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GST Software for CAs and Tax Professionals—Free to File!

Run every client's GST from one dashboard. Reconcile, file, and close notices without a per-return platform fee.

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Optotax dashboard showing GST filing status across multiple client GSTINs

What a Practice Actually Needs

Built around multi-client work, not retro-fitted to it

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Every Client, One Dashboard

Switch between clients and GSTINs without logging in and out. Filing status, notices and challans for the whole book of business in a single view.

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Your Whole Team, One Login Each

Add staff and assign them to the clients they handle. Work is attributable, and nobody shares a portal password to get their job done.

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20+ Reconciliation Reports

GSTR-2A/2B against purchase register, GSTR-1 against 3B, e-invoice against sales — the mismatches that cost your clients ITC, found before they file.

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Deadlines Tracked For You

Due dates per client per return, so a missed GSTR-1 is something you see coming rather than something a notice tells you about.

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Notices Handled End to End

Notices fetched from the portal automatically, tied back to the reconciliation that explains them, and tracked to closure.

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No Per-Return Platform Fee

Filing GSTR-1, GSTR-3B and GSTR-9 carries zero platform cost. You are not billed for doing more of the work you already do.

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Why 85,000+ Tax Professionals Choose Optotax

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Built for Volume

AI-assisted reconciliation processes 30,000+ entries a minute, so a hundred-client practice does not become a hundred manual matches.

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Nothing to Install

Cloud-based, so there is no desktop licence to renew, no machine to be tied to, and no version drift across your team.

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Backed by OPEN

Built on the infrastructure behind India's SME neobank, with the security posture a practice holding client tax data needs.

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Bring Your Whole Client Book Into One Place

Sign up free and add your first client in minutes. No installation, no per-return platform fee.

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Security You Can Trust

We follow globally accepted compliance and security protocols to protect your data and ensure full regulatory alignment.

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Frequently Asked Questions