ITC Reversal & Reclaim Update

Input Tax Credit reversal under GST is triggered when the recipient does not pay the supplier within 180 days (Rule 37), when the supplier fails to file GSTR-3B by 30 September of the following year (Rule 37A), or when common credits are used for exempt supplies (Rules 42 and 43). Reversal is reported in Table 4B(2) of GSTR-3B. The credit can be reclaimed once the trigger is resolved, through Table 4D(1). The Electronic Credit Reversal and Reclaimed Statement on the GST portal tracks every entry.

Mayank Wadhera

Published: 2 Sept 2023

Updated: 16 May 2026

4 min read

Input Tax Credit reversal under GST is no longer a once-a-year cleanup. With the introduction of Rule 37A, Rule 88B and the Electronic Credit Reversal and Reclaimed Statement on the GST portal, every registered person must track reversals and reclaims with the precision of a ledger. For FY 2026-27, the design is settled and the enforcement is real.

Why ITC reversal exists

ITC reversal is the indirect tax equivalent of a clawback. The CGST Act, 2017 allows credit only on inward supplies used in taxable business. When supplies are exempt, used for non-business purposes, or where the supplier fails to pay tax to the government, the credit must be reversed. Without reversal rules, the input chain would break and unmatched credits would accumulate.

Major reversal triggers

Rule 37: Non-payment to the supplier within 180 days of invoice
Rule 37A: Supplier failure to file GSTR-3B by 30 September of the following year
Rule 42 and 43: Common credits used partly for taxable and partly for exempt supplies
Sale of capital goods before completion of the prescribed useful life
Goods lost, stolen, destroyed, written off, or disposed of by way of gift or free samples

Reclaim mechanism

ITC reversed under Rule 37 can be reclaimed once the payment is made to the supplier. ITC reversed under Rule 37A can be reclaimed once the defaulting supplier files the missing GSTR-3B and pays the tax. Reclaim is now captured separately on the GST portal through the Electronic Credit Reversal and Reclaimed Statement (ECRRS), which acts as a perpetual ledger of every reversal and matching reclaim.

ECRRS: the new ledger every taxpayer must maintain

Log in to the GST portal and access the Electronic Credit Reversal and Reclaimed Statement under Services > Ledgers.
Confirm the opening balance reported as at the prescribed cut-off date.
Record every reversal in GSTR-3B Table 4B(2) with appropriate sub-classification.
Record every reclaim in Table 4D(1) along with the invoice details supporting the reclaim.
Reconcile ECRRS at quarter-end with internal books and document the audit trail.

Practical issues finance teams face

Tracking supplier filing status for Rule 37A requires monthly GSTR-2B monitoring.
Reversal of common credits under Rule 42 and 43 needs accurate split of exempt versus taxable turnover.
Reclaim more than the corresponding reversal generates a system warning and potential notice.
ITC reversed on goods lost or destroyed cannot be reclaimed and must be permanently expensed.

Documentation that supports every reversal and reclaim

Audit-ready ITC reversal requires more than a GSTR-3B entry. Maintain a per-invoice reversal register with the original invoice number, supplier GSTIN, reversal reason (Rule 37, 37A, 42, 43, lost goods, etc.), reversal date, and the GSTR-3B period in which it was reported. For Rule 42 and 43 reversals, retain the working sheet showing the split of exempt and taxable turnover and the application of the formula. For Rule 37A reversals, screenshot the supplier's GSTR-3B filing status from the GST portal as evidence. When reclaiming, document the underlying trigger resolution — payment proof for Rule 37, supplier's filed GSTR-3B for Rule 37A — and link it to the GSTR-3B period of reclaim. This documentation is the difference between a clean audit and a disputed assessment.

Common audit observations and how to defend them

GST audits routinely flag ITC issues. Frequent observations include ITC on personal expenses, ITC on goods or services blocked under Section 17(5), ITC on invoices from cancelled or non-existent suppliers, mismatched ITC between books and GSTR-2B, and missed reversals under Rule 37 or Rule 37A. Defend each observation with documentation: invoice copies, e-way bills, GR/transport documents, payment proofs, supplier GSTR filing screenshots, and the ECRRS extract showing every reversal and reclaim. If the auditor demands aggregate reversal, contest where the underlying conditions for ITC eligibility are clearly met. A clean ECRRS combined with an organised invoice repository is the single best defence in any GST audit.

Conclusion

ITC reversal and reclaim under GST is now a continuous, ledger-driven exercise rather than an annual reconciliation event. In FY 2026-27, treat the ECRRS as a core compliance dashboard. Build a monthly process: identify reversal triggers, post the reversal in GSTR-3B, follow up with suppliers for resolution, and reclaim through the same return once eligibility returns. The mechanics are mature — the only variable is your discipline.

Frequently Asked Questions

What is the time limit to reclaim ITC under Rule 37?

ITC reversed under Rule 37 for non-payment to the supplier can be reclaimed in the month in which payment is made, without any time limit on the reclaim itself, provided the original credit was within the limitation under Section 16(4). Reclaim is reported in Table 4D(1) of GSTR-3B.

How is the ECRRS different from the Electronic Credit Ledger?

The Electronic Credit Ledger captures the running balance of ITC available, while the Electronic Credit Reversal and Reclaimed Statement (ECRRS) is a separate sub-ledger that captures the cumulative position of reversals and reclaims. ECRRS prevents reclaim from exceeding the corresponding reversal.

When is Rule 37A triggered?

Rule 37A requires reversal of ITC when the supplier has not filed GSTR-3B for the relevant tax period by 30 September of the following financial year. The recipient must reverse the ITC by 30 November of that year. If the supplier later files the return, the ITC can be reclaimed.

Is ITC on free samples reversible?

Yes. ITC on inputs used for goods given as free samples, gifts or destroyed goods is not eligible under Section 17(5) of the CGST Act and must be reversed. Such reversal cannot be subsequently reclaimed because the underlying ineligibility is permanent.