As the financial year 2025–26 draws to a close, businesses across India enter one of the most critical phases of their compliance cycle. Year-end is not only about finalizing accounts and preparing financial statements — it is also a decisive checkpoint for Goods and Services Tax (GST) compliance.

Failing to complete important GST formalities before March 31 can lead to penalties, loss of tax benefits, blocked input credits, or even future scrutiny notices. On the other hand, a well-planned year-end review ensures a smooth transition into FY 2026–27 with clean records and reduced compliance risks.

This comprehensive guide explains the key GST actions that businesses, accountants, and tax professionals should review and complete before the financial year closes.

Why Year-End GST Review Is Crucial

GST operates on a continuous reporting system throughout the year, but the year-end is the last opportunity to correct mistakes, reconcile data, and exercise key options that cannot be changed later.

Completing these tasks on time helps businesses:

        i. Avoid interest, penalties, and notices

      ii. Safeguard eligible Input Tax Credit (ITC)

   iii.   Ensure accurate financial reporting

    iv.  Improve audit readiness

      v.  Maintain compliance continuity for the next year

1.   Composition Scheme — Decide Whether to Join or Exit

Small taxpayers with annual turnover up to ₹1.5 crore can opt for the Composition Scheme, which allows them to pay GST at a fixed lower rate with simplified compliance requirements.

However, the scheme comes with restrictions, such as limited ability to claim ITC and restrictions on interstate supplies.

What to review before March 31:

        i.            Current turnover trends

      ii.            Profit margins and tax liability

   iii.            Customer profile (B2B vs B2C)

    iv.            Need for input tax credit

      v.            Expansion plans for the coming year

If a business wants to opt into or withdraw from the Composition Scheme for FY 2026–27, the decision must be finalized before the end of the financial year. Missing this deadline means continuing under the existing scheme for the entire next year.

2.   LUT Filing for Exporters — Mandatory Annual Renewal

Exporters supplying goods or services without paying IGST must submit a Letter of Undertaking (LUT) every year.

By filing LUT in Form GST RFD-11 before March 31, exporters can continue exporting without paying tax upfront.

Why timely LUT filing matters:

        i.            Prevents blockage of working capital

      ii.            Avoids refund procedures for IGST paid on exports

   iii.            Ensures uninterrupted export operations

    iv.            Maintains competitiveness in international markets

If the LUT is not renewed, exporters may be required to pay IGST on each export shipment and later claim a refund — a process that can be time-consuming and cash-intensive.

3.   Goods Transport Agency (GTA) — Choose Taxation Method

Goods Transport Agencies must select how GST will be discharged for the upcoming financial year.

They must decide between:

a.     Forward Charge Mechanism (FCM)

The GTA itself pays GST and can claim input tax credit.

b.     Reverse Charge Mechanism (RCM)

The recipient of services pays GST directly.

This choice must be declared through Annexure V or VI before March 31, 2026, and once selected, it remains applicable for the entire financial year 2026–27.

Careful evaluation is necessary because the option impacts pricing, compliance burden, and cash flow.

4.   QRMP Scheme — Evaluate Suitability for FY 2026–27

The Quarterly Return Monthly Payment (QRMP) Scheme is available to taxpayers with turnover up to ₹5 crore.

Under this scheme:

        i.            GST returns are filed quarterly

      ii.            Tax payments are made monthly

   iii.            Compliance burden is reduced

Businesses should assess whether QRMP aligns with their operational needs, especially if turnover has changed during the year.

Although the deadline to change QRMP status for the April–June quarter is April 30, 2026, reviewing eligibility and suitability before year-end allows businesses to plan cash flows and compliance schedules more effectively.

5.   Comprehensive GST Reconciliation — The Most Critical Task

Year-end reconciliation is arguably the most important GST activity.

Businesses should perform a detailed comparison between:

        i.            Books of accounts

      ii.            GSTR-1 (outward supplies)

   iii.             GSTR-3B (tax summary return)

    iv.            GSTR-2B (auto-generated ITC statement)

Key discrepancies to identify:

        i.            Unreported sales invoices

      ii.            Incorrect tax classifications

   iii.            Missing purchase invoices

    iv.            Ineligible or excess ITC claimed

      v.            Unrecorded credit notes

    vi.            Scrap or asset sales not reported

 vii.            Differences in tax liability

Resolving these issues before March 31 prevents future departmental queries and ensures accurate financial statements.

6.   Prepare for Mandatory E-Invoicing (if Applicable)

From April 1, 2026, businesses whose turnover has exceeded ₹5 crore in any financial year since 2017–18 must implement e-invoicing.

E-invoicing requires invoices to be registered on the Invoice Registration Portal (IRP), which generates an Invoice Reference Number (IRN) and QR code.

Businesses should prepare by:

        i.             Upgrading billing or accounting software

      ii.            Training staff on e-invoice generation

   iii.             Testing system integration with IRP

    iv.            Ensuring real-time invoice reporting capability

Early preparation prevents disruption to business operations once the requirement becomes mandatory.

7.   Reverse Ineligible Input Tax Credit

Certain expenses are not eligible for ITC under Section 17(5) of GST law.

Common blocked credits include:

        i.            Personal motor vehicles

      ii.            Food and beverages (except in specific cases)

   iii.             Club memberships

    iv.            Personal consumption expenses

      v.           Certain employee-related benefits

If ITC has been wrongly claimed during the year, it should be reversed before March 31.

Failure to do so may result in:

        i.             Recovery of tax

      ii.             Interest liability (18% per annum)

   iii.             Possible penalties

A thorough review of expense accounts is essential to identify such credits.

8.   Cross Charge or ISD — Allocate Common Expenses Correctly

Businesses operating across multiple states typically incur shared expenses such as:

        i.            Corporate management services

      ii.            IT and software subscriptions

   iii.             Marketing expenses

    iv.           Administrative overheads

Under GST, these costs must be allocated appropriately between registrations using either:

       I.            Cross Charge Method

One registration charges GST to another.

     II.            Input Service Distributor (ISD) Mechanism

Centralized distribution of ITC.

Improper allocation can lead to disputes during audits and may result in denial of credit.

Start a New Invoice Number Series for FY 2026–27

GST rules require businesses to maintain a unique invoice numbering system for each financial year.

From April 1, 2026, a new series should be introduced for:

        i.            Tax invoices

      ii.            Bills of supply

   iii.             Credit notes

    iv.            Debit notes

A fresh numbering system helps maintain organized records and prevents duplication or reporting errors.

Final Thoughts: Treat Year-End as a GST Health Check

The end of the financial year should not be seen merely as an accounting formality. It is an opportunity to conduct a complete GST compliance review and rectify issues before they escalate.

Businesses that proactively complete these year-end tasks benefit from:

                                  i.            Reduced risk of penalties and notices

                                ii.            Better cash flow management

                              iii.            Accurate tax reporting

                              iv.            Strong compliance reputation

                                v.            Smooth start to the new financial year

For accountants, tax consultants, and business owners, adopting a structured year-end GST checklist can significantly improve compliance efficiency and minimize future complications.