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Karbon: AI aimed at the email and status-chasing pile in your firm

Our verdict: Karbon is practice-management software. That means it runs your firm's work -- the jobs, tasks, deadlines, and client emails -- not your clients' books. Its AI goes after the time that vanishes without a trace: the shared inbox and the "where does this job stand?" question. It sorts and prioritizes incoming email, sums up long threads and jobs in a few lines, and drafts replies you approve. If your firm is a few people deep and email is the quiet time sink, that is a real fit. It is priced per user, $59 to $89 a month billed annually. A solo with a light inbox may not need it, and it will not do the books or a tax return.

The short version:

What it is: cloud practice-management software for accounting firms, with AI built into the workflow and the shared email inbox.
What it does: triages the inbox (sorts and prioritizes messages), writes short summaries of long email threads and jobs, and drafts replies your team reviews before sending.
What it costs: Team $59 per user a month billed annually ($79 month-to-month); Business $89 per user a month annually ($99 monthly); Enterprise by quote.
Where it fits: multi-person firms where client email and unclear job status eat the day, and you want one place to run the work.
Where it does not: keeping the books (see QuickBooks + Intuit Assist or, across many clients, Double and Botkeeper), or tax research with citations (see Blue J).

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See it explained

Explainer video coming soon.

Karbon is practice-management software for accounting firms with AI that sorts the shared inbox, summarizes long email threads and jobs, and drafts replies; plans run $59 to $89 per user a month billed annually.

What does Karbon actually deliver?

Karbon aims its AI at the part of firm life that never shows up on a timesheet: keeping up with client email and knowing where work stands. In a firm with a shared inbox, messages pile up and get missed. Karbon's AI sorts and ranks what comes in, so the urgent client note is not buried under newsletters. Open a long back-and-forth and it gives you a short summary instead of making you read twenty replies. Ask for a reply and it drafts one from the thread, which you edit and send.

The same idea runs through the jobs side. A busy-season tax return moves through steps and people, and Karbon summarizes where a job sits so nobody has to chase a colleague for status. A person still owns every decision and every send. The AI removes the reading and re-typing, not the judgment.

What does it cost?

Karbon prices per user, and the AI features are part of the platform, not a separate line. There are two published plans plus a custom tier.

Plan	Price (billed annually)	Month-to-month
Team	$59/user/mo	$79/user/mo
Business	$89/user/mo	$99/user/mo
Enterprise	By quote	By quote

Paying by the year is the cheaper path; month-to-month costs more per seat. Multiply the per-user rate by your headcount to get the real monthly figure. Pricing checked 2026-07-24. Not sure which plan your firm needs? A local AI pro from the finder below can help you size it.

Keeping client data safe

Confidentiality note: Karbon holds your client emails, documents, and job details, so it sits on sensitive data by design. You answer for how it is handled. Under IRS Circular 230 you stay responsible for the work you sign, even when AI helped. IRC section 7216 -- a federal rule that requires a tax preparer to get the client's written consent before using or sharing tax-return information -- can apply when return details sit in the emails and files the AI reads. The FTC Safeguards Rule (part of the GLBA financial-privacy law) and the IRS-required WISP, a Written Information Security Plan every firm must keep, mean you have to check how the tool stores and protects data. Before client information flows through Karbon's AI, get its data-handling and model-training terms in writing and confirm it does not train on your client data. A local pro from the finder below can help review those terms. This site is educational only -- it is not tax, accounting, or legal advice.

Who is it right for?

Strong if…

Your firm has more than one person and runs a shared client inbox.
Missed emails and unclear job status are the real time drains.
You want one system for jobs, tasks, and client communication, with AI built in.
You are ready to move firm workflow into a new platform and train the team.

Maybe not if…

You are a solo with a light inbox -- the per-user cost may outrun the payoff.
The job you want done is the books -- that is QuickBooks, Double, or Botkeeper.
You need tax research with citations -- look at Blue J.
You want a tax-firm workflow built around a client portal and document requests -- compare TaxDome and Canopy first.

Common questions

How much does Karbon cost?

Karbon has two published per-user plans plus a custom tier. Team is $59 per user per month billed annually, or $79 month-to-month. Business is $89 per user per month billed annually, or $99 monthly. Enterprise is by quote. AI features are part of the platform. Pricing checked 2026-07-24.

What does Karbon's AI do?

Karbon's AI works on your firm's own email and work items. It triages the shared inbox by sorting and prioritizing messages, writes short summaries of long email threads and jobs so you can catch up fast, and drafts replies you review before sending.

Is Karbon a bookkeeping or tax tool?

No. Karbon is practice-management software that runs your firm's workflow, tasks, and client communication. The books still live in QuickBooks or Xero, and tax prep and tax research happen in other tools. Karbon organizes the work around them.

Does Karbon's AI train on my client data, and what about section 7216?

Get Karbon's data-handling and model-training terms in writing and confirm they do not train on your client data before any client information goes in. Section 7216, the federal rule requiring client consent before using tax-return information, can apply when return details sit in emails the AI reads.

Last reviewed: 2026-07-24. Nothing on this page is tax, accounting, or legal advice, or a recommendation to hire any provider. We refer local pros; we do not vet or endorse them. Verify all pricing and data-security terms with the vendor.

Want Karbon set up around how your firm actually works?

A local AI consultant can move your jobs and shared inbox into Karbon, tune the AI triage and summaries to your workflow, and confirm the data terms before client email goes in. Enter your zip in the finder above to see pros near you.

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