Karbon vs Soraban: which fits your firm?
Karbon starts at $59 per month while Soraban quotes pricing on request; both list small and mid-size firms; Karbon runs in the browser where Soraban runs in the browser and on mobile.
Prices and details verified August 15, 2026 for Karbon and June 29, 2026 for Soraban. Both records sit in Practice management and workflow and are compared on vendor-published specifications, the same way across every tool.
Karbon vs Soraban side by side
7 of 13 dimensions differ. Rows marked "Differs" are where the two records do not match.
| Dimension | Karbon | Soraban |
|---|---|---|
| Entry priceDiffers | $59 per month | Quoted on request |
| Pricing modelDiffers | Per user | Custom quote |
| Free trial | Not listed | Not listed |
| Free plan | No | No |
| Firm size fit | Small, Mid-size | Small, Mid-size |
| Built for | Accounting firms | Accounting firms |
| SpecialisationDiffers | Practice management | Tax, Practice management |
| Automation profile | Mixed routine and judgment work | Mixed routine and judgment work |
| DeploymentDiffers | Cloud | Cloud, Mobile |
| Geo availabilityDiffers | US, UK, Australia, Canada, Global | US, Canada |
| Integrations listedDiffersBoth list: Dropbox, Zapier. | 12 listed | 13 listed |
| Certifications | Not published | Not published |
| Support channelsDiffers | Email, Chat, Knowledge base, 24/7 cover | Email, Knowledge base |
Which one fits your firm
Choose Karbon if
- Firms of five to fifty staff where email and shared task lists hold the team together.
- Practices on QuickBooks, Xero, or Gmail and Outlook that want one shared client view across the team.
- Managers who need a firm-wide view of every job and deadline without scheduled status meetings.
Think twice about Karbon if
- Solo practitioners who already manage every client inside their inbox without team handoffs.
- Firms that want to try before committing. Karbon has no free trial or free tier.
- Tax-first practices that need built-in tax organizers and pre-filing questionnaires inside the portal.
Choose Soraban if
- US tax firms running 150 or more 1040s a year that want one platform across intake, data entry, and delivery.
- Mid-size CPA practices on Lacerte, UltraTax, or Drake losing weeks to non-billable intake and delivery work.
- Firms wanting intake, smart organizers, e-signature, and client payment routing under one annual contract.
Think twice about Soraban if
- Firms outside the US. The product is built around the US 1040 and pushes data into US-only tax engines.
- Solo practitioners running only a handful of 1040s a year. Soraban is built for higher-volume tax practices.
- Practices doing only entity returns (1120, 1120-S, 1065). Soraban is purpose-built for individual returns.
What each one does
About Karbon
Karbon pulls client emails out of personal inboxes and into a shared workspace where the whole team can see context, act on work, and track deadlines without a handover meeting in sight.
Built for firms that struggle with scattered client emails, missed deadlines, and team handoffs across shared work.
About Soraban
Soraban is a US tax workflow platform built for firms running individual returns at volume. It replaces paper organizers with smart dynamic questionnaires, pushes extracted data into Lacerte, UltraTax, Drake, and ProSeries with vendor-claimed 97 percent accuracy, and delivers the finished return through a branded client portal that handles e-signature, payments, and liability instructions.
Best for US tax firms running 150 or more 1040s a year on Lacerte, UltraTax, Drake, or ProSeries.
Frequently asked questions
- Which is cheaper, Karbon or Soraban?
- Karbon publishes an entry price of $59 per month. Soraban quotes pricing on request and publishes no figure, so the two cannot be compared on published prices alone.
- Do Karbon and Soraban both offer a free trial?
- No. Neither Karbon nor Soraban lists a free trial. Neither publishes a permanently free plan.
- Which one integrates with QuickBooks and Xero, Karbon or Soraban?
- Karbon lists QuickBooks and Xero. Soraban lists neither. Across their full published lists the two share 2 integrations: Dropbox and Zapier.
- Which suits a smaller firm, Karbon or Soraban?
- Both records list the same firm sizes: small and mid-size. The split comes from the rest of the record, including deployment, specialisation and the integrations each vendor lists.