Run your entire CA practice from one software — with your data in your own office.

Clients, TDS, ITR, GST, billing, documents, DSC and staff work-tracking — built by a working CA firm, for CA firms. Installed on your office PC in minutes. No monthly per-user charges, no data on someone else's cloud.

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Annual subscription · one-click installer · works on your office LAN, reachable from home

Everything a CA office runs on

One login for the whole firm — partners see everything, staff see their assigned work.

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Client master & credential vault

Every client with PAN/GST/TRACES portal logins stored AES-256 encrypted — revealed only to authorised staff, every access logged.

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TDS filing workspace

Winman-style deductor/deductee/challan sheets, interest & fee computation, CSI challan verification, TRACES tracking — new Act, Tax Year 2026-27 ready.

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ITR computation & e-filing

ITR-1 to ITR-5 with 1,000+ CBDT validation rules, schema-valid JSON output, Form 3CD tax audit, plus an offline ITR intake tool on every staff PC.

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GST refund, appeal & recovery

Refund statements and annexures, appeal limitation tracking with due-date zones, recovery/litigation registers.

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Billing, receipts & collection

GST invoices with Indian numbering, auto pending-invoice list, receipts, cash book and a collection follow-up screen.

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Documents, DSC & jobs

Year-wise client document repository, DSC expiry register, service jobs with SOP step-tracking and staff assignment, financial statements & CMA reports.

Your data. Your office. Your control.

CA-OMS is self-hosted: the database lives on a PC in your office, not on a vendor's server.

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Installed in your office

One office PC becomes the server; every staff PC connects over your LAN through a clean desktop app. Reach it from home with a simple router setup — we give you the exact steps.

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Backed up automatically

Nightly database backups plus a mirror of every uploaded client document — with an optional copy into your own Google Drive. Restore is built in and tested.

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Always up to date

The software updates itself — staff apps download new versions in the background, and server updates take a safety backup first and roll back automatically if anything fails.

Running in your firm in one afternoon

Install

Double-click the installer on your office PC, pick where the data lives, set the first admin login. About ten minutes — no IT person needed.

Activate

Enter your firm's 7-digit subscription code with your PAN or registered mobile. Done — your subscription, renewals and PC limit are handled online automatically.

Work

Staff install the desktop app, point it at the office server once, and sign in. Add your clients (Excel import included) and start filing.