The short answer
For a small accounting or tax firm, AI is most useful for the admin around the real work: chasing missing documents, sorting and drafting replies to client email, formatting engagement letters and keeping busy-season scheduling under control. Review, advice and signatures stay with the CPA, and any AI tool that touches client data falls under your security plan.
We make Extra, an AI agent platform, so this article is written by an interested party. Facts about other tools and about the law come from the sources listed at the bottom, as of the date shown.
What is AI useful for in a small accounting firm?
In a small accounting or tax firm, AI is useful for absorbing the admin around the real work: chasing clients for documents, sorting the inbox, drafting answers to routine questions, formatting engagement letters and keeping busy-season scheduling under control. It does not review a return, give tax advice or sign anything.
Every firm of two to ten people knows the pattern. Tax season arrives, documents are missing, the same questions come in by email (“Where is my return?”, “When do I pay my estimate?”), and staff spend part of each day chasing instead of preparing. The U.S. Bureau of Labor Statistics counts about 1,595,200 accountant and auditor jobs in 2025, with a median pay of $83,680, and notes that overtime is typical during tax season and quarterly audits.
The firms that get value from AI start with the chasing and the inbox, not with the technical work.
Which tasks can an accounting firm hand to AI?
An accounting firm can hand AI document requests, inbox triage and reply drafts, formatting of standard documents and calendar work. The firm keeps review, advice, sensitive client conversations and signatures.
| Task | What AI does | What the firm keeps |
|---|---|---|
| Missing documents | Drafts and sends requests, tracks who answered | The list of what each return needs |
| Inbox | Sorts by client and urgency, drafts routine replies | Every answer that is advice |
| Engagement letters | Formats from your template and client details | Scope, fees, signature |
| Scheduling | Books client meetings, sends reminders | Priorities and capacity |
| Extensions and deadlines | Lists clients by deadline, drafts status emails | The decision to extend |
How do you chase documents without losing the day?
A good document request is precise (the exact list of what is missing), dated (when you need it) and repeated without nagging. AI can keep that rhythm for every client.
- Keep one checklist per client: expected, received, missing.
- Send a clear first request: a bulleted list, a due date, how to upload.
- Follow up on day 7 and day 14, with only what is still missing.
- Switch to a phone call on the third follow-up: a person calls, not the AI.
- Log the answer in the client file so the whole team sees the status.
Worked example: a firm with 300 individual returns where staff spend 15 minutes per client chasing documents puts 75 hours into it each season. If AI absorbs two thirds of that, it frees about 50 hours for preparation and review. These numbers are an example: time your own chasing for one week first.
What does the FTC Safeguards Rule mean for AI tools?
Firms that prepare income tax returns are covered financial institutions under the FTC’s Safeguards Rule, so any AI tool that touches client data falls under the written information security plan (WISP) the rule requires. The IRS and the Security Summit have repeatedly reminded tax professionals that this plan is mandatory, and IRS Publication 5708 offers a template aimed at smaller practices.
- Put the tool in your WISP: what it does, what data it sees, who has access.
- Check the vendor: where data is stored, whether it trains models on your data, how you delete it. The rule expects you to oversee service providers.
- Give the minimum: an email draft does not need a full return pasted into a chat box.
- Know the breach rule: since May 13, 2024, a security event involving unencrypted information of at least 500 consumers must be reported to the FTC as soon as possible and no later than 30 days after discovery.
- Use separate logins for each staff member, with multi-factor authentication.
What should an engagement letter include, and can AI draft it?
An engagement letter should define the scope of services, responsibilities of each side, fees, timing and what is out of scope. AI is good at formatting it from your approved template; it should not decide its content.
Give AI your template and the client details (entity type, services, fees, deadlines): it produces a clean, consistent letter. The scope, the limitation of liability language and the fees are your decisions, reviewed before signature. If your firm uses AI tools on client data, a short sentence in the engagement letter saying so is good practice.
How do you handle busy-season email with AI?
You handle busy-season email by sorting it into three piles and letting AI draft only the routine pile. Advice and anything emotional goes to a person.
- Routine: status questions, upload instructions, meeting changes. AI drafts, staff approve in a click.
- Needs a professional: tax questions, notices from the IRS or a state. AI flags and summarizes; a CPA replies.
- Sensitive: a client in financial trouble, a dispute about fees. A person writes it from scratch.
What should a firm never hand to AI?
A firm should never hand AI anything that carries its signature, its license or a client’s trust without review. That list is short but firm.
- Final numbers on a return: AI can misread a form or invent a figure that looks right.
- Replies to IRS or state notices: AI can summarize the notice; a professional decides the answer.
- Anything sent under a CPA’s name without a read: one wrong date in a status email can cost a client a penalty.
- Uploading full client files to a free consumer tool: that is a Safeguards Rule problem before it is a quality problem.
The test is simple: if a mistake would end up in front of a client, a regulator or a court, a person reads it first.
How does Extra help an accounting firm?
Extra (hello-extra.com), the AI agent platform for small businesses, gives a firm an AI executive assistant. Pam reads the firm’s Gmail, sorts it, drafts replies and document requests, and books meetings in Google Calendar; nothing goes out without a staff member’s approval (see Pam). Oscar does math on figures you provide, and Clara reviews a contract. Extra costs $99 per month for all eight agents (pricing); the security page explains how data is handled. Add it to your WISP like any other vendor.
When Extra is not the right fit: if your practice management software already handles document requests and a client portal, start there. And if your firm runs on Outlook, note that today Extra customers can connect only Gmail and Google Calendar.
Frequently asked questions
Can AI answer clients’ tax questions?
It can draft an answer to a simple, documented question for a professional to check. Advice carries the firm’s liability: it never goes out unreviewed.
What gain should a firm expect in tax season?
The gain is in repetitive writing: requests, scheduling, confirmations, status updates. Expect a few hours per staff member per week, not a change in how returns are prepared. Measure before and after over the same period.
Does an admin assistant still make sense?
Yes. AI takes the repetitive writing; a person keeps the phones, the front desk, paper files and judgment with a difficult client.
Where should you start this week?
- Add a one-page AI section to your WISP.
- Pick one task: document requests.
- Have AI draft three request templates.
- Test on twenty clients for two weeks.
- Measure the time saved, then extend to inbox triage.
Read next: AI inbox management, AI bookkeeping for a small business and our guide to AI agents for small businesses.
Sources
- U.S. Bureau of Labor Statistics, “Accountants and Auditors,” Occupational Outlook Handbook, accessed 11/06/2026
- Internal Revenue Service, “IRS, Security Summit remind tax pros they need a Written Information Security Plan to protect client data,” accessed 11/06/2026
- Federal Trade Commission, “Safeguards Rule notification requirement now in effect,” 05/2024
- Federal Trade Commission, “FTC Safeguards Rule: What Your Business Needs to Know,” accessed 11/06/2026
