GSTN’s New Annexure-B Offline Utility for ITC Refunds: What Taxpayers Must Know

Introduction

The GST Network (GSTN) has introduced a major procedural update for refund applications involving accumulated Input Tax Credit (ITC). Instead of uploading Annexure-B only in PDF format, taxpayers must now prepare Annexure-B using an Excel-based offline utility and upload it as a JSON file. This change is aimed at improving invoice validation and reducing refund mismatches through system-based verification.

Refund Categories Covered

The new utility applies to refund claims related to:

Export of goods or services without payment of tax
Supplies to SEZ units or developers without payment of tax
Inverted duty structure refunds
Export of electricity without payment of tax

New Invoice Reporting Requirements

One of the biggest changes is the requirement to report invoice details HSN/SAC-wise and classify them under inputs, input services, or capital goods. If an invoice contains multiple HSN or SAC codes, taxpayers must split the invoice into separate line items with proportionate tax allocation. Duplicate invoice entries will not be accepted if supplier GSTIN, invoice number, invoice date, category, and HSN/SAC are identical.

ITC Reversal Reporting Rules

The utility introduces stricter reporting for ITC reversals under Rules 38, 42, 43, and Section 17(5). Taxpayers using multiple utility files must ensure reversal amounts are entered only in the final uploaded file. After submission, the system recalculates consolidated Net ITC automatically.

GSTR-2B Validation Mechanism

Another important update is the integration with GSTR-2B validation. For invoices from November 2024 onwards, mismatches will appear in the Invalid Documents Report during upload validation. Older invoices up to October 2024 may not undergo strict GSTR-2B validation.

Upload Limits and Technical Precautions

GSTN has prescribed upload limits of 10,000 line items per utility file and 2,50,000 line items per refund application. Any invoices beyond this limit must be submitted separately as PDF supporting documents. Taxpayers must also avoid editing JSON files manually, renaming generated files, or copying incorrect dropdown values, as these may lead to upload errors.

Practical Impact on Businesses

The new process makes GST refund filing more data-driven and compliance-focused. Businesses must now maintain stronger reconciliation between purchase registers, GSTR-2B, GSTR-3B, and ITC reversals before filing refund claims. Incorrect HSN/SAC reporting, duplicate invoices, or mismatched ITC records can delay refund approvals.

Conclusion

The new Annexure-B Offline Utility represents a significant step toward automated GST refund verification. Taxpayers should understand the updated reporting structure and validation process to ensure smooth refund filing and faster processing. Proper reconciliation, accurate invoice reporting, and correct JSON uploads will be essential for successful ITC refund claims going forward.