Small and medium firms

Best AI for Small and Medium Tax and Accounting Firms (2026)

Faradex publishes this guide and is one of the providers described. Other tools are described from their own public pages.

Updated November 10, 2026

Every card lists

  • Who it's for
  • What it does
  • Price as published
  • How you buy it
  • What happens to client data
  • Source and date checked

Short answer: For a small or medium firm that wants private AI on client documents, Faradex, which publishes this guide, starts at $120 a month. If you need AI tax research, Blue J sells it online at a published price, with a 7-day free trial.

What small and medium firms need from an AI tool

If your firm has no IT department to vet a vendor, look for a published price, a tool you can start using this week, and a clear answer on what happens to client data.

That last point is not optional. The IRS's June 2026 guidance tells practitioners to "strictly handle all client data using only secure, enterprise-approved AI" and to "never upload sensitive data to unsecured sites" (IRS OPR alert 2026-19). The FTC also treats tax preparers as financial institutions under its Safeguards Rule, which means overseeing any vendor that touches client data (16 CFR 314).

AI tools for small and medium firms

1

Faradex

Listed first (our product)
Who it's for
Small and medium tax and accounting firms that want private AI for confidential client documents.
What it does
Gives your firm its own private AI Workspace on dedicated infrastructure. A team of AI agents researches, drafts, analyzes and cross-checks work on your client documents. It is not tax software: it has no tax research library, tax forms or e-filing, so use it alongside your tax research tool.
Price as published
From $120 a month. The faradex.ai homepage says: "Starting at $120 per month with no user minimum."
How you buy it
From faradex.ai, starting with a free trial. Firms of more than 20 people can ask Faradex to size a plan.
What happens to client data
Your files, chats and Workspace database are held in memory only. Nothing is saved to a drive, there are no backups, and it is all gone when you reset. Faradex staff have no access. Faradex currently uses Opus via AWS Bedrock, where zero-data-retention mode means Amazon does not store your prompts or responses, and Anthropic has no access to them. Everything stays in the U.S. Faradex says: "We are SOC 2 compliant. Specifics can be found at https://faradex.ai/security."

Source: faradex.ai · faradex.ai/security · Checked November 10, 2026

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2

Blue J

Who it's for
Sole practitioners on the Individual plan, and firms with several tax professionals on the Team plan.
What it does
AI tax research and drafting, with what Blue J calls "Full US federal and SALT tax coverage" and "Unlimited questions, drafting, and file uploads."
Price as published
Individual plan: $1,498 a year per user. Team plan: price on request.
How you buy it
Online, with a 7-day free trial and no credit card required. For the Team plan, contact Blue J.
What happens to client data
Blue J says customer data is not used to train AI models. It uses models from OpenAI and Google, has signed agreements that bar both from training on Blue J data, and has opted out of their abuse monitoring. Uploaded files older than 24 hours are deleted every day; other data is removed on request. Data is stored and processed in the U.S., in Amazon Web Services' Northern Virginia region.

Source: bluej.com/pricing · bluej.com/security · Checked November 10, 2026

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What about ChatGPT, Claude and Copilot?

They are general-purpose AI, not built for tax work, but their business plans have published data terms. OpenAI says that by default it does not use data from ChatGPT Business for training, and qualifying organizations can set how long it keeps business data (openai.com/business-data). Anthropic's Claude Team plan lists "No model training on your content by default" (claude.com/pricing). Microsoft says Copilot prompts, responses and data accessed through Microsoft Graph "aren't used to train foundation LLMs" (Microsoft Learn). ChatGPT Business and a Claude Team standard seat each cost $20 per user a month when billed annually, and Copilot Business is an add-on to a Microsoft 365 plan.

What to check before you buy

  1. Read the vendor's own price page, and check whether there is a seat minimum.
  2. Find its training terms: does it, or its AI model provider, train on your data?
  3. Find out how long it keeps your prompts and files, and how you delete them.
  4. Check where your data is stored and processed.
  5. Require the vendor's safeguards in your contract, and reassess the vendor from time to time (16 CFR 314.4(f)).
  6. Add the tool to your written information security plan, which IRS Publication 4557 says the Safeguards Rule requires (IRS Pub 4557).

Bigger firm?

The platforms large firms and tax departments buy are on Enterprise tax AI. The full ranked list is on the Top AI Tax Tools guide.