1
Import Your Data
Pull from GSTN portal, Tally, ERP, Excel — any format, any column structure, any extension.
Authorised GSP ․ ICAI Recognised ․ ISO 27001
India's #1 GST Software for Return Filing, Reconciliation & Compliance
File GST returns faster. Automate ITC Reconciliation fot accuracy. Manage every client, every GSTIN, every deadline, from one cloud-based platform trusted by 1.5 lakh+ practitioners and businesses across India.
1.5L+
Users
99%
Reconciliation accuracy
30s
To reconcile multi-month data
81%
Time saved vs. Excel tools
GST Return Filing Software
File Every GST Return, Accurately, On Time, Every Time
Whether you're a CA managing 500 clients or a finance team handling a multi-state enterprise, Spectrum Cloud's GST filing engine handles the complete compliance cycle end to end. Import data, auto-validate, reconcile ITC, and file, directly to the GST portal, without leaving the platform.
Every Return Type. One Platform.
| Return | What It Covers | Who Files It | Key Feature |
|---|---|---|---|
| GSTR-1 / IFF | Outward supplies, monthly & quarterly | All regular taxpayers | 100+ validations ․ Party-wise & Section-wise segregation ․ Tally & Excel import |
| GSTR-3B | Monthly summary return with ITC claim | All regular taxpayers | 100% accurate filing ․ Auto-fill from GSTR-1 & 2B ․ ITC set-off as per amended rules |
| GSTR-2A / 2B | Auto-drafted ITC reconciliation | All regular taxpayers | 99% accuracy ․ 3x speed ․ 30-second reco engine ․ Invoice-wise & Supplier-wise reconciliation |
| GSTR-9 | Annual return | All regular taxpayers | Auto-calculated from GSTR-1, 2A & 3B ․ Side-by-side Books vs Portal comparison |
| GSTR-9C | Annual reconciliation statement | Turnover above ₹5 Cr | Auto-populated from GSTR-9 ․ Clear comparison of Books data vs GSTR-9 data |
How Spectrum Cloud Simplifies GSTR Filing
2
Auto-Validate
100+ smart rules flag format errors, missing GSTINs, HSN mismatches & duplicates before filing.
3
Reconcile ITC
Auto-match purchases vs. GSTR-2A/2B and Books. Separate eligible from ineligible ITC. Claim every rupee owed.
4
Review & Approve
Email GSTR-3B draft for client confirmation. View Cash & Credit Ledger balance before filing.
5
File & Get ARN
One click. Direct portal login, E-Sign, or DSC. ARN acknowledgement in seconds.
GST Reconciliation Software
Maximize Your ITC Claims, With Complete Accuracy
ITC leakage is the most expensive GST mistake a business can make. Spectrum Cloud's reconciliation engine, inherited directly from ExpressGST, saves 81% of reconciliation time compared to manual Excel tools, matches invoices within 30 seconds, and delivers 99% accuracy across multi-month, multi-quarter, and annual reconciliation.
99%
Reconciliation accuracy
30s
To reconcile multi-month data
81%
Time saved vs. Excel tools
4
Match statuses, intelligent engine
Every Reconciliation Type, Automated
2B vs Books
Match every purchase invoice against GSTR-2B in real time. Invoice-wise and party-wise with match / partial-match / mismatch status.
GSTR-1 / 3B / Books
Three-way reconciliation: what you declared, what you paid, what your books show. Catch discrepancies before penalties do.
GSTR-1 vs E-Way Bill
Reconcile invoices filed in GSTR-1 against E-Way Bill records. Detect under/over-reporting and HSN mismatches for seamless logistics compliance.
2B vs E-Invoice
Cross-check e-invoice data against GSTR-2B records. Eliminate duplicate invoices and amended-original mismatches automatically.
Books vs E-Invoice
Validate that every e-invoice generated is accurately reflected in your books — catch gaps before they surface in your returns.
