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GST Rule 37A: ITC Reversal When Supplier Has Not Filed GSTR-3B

Rule 37A requires reversal where supplier invoices were reported in GSTR-1/IFF but the supplier did not file the corresponding GSTR-3B by the statutory cut-off.

By Team assureOffice
Published 2026-09-21 · Updated 2026-09-21

Rule 37A addresses a specific mismatch: the supplier has reported the invoice in GSTR-1 or IFF, but has not furnished the corresponding GSTR-3B.

When does Rule 37A become relevant?

Where ITC has been availed on such an invoice and the supplier has not filed the corresponding GSTR-3B by 30 September following the end of the financial year, the recipient must review the reversal requirement.

When should reversal be made?

The rule requires the relevant ITC to be reversed in GSTR-3B on or before 30 November following the end of that financial year.

If the reversal is not made within the prescribed time, the amount can become payable with interest.

Can ITC be reclaimed?

Where the supplier subsequently furnishes the relevant GSTR-3B, the recipient can re-avail the credit subject to the prescribed conditions.

Practical workflow

  • Identify affected invoices supplier-wise.
  • Track supplier GSTR-3B filing status.
  • Separate Rule 37A reversal from permanent blocked credit.
  • Maintain a re-availment tracker.

GSTR-2B appearance alone does not close the compliance review. Supplier return filing can still matter.