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Financial Year 2025–26  |  A Comprehensive Guide for Businesses & Tax Professionals

CA Jagdeep Garhwal                                 7March 2026                          Goods & Services Tax             Articles


As FY 2025–26 draws to a close, GST compliance demands meticulous attention. Year-end is a critical juncture — mismatches, missed filings, and unclaimed credits can translate into significant penalties, interest costs, and cash-flow disruptions. This comprehensive checklist helps businesses and tax professionals systematically close out the financial year with zero gaps.

 Key Deadline Alert:  The most critical GST year-end activity window runs from April 1 to September 30, 2026 — the last date to rectify FY 2025–26 errors in GSTR-3B and claim missed ITC under Section 16(4).

1. GSTR Return Filing — Status Verification


Ensure all returns for FY 2025–26 are filed, reconciled, and free of errors before the year closes. Missing or late returns attract late fees and block ITC for recipients.

Monthly / Quarterly Returns — Filing Checklist
  GSTR-1: All months (Apr 2025 – Mar 2026) filed — verify nil returns where applicable
  GSTR-3B: All months filed; cross-verify tax paid vs. liability declared in GSTR-1
☐  GSTR-2B auto-populated data reviewed for each month; discrepancies noted
  QRMP scheme taxpayers: IFF (Invoice Furnishing Facility) filed for Q1, Q2, Q3, Q4
  GSTR-9 (Annual Return): Prepare & reconcile data — due by December 31, 2026
  GSTR-9C (Reconciliation Statement): Applicable if aggregate turnover > ₹5 crore
  CMP-08 (Composition taxpayers): Quarterly statements filed for all 4 quarters
☐  GSTR-7 (TDS deductors) & GSTR-8 (TCS collectors): All monthly filings completed
  Verify auto-populated GSTR-2B for Apr 2025 – Mar 2026 for ITC eligibility

2. Input Tax Credit (ITC) Reconciliation


ITC reconciliation is arguably the most consequential year-end activity. Unclaimed or incorrectly claimed ITC affects both cash flow and legal exposure. Section 16(4) of the CGST Act bars ITC claims after the September return of the next financial year.

 

ITC Action Items — Column A ITC Action Items — Column B
☐  Match GSTR-2B ITC vs. books of accounts for all 12 months   Verify ITC on capital goods — proportionate credit under Rule 43
  Identify and follow up on missing invoices from suppliers ☐  Check blocked credit u/s 17(5): motor vehicles, personal use, food, health
  Reverse ITC on goods/services used for exempt supplies (Rule 42/43) ☐  Ensure ITC on import of goods reconciles with ICEGATE / Bill of Entry data
  Reverse ITC on goods written off, lost, or destroyed   ITC claimed by recipient matches outward supply filed by supplier in GSTR-1
  Check ITC reversal on non-payment to suppliers beyond 180 days ☐  Verify ITC for job work materials sent / received (Form ITC-04 compliance)
  Re-claim reversed ITC once supplier payment is made   Year-end provisional ITC claims: ensure finalisation before September 2026

 

3.Outward Supply & Liability Reconciliation


Reconciliation of outward supplies between your accounting records and GST returns is essential to identify undetected leakages or over-declarations.

 

Outward Supply Reconciliation Tasks
  Reconcile GSTR-1 figures vs. books of accounts — gross turnover, taxable turnover, tax collected
  Verify tax collected on advances and its adjustment upon invoice issuance
  Check credit notes / debit notes issued — reported correctly in GSTR-1 Table 9B
  Export invoices: verify LUT/Bond validity; zero-rated supplies correctly classified
  E-invoicing compliance: all B2B invoices above threshold generated via IRP portal
  HSN Summary (Table 12 of GSTR-1): verify HSN-wise reporting for March 2026
  Reconcile e-way bill data with GSTR-1 outward supply details — flag mismatches
  Reverse charge mechanism (RCM): all inward supplies from unregistered dealers declared
  Identify any supplies wrongly treated as exempt or non-GST — rectify before year-end
☐  Verify GST on related-party transactions at open market value (Rule 28)

 

4. Annual Return (GSTR-9) — Preparation Checklist


📅 Due DateGSTR-9 for FY 2025–26 is due by December 31, 2026. Start preparation early — data gaps from Q1 are harder to reconstruct months later.

