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Karbon

Finance · karbonhq.com

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Overview

Karbon is collaborative practice management software for accounting firms, combining email, workflow, task automation, client management, time tracking, and billing in one shared platform. Founded in 2014, it is aimed at multi-person accounting, bookkeeping, and advisory firms and is the #1-ranked accounting practice management product on G2.

The problem Karbon solves

Accounting firms typically run client work out of individual inboxes, spreadsheets, and disconnected checklists, so partners can't see who is doing what, client requests fall through the cracks, and recurring engagements get rebuilt from scratch every period. Karbon solves that for multi-person firms by putting email, workflows, tasks, and client communication in one shared system — an email becomes an assigned task, recurring work runs from templates with automatic client reminders, and the whole team sees the same client timeline.

Decision context

Use these points to test whether the product fits your operation, not just whether it has a long feature list.

  • Published starting price: $59 per user / month. Confirm user, usage, and feature limits for the plan you would actually buy.
  • Deployment: cloud. Check security, data-residency, and access requirements for every team that will use it.
  • Verified integrations include QuickBooks Online Accountant, Xero, Xero Practice Manager, Gmail, Microsoft Office 365, Microsoft Teams. Validate sync direction and plan limits for the connections that matter.
  • This record was last checked on 7/21/2026; pricing and features can change.

How to evaluate Karbon

A listing helps create a shortlist; a trial with the team’s real workflow decides whether the tool fits. Use this reading with the structured facts and confirm changes with the vendor.

Workflow fit

The record describes it as a fit for Multi-person accounting, bookkeeping, and CPA firms that want client email, tasks, and workflow in one shared system, Growing practices standardizing recurring client work with templates, task automation, and automatic client reminders, Firms in the QuickBooks Online / Xero ecosystem that need a practice-operations layer on top of their ledger tools. Check that this context matches the volume, roles, and processes your team needs it to support.

Pilot questions

  • Can Karbon complete the critical workflow without manual work outside the product?
  • Do the recorded connections (QuickBooks Online Accountant, Xero, Xero Practice Manager, Gmail) support the sync direction, permissions, and volume we need?
  • What user, usage, storage, support, or security limits appear after the headline starting price?

Evidence and freshness

This record was checked on 7/21/2026. That date tells you when the record was reviewed, not that the vendor has left its terms unchanged since then.

Best for

  • Multi-person accounting, bookkeeping, and CPA firms that want client email, tasks, and workflow in one shared system
  • Growing practices standardizing recurring client work with templates, task automation, and automatic client reminders
  • Firms in the QuickBooks Online / Xero ecosystem that need a practice-operations layer on top of their ledger tools

Not a fit if

  • Solo practitioners or very small firms sensitive to per-user pricing, for whom lighter tools are cheaper
  • Firms expecting an all-in-one suite with tax prep or a client general ledger — Karbon manages the practice, not the books

Why it’s listed

  • #1-ranked accounting practice management product on G2 (4.8/5 across 800+ reviews)
  • Email-integrated workflow turns client emails into assigned, trackable team tasks
  • Built-in billing, time tracking, and task automation for multi-person firms

Pricing

Team

$59 per user / month, billed annually

The essential workflow and collaboration tools for small accounting firms.

  • Integrated email
  • Team collaboration tools
  • Workflow and to-do lists
  • Time tracking & budget reporting
  • Billing & payments

Business

$89 per user / month, billed annually

Workflow automation and integrations to increase efficiency and visibility for growing practices.

  • Everything in Team
  • Automatic client reminders
  • Task automation
  • Industry integrations

Enterprise

Custom pricing

Collaboration, security and reporting tools for large accounting firms.

  • Everything in Business
  • Enterprise platform
  • Dedicated Karbon contact
  • Customization
  • Unlimited usage limits

Features

General ledger & accountingPractice management, not a ledger — pairs with QuickBooks Online or Xero
Accounts payable & bill pay
AI featuresKai, Karbon's AI coworker, plus AI across email and workflow
Bank reconciliation
Corporate cards
Expense managementTracks time and budgets on client work, not employee expenses
Financial reportingReporting covers practice/workflow metrics, not client financial statements
Invoicing & billingBuilt-in Billing & Payments, included from the Team plan up
Multi-currencyMulti-currency client invoicing is not an advertised capability
Public APIKarbon API v3 with published OpenAPI spec (developers.karbonhq.com)

Integrations

QuickBooks Online AccountantXeroXero Practice ManagerGmailMicrosoft Office 365Microsoft TeamsSlackZapierCalendlyDropboxGoogle DriveHubSpotIgnitionDextCCH Axcess

Security & compliance

SOC 2 Type IIGDPR

Pros & cons

Pros

  • Email is built into the workflow — reviewers consistently praise triaging client emails into tasks and assigning them to teammates without leaving the inbox
  • Strong team visibility and collaboration via shared work items, @mentions, and comments
  • Responsive, personalized customer support is a recurring theme across G2 and Capterra reviews
  • Regular feature updates that incorporate user feedback

Cons

  • Substantial initial setup and learning curve — building templates, workflows, and automations is time-consuming
  • Occasional performance issues: slow email loading, file uploads, and large-list management
  • Higher price point than lighter competitors, with useful capabilities gated to higher tiers
  • Email feature gaps noted by reviewers: no email rules or auto-replies, and imprecise email search

What we found

4.8/5
826 reviews aggregatedLast checked 2026-07-21

Karbon is very highly rated (4.8/5 on G2, 4.7/5 on Capterra), with reviewers loving its email-integrated workflow, team visibility, and support, while the most common complaints are setup effort, occasional slowness, and price.

Ratings and review counts come from public review platforms. We link to the original source and keep the underlying review text out of this profile.

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