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Getting through tax season with AI agents: a practical plan for small accounting firms

Busy season isn't hard because of the returns. It's hard because of everything around them: the emails, the missing documents, the phone. Here's where AI agents help, and where they shouldn't.

Ask anyone at a small tax or accounting office where their time goes in busy season and you'll hear the same list. Answering “did you get my documents?” emails. Chasing clients for the one form they forgot. Retyping numbers off W-2s and 1099s. Answering the phone every few minutes. The actual preparation work gets squeezed into whatever time is left.

AI agents are good at exactly that surrounding work, as long as they're set up with clear limits. Here's a practical plan.

Start before the rush, not during it

The worst time to introduce a new tool is the week everything gets busy. Set agents up in the quieter months, run a pilot while volume is manageable, and fix any rough edges before clients flood in.

A single agent usually takes about two weeks from first conversation to going live. Give yourself more room than that before busy season starts.

Agent 1: email and intake

For most firms, the inbox is the biggest drain. An email and intake agent can:

  • Answer routine questions: office hours, how to upload documents, what to bring, general status updates you've approved.
  • Reply to clients who are missing documents, with a clear list of what's still needed.
  • Sort the rest by who should handle it and how urgent it is.
  • Give each preparer a short morning list of the emails that actually need them.

It should never give tax or financial advice, discuss the details of anyone's return, or make promises about refunds or deadlines. Those questions get routed to the right person, untouched.

Agent 2: documents

A document agent pulls key fields off forms and statements, such as W-2s, 1099s, invoices and bank statements, and puts them into your spreadsheet or workpapers.

The important rule: it never gets blindly trusted. It should flag every field it isn't confident about, and your staff review the output before it's used. Even with that review step, checking is much faster than retyping.

Agent 3: the busy-season receptionist

When phone volume spikes, an AI receptionist can answer the common questions (hours, what to bring, how appointments work) and book appointments. Existing clients asking about their return get a message taken for their preparer. The agent doesn't discuss anyone's file.

If calls are recorded, the greeting has to say so. Illinois requires consent from everyone on a call before it's recorded.

Guardrails that matter for a tax office

Client financial data deserves care. Before any agent touches it, make sure:

  • It lives in your accounts. Agents should be built in your own Microsoft 365 or Google Workspace and your own AI accounts, not in a vendor's shared system.
  • Your data isn't used for training. Confirm that client information isn't used to train AI models.
  • It fits your security plan. Tax professionals are expected to keep a written information security plan. The IRS publishes guidance for this in Publication 4557. Add any new tool to that plan, including where data goes and who can access it.
  • There's a written NEVER list. No advice, no discussing returns, no sending data outside your approved accounts. Then test it against that list.
  • A person stays in charge. Anything sensitive or unusual waits for a human.

What not to automate

Don't hand an AI anything that requires professional judgment: advice, positions on a return, answers to a worried client about a notice. Don't let it send anything that commits your firm to a fee, a deadline or an outcome. The goal is to give your team more hours for that work, not to replace it.

A simple timeline

  1. Pick the biggest pain. For most firms it's the inbox. Start with one agent.
  2. Write the job card. One page: what it does, what it hands off, what it must never do.
  3. Gather examples. Twenty or thirty real past emails (with client details removed) are enough to build and test against.
  4. Pilot it. Run it for two weeks on real mail while you review its replies.
  5. Adjust and expand. Once it's reliable, add the next agent if you need it.

Is it worth it for a small office?

If your team spends a meaningful part of each busy-season day on routine email, document chasing and phone questions, probably yes. If your clients mostly drop off paper and rarely call or email, probably not yet. Be honest about where the hours actually go.

If you're curious what it would look like for your office, name one task, like answering “did you get my documents?” emails, and I'll show you an agent doing it. There's more about the agents I build for these firms on the accounting, tax and insurance page.

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See an AI agent do one of your tasks.

Tell me one task that eats your time, like missed calls, inquiry emails or booking. Within 3 business days I'll send you a short video of an AI agent doing that job start to finish, for a business like yours. No call needed.

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Azuolas Venslova runs AZE IT in Lemont, Illinois, building AI receptionists, chat and email agents for small local businesses, along with everyday IT help.