Managing vendor payables against Input Tax Credit (ITC) requires strict adherence to statutory payment timelines under GST law. While taxpayers claim inward tax credit based on valid invoices and GSTR-2B reflection, the law attaches a condition of prompt payment to the vendor. When commercial disputes, delayed approvals, or working capital constraints push invoice settlements beyond 180 days, businesses face mandatory credit reversals accompanied by running interest liabilities.
Statutory mandate under Section 16(2) and Rule 37
The statutory foundation for the 180-day reversal rule rests in the second proviso to Section 16(2) of the CGST Act. The statute provides that where a recipient fails to pay the supplier the amount towards the value of supply along with tax payable thereon within a period of 180 days from the invoice date, an amount equal to the input tax credit availed must be paid along with interest under Section 50.
The detailed operational mechanism is set out in Rule 37 of the CGST Rules. Key legal elements of this requirement include:
- Scope of transactions: The rule applies to all taxable inward supplies of goods or services where credit was availed, excluding supplies subject to reverse charge under Section 9(3) or Section 9(4). Supplies made without consideration as specified in Schedule I are also deemed paid.
- Proportionate calculation: If you make a partial payment to the vendor within 180 days, you only reverse credit proportionate to the unpaid invoice balance.
- Due date for reversal: The reversal must be furnished in the return in Form GSTR-3B for the tax period immediately following the expiry of 180 days.
- Interest liability under Section 50(1): Interest runs at 18 percent per annum from the date of availing the credit in GSTR-3B until the date the reversal is discharged.
Common mistake: Counting 180 days from the date of goods receipt or material inspection instead of the invoice issue date. The payment condition in Section 16(2) explicitly states that the 180-day countdown begins from the date of issue of invoice by the supplier.
Reporting Rule 37 reversal in Form GSTR-3B
In accordance with CBIC Circular No. 170/02/2022-GST and the official GSTN GSTR-3B User Manual, reporting of credit reversals in Table 4 of Form GSTR-3B is bifurcated based on whether the reversal is permanent or reclaimable:
- Table 4(B)(1) permanent reversals: Strictly reserved for reversals that are absolute in nature and cannot be reclaimed later, such as blocked credits under Section 17(5), banking reversals under Rule 38, and exempt ratio reversals under Rule 42 and Rule 43.
- Table 4(B)(2) reclaimable reversals: Designated for temporary reversals that can be reclaimed in the future upon fulfilling statutory conditions. Rule 37 non-payment reversals must always be reported in Table 4(B)(2).
Entering Rule 37 reversals in Table 4(B)(1) creates audit reconciliation complications because the GST portal and departmental audit systems treat Table 4(B)(1) entries as final cancellations of tax credit.
Reporting in Form GSTR-9 Table 7: Details of ITC reversed
When compiling your annual return under Rule 80 of the CGST Rules, Table 7 of Form GSTR-9 captures all credit reversals and ineligible credits for the financial year. Table 7 breaks down the annual sum of reversals into specific statutory clauses:
| GSTR-9 Table | Description | Corresponding GSTR-3B reporting | Nature of reversal |
|---|---|---|---|
| Table 7A | As per Rule 37 | Table 4(B)(2) (Rule 37 portions) | Temporary / Reclaimable |
| Table 7B | As per Rule 39 | Table 4(B)(2) (ISD credit notes) | Permanent adjustment |
| Table 7C | As per Rule 42 | Table 4(B)(1) (Inputs and input services) | Permanent reversal |
| Table 7D | As per Rule 43 | Table 4(B)(1) (Capital goods reversal) | Permanent reversal |
| Table 7E | As per Section 17(5) | Table 4(B)(1) (Ineligible blocked credits) | Permanent reversal |
| Table 7H | Other reversals | Table 4(B)(2) (Other temporary reversals) | Temporary / Reclaimable |
| Table 7I | Total ITC reversed (Sum of 7A to 7H) | Sum of Table 4(B) from all 12 returns | Total annual reversal |
In Form GSTR-9, Table 7A is an editable field. You must extract all Rule 37 reversals made across your 12 monthly GSTR-3B returns and enter the consolidated figures for Central Tax, State Tax, and Integrated Tax. The total in Table 7I reduces your gross credit from Table 6O to determine Net ITC Available for Utilization in Table 7J.
