Returns vs Register
Match ITC registers against GSTR 2A/2B with practical exception buckets.
Windows GST review software
Turn GST return files into review-ready working papers.
GST Core reads portal PDFs, Excel workbooks, ZIP downloads, and office registers to help teams reconcile ITC, verify returns, calculate late fees, and document sector-specific audit checks.
Native Windows build
Nuitka protected EXE
Firebase updates
Excel outputs
PDF + Excel Scrutiny
Use filed returns and portal downloads directly, including ZIP-based workflows.
Audit Support
Build sector-wise review trails with legal hooks and checkpoint logic.
New in version 2.2.2
Built for faster review, not just matching.
Fuzzy and confidence-based matching
Find likely matches even when invoice numbers, dates, GSTINs, or values do not line up perfectly. Output now includes confidence scores, mismatch fields, reviewer buckets, and suggested actions.
Reference support inside the workspace
Browse GST circulars, tax notifications, and rate notifications year-wise with in-app PDF preview, so review teams can keep working inside GST Core instead of jumping across browser tabs.
Menus and tools now feel like one system
The newer GST Core visual style now carries across submenu pages, matching tools, GSTR-1, GSTR-2A/2B, GSTR-3B workflows, and sector reading screens for a cleaner day-to-day workspace.
Feature map
One workspace for recurring GST review work.
Returns vs Register
GSTR 2A/2B vs ITC Register, RCM Marked Y vs RCM Register, and Credit Notes Populated vs Reversed.
GSTR-1 Scrutiny
Wrong-month verification, Excel consolidation, PDF consolidation, and late-fee computation.
GSTR 2A / 2B Review
Separate 2A and 2B consolidations, Section 16(4), counter-party, and registration cancellation checks.
GSTR 3B Scrutiny
GSTR 3B consolidation and late-filing interest from filed PDFs with table-wise review outputs.
Multi-Return Scrutiny
Turnover reconciliation and ITC populated vs availed review across GSTR-1, 2A/2B, 3B, and 9.
Sector Library
Manufacturing, services, trading, SEZ, EOU, hospitality, healthcare, education, power, banking, petroleum, telecom, and more.
Product view
A guided desktop workspace for office teams.
Download
GST Core 2.2.2
The installer is hosted directly on this website as a ZIP because Firebase Spark Hosting blocks direct EXE uploads. Extract the ZIP, run the installer, and it will upgrade the existing GST Core installation.
Sector coverage
Audit checklists for more than generic GST review.
Manufacturing & FMCG
Scrap, job work, discounts, dealer models, stock, and ITC risk.
IT / SaaS
Exports, place of supply, cross charge, deferred revenue, and refund review.
Trading & Services
Reimbursements, e-commerce, stock mismatch, fake ITC, and cash-sales risk.
Real Estate
Unsold flat reversal, JDA, TDR, valuation, affordable housing, and EPC issues.
SEZ / EOU
Zero-rated conditions, endorsement, refunds, DTA clearances, and export obligations.
Healthcare & Education
Mixed exempt and taxable revenue, pharmacy, diagnostics, coaching, and ITC reversal.
Hospitality & Telecom
POS-heavy turnover, tariff disputes, platform sales, prepaid timing, and vouchers.
Power, Banking & Petroleum
Exempt turnover reversal, 50% ITC option, mixed supplies, and ancillary taxable income.
Support
gstcoreapp@gmail.com
Need help or want to report an issue?
The desktop app includes in-product issue reporting. For direct contact, email the support address.