Karbon pricing, explained (2026)

Karbon costs $59 per user per month on its Team tier and $89 per user per month on Business, both billed annually and verified on karbonhq.com in August 2026. Karbon targets firms of 3 to 10 people. A team of five pays $3,540 per year on Team, or $5,340 per year on Business. That annual team total is the number most rankings never compute, along with the two fees Karbon does not publish at all.

Disclosure: Portico competes with Karbon in the client onboarding category, and this guide is published on our blog. We priced Karbon from its own published page and its verified review pools, and named its strengths alongside its limits. Read our editorial policy for details.

The Karbon tier grid

Karbon publishes two per-user tiers with both billing cycles shown, plus a custom Enterprise tier. These figures were verified on karbonhq.com in August 2026.

Two numbers a budget needs are missing from that page. The absence is the finding:

• Karbon does not publish a minimum seat count. Most per-seat practice tools sell in whole seats with no floor. Karbon's page does not say either way. Confirm whether a minimum applies before you model the cost.
• Karbon does not publish an implementation or onboarding fee. The pricing page shows the per-seat rate and nothing else. Karbon sells by demo, not by signup. That is the setup where a one-time onboarding charge turns up on the call. Treat the published per-seat price as the floor, not the full first-year figure, until Karbon confirms otherwise.

No self-serve free trial is disclosed either. The published entry point is "Book a Demo," so onboarding is sales-assisted. You cannot quietly try this one on a Saturday. You book a call.

The team math

The per-user price is easy to read and easy to underestimate. Here is what Karbon costs at three common firm sizes, billed annually, the cheaper of the two cycles.

Monthly billing raises every figure. A team of five on monthly billing pays $79 per user on Team ($4,740 per year) or $99 per user on Business ($5,940 per year). That is roughly $1,200 and $600 more per year for the same seats. Keeping your options open is the thing you are paying for.

To compute your own Karbon total before you buy:

1. Count your seats, then pick the tier: $59 per user per month on Team or $89 on Business, billed annually.
2. Multiply seats by the rate, then by 12 for the year.
3. If you bill monthly instead, swap in $79 or $99 per user and expect roughly $1,200 or $600 more a year at five seats.
4. Add whatever implementation fee the demo quotes, since Karbon does not publish one.

What each tier gates

Karbon's tiers gate collaboration and automation features, not storage or client counts. Here is what moves you up a tier, per Karbon's published feature list.

Team ($59/$79) includes the core: integrated email that links messages to work items, team collaboration, workflows and to-do lists, time tracking and budget reporting, billing, payments, and engagements. If you want Karbon as a shared inbox with a workflow board attached, Team is the whole product.

Business ($89/$99), marked most popular, adds three things a growing firm tends to want: automatic client reminders, task automation, and industry integrations. The automatic client reminders matter most. Chasing clients by hand is the job most firms buy this software to stop doing. It sits behind the Business tier, not Team.

Enterprise (custom) adds an enterprise platform, a dedicated Karbon contact, customization, and unlimited usage limits. The price is gated. A firm large enough to need it should expect a negotiated number, not a published one.

The only tier with automatic client reminders is Business, at $89 per user per month billed annually. If you need automated client chasing, budget for Business, not Team. That one feature line is the most common reason a firm pays the higher rate.

The client-request model

This is the detail that decides fit more than price does. Karbon collects from clients through email and reminders rather than a traditional logged-in portal. Requests and automatic follow-ups arrive by email with a secure link. Clients never create an account to see a checklist of what they owe. Karbon's center of gravity is internal: email triage and workflow collaboration for your team, not a client-facing document suite.

That cuts both ways, and both edges deserve a fair reading. If your clients will not learn a portal, email requests can convert better, because the client stays in the channel they already use. If you want clients to log in, see one organized list of what they owe, and upload directly, the absence is a real gap. One reviewer named it plainly:

"Not able to save documents to a portal that clients need to submit for bookkeeping and accounting for record keeping" — Tai S., 5 stars, Capterra

Karbon calls this feature Karbon for Clients. Clients open it through a secure magic link that Karbon generates each time a request is sent. There is optional two-factor and no password account to create. There is no traditional logged-in portal. If that is a hard requirement, weigh the magic-link model against it before you buy.

