How GSTR-2B Is Generated
GSTR-2B is system-generated by the GST portal on the 14th of every month. It consolidates all invoices, credit notes, and debit notes uploaded by your suppliers in their GSTR-1 (monthly filers) or IFF (QRMP filers) between the 14th of the previous month and the 13th of the current month. The statement is static — once generated, it does not update even if suppliers amend their GSTR-1 later. Amendments by suppliers appear in the following month's GSTR-2B.
What GSTR-2B Contains
GSTR-2B is divided into sections: Part A shows ITC available (B2B invoices, import of goods via ICEGATE, import of services, ISD credits, and reverse charge inward supplies). Part B shows ITC not available — invoices where ITC is blocked under Section 17(5), supplies from composition dealers, and nil-rated or exempt supplies. Each entry shows the supplier's GSTIN, invoice number, date, taxable value, and IGST/CGST/SGST amounts. The document reference number (IRN) is also shown for e-invoices.
Rule 36(4) and the ITC Restriction
Under Rule 36(4) of the CGST Rules (effective January 1, 2022), a taxpayer can claim ITC in GSTR-3B only to the extent the credit appears in GSTR-2B. There is no provisional ITC allowance. Previously (October 2019 to December 2021), taxpayers could claim up to 105% of GSTR-2B ITC provisionally. That provision has been removed. If you claim ITC beyond GSTR-2B, the excess is treated as wrongly availed ITC and is recoverable with interest at 24% per annum under Section 50(3).
GSTR-2B vs GSTR-2A: Practical Difference
GSTR-2A updates in real time as suppliers file — it is useful for monitoring whether your suppliers have filed their returns. GSTR-2B is the locked snapshot used for actual ITC claims. Best practice is to reconcile your purchase register against GSTR-2B before filing GSTR-3B each month. Invoices in your purchase register but absent from GSTR-2B indicate a supplier filing gap — follow up before the 13th of the month to ensure the invoice makes it into the current GSTR-2B.