How to Reconcile GSTR-2B with Your Purchase Register

GSTR-2B is the auto-drafted input tax credit statement for each tax period. It is built from what your suppliers report in their returns, and the credit you can claim is tied to it. Reconciling it with your books every month is the most useful single GST habit a business can build.

What GSTR-2B is, and what it is not

• It is a fixed statement for one tax period. It does not change after it is generated.
• It lists credit that is available and credit that is not, with the reason.
• It is not your books. A bill missing from GSTR-2B could be a supplier's delay, a typing error, or a bill you recorded in the wrong month.

Why it matters

Input tax credit can generally be claimed only for invoices that appear in GSTR-2B, subject to the other conditions in the law. Claiming more than the statement shows invites mismatches, notices and reversals with interest. One of our case notes shows how an excess-credit allegation was handled in a real order.

A step-by-step method

1. Download the month's GSTR-2B from the GST portal once it is available.
2. Export your purchase register for the same period with supplier GSTIN, invoice number, invoice date, taxable value and tax.
3. Match on supplier GSTIN and invoice number first. Allow for formatting differences such as spaces, hyphens and leading zeros.
4. Sort the result into four groups: matched; in GSTR-2B but not in your books; in your books but not in GSTR-2B; matched but with different amounts.
5. Act on each group. Record genuine purchases missing from your books. Follow up with suppliers for invoices missing from GSTR-2B. Correct amount differences. Do not accept invoices that are not yours.
6. Do not claim credit for invoices that are not in GSTR-2B. Hold them until they appear.
7. Compare the credit you claim in GSTR-3B with your reconciliation, and keep the working.

Common causes of mismatches

• The supplier filed late, or reports quarterly.
• A typing error in the GSTIN or invoice number.
• The invoice date falls in a different period from where you booked it.
• A credit or debit note is not recorded on one side.
• The credit appears in the "not available" part of the statement because of a restriction.

Points that sit outside the statement

• Reverse charge on domestic purchases is self-declared, so check it separately.
• Credit that is blocked under the law is not available even if the invoice appears in GSTR-2B.
• If you do not pay a supplier within the prescribed period, the credit may have to be reversed with interest. Track your payables ageing for this.

For the wider routine, see our monthly GST reconciliation checklist and GST services.

Official sources

• GST portal

More to read

• GST Compliance Checklist for Small Businesses
• GST Notice Received: A Practical Response Checklist
• GST Reconciliation: What Business Owners Should Check Every Month