GST Audit Checklist for Businesses
A GST audit examines records, returns, and tax compliance to verify accurate reporting and payments. Businesses must prepare organised documentation to avoid penalties and delays.
GST Compliance Experts provides comprehensive GST audit services in Delhi, India, to ensure audit readiness and smooth departmental verification.
Registration and Basic Documents
Verify these foundational records first:
- Valid GST registration certificate and amendments
- PAN, TAN, business address proofs
- Authorization letters for signatories
- Board resolutions (if applicable)
Keep digital and physical copies chronologically organised.
Return Filing Records
Match all filed returns with supporting documents:
- GSTR-1 (outward supplies) vs sales register
- GSTR-3B (liability) vs tax payment proofs
- GSTR-9/9C (annual) vs financial statements
- Quarterly GSTR-4 (composition scheme)
Download filed return acknowledgements as proof.
Turnover Reconciliation
Critical Matching Required:
| GST Return | Books of Account | Financial Statements |
| GSTR-9 Table 5B | Sales ledger total | P&L revenue line |
| Exempt supplies | Separate ledger | Revenue classification |
| Export turnover | Forex receipts | Export schedule |
Document differences with working papers.
Input Tax Credit Documentation
ITC Eligibility Checklist:
- GSTR-2B matched invoices only
- Possession of tax invoices/debit notes
- Supplier is active on the GST portal
- Goods/services received and used
- Payment made within 180 days
Reversal Records:
- Blocked credit workings
- Non-business ITC reversal
- Rule 42/43 calculations
Invoice and Supply Records
Organise complete invoice trails:
Sales Documents:
- Tax invoices, simplified invoices
- Credit/debit notes with references
- E-way bills (>₹50,000 movements)
- Export invoices with LUT/bond
Purchase Documents:
- Supplier invoices with GSTIN
- Payment proofs (bank statements)
- Goods receipt notes
- Service acceptance records
HSN/SAC Classification Proofs
Document correct code application:
- HSN master with 6/8-digit codes
- SAC codes for services (9983 series)
- Rate notifications/CBIC clarifications
- Classification committee rulings
Maintain change history if rates are modified.
E-invoicing and E-way Compliance
For turnover > ₹5 crore:
- E-invoice IRN and QR codes
- Invoice Registration Portal logs
- GSP/SIGN compliance certificates
E-way bill reconciliation with invoices is mandatory.
Stock and Inventory Records
Monthly Stock Statements:
- Opening, purchases, sales, closing
- Quantitative details by HSN
- Physical verification certificates
- Stock ageing analysis
RCM and Import Records
Reverse Charge Payments:
- Self-invoices for GTA, legal services
- Foreign SaaS subscriptions
- Payment challans (PMT-06)
- ITC availed of the workings
Financial Records Alignment
Key Ledgers to Prepare:
- CGST, SGST, IGST liability ledgers
- Electronic cash/credit ledgers
- Input/output tax reconciliation
- Trial balance extracts
Export and Refund Documentation
Zero-rated Supply Proofs:
- Foreign exchange realisation certificates
- LUT filing acknowledgements
- Shipping bills/bills of export
- Refund application copies (RFD-01)
Common Audit Focus Areas
High Risk Items:
- ITC claims without the supplier GSTR-3B filing
- Turnover suppression/mismatch
- Wrong place of supply determination
- Blocked credit wrongly claimed
- Stock valuation discrepancies
Digital Document Organisation
Recommended Folder Structure:
GST Audit Ready/
├── 01_Registration/
├── 02_Returns/
├── 03_Invoices_Outward/
├── 04_Invoices_Inward/
├── 05_ITC_Reconciliation/
├── 06_Financials/
├── 07_Reconciliations/
└── 08_Others/
Index with master list for quick access.
Pre-Audit Self-Assessment
Conduct Internal Review:
- Match 100% of ITC claims with GSTR-2B
- Verify 6-digit HSN on all invoices
- Reconcile physical stock vs books
- Trace 10% sample invoices end-to-end
- Review officer-wise jurisdiction
Response Preparation Kit
Keep ready for queries:
- Excel workings for all reconciliations
- Point-by-point notice reply drafts
- Legal precedents/circular references
- Management representation letters
Professional Audit Support
Complex reconciliations and departmental coordination benefit from expert intervention. Our GST audit services in Delhi, India include:
- Complete record organisation
- Quantitative reconciliations
- Authority liaison and hearings
- SCN response preparation
- Appeal documentation
Quick Readiness Checklist
- All returns filed with acknowledgements
- GSTR-2B ITC reconciliation complete
- Invoice samples (20% random) are ready
- Turnover matching the workings prepared
- Stock statements for audit periods
- HSN master with justifications
- RCM payment proofs available
- Single contact person nominated
Regular monthly maintenance prevents the year-end rush. Businesses following this checklist respond confidently to audit notices and minimise disallowances.
