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GSTR-2B mismatch: why it happens and how to fix it

Updated 21 October 2026

GSTR-2B is the monthly statement of input tax credit, prepared from what your suppliers report in their GSTR-1. If a bill is in your books but not in GSTR-2B (or the amounts differ), you may not be able to claim that credit yet.

Common causes

  • The supplier filed late, so the invoice appears in a later month's GSTR-2B.
  • The supplier used a wrong GSTIN for you, or reported a different invoice number, date or amount.
  • You entered the bill with a typing error: GSTIN, invoice number, taxable value or tax.
  • The bill was entered twice, or not at all.

A monthly routine

  1. Collect every purchase bill of the month in one place, as it arrives, not at the end.
  2. Enter them with the exact supplier invoice number and GSTIN.
  3. Download GSTR-2B when it is available and compare it with your purchase register (TallyPrime has a GSTR-2B reconciliation report).
  4. For each difference, check your entry first; if your entry is right, ask the supplier to correct or file their GSTR-1.
  5. Keep the invoices: you will need them for any notice or audit.

Soni Vault keeps every bill of the month with its GSTIN and invoice number read and checked, flags probable duplicates, and sends the bills to Tally exactly as printed, so your side of the match is right.

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This guide is general information, not tax advice. Ask your CA about your own case.