IMS Reconciliation
Manage supplier invoices from GSTR-1, GSTR-1A, and IFF directly via the IMS Dashboard. Accept, reject, or keep invoices pending with ITC reversal declarations — without logging into the GST portal.
PAN-Level Consolidation
Unify ITC position across all GSTINs under a single PAN. Essential for multi-branch enterprises and group companies.
RCM & ITC Eligibility
Flag invoices with RCM conflicts and ITC eligibility differences — capital goods, inputs, services — classified as per amended rules.
ITC Management — Every Rupee Accounted For
Split or Reject ITC
Separate incorrect or personal-use ITC in one step. Classify section-wise as per GSTR-2B while preparing GSTR-3B.
Defer ITC
Defer any ITC input to the next month with a single action. Full audit trail maintained automatically.
ITC Comparison
Detailed ITC computation considering annual ITC from 2A/2B vs 3B. Compare across 3B/2B, 2A/2B, and 3B/2A to maximise your permissible ITC claim.
ITC Tracker
Track pending ITC across invoices, vendors, and months with a real-time dashboard. Compare 2B vs 3B, monitor ageing credits, and follow up — all from one place.
Lost & Blocked ITC
Automatically track blocked ITC reversals and credits lost due to unpaid supplier taxes. Identify missing invoices and inactive GSTINs before they impact your 3B.
Vendor Communication
Send one-click email reminders to non-compliant vendors. Recover blocked ITC by automating follow-ups without any manual intervention.
Identify GST Defaulters
Flag suppliers who haven't filed their returns so you know which ITC claims are at risk before filing 3B.
IMS & GSTR-3B Hard-Lock Ready
Stay compliant with IMS actions and GSTR-3B hard-locking rules. ExpressGST aligns ITC claims with evolving GST regulations automatically.
Unclaimed TDS / TCS Credits
Automatically check for unclaimed TDS/TCS credits so they can be approved and transferred to your Cash Ledger before filing.
Built for Both
Built for CAs. Built for Businesses. One Platform for Both.
ExpressGST was the go-to GST software for businesses and enterprises. Spectrum Cloud for CA was built for practitioners managing hundreds of clients. Spectrum Cloud (GST) now serves both, from one login, one dashboard, one platform.
Run Your Entire GST Practice From One Dashboard
Managing a CA practice means managing hundreds of GSTINs, deadlines, and reconciliation backlogs converging at the same time. Spectrum Cloud for CAs & Tax Professionals is built for exactly this.
- Unlimited GSTIN management, no per-client login switching
- Client-wise filing status, see who's filed, who's pending, who has mismatches
- Bulk return filing, file for all clients in one go, not one by one
- Team access with role-based permissions, preparers, reviewers, filers
- Deadline alerts across your entire client base, never miss a due date
- Auto-scheduled 2A/2B data pull from GSTN for all clients
- Historical notice tracker, every notice, order, and reply on record
- Multi-month & multi-quarter reconciliation in a single click
- Email GSTR-3B draft to clients for review before filing
Enterprise-Grade GST Compliance at Every Scale
Trusted by 50,000+ India's top enterprises, Spectrum Cloud for Corporates & Enterprises handles multi-state GST complexity, ERP integration, and PAN-level reporting without the manual overhead.
- PAN-level dashboard, consolidated return status across all GSTINs
- Multi-GSTIN management, all branches under one company login
- Bulk ERP integration, Tally, SAP, Oracle, legacy systems via Excel/API
- E-invoice & E-Way Bill integration, reconciled across invoice lifecycle
- Advanced role-based access, CFO view vs. accountant view
- One-click filing via E-Sign / DSC with ARN tracking
- Save 80% of time on filing, automate GSTR-1, 3B, 9, and 9C
- Advanced error detection, inverted duty, portal rejection flags
- Audit trail, every action timestamped for clean internal audits
GST Notice Management
Track Every GST Notice. Respond Before Deadlines, Not After.