What reviewers say about the price

Karbon holds a strong 4.7 out of 5 across 207 Capterra reviews (Ease of Use 4.5, Customer Service 4.7), and SoftwareAdvice shows the same figures from the same review pool. The praise is warm and specific:

"Karbon is a must have in my view - can't recommend it highly enough!" — Ryan G., 5 stars, Capterra

"It keeps our team aligned, our jobs on track and our team communication on work and with clients in one place" — Ryan G., 5 stars, Capterra

On price, the recurring note is that Karbon is capable but not the cheap option. Reviewers frame it as a value judgment, not a complaint:

"Price: it's not the cheapest option in the market, so it's a real consideration" — Irene B., 5 stars, Capterra

The same reviewer added a fair caution on setup. It pairs with the demo-led onboarding above:

"The interface is functional rather than delightful, and setup takes real time and follow-through from leadership" — Irene B., 5 stars, Capterra

SoftwareAdvice reviewers echo a narrower limit on the client-record side. Weigh it if CRM depth matters to you:

"The CRM functionality could be stronger. While the workflow and email tools are excellent, the client record side feels a little limited."

None of these contradict the 4.7 average. They describe a capable, pricier workflow tool that takes real setup effort and leans on email rather than a client portal. That is not a broken product. That is a price you either want to pay or you do not.

Karbon vs TaxDome vs Canopy on price

Buyers shopping Karbon almost always look at TaxDome and Canopy too. The prices are not comparable line for line, because the billing models differ. Read the caveat column, not just the number. The add-on caveat is the whole story of Canopy's pricing, which we break down separately.

A few honest translations. On a per-user-per-year basis, Karbon Team is $708 and Business $1,068 (annual billing), Canopy Standard is $888 and Plus $1,308, and TaxDome Pro is $1,000. That is our own arithmetic from each vendor's native unit. Karbon has the lowest entry price of the three. But Canopy layers paid modules for tax and close automation on top of its seat price, and TaxDome bills the entire year upfront, non-refundable. The cheapest headline is not the cheapest year. Compare the tier you would actually run.

For the full TaxDome breakdown, see our TaxDome pricing guide. If your firm is a bookkeeping practice weighing whether TaxDome's suite is more than you need, the TaxDome alternative guide for bookkeepers frames the tradeoff.

If you only need client requests and onboarding

Karbon, TaxDome, and Canopy are practice-management platforms, covering CRM, workflow, billing, time tracking, the whole firm. Your job may be narrower: collect documents, get an engagement letter signed, take the first payment, stop chasing clients. A full suite is more tool and more cost than that problem requires. Two lighter options fit the job:

Content Snare starts around $35 per month and is built specifically for requesting documents and information from clients with automatic reminders. It stops at collection, though. No e-signatures, no payments. It suits a firm whose only pain is the document chase.

Portico is another option built for the onboarding job: it collects files, gets e-signatures, and takes payment through your own Stripe account (it takes no cut beyond standard Stripe fees), with unlimited team members on every plan and pricing from $39 per month based on onboarding volume rather than per seat. Like Karbon, it reaches clients by magic link with no account or password. Unlike Karbon, it presents one organized onboarding checklist rather than email requests, which addresses the portal gap reviewers flag. It is deliberately not a practice-management suite: no tax workflows, no CRM pipelines, no invoicing or time-tracking, no knowledge-based e-signature checks. If you need those, buy Karbon or another suite. A lighter onboarding tool will not stand in for one.

The test is the one this whole guide turns on. Match the tool to the job. If you are mapping that job out, our guide on how to collect documents from clients and our client portal software for accountants comparison walk through the options.

FAQ

The frequently asked questions above answer the decisions most buyers face: what Karbon costs in 2026, what a team of five pays, whether an implementation fee applies, whether there is a client portal, how it compares to TaxDome and Canopy, and what reviewers say about the price.

Disclosure

Portico is the publisher of this guide and competes with Karbon in the client-onboarding category. We do not earn affiliate commissions on Karbon, and we priced it from Karbon's own published pricing page and verified Capterra and SoftwareAdvice reviews, current as of August 2026. Where a figure was not published (the minimum seat count, any implementation fee, the self-serve trial terms), we stated the gap rather than filling it. Read our editorial policy for how we evaluate every product.