Annual GST compliance requires full harmony between financial accounts, monthly self-assessments, and statutory annual filings. Under Section 39(1) of the CGST Act, every normal registered person files monthly returns and pays tax due on or before the prescribed due date. At year end, registered persons file an annual return under CGST Rules Rule 80(1) in Form GSTR-9. Where aggregate turnover exceeds five crore rupees, Rule 80(3) mandates furnishing a self-certified reconciliation statement in Form GSTR-9C.
Mapping Table 4 and net tax payable across annual returns
In statutory terminology, Form GSTR-9C Part I Table 4 records whether the business is subject to audit under any other law, such as the Companies Act or Income-tax Act. However, when practicing accountants investigate net tax payable liability, they focus on outward supplies reported in Form GSTR-9 Table 4 and rate-wise tax computations in Form GSTR-9C Table 9.
Form GSTR-9 Table 4 captures all advances, inward supplies liable to reverse charge, and outward taxable supplies made during the financial year on which tax is payable. Form GSTR-9C Part III Table 9 takes the taxable turnover reconciled from audited books and applies GST rates (such as 5%, 12%, 18%, and 28%) to calculate total tax payable. The system compares this computed tax against total tax paid declared in Form GSTR-9 Table 9, which represents the cumulative tax discharged through monthly Form GSTR-3B filings.
Common mistake: Assuming that tax paid in monthly Form GSTR-3B automatically matches audited liability without checking rate-wise splits. If sales were booked at 18% in audited accounts but mistakenly reported at 12% in monthly returns, a net tax shortfall emerges in GSTR-9C Table 9 even when gross turnover figures match.
Key reconciliation checkpoints across returns
- Audit baseline: Confirm filing status under Form GSTR-9C Part I Table 4 and verify turnover limits under Rule 80(3).
- Outward supply declaration: Match audited sales ledgers with GSTR-9 Table 4, isolating B2B, B2C, export, and reverse charge liability lines per the GSTN GSTR-9 user manual.
- Rate-wise tax valuation: Enter audited taxable values into GSTR-9C Table 9 to compute total payable tax across Central Tax, State Tax, Integrated Tax, and Cess.
- Comparison with tax paid: Contrast calculated liability against actual tax discharged in Form GSTR-3B filings recorded in GSTR-9 Table 9.
- Credit adjustments: Review input tax credit interactions in our GSTR-9 Table 8 reconciliation formula guide to verify whether credit reversals under Rule 37 or ISD distributions under Rule 39(1)(e) affect net cash liabilities.
Worked example: reconciling rate-wise liability and net tax shortfall
Consider an industrial equipment supplier in Pune with an annual turnover of ₹12,00,00,000, exceeding the five crore threshold under Rule 80(3). During annual audit reconciliation, the accounts team compares audited revenue with monthly Form GSTR-3B filings submitted under Section 39(1):
| Tax Rate Head | Audited Taxable Value | Calculated Tax (GSTR-9C Table 9) | Tax Paid in GSTR-3B (GSTR-9 Table 9) | Net Variance (Shortfall) |
|---|---|---|---|---|
| 18% Taxable Supplies | ₹10,00,00,000 | ₹1,80,00,000 | ₹1,77,00,000 | + ₹3,00,000 |
| 12% Maintenance Contracts | ₹2,00,00,000 | ₹24,00,000 | ₹24,00,000 | ₹0 |
| Total | ₹12,00,00,000 | ₹2,04,00,000 | ₹2,01,00,000 | + ₹3,00,000 |
The reconciliation reveals an unreconciled tax shortfall of ₹3,00,000 (comprising ₹1,50,000 Central Tax and ₹1,50,000 State Tax). This shortfall occurred because two late invoices issued in February were inadvertently omitted from monthly Form GSTR-3B returns.
Discharging differential tax liability
Under official Form GSTR-9 instructions, additional liabilities declared during annual return preparation cannot be adjusted inside Form GSTR-9 or set off against electronic credit balances. The taxpayer must pay the shortfall in cash through Form GST DRC-03 by choosing Annual Return in the dropdown menu.
In addition to principal tax, the taxpayer computes mandatory interest under Section 50(1) of the CGST Act at the rate of 18% per annum. For an average payment delay of 120 days on the ₹3,00,000 shortfall, the interest calculation is:
Formula: ₹3,00,000 × 18% × (120 ÷ 365) = ₹17,753
The business deposits ₹3,00,000 principal plus ₹17,753 interest via electronic cash ledger, uploads Form GSTR-9, and attaches the self-certified Form GSTR-9C with full reconciliation disclosures in Table 10 and Table 11.
Frequently asked questions
What is the function of Table 4 in Form GSTR-9C?
In Form GSTR-9C, Part I Table 4 captures whether the registered person is liable to audit under any Act other than the CGST Act. Taxpayers reconciling net tax payable link this audit baseline with outward supplies declared in GSTR-9 Table 4 and rate-wise liabilities in GSTR-9C Part III Table 9.
Who is required to file Form GSTR-9C?
Under Rule 80(3) of the CGST Rules, every registered person whose aggregate turnover during a financial year exceeds five crore rupees must submit a self-certified reconciliation statement in Form GSTR-9C along with the annual return.
Can an additional tax liability identified in reconciliation be settled using ITC?
No. Under Form GSTR-9 instructions and statutory rules, additional liabilities declared in annual return reconciliations must be paid in cash through Form GST DRC-03 by choosing the Annual Return cause of payment.
Check your own GSTR-2B
Verify your vendor invoices and input tax credit before finalizing annual return reconciliations. Your GSTR-2B and purchase register files are read in your browser and never uploaded to any server.
Last checked: 22 October 2026. Sources: CBIC Tax Information Portal, GSTN Returns Portal Manual.