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.
Reconcile returns and registers, investigate exceptions, and prepare Excel working papers. Version 3.2.1 corrects turnover reconciliation, export-note allocation and GSTR-9 table extraction, alongside the improved invoice-level ITC matching.
Native Windows build
Nuitka compiled 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 3.2.1
Built for faster review, not just matching.
Version 3.2.1 corrects GSTR-1 export-note allocation and reads wrapped GSTR-9 Tables 4 and 5 across page breaks and watermarks. RCM values and attributable annual adjustments are included correctly, with mixed-category adjustments flagged for review. The invoice-level ITC improvements below remain available.
Invoice identity before tax comparison
Compare supplier and invoice identity first, with safeguards for ambiguous number formats and reused numbers across financial years. Suggested matches remain review decisions and do not consume portal invoices.
Repeated bookings, not just amount multiples
Review repeated voucher bundles and split bookings against invoice-level totals. Referenced reversals and reclaims remain separate movements; a potential duplicate is not automatically treated as a confirmed excess claim.
See why each result was produced
Open the scrollable Why this result? window to inspect identity evidence, tax-head comparisons, tolerances and booking references. Excel comments retain the decision trail without crowding the visible columns.
Clear categories, balanced control totals
Review matched, tolerance, tax-head, tax, date, invoice-number and GSTIN differences in compact sheets. Separate only-in-register, only-in-return and data-review views remain available. Candidate values do not inflate return totals.
Missing values are not assumed to be zero
Taxable Value and Cess are optional matching inputs. Missing tax information with a nonzero counterpart requires review. An invoice can be present on both sides while still flagged as blocked or ineligible; matching alone does not establish eligibility.
Clearer consolidation and interest workings
Improved extraction handles wrapped decimal values, repeated ITC labels and expanded payment tables. Consolidation checks duplicate months and mixed GSTINs or financial years, with unnecessary methodology and source-file details removed from the relevant exports.
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 and IGST/CGST/SGST reconciliation across GSTR-1, 3B and 9, plus layered ITC populated-versus-availed review.
Sector Library
15 sector-specific handbooks with evidence checks, examples, cautions, bookmarks, local notes and PDF/HTML export.
Bare Acts
CGST, Maharashtra GST and IGST source PDFs, organised by section with search, zoom, complete page access and local PDF saving.
Circulars & Notifications
Year-wise circulars, rate notifications and tax notifications with live search suggestions, in-app PDF reading, zoom and saving.
Product view
A guided desktop workspace for office teams.
The GST Core workspace, shown with an example user. Open the image for a full-size view.
Download
GST Core 3.2.1
The current required update, with corrected turnover reconciliation, export-note allocation and GSTR-9 extraction, alongside safer invoice reconciliation. The installer upgrades an existing GST Core installation rather than creating a separate app.
Download the ZIP, extract it, and run GSTCore-Build-Setup-3.2.1.exe to install the 64-bit Windows application.
Installation notes
If Windows reports a missing VCRUNTIME DLL, install the Microsoft Visual C++ x64 Redistributable and reopen GST Core. Publisher metadata is Amak Softs; this installer is not digitally signed, so Windows may display an unknown-publisher warning.
Sector coverage
Audit checklists for more than generic GST review.
All 15 handbooks now include evidence-led checks, worked examples and review cautions. Keep local notes, bookmark useful sections, or export a handbook for reference.
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. Guidance and reconciliation outputs support an officer's review; verify source records, applicable law and subsequent amendments before drawing conclusions. For help, email the support address.