 

GSTR-9 Data Collection & Validation
  Compile turnover data: taxable, nil-rated, exempt, non-GST, and zero-rated separately
☐  Aggregate ITC availed across all GSTR-3B filings vs. GSTR-2B for the full year
☐  Identify ITC reversed during the year — RCM payable but not paid, Rule 42/43 reversals
  Taxes paid table: IGST, CGST, SGST/UTGST, cess — match to GSTR-3B monthly data
  Reconcile HSN-wise summary of inward supplies for GSTR-9 Table 18
  Refunds: amounts claimed, pending, and sanctioned during FY 2025–26
  Demands and arrears: any outstanding demand orders to be reflected in GSTR-9
  Late fees paid: verify against actual filing dates for each return in the year

 

5. Reconciliation With Financial Statements


Your GST data must reconcile with audited financial statements. Divergences often arise from accounting policy differences, timing of recognition, or treatment of GST on certain transactions.

Reconciliation Area Key Risk / Gap Action Required
Turnover Timing difference: revenue recognition vs. invoice date Adjust for advances, deferred revenue, unbilled revenue
ITC in Books ITC claimed but not appearing in GSTR-2B GSTR-2B vs. ledger match; provisionally claimed ITC to be regularised
GST Payable Reversal entries not reflected in GSTR-3B Cross-check monthly liability; pay differential with interest
Expenses & RCM RCM liability not disclosed on certain expenses Review import of services, GTA, legal fees, etc.
Fixed Assets ITC on capital goods — partial credit per Rule 43 Maintain asset register with ITC apportionment details
Creditor Ageing ITC reversal missed for invoices unpaid > 180 days Run ageing report; reverse and reclaim ITC systematically

 

6. Refund Management


Year-end is the right time to assess pending and prospective GST refund claims, particularly for exporters, inverted duty structure cases, and excess cash ledger balances.

Refund Checklist
☐  Export refunds (zero-rated supplies): file RFD-01 for all eligible shipping bills / invoices
☐  Inverted duty structure refunds: calculate ITC accumulation per Section 54(3)
☐  Excess cash ledger balance: apply for refund if balance is unlikely to be utilised
☐  Refund applications filed but pending: track status on GST portal; respond to queries promptly
☐  Ensure FIRC / BRC available for export of services refund claims
☐  Verify that zero-rated supplies are backed by valid LUT for FY 2025–26 and FY 2026–27
☐  LUT renewal for FY 2026–27: file on GST portal before April 1, 2026
☐  Rejected refund orders: evaluate appeal timelines and fresh applications

7. E-Invoicing & E-Way Bill Compliance


 

E-Invoicing Checklist E-Way Bill Checklist
  Verify e-invoicing applicability threshold for FY 2025–26   E-way bills generated for all inter-state supplies > ₹50,000
☐  All B2B invoices above ₹5 crore threshold generated via IRP   E-way bill data reconciled with GSTR-1 and GSTR-3B
  IRN (Invoice Reference Number) captured in records   Expired e-way bills: check for any outstanding disputes
  E-invoicing for export invoices and credit notes — compliant ☐  Consolidated e-way bills for bulk movement — compliant
  QR code mandatory on B2C invoices (if applicable) — verified   Transporter ID updated in all outward supply e-way bills

8. Notices, Audits & Litigation


Any pending notices or audit proceedings should be reviewed and tracked as part of the year-end exercise. Unaddressed notices can escalate into adjudication and recovery proceedings.

