caTantr
Practice OS for Chartered Accountants

Run your firm. Keep every deadline. Grow fees with clarity.

caTantr is the operating system for CA firms — tasks, Document Vault on Google Drive, client communication, and billing in one place your Partners actually use.

Optional Google Workspace

Built for Partners who need control — and teams who need clarity

Stop stitching WhatsApp, Drive folders, and spreadsheets. Give every tenant firm one system of record.

Always compliant, on time
Recurring workflows and automated due-date tracking so your firm does not miss a statutory deadline.
No more guesswork
Every action lands in a permanent activity timeline — who did what, when, and how on every task.
Billing that matches work done
Integrated timesheets and billing so you are compensated for the hours your team actually puts in.

From signup to live practice in three steps

Designed for Partners onboarding a tenant firm — not for a week-long IT project.

  1. 1

    Sign in and create your firm

    Use Google sign-in or email. Your Partner seat becomes the firm owner in minutes.

  2. 2

    Invite the team & add clients

    Roles, permissions, and client directory — then open Document Vault when you are ready.

  3. 3

    Connect Google only if you want

    Drive, Gmail, Calendar, and Contacts are optional — link each service when it helps.

Tasks that stay on track

Recurring compliance work, clear owners, and due dates your firm can actually trust.

Client files in one vault

Document Vault on Google Drive — inward, outward, and client folders without spreadsheet chaos.

Fees tied to work done

Timesheets, billing, and reminders so revenue follows delivery — not memory.

Built for the grassroots
to the enterprise.

caTantr bridges traditional professional practice and modern automation — features competitors often skip that Partners need every day.

Regional languages

Communicate with clients in their native language.

AI consulting

Guidance on notices and professional trends.

Team accountability

Clear audit trails — no internal blame games.

Instant invoicing

Consolidated bills when work is complete.

Login and explore
caTantr application

"The automated workflow audit trail has completely changed how we manage internal accountability. No more missed handoffs."

— Senior Partner, Mumbai Firm

Works with your Google Workspace

Every integration is optional. A Partner connects each Google service separately under Settings → Workspace, and can pause or disconnect it at any time.

Google Drive
Creates a folder for each client and task, with Data Inward and Reports folders, and saves the files your team and clients upload. caTantr only works with the folders and files it creates, or the one client folder you share with it.
Gmail
Sends task, document-request and fee-reminder emails from your firm's own Gmail address when your team asks. caTantr can only send email. It never reads your mailbox.
Google Calendar
Adds task due dates and reminders to a separate "caTantr Deadlines" calendar that caTantr creates. It cannot see or change your other calendars.
Google Contacts
Keeps your caTantr contacts in sync with a "caTantr" label in Google Contacts. Your other contacts and labels are left as they are.

caTantr's use and transfer of information received from Google APIs adheres to the Google API Services User Data Policy, including the Limited Use requirements. Google data is never sold, never used for advertising and never used to train AI models. Read our Privacy Policy for full details.

Google, Google Drive, Gmail, Google Calendar, Google Contacts, Google Workspace, and related marks and logos are trademarks of Google LLC. caTantr is not affiliated with, endorsed by, or sponsored by Google LLC. Use of these marks is subject to Google Permissions and applicable brand guidelines. Google Brand Resource Center.

Transparent & simple pricing

One complete plan for your firm — start on trial, upgrade when ready.

Full Access Subscription
caTantr Professional
Complete practice operating system
₹999Per User / Per Year
Task Automation & Logic
Revenue Intelligence
Multi-role Dashboards
Integrated Timesheets
Audit Trails & Activity
Document Vault (Google Drive)
WhatsApp Reminders
Bulk Communication

All subscriptions begin with a full-access free trial. No credit card required.

Ready to run your practice on caTantr?

Login to start your firm trial, invite your team, and optionally connect Google Workspace when you need it.

    caTantr