Karbon Alternative

All the document collection.
None of the overhead.

Karbon is a full practice-management suite. If your real bottleneck is getting clients to send their documents — not re-tooling your whole firm — idutax does exactly that, in 20 minutes, at a flat fee.

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Free up to 5 clients · No demo required

Feature
idutax
Karbon
Free plan
Starting price
$0/mo
~$59/user/mo
5-user monthly cost
$59 flat
~$295+
Client portal (no login)
Tax document checklists
Automated reminders
Focused on document collection
Setup time
< 20 min
Days–weeks
Start without a demo

Karbon is a strong choice for firms that want to run their entire workflow — email triage, jobs, timesheets — in one place. But that breadth comes with per-user pricing, a learning curve, and onboarding measured in weeks.

idutax does one thing and does it well: it turns document collection into a simple checklist your client fills in from a single link — no login, no app. You see real-time status across every client, and reminders go out on their own. See how it works on our features page, or compare it with the TaxDome and Intuit Link options.

Try idutax free

Up to 5 clients forever free. Setup in 20 minutes.

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