GSTR-9 and 9C Optional vs Mandatory Tables FY 2025-26: Complete Compliance Guide

As the December 31, 2026 statutory deadline approaches for filing annual GST returns for Financial Year (FY) 2025-26, registered taxpayers, chartered accountants, and corporate tax professionals are deep into annual audit reconciliations. Under Section 44 of the CGST Act, 2017, read with Rule 80, navigating the complex architecture of GSTR-9 (Annual Return) and GSTR-9C (Reconciliation Statement) requires absolute precision.

A recurring challenge for finance teams during every annual filing cycle is distinguishing between optional and mandatory reporting tables. Incorrectly skipping a table deemed optional or failing to populate fields correctly can trigger automated portal mismatches or notice scrutiny from tax authorities.

Executive Summary & Statutory Thresholds for FY 2025-26

Before diving into table-level mechanics, let's review the statutory applicability thresholds for the financial year:

• Aggregate Turnover Up to Rs 2 Crore: GSTR-9 filing is exempt/optional (pursuant to continuing exemption notifications). However, filing voluntarily is widely recommended by experts to keep historical compliance records clean.
• Aggregate Turnover Above Rs 2 Crore up to Rs 5 Crore: GSTR-9 is mandatory, but GSTR-9C remains optional unless chosen voluntarily.
• Aggregate Turnover Above Rs 5 Crore: Both GSTR-9 and GSTR-9C (self-certified reconciliation statement) are mandatory. 

Crucial Pre-Filing Trap: Remember that GSTR-9 cannot be revised once submitted. Furthermore, filing GSTR-9 prematurely before claiming all eligible Input Tax Credit (ITC) for FY 2025-26 (up to the November 30 cut-off) can permanently forfeit your ITC claim.

Decoding GSTR-9 Tables: Optional vs. Mandatory Split

GSTR-9 is structured into 6 Parts spanning 19 tables. While several relaxations have been introduced in recent years, tax practitioners must understand which tables require mandatory disclosures and which remain optional:

GSTR-9C Reconciliation Statement: Key Focus Areas

For entities with an aggregate turnover exceeding Rs 5 Crore , GSTR-9C bridges audited financial statements with the filed GSTR-9. Since external CA certification was replaced by self-certification, the responsibility of flawless reconciliation rests squarely on internal finance teams and management.

1. Part A: Reconciliation of Turnover (Table 5 to 8)

Reconciling gross turnover per audited financial statements with taxable turnover reported in GSTR-9 requires meticulous documentation of reconciling items: unbilled revenue, advance receipts, credit notes issued outside statutory timelines, and non-GST supplies.

2. Part B: Reconciliation of Input Tax Credit (Table 12 to 14)

The reconciliation must map general ledger expense accounts (legal fees, freight, advertising, RCM liabilities, and capital goods additions) against Table 8 of GSTR-9 and actual GSTR-2B availability. Any uncovered tax deficits or excess ITC claims must be addressed immediately via Form DRC-03 with applicable interest under Section 50.

Step-by-Step Compliance Checklist for FY 2025-26

• Complete All Monthly Filings: Ensure all GSTR-1 and GSTR-3B returns for FY 2025-26 are successfully filed before initiating annual returns.
• Exhaust ITC Claims First: Finalize all eligible ITC adjustments and claim pending credits in GSTR-3B before locking down GSTR-9.
• Verify HSN Mandates: Ensure 6-digit HSN codes are accurately populated in Table 17 for turnover exceeding Rs 5 Crore.
• Discharge Liabilities via DRC-03: Pay any identified shortfalls or misclassifications through DRC-03 and reference the challan numbers correctly in the annual return.

Professional Advisory & Reference

Annual return filing is not merely a data-entry exercise; it is the final legal defense mechanism against retrospective tax audits and departmental notices. Establishing robust pre-filing reconciliation protocols protects businesses from heavy late fees (Rs 200 per day capped at 0.25% of turnover) and avoidable litigation.