A missed GST notice can turn a minor discrepancy into a major penalty. ExpressGST's built-in notice management module is now available across Spectrum Cloud, including auto-sync for every notice issued by GSTN against any of your GSTINs, with full filing history attached so the context behind every notice is always one click away.
Centralised Notice Tracker
All GST notices and orders across all GSTINs and all clients in one unified dashboard. Click any notice to expand a tree-view of complete details, past responses, follow-ups, current status, and pending actions — without leaving the page.
Auto-Sync with GST Portal
ExpressGST automatically fetches all notices and orders linked to your registered GSTINs directly from the GST portal — eliminating manual tracking and ensuring data is always accurate and up-to-date.
Real-Time Notice Tracking
Monitor every notice and order the moment it arrives. Status indicators show pending vs. resolved cases at a glance — so no deadline is ever missed.
Connected to Return History
Every notice is linked to its related return filing history so you can immediately see what triggered it and respond with full context — in seconds, not days.
Access Past Financial Years
Maintain a comprehensive archive of all notices, orders, and replies across financial years. Instantly retrievable for audits, compliance checks, or client reviews.
One-Click Downloads
Export all notices, submitted responses, and official communications for any client in a single click — no navigating through individual GSTIN profiles.
Categorise, Prioritise & Assign
For CA firms on Spectrum Cloud — filter and categorise notices by type, urgency, or client group. Assign tasks to team members and monitor response status in real time with a full resolution history maintained automatically.
Why Spectrum Cloud
Why 1.5L+ Users Choose Spectrum Cloud Over Every Other GST Software
| What Matters | Spectrum Cloud (GST) | Generic GST Tools |
|---|---|---|
| Reconciliation accuracy | ✓ 99%, super-fast engine | Basic 2A/2B match only |
| Reconciliation speed | ✓ 30 seconds, multi-month | Hours in Excel |
| Time saved on filing | ✓ Save 80% vs. manual | Manual step-by-step |
| Pre-filing validations | ✓ 100+ smart rules | Basic format checks |
| Multi-client management | ✓ Unlimited GSTINs, one login | Per-login / per-GSTIN |
| Data import flexibility | ✓ GSTN, Tally, ERP, Excel, any format | Template-dependent |
| Notice management | ✓ Built-in, with history | ✗ Not available |
| ITC management | ✓ Split, defer, classify, auto-remind | Manual |
| GSTN authorisation | ✓ Official ASP, direct integration | Third-party relay |
| ICAI recognition | ✓ ICAI Recognised platform | ✗ Not recognised |
| Security certification | ✓ ISO 27001 ․ VAPT ․ 128-bit SSL | Varies |
| ERP integration | ✓ Tally, SAP, Oracle, legacy | Tally only / limited |
| Annual return (GSTR-9/9C) | ✓ Auto-calculated from 1, 2A, 3B | Manual preparation |
Data Security
Your Data Security is Our Top Priority
Spectrum Cloud is an ICAI-recognised platform built on enterprise-grade infrastructure. Every byte of your GST data, in transit and at rest, is protected by bank-grade encryption, certified security audits, and role-based access controls.
Authorised GSP
Official ASP, direct portal integration
ICAI Recognised
Trusted by chartered accountants nationwide
ISO 27001
International information security standard
VAPT Certified
Vulnerability & penetration testing certified
128-bit SSL
Encryption in transit and at rest
Role-Based Access
Granular permissions, team & client level
ExpressGST Users
ExpressGST Is Now Spectrum Cloud (GST)
If you've been filing GST returns with ExpressGST, you're already on India's #1 GST software. Everything has moved to Spectrum Cloud, your login, your data, your clients, your filing history. Not a single thing needs to be redone. Here's exactly what changed and what didn't.
