To prepare a workpaper, flag an inconsistency or draft a review comment, an agent has to understand how an accounting team actually moves through an engagement: who prepares, who reviews, what gets sent back and why, and how deadlines in tax season are managed.

Accounting standards and tax code are public. The craft of applying them is not. It lives in review notes, in engagement checklists, in the messages between a staff accountant and a manager, and in years of practice management data. That is why accounting and tax firms are in strong demand right now, valued below law firms and banks but well ahead of many other industries.

Selling accounting firm data to AI companies in practice means licensing it. The buyer gets a limited right to train on an agreed, cleaned selection, and the firm keeps its records.

What carries the value

The core is the firm's own process across its connected systems, kept over several years:

Review notes are a good example of what makes this data useful. A reviewer's comment, the preparer's reply and the corrected workpaper show judgment in action. When the client's own figures are taken out, that reviewing process still carries most of the value.

History matters: three years of records is the usual starting point, and five or more is better. A mix of service lines – tax, audit and assurance, advisory, bookkeeping – adds breadth.

Who fits and how to count your staff

• CPA firms with tax, audit and advisory practices.
• Tax preparation firms with a central office and year-round staff.
• Outsourced bookkeeping and CFO services with a team working in shared systems.
• Firms merging or retiring a practice, where records may otherwise sit in an archive – see shutting down a company.

Accounting deals typically start from about 15 staff. Count the people who work in the firm's systems: partners, managers, seniors, staff accountants, admin and billing. Seasonal preparers count if they used the same email and chat during the years included. Bigger teams get bigger offers, and firms with 100 or more staff get the largest.

The firm needs to own its records. If you operate under a franchise or network brand where the systems belong to someone else, that is checked early. Internal communication should mainly be in English.

What can be excluded

Sensitive content is filtered inside each system:

• Client documents – tax returns, financial statements, source documents and client-provided files – can be excluded.
• Client identity – names, addresses, Social Security and tax ID numbers, bank details – is removed or replaced.
• HR and personnel records are filtered out.
• Material under engagement-specific confidentiality terms is reviewed and usually left out.

How this applies depends on your engagement letters, your clients and your records, so every deal is assessed case by case. This describes how it generally works today, not legal advice – see data privacy and AI training.

Filtering inside a system keeps the value; dropping a whole system lowers the offer, because the links between a question in chat, the review note and the closed engagement disappear.

What accounting firms typically receive right now

Smaller companies in high-demand industries are quoted individually. These are indicative ranges from what we see in the market right now, not offers – the real number comes in a written offer after a review, and depends on your industry, years of history, which systems are included and demand at the time.

Accounting firms tend to land in the middle of their band – below law firms and banks of the same size, higher when the record is complete and goes back many years. Try our data value estimator for a first estimate.

How a deal works

1. You describe the firm – staff, service lines, systems and years of history. It takes about two minutes and you upload nothing.
2. We review fit, ownership and demand, and reply within 48 hours on business days.
3. You approve a written offer – or say no. Nothing leaves the firm before that.
4. Clean-up and delivery. Client documents and identifiers are filtered out inside each system, then the agreed records are delivered and payment is made.

It helps if a managing partner can sign within about two weeks of the first call. The assessment is free; we only get paid when a deal goes through. See how it works. For the full picture across industries, see how to sell data to AI companies.