For a detailed breakdown of how gross credits are reconciled in the preceding table, read our step-by-step guide on GSTR-9 Table 6 ITC availed bifurcation from books. If your business also handles exempt supplies, refer to our companion walkthrough on ITC reversal Rule 42 common credit formula.
Notice risk: If your audited financial statements show trade payables outstanding for more than 180 days and Table 7A of Form GSTR-9 reflects zero, tax authorities issue discrepancy notices during desk scrutiny under Section 61, demanding reversal with interest.
Reclaiming reversed ITC under Section 16(2) third proviso
Reversing credit under Rule 37 is not a permanent loss of tax benefit. The third proviso to Section 16(2) states that the registered recipient is entitled to avail the credit of input tax on payment made to the supplier towards the value of supply plus tax.
Under Rule 37(4) clarifies that the time limitation stipulated in Section 16(4) does not apply to re-availment of credit reversed under Rule 37. You can reclaim this credit even after the 30 November cutoff following the close of the financial year, provided actual payment has been remitted to the vendor.
When reclaiming credit in monthly Form GSTR-3B:
- Include the reclaimed amount in Table 4(A)(5) (All other ITC) of Form GSTR-3B for the tax period in which payment was executed.
- Separately report the reclaimed amount in Table 4(D)(1) (ITC reclaimed which was reversed under Table 4(B)(2) in earlier tax period). This informs the system that the higher claim in Table 4(A)(5) is a valid re-availment rather than an unbacked credit.
In Form GSTR-9, if the credit was reclaimed in the same financial year, it is reported under Table 6H. If the credit was reclaimed in the subsequent financial year up to the specified period, report it in Table 13 of Form GSTR-9 for the earlier year.
Worked numerical example: 180-day reversal, interest, and reclaim
Consider Precision Tools Private Limited, a registered engineering firm in Maharashtra. On 10 May 2024, the company receives raw materials accompanied by an invoice from an interstate vendor in Gujarat:
| Invoice parameter | Details | Amount (₹) |
|---|---|---|
| Invoice Number and Date | INV-8421 dated 10 May 2024 | 10 May 2024 |
| Taxable Value | Precision steel components | ₹10,00,000 |
| Integrated Tax (IGST at 18%) | Reflected in GSTR-2B for May 2024 | ₹1,80,000 |
| Total Invoice Value Payable | Taxable value plus IGST | ₹11,80,000 |
| ITC Availment Date in GSTR-3B | Claimed in GSTR-3B of May 2024 filed on 20 June 2024 | ₹1,80,000 |
180 days countdown and reversal trigger
The 180-day period begins on 10 May 2024 (invoice date). Counting the days elapsed:
- May 2024: 21 days (31 minus 10)
- June 2024: 30 days (total 51 days)
- July 2024: 31 days (total 82 days)
- August 2024: 31 days (total 113 days)
- September 2024: 30 days (total 143 days)
- October 2024: 31 days (total 174 days)
- November 2024: 6 days (total 180 days completed on 6 November 2024)
Due to quality inspection holds, Precision Tools Private Limited made no payment to the supplier on or before 6 November 2024. Consequently, the company must reverse ₹1,80,000 in Form GSTR-3B for the tax period immediately following 180 days, which is the November 2024 return filed on 20 December 2024.
Interest computation under Section 50(1)
Under Section 50(1) of the CGST Act, interest is payable at 18 percent per annum from the date of availing the credit (20 June 2024) to the date of reversal (20 December 2024):
- June 2024: 10 days (30 minus 20)
- July 2024: 31 days
- August 2024: 31 days
- September 2024: 30 days
- October 2024: 31 days
- November 2024: 30 days
- December 2024: 20 days
- Total period of default: 183 days
Interest calculation formula:
Interest = ₹1,80,000 × 18% × (183 / 365) = ₹16,243
Precision Tools Private Limited enters ₹1,80,000 under Table 4(B)(2) in its November 2024 GSTR-3B and pays ₹16,243 interest through the electronic cash ledger.
