What is Rule 37A in GST compliance?

Rule 37A states that if you claim Input Tax Credit (ITC) based on GSTR-2B, but the supplier fails to file their corresponding GSTR-3B by September 30th of the following financial year, you must reverse the claimed credit. You can re-claim the credit once the supplier completes their GSTR-3B filing.

Can I claim provisional ITC above the GSTR-2B limit?

No. Under current GST laws, the provisional credit allowance (which was previously 20%, then 10%, then 5%) has been completely phased out. Taxpayers can only claim Input Tax Credit that is visible in their static GSTR-2B statement.

Does GSTR-2A change after the month ends?

Yes. GSTR-2A is a dynamic statement that changes in real-time. If a supplier files their GSTR-1 late for a previous month, that transaction will pop up in your GSTR-2A statement for that historic month retroactively.

How does TrulyInvoice help with GSTR-2B reconciliation?

TrulyInvoice checks vendor GSTIN filing histories and validates tax rates during the invoice upload process, helping prevent data mismatches and ensuring clean purchase records prior to portal matching.

GSTR-2A vs GSTR-2B: Which Controls ITC in 2026? (Tally Reconciliation)

For companies registered under the Goods and Services Tax (GST) system in India, input tax credit (ITC) reconciliation is one of the most critical monthly compliance tasks. The GST portal generates two statements: GSTR-2A and GSTR-2B. Claiming credit based on the wrong statement can lead to tax notices, audits, and interest liabilities.

Understanding the statutory and legal differences between GSTR-2A and GSTR-2B is essential for maintaining compliance. Knowing how these forms interact with your Tally Purchase Register ensures you claim eligible credits accurately.

What is GSTR-2A? (The Dynamic View)

GSTR-2A is a **dynamic, auto-populated, read-only** statement. It updates in real-time as your suppliers upload invoice details in their GSTR-1, GSTR-5, or GSTR-6 returns.

Key Characteristic: If a supplier delays filing and uploads a January invoice on 25th February, that transaction will pop up in your January GSTR-2A statement retroactively. Because GSTR-2A recalculates historic periods continually, it does not serve as a reliable reference for static monthly return filing.

What is GSTR-2B? (The Static Cut-off)

GSTR-2B is a **static, auto-drafted, read-only** statement. It acts as a frozen monthly snapshot generated on the 12th or 14th of the following month.

Key Characteristic: Once GSTR-2B is generated for a specific month, it never changes. Any invoice uploaded by your supplier *after* the monthly cut-off date will not show up in this month's GSTR-2B; it will instead appear in the subsequent month's statement when it is drafted. This static nature provides a consistent basis for monthly tax filings.

GSTR-2A vs GSTR-2B Comparison

The table below highlights the differences between GSTR-2A and GSTR-2B:

Feature	GSTR-2A	GSTR-2B
Nature of Statement	Dynamic (changes in real-time)	Static (remains frozen once generated)
Source of Data	Auto-drafted from supplier GSTR-1 returns	Auto-drafted from supplier GSTR-1 returns
Controls Monthly ITC Claims?	No	Yes (Strictly under Section 16(2)(aa))
Generation Frequency	Continuous	Monthly (12th/14th of following month)

Why GSTR-2B Controls Your ITC Claim

Effective from January 1, 2022, the Central Board of Indirect Taxes and Customs (CBIC) amended the GST laws via Section 16(2)(aa) and Rule 36(4).

The Legal Mandate: A taxpayer can claim input tax credit only if the corresponding invoice details have been uploaded by the supplier in GSTR-1, and such details are communicated to the recipient in GSTR-2B. Claiming credits that are not visible in GSTR-2B is a compliance violation.

⚠️ Penalty for Wrong Claim:

If you claim ITC that does not appear in your GSTR-2B, it is considered an invalid claim. You will be required to reverse the credit along with an interest liability of 18% per annum (or 24% under specific circumstances depending on tax provisions), and face potential penalty audit notices under Section 74.

How to Reconcile GSTR-2B with Tally Purchase Register

Reconciling your purchase book with GSTR-2B ensures no eligible credit is left unclaimed:

Export Tally Purchase Register: Go to Gateway of Tally > Display More Reports > Account Books > Purchase Register. Choose the month and click Export (Alt+E) to Excel.
Download GSTR-2B: Log in to the GST portal, select the return period, go to GSTR-2B, and download the Excel file.
Perform Key-Based Matching: Match entries using the supplier GSTIN as the unique identifier. Compare the Invoice Number, Invoice Date, Taxable Value, and tax splits (CGST/SGST/IGST).
Resolve Discrepancies:
- In Tally but not in 2B: The supplier has not filed their GSTR-1. Do not claim this credit in your GSTR-3B. Follow up with the supplier to ensure they file their return.
- In 2B but not in Tally: A purchase invoice is missing from your records. Locate the bill from your