GSTR-2B Reconciliation: Matching Purchases to Protect Your Input Credit

GSTR-2B, not GSTR-2A

GSTR-2A is dynamic: it changes as suppliers file, amend and backdate. GSTR-2B is static, generated on the fourteenth of each month, covering documents filed by suppliers in the preceding period. It does not change afterwards.

That stability is why GSTR-2B is the statement to reconcile against. It is the snapshot the department will use, and reconciling to a moving target achieves nothing.

The four mismatch types

1. Missing entirely: the supplier has not filed GSTR-1, or filed late. Your credit is simply unavailable this period.

2. Wrong GSTIN: a single mistyped character attributes your credit to a different taxpayer. The invoice exists in the system but not in your 2B.

3. Wrong tax head: the supplier charged CGST and SGST where IGST was due, or the reverse. The amount is right but you cannot use it.

4. Value or rate difference: the invoice in your books says one figure, the filed one says another.

Only the first resolves itself with time. The other three require the supplier to amend, which requires you to notice and ask.

A monthly process that works

Download GSTR-2B after the fourteenth. Match it against your purchase register on invoice number, date, GSTIN and taxable value. Classify every difference into the four types above. Claim credit only on matched entries in GSTR-3B. Chase the unmatched ones with the supplier before the next filing, and hold payment on persistent offenders.

The last step is the one with teeth. A supplier who has been paid has little incentive to amend a return; a supplier awaiting payment has considerable incentive.

The 30 November deadline

Credit for a financial year must be claimed by the thirtieth of November following that year, or the date of filing the annual return, whichever is earlier. After that, unclaimed credit lapses permanently.

For a business reconciling quarterly rather than monthly, that deadline arrives faster than expected — the invoices from the previous April have roughly nineteen months, but the ones from the following March have only eight.

The blocked credits nobody budgets for

Section 17(5) blocks credit on several ordinary business purchases: motor vehicles below the specified seating capacity, food and beverages, outdoor catering, club and health-centre memberships, rent-a-cab, life and health insurance except where obligatory, works contract services for immovable property, and goods lost, stolen, destroyed or given away as free samples.

These are not mismatches and will appear perfectly in your GSTR-2B. Claiming them is a straightforward disallowance with interest at eighteen per cent.

Frequently asked questions

### What is the difference between GSTR-2A and GSTR-2B?

GSTR-2A is dynamic and updates continuously as suppliers file; GSTR-2B is static, generated on the fourteenth of each month, and does not change. Since Section 16(2)(aa), GSTR-2B is the statement that determines your eligible credit.

### What if my supplier never files GSTR-1?

The credit does not appear in your GSTR-2B and cannot be claimed. Your remedy is commercial rather than statutory: withhold the GST component of payment until the invoice is reflected, which is a clause worth putting in purchase terms rather than negotiating after the fact.

### Can I claim ITC on an invoice from a previous year?

Only until 30 November following the end of that financial year, or the date of filing the annual return, whichever is earlier. After that the credit lapses permanently, regardless of whether the invoice was valid.

### Is there still a provisional credit allowance?

No. Rule 36(4) once permitted a percentage of unmatched credit, progressively reduced from twenty per cent to five. Since Section 16(2)(aa) took effect, credit is available only on invoices actually reflected in GSTR-2B, with no provisional margin.