Why your input tax credit was rejected, and what actually fixes it
By the bookledger team· ·6 min read
You paid the supplier. You have the tax invoice. The credit was still disallowed. That is not a mistake — it is how the rule works now, and the invoice in your drawer stopped being the thing that decides.
What changed: the invoice is no longer enough
Section 16(2) has always listed conditions for claiming input tax credit — a valid invoice, receipt of the goods or services, tax actually paid to the government, and your own return filed. Clause (aa) added the one that catches people: the credit must also appear in your GSTR-2B.
GSTR-2B is built from what your suppliers filed. So a condition for your credit is now someone else's compliance. If they have not reported the invoice, the credit is not yours to take yet — however complete your own paperwork is.
2A and 2B are not the same statement
| GSTR-2A | GSTR-2B | |
|---|---|---|
| Changes over time | Yes — updates whenever a supplier files | No — static once generated |
| Decides your eligible credit | No | Yes |
| Use it for | Watching a supplier catch up | The figure you actually claim |
Reconciling against 2A feels productive and proves nothing. The number that has to match your GSTR-3B is the one in 2B.
The deadline most people get wrong
Under Section 16(4), credit for an invoice must be claimed by the earlier of:
- —30 November of the year following the invoice's financial year, or
- —the date you file the annual return for that year.
Whichever comes first. File your annual return in September and the November date is gone — it was never a second chance, and a supplier who files late in December has cost you the credit permanently.
Where mismatches actually come from
Almost all of them are one of five things, and only the first is your fault:
- 01Wrong GSTIN on your side. Your supplier filed it against a different number, so it lands in nobody's 2B.
- 02Supplier filed late. The credit shows up in a later month's 2B than your books expect.
- 03Supplier did not file at all. Nothing arrives, and no amount of reconciliation on your side creates it.
- 04Credit notes. They reduce your credit and are easy to book as a discount instead, which leaves your figure higher than 2B's.
- 05Reverse charge and imports. These follow their own path and are frequently double-counted.
A routine that keeps you out of it
Monthly, before you file GSTR-3B:
- 01Download GSTR-2B for the period. Not 2A.
- 02Match it against your purchase register, invoice by invoice, on GSTIN and invoice number.
- 03Claim only what appears in 2B. Park the rest — do not claim and hope.
- 04Chase the parked ones now, while the supplier still remembers the sale.
- 05Before 30 November each year, clear anything still parked from the previous financial year. After that date it is gone.
Claiming credit that is not in 2B and arguing later is the expensive path. Departments have been issuing notices on exactly this mismatch, and the interest runs from the original period, not from the notice.
Where the software helps
The work is matching two lists and chasing the difference. What makes it painful is a purchase register that cannot be matched: a supplier recorded without a GSTIN, an invoice number typed differently from how the supplier typed it, a credit note booked as a discount.
bookledger holds the GSTIN on the supplier record rather than on each bill, keeps credit notes as credit notes, and produces a GSTR-2B reconciliation that shows what is in 2B, what is in your books, and which invoices are only in one of them — which is the list you actually have to act on.
Common questions
Why was my ITC rejected when I have the invoice?
Because since Section 16(2)(aa) the invoice is not sufficient. The credit also has to appear in your GSTR-2B, which only happens once the supplier reports it.
What is the last date to claim ITC?
The earlier of 30 November of the following financial year, or the date you file that year's annual return.
Should I reconcile against 2A or 2B?
2B. 2A keeps moving; 2B is the statement your eligibility is measured against.
My supplier has not filed. What now?
Do not claim it yet. Chase them, and claim it in the period it appears — provided you are still inside the Section 16(4) deadline.
Last reviewed 27 September 2026. GST provisions and deadlines change by notification. Check the current position on the GST portal, or with your accountant, before relying on a figure here.