GST Compliance Alert: 10 Critical Checks for FY 2026–27

 


As India’s GST framework continues to evolve, compliance is no longer just about filing returns on time—it is about accuracy, reconciliation, and proactive planning. With enhanced portal validations, stricter scrutiny, and data-driven assessments, FY 2026–27 demands extra attention from businesses of all sizes.

Whether you are a small trader, service provider, exporter, or a growing enterprise, missing key compliance checks can lead to notices, interest, penalties, blocked ITC, and working capital stress. To help you start the financial year on the right foot, here are 10 critical GST compliance checks you must not miss for FY 2026–27.

1️⃣ File LUT for Zero-Rated Supplies (Due by 31 March 2026)

If you are an exporter of goods or services or supplying to SEZ units without payment of IGST, filing a Letter of Undertaking (LUT) is mandatory at the start of every financial year.

Why this matters:

  • Without a valid LUT, exports may attract IGST payment upfront

  • Refunds can get delayed or denied

  • Non-filing may lead to compliance notices

👉 Action Point: Ensure LUT for FY 2026–27 is filed on the GST portal before 31 March 2026.

2️⃣ Opt for Composition Scheme (CMP-02) – If Eligible

Eligible taxpayers can opt for the Composition Scheme by filing Form CMP-02.

Key considerations:

  • Lower tax rates

  • Simplified compliance

  • No ITC available

  • Suitable for small businesses with limited turnover

👉 Deadline: CMP-02 must be filed on or before 31 March 2026 to opt for composition from FY 2026–27.

3️⃣ File ITC-03 for Composition Transition (Due by 30 May 2026)

If you are switching from regular scheme to composition scheme, you must reverse the ITC availed earlier by filing Form ITC-03.

Why this is critical:

  • Failure may lead to demand of wrongly availed ITC

  • Interest and penalties may apply

  • Commonly overlooked during transitions

👉 Deadline: ITC-03 must be filed within 60 days, i.e., by 30 May 2026.

4️⃣ Choose QRMP Scheme Carefully (Due by 30 April 2026)

Taxpayers with turnover up to ₹5 crore can opt for the QRMP (Quarterly Return Monthly Payment) Scheme.

Things to evaluate:

  • Cash flow management

  • Frequency of compliance

  • Business volume and vendor expectations

👉 Last date to opt in/out: 30 April 2026 for the April–June quarter.

5️⃣ Collect GTA Declarations for Proper RCM Compliance

Goods Transport Agency (GTA) services are subject to Reverse Charge Mechanism (RCM) in many cases.

What businesses often miss:

  • Proper declaration from GTA

  • Incorrect assumption of forward charge

  • Non-payment of RCM leading to notices

👉 Best practice: Collect written GTA declarations at the beginning of the year and review contracts to ensure correct tax treatment.

6️⃣ Reset Invoice Number Series (Effective from 1 April 2026)

GST law requires a financial-year-wise invoice numbering system.

Why resetting is mandatory:

  • Duplicate invoice numbers can trigger system mismatches

  • Risk of return rejection or scrutiny

  • Non-compliance during audits

👉 Action Point: Reset invoice series starting 1 April 2026 across accounting and billing systems.

7️⃣ Recalculate Aggregate Turnover

Aggregate turnover plays a vital role in multiple GST decisions, including:

  • Composition eligibility

  • QRMP eligibility

  • E-invoicing applicability

  • HSN reporting level

  • Audit & compliance thresholds

👉 Action Point: Recalculate turnover including:

  • PAN-level turnover

  • Exempt supplies

  • Inter-state supplies

  • Branch registrations

8️⃣ Reconcile ITC – Match GSTR-2B with GSTR-3B

Input Tax Credit (ITC) scrutiny has become one of the most aggressive areas under GST.

Key risks:

  • Claiming ITC not appearing in GSTR-2B

  • Vendor non-compliance

  • Credit reversal with interest

👉 Best practice:

  • Monthly reconciliation of GSTR-2B vs GSTR-3B

  • Follow up with vendors for missing invoices

  • Maintain proper reconciliation working papers

9️⃣ Settle RCM Liabilities Through GSTR-3B

RCM applies to multiple services and supplies such as:

  • GTA services

  • Legal services

  • Director remuneration

  • Certain imports

Common mistakes:

  • RCM liability not discharged

  • ITC claimed without tax payment

  • Late payment attracting interest

👉 Action Point: Identify all RCM transactions and ensure tax payment through GSTR-3B, followed by correct ITC claim.

🔟 Update HSN Codes & Phase-III Reporting Compliance

GST authorities have rolled out Phase-III of HSN reporting, requiring:

  • Correct HSN codes

  • Separate reporting for B2B and B2C invoices

  • Higher digit-level reporting based on turnover

Why this is important:

  • Incorrect HSN can lead to notices

  • Mismatch between returns and invoices

  • Data analytics-based scrutiny

👉 Action Point: Review and update HSN masters in your ERP/accounting software.

Final Thoughts: Compliance Is Prevention

GST compliance for FY 2026–27 is not just about meeting deadlines—it is about accuracy, documentation, and proactive checks. Most GST notices today arise from data mismatches, missed declarations, or overlooked procedural requirements, not intentional defaults.

By completing these 10 critical checks early, businesses can:

  • Avoid unnecessary litigation

  • Improve cash flow by safeguarding ITC

  • Maintain a clean compliance track record

  • Focus on growth without compliance stress

Need Expert Help with GST Compliance?

At Taxla Services Pvt. Ltd, we help businesses stay compliant, audit-ready, and future-proof with end-to-end GST advisory, return filing, reconciliation, and notice handling.

📞 Contact us today: +91 7305701454
📧 Email: auditsiva2@gmail.com
🌐 Website: www.taxlaservices.com

#GSTCompliance #FY202627 #GSTUpdates #InputTaxCredit #RCM #GSTR3B #GSTR2B #BusinessCompliance #TaxlaServices #ProfessionalAdvice #BestAuditorInTamilnadu

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