| Feature | On ExpressGST | On Spectrum Cloud (GST) |
|---|---|---|
| GST return filing (GSTR-1, 3B, 9, 9C) | ✓ Available | ✓ Same, now faster & more automated |
| 2A / 2B ITC reconciliation | ✓ 99% accuracy | ✓ Same + 6-way reconciliation types |
| Multi-client GSTIN dashboard | ✓ Unlimited GSTINs | ✓ Same + team access controls |
| Notice management | ✓ Historical notices & orders | ✓ Same + integrated with TDS & ITR |
| ERP / Tally integration | ✓ All formats supported | ✓ Same + SAP, Oracle, API |
| E-invoice reconciliation | ✓ Available | ✓ Same + E-Way Bill sync |
| Your login credentials | — | ✓ Unchanged, use as-is |
| Your historical filing data | — | ✓ Fully carried over, nothing lost |
| TDS & ITR in same platform | ✗ Separate product | ✓ Now integrated in Spectrum Cloud |
Login With Your ExpressGST Credentials
No reset. No re-registration. Your existing ExpressGST username
and password work here directly.
Previously signed in at expressgst.com, use the exact same credentials
below.
FAQ
Frequently Asked Questions
Frequently asked questions about KDK Software.
What is the best GST software for CAs in India?
Spectrum Cloud (GST), formerly ExpressGST, is India's most widely used GST filing software for CAs and tax professionals, with 1.5 lakh+ users managing client returns, ITC reconciliation, notice management, and compliance across unlimited GSTINs from one cloud-based platform. It is Authorised GSP and ICAI Recognised.
What happened to ExpressGST? Is it shutting down?
ExpressGST has not shut down. It has become Spectrum Cloud (GST), part of KDK Software's unified compliance platform. The product is identical, same features, same team, same data. Your login, your client records, and your entire filing history are intact and accessible at kdksoftware.com/gst-software/. Nothing needs to be re-set up.
Is Spectrum Cloud GST software fully cloud-based?
Yes, fully. No installation required. Log in from any browser on any device, manage your entire GST practice or business compliance, and file returns directly to the GSTN portal from anywhere in India. All data is stored securely on ISO 27001-compliant, VAPT-certified servers.
Can I manage multiple clients from one Spectrum Cloud login?
Yes. Spectrum Cloud supports unlimited GSTIN management under a single login, with client-wise filing status dashboards, bulk return filing, role-based team access, and deadline tracking across all clients, no per-client login required.
How accurate is the GSTR-2A / 2B reconciliation?
Spectrum Cloud's super-fast reconciliation engine delivers 99% accuracy and matches invoices within 30 seconds for multi-month, multi-quarter, and annual reconciliation. It saves 81% of time compared to manual Excel-based tools, and supports four match statuses, Matched, Partially Matched, Only in 2A/2B, and Only in Books.
Which GST returns can I file with Spectrum Cloud?
GSTR-1, GSTR-3B, GSTR-2A/2B reconciliation, GSTR-9, GSTR-9C, CMP-08, IFF, and GSTR-7, all filed directly to the GSTN portal with 100+ pre-filing smart validations and instant ARN acknowledgement. GSTR-9 is auto-calculated from GSTR-1, 2A, and 3B data.
Is Spectrum Cloud authorised by GSTN and recognised by ICAI?
Yes. Spectrum Cloud is a Authorised GSP Application Service Provider (ASP), ICAI Recognised platform, ISO 27001 compliant, and VAPT certified, with 128-bit SSL encryption applied in transit and at rest for all GST data.
Does Spectrum Cloud integrate with Tally, SAP, and other ERPs?
Yes. Spectrum Cloud supports seamless bulk import from Tally, SAP, Oracle, legacy ERP systems, and Excel files, all formats, all column structures, all extensions. For large enterprises, API-based integration is also available for automated, real-time data sync.
Start Today
Start Filing Smarter with Spectrum Cloud (GST)
India's most trusted GST return filing software, now with the full power of an integrated compliance suite. Whether you're continuing from ExpressGST or starting fresh, Spectrum Cloud is ready.
No installation. No setup. File your first return in under 10 minutes.