Subsequent payment and credit reclaim
On 10 July 2025, commercial terms are finalized and Precision Tools Private Limited pays the entire ₹11,80,000 to the supplier via bank transfer. In its GSTR-3B for July 2025 (filed 20 August 2025):
- The company re-avails ₹1,80,000 in Table 4(A)(5).
- The company reports ₹1,80,000 in Table 4(D)(1) as reclaimed credit.
Note on interest: While the tax credit of ₹1,80,000 is fully reclaimed upon payment, the interest of ₹16,243 paid under Section 50(1) is a statutory compensatory levy and is not refundable or recoverable from the tax department.
Internal communication template for vendor aging audit
To prevent unplanned interest costs, finance teams should run monthly 150-day aging reports and notify commercial managers before the 180-day deadline expires:
Audit preparation for Form GSTR-9 Table 7A
When compiling Form GSTR-9 for the financial year, reconcile Table 7A using this verification checklist:
- Extract all entries posted to Table 4(B)(2) of Form GSTR-3B across all 12 return periods.
- Isolate Rule 37 reversals from other temporary reversals such as transit delays or Section 16(2)(c) supplier default holds.
- Cross-verify the reversal sum against the 180-day aging schedule generated from your accounts payable sub-ledger.
- Ensure that interest paid under Section 50(1) is reflected in Table 14 of Form GSTR-9 under the interest payable and paid columns.
For cross-checking your inward supply documentation and avoiding year-end mismatches, review our general guidance on all GST reconciliation guides.
Related guides
- GSTR-9C Table 12 reconciliation: reconciling ITC with audited financial statements
- ASMT-10 reply for GSTR-9 Table 8D mismatch: format and legal defence
- GSTR-9 Table 14: reporting differential tax paid in cash with Form DRC-03 reconciliation
- GSTR-9 Table 8D lapsed ITC calculation: causes, mismatch analysis, and Section 73 notice defense
Frequently asked questions
Where is Rule 37 ITC reversal reported in Form GSTR-9?
Rule 37 reversal is reported in Table 7A of Form GSTR-9. This table summarizes the total credit reversed during the financial year on account of non-payment of invoice value plus tax to suppliers within 180 days.
Which table in Form GSTR-3B captures temporary Rule 37 reversals?
Rule 37 reversals are reported in Table 4(B)(2) of Form GSTR-3B as temporary, reclaimable reversals. They must not be entered in Table 4(B)(1), which is reserved strictly for permanent reversals like Section 17(5) and Rule 42 or 43.
How is interest calculated on Rule 37 ITC reversal?
Interest is charged under Section 50(1) at 18 percent per annum. The period runs from the date of availing the credit in Form GSTR-3B up to the date when the reversal is actually discharged on the portal.
Does the Section 16(4) time limit apply to reclaiming Rule 37 credit?
No. Under the third proviso to Section 16(2) and Rule 37(4), you can re-avail the credit whenever you make payment to the supplier, even if the payment happens years later. The annual cutoff under Section 16(4) does not restrict reclaims.
Where do you report the reclaimed credit in Form GSTR-3B and GSTR-9?
In monthly Form GSTR-3B, add the reclaimed amount to Table 4(A)(5) and disclose it in Table 4(D)(1). In Form GSTR-9, if the credit was reclaimed in the same financial year, report it in Table 6H; if reclaimed in the subsequent financial year, report it in Table 13.
Check your own GSTR-2B
Your GSTR-2B and purchase register files are read in your browser and never uploaded to any server. Check missing invoices and tax values instantly.
Last checked: 18 October 2026. Sources: CBIC CGST Act Section 16, CBIC Central Tax Notification 19/2022 (Rule 37), GST Portal Form GSTR-9 Manual.