Notice & Litigation Tracker Tasks
  Review all GST notices received during FY 2025–26 — ASMT-10, DRC-01, DRC-01A, SCN
☐  Ensure timely replies filed for all show-cause notices — check response deadlines
  Track departmental audit (Section 65) proceedings — documents submitted, hearing attended
  Special audit (Section 66): expert assessor report and response filed
  Demands confirmed: deposit under protest or file appeal before due date
  Appeal before Appellate Authority: track hearing dates and pre-deposit compliance
  Refund rejection orders: evaluate appeal under Section 107 within 3 months
  Prosecution matters: ensure legal counsel engaged for Section 132 cases

9. Registration & Profile Management


 

GST Registration Hygiene Checklist
  Principal place of business address correct and updated on GST portal
  Additional places of business registered if new godowns / offices opened during the year
☐  Directors, partners, authorised signatory details — current and updated
  Digital Signature Certificates (DSC) renewed and valid for e-filing
  Bank account details verified on portal; cancellation of old/closed accounts
☐  Amendment applications for any changes during FY 2025–26 filed via Form REG-14
  Cancelled registrations: final return in GSTR-10 filed within 3 months of cancellation
  Review composition scheme eligibility for FY 2026–27; opt in/out via Form CMP-02 by March 31

10. Inter-State Supplies, SEZ & Special Transactions


 

Inter-State & Import/Export SEZ & Specialised Transactions
  IGST correctly applied on all inter-state B2B supplies ☐  SEZ supply invoices: zero-rated; endorsed by proper officer
  Place of supply determined correctly for service transactions   High seas sale documentation and GST treatment reviewed
☐  Cross-border transactions: import of services under RCM declared   Works contract classification reviewed: immovable vs. movable
  GST on OIDAR services received from outside India — complied ☐  Voucher / gift card GST treatment correctly determined
  Stock transfers between branches — GST applied if distinct persons   Non-monetary consideration transactions valued correctly

 

11. Key Dates — FY 2025–26 Year-End Calendar


Date Activity Applicable To
Mar 31, 2026 Last date to opt into/out of Composition Scheme Regular taxpayers
Mar 31, 2026 LUT filing for zero-rated supplies in FY 2026–27 Exporters
Apr 11, 2026 GSTR-1 for March 2026 Monthly filers
Apr 13, 2026 GSTR-1 for Q4 (Jan–Mar 2026) QRMP / Quarterly filers
Apr 20, 2026 GSTR-3B for March 2026 Monthly filers
Apr 22–25, 2026 GSTR-3B for Q4 2025–26 QRMP filers
Jun 30, 2026 GSTR-4 Annual Return — Composition taxpayers Composition dealers
Sep 30, 2026 Last date to rectify FY 2025–26 errors in GSTR-3B All registered taxpayers
Sep 30, 2026 Last date to claim ITC for FY 2025–26 (Sec 16(4)) All registered taxpayers
Dec 31, 2026 GSTR-9 & GSTR-9C — Annual return filing All regular taxpayers

12. Common Year-End Errors to Avoid


 

Common Mistake Consequence & Remedy
ITC claimed in books but not in GSTR-2B Excess ITC claim — attracts demand + 24% interest. Match and adjust before Sep 30.
Missed RCM liability on import of services Tax + interest + penalty. Declare in GSTR-3B and pay cash; avail ITC in same month.
GSTR-1 vs GSTR-3B mismatch Triggers auto-scrutiny notices. Rectify in April 2026 return.
ITC not reversed on 180-day non-payment Interest liability from date of ITC availed. Reverse and reclaim on payment.
LUT not renewed for FY 2026–27 Exports become taxable; refund route required. Renew before March 31, 2026.
Advance received — GST not paid Demand + interest. Issue receipt voucher and pay GST in month of receipt.
Credit notes issued post-September cut-off ITC reversal by recipient not possible — supplier bears the cost. Issue before cut-off.

 

💡 Final Word

A disciplined year-end GST review protects working capital, avoids penalties, and prepares your business for a seamless FY 2026–27 start. Begin early, reconcile systematically, and consult a qualified GST practitioner for complex transactions.