All Your GST Compliance in One Place. Finally.

Reconcile GST data, track notices, file GST returns & manage challans—on one intuitive platform.

20+ Reconciliation Reports
End-to-End Notice & Challan Management
GSTR Filing
Multi-GSTIN Dashboard

GST Compliance. Reconciled, Filed & Handled—in One Place.

GST Reconciliation & Smart Reports

GST Notice
Management

GST
Challan Management

GST Return Filing & Management

GST Reconciliation & Smart Reports

Ensure accurate ITC claims and compliance with automated reconciliation across all key returns and books.

Reconcile GSTR-1, GSTR-3B, GSTR-2A, GSTR-2B against your purchase/sales data.
Identify mismatches supplier-wise, rate-wise, and by date range.
Access 20+ downloadable reports for audits, ITC tracking & notice replies.
Spot mismatch trends across clients or GSTINs.
Respond to credit/output tax notices using pre-reconciled data.

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GST Notice Management

Manage the entire lifecycle of GST notices from one dashboard—across clients, GSTINs, and timelines.

Auto-fetch GST notices directly from the portal.
Track, reply, and maintain complete documentation trails.
Link replies to reconciled data with supporting reports.
Map replies to orders, create related challans, and close the loop.
Smart calendar reminders to avoid penalties and missed deadlines.

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GST Challan Management

Stay organized and compliant with centralized challan handling across all clients.

Create, manage, and pay challans across multiple GSTINs.
Track payment status, upcoming dues, and compliance history.
Access challans from July 2017 onward—filtered by client, date, or status.
Get automated reminders before due dates.
Link challans to notices or return filings for complete traceability.

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GST Returns Filing

File monthly, quarterly, or annual GST returns with zero platform cost.

File GSTR-1, GSTR-3B, GSTR-9 with zero fees.
Auto-populate return data from books and reconciliation reports.
Built-in validations to minimize errors and rejections.
Supports QRMP, monthly, and composition scheme filings.
View and manage all client filings from one dashboard.

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OptoAI – India’s First AI Assistant for Tax Professionals.

Your 24/7 GST Expert

Stop scrolling through endless search results. Get instant, precise, contextual answers to your GST queries without waiting for support tickets.

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Why 85,000+ Professionals Switched to Optotax

12 Reasons We're Not Just Another GST Platform

20+ Smart GST Reconciliation Reports – FREE

Every component in pixkit is meticulously crafted for user interaction.

One-Click Dashboard Access

One place to manage returns, challans, clients, notices—across any timeframe.

3X Faster Compliance

Automate reconciliations, filings, and vendor-level ITC tracking—save hours every week.

End-to-End Notice Management

India’s first complete lifecycle solution—auto-fetch, reply, track orders & generate challans.

Maximize Input Tax Credit (ITC)

AI-powered reconciliation ensures zero credit leakage, even with delayed vendor filings.

Client Password Vault

Store and manage GST portal credentials securely in one place—no more password chaos.

Multi-GSTIN & Client Dashboard

From 10 to 100 GSTINs—manage them all from one clean interface.

AI Matching Engine

Reconcile 30,000+ entries per minute—supplier-wise, rate-wise, and date-wise.

Enterprise-Grade Security

SSL, ISO & SOC 2 certified with 2FA, audit trails, and role-based access.

100% Cloud-Based Platform

No installations. No connectors. Just secure access from anywhere, anytime.

Zero Filing Fees

File GSTR-1, GSTR-3B, and GSTR-9 for free—with no surprise charges or hidden limits.

Built by OPEN. Backed by Experts.

Trusted infra by India’s leading SME neobank, built for pros who can’t afford errors.

Get Started

20+ Smart GST Reconciliation Reports – FREE

Every component in pixkit is meticulously crafted for user interaction.

One-Click Dashboard Access

One place to manage returns, challans, clients, notices—across any timeframe.

3X Faster Compliance

Automate reconciliations, filings, and vendor-level ITC tracking—save hours every week.

End-to-End Notice Management

India’s first complete lifecycle solution—auto-fetch, reply, track orders & generate challans.

Maximize Input Tax Credit (ITC)

AI-powered reconciliation ensures zero credit leakage, even with delayed vendor filings.

Client Password Vault

Store and manage GST portal credentials securely in one place—no more password chaos.

Multi-GSTIN & Client Dashboard

From 10 to 100 GSTINs—manage them all from one clean interface.

AI Matching Engine

Reconcile 30,000+ entries per minute—supplier-wise, rate-wise, and date-wise.

Enterprise-Grade Security

SSL, ISO & SOC 2 certified with 2FA, audit trails, and role-based access.

100% Cloud-Based Platform

No installations. No connectors. Just secure access from anywhere, anytime.

Zero Filing Fees

File GSTR-1, GSTR-3B, and GSTR-9 for free—with no surprise charges or hidden limits.

Built by OPEN. Backed by Experts.

Trusted infra by India’s leading SME neobank, built for pros who can’t afford errors.

20+ Smart GST Reconciliation Reports – FREE

Every component in pixkit is meticulously crafted for user interaction.

One-Click Dashboard Access

One place to manage returns, challans, clients, notices—across any timeframe.

3X Faster Compliance

Automate reconciliations, filings, and vendor-level ITC tracking—save hours every week.

End-to-End Notice Management

India’s first complete lifecycle solution—auto-fetch, reply, track orders & generate challans.

Maximize Input Tax Credit (ITC)

AI-powered reconciliation ensures zero credit leakage, even with delayed vendor filings.

Client Password Vault

Store and manage GST portal credentials securely in one place—no more password chaos.

Multi-GSTIN & Client Dashboard

From 10 to 100 GSTINs—manage them all from one clean interface.

AI Matching Engine

Reconcile 30,000+ entries per minute—supplier-wise, rate-wise, and date-wise.

Enterprise-Grade Security

SSL, ISO & SOC 2 certified with 2FA, audit trails, and role-based access.

100% Cloud-Based Platform

No installations. No connectors. Just secure access from anywhere, anytime.

Zero Filing Fees

File GSTR-1, GSTR-3B, and GSTR-9 for free—with no surprise charges or hidden limits.

Built by OPEN. Backed by Experts.

Trusted infra by India’s leading SME neobank, built for pros who can’t afford errors.

Powered by and Trusted by India’s Leading CAs & Businesses

85,000+

Tax Professionals Onboarded

5,00,000+

Businesses Supported

CA R. DHANASEKARAN

Partner

"I've had the opportunity to try various reconciliation tools on the market, including some paid options, but Optotax has been the best so far. The reconciliation process is incredibly easy, robust, and fast, making my work much simpler and more efficient."

Sasidar

Partner

"We truly appreciate the efforts behind this wonderful software. Despite its simplicity, it stands out as one of the best solutions in the market based on our experience with other platforms. The features provided are amazing, making it an essential tool for GST compliance."

PRATIK

Partner

"OptoTax software is easy to use and great for professionals. We appreciate the team's efforts and congratulate them on their great work. Thank you, Team Optotax!"