GSTR-2B reconciliation: match your purchase bills monthly

Input tax credit (ITC) is money. Every rupee of GST you paid on purchases can reduce the GST you pay on sales, but only if the invoice shows in your GSTR-2B. Reconciling GSTR-2B with your purchase bills every month is how you make sure you claim everything you are owed, and nothing you are not.

Why GSTR-2B decides your ITC

GSTR-2B is a monthly statement of input tax credit, built from what your suppliers report in their GSTR-1, from imports recorded by customs, and from a few other sources. Since section 16(2)(aa) of the CGST Act came into force, you can claim ITC only on invoices that appear in it.

Two things shape the monthly routine:

• The 14th. GSTR-2B for a month is available on the 14th of the next month.
• The Invoice Management System (IMS). Since 01-10-2024, you can accept, reject or keep pending each invoice your suppliers report, before it lands in GSTR-2B. Anything you do not act on is treated as accepted. If you act after the 14th, recompute GSTR-2B before you file GSTR-3B.

Since the October 2025 tax period, you can also keep certain credit notes pending and declare how much ITC you are reversing on a credit note you accept.

A monthly routine that works

1. Record every purchase bill for the month, with the vendor’s GSTIN, the vendor’s bill number exactly as printed, the date and the tax.
2. Review the IMS in the first two weeks. Reject invoices that are not yours or are clearly wrong, and keep pending the ones you are still checking.
3. Download GSTR-2B from the GST portal on or after the 14th.
4. Match each invoice in 2B to a bill in your books, by GSTIN, bill number, date and amounts.
5. Act on every difference (see below) and write down what you did.
6. Claim ITC in GSTR-3B only for what is in 2B and eligible. Note the bills you are holding and check for them next month.

Most businesses can finish this in an hour or two once the habit is in place. The first month takes longer.

Common mismatches and what to do

In your books, not in GSTR-2B. The vendor has not filed GSTR-1, filed it late, or reported it under a wrong GSTIN. Hold the credit. Send the vendor the bill details and ask them to report it. It will appear in a later month’s 2B once they do.

In GSTR-2B, not in your books. Either the bill has not reached your accounts team, or it is not your purchase. Find the bill and enter it. If it is not yours, reject it in the IMS and tell the vendor.

Tax or taxable value differs. Check the bill against your entry first; a typing error on your side is common. If your entry is right, ask the vendor to amend their GSTR-1. Claim only what is correct and supported by the bill.

Bill number differs. “INV/045”, “INV-45” and “45” may be the same bill. Match on the number as the vendor printed it, and always enter vendor bill numbers exactly as they appear.

Date or period differs. The vendor may have reported the bill in another month. Match it across months rather than treating it as missing.

IGST instead of CGST and SGST, or the reverse. The vendor has charged the wrong type of tax for the place of supply. You cannot simply move the credit from one head to another. Ask the vendor for a corrected invoice or credit note.

Wrong GSTIN. If the vendor used your other branch’s GSTIN, the credit sits with that registration. Ask for a corrected invoice.

Credit notes from vendors. A credit note in 2B reduces your ITC. Make sure the matching debit note or adjustment is in your books.

Blocked credits. Some items appear in 2B but are not eligible, such as most motor vehicles and food and beverages under section 17(5). Keep them out of your claim.

Imports. IGST paid on imported goods comes into 2B from customs, against your bill of entry. Match it to the bill of entry, not a vendor invoice.

Two other rules that affect the credit

• Pay your vendor within 180 days. If you do not pay a vendor within 180 days of the invoice date, reverse the ITC you took with interest, and reclaim it when you pay (Rule 37).
• The time limit. You can claim ITC for a financial year only until 30 November of the next year, or the date you file the annual return, whichever is earlier. A bill that appears in 2B too late is lost, so chase vendors early.

Doing it in EaseDesk

Open Reports → GSTR-2B reconciliation, pick your GSTIN and the month, and upload the GSTR-2B file you downloaded from the portal. EaseDesk matches each supplier invoice to your purchase bills and marks it Matched, Differs or In 2B, not in books. Accept a difference, link a bill yourself or mark it to follow up with the vendor. Bills with credit that is not yet in 2B are listed separately and carried forward to the next month. You can export the result to Excel for your CA. See the step-by-step help or GST compliance in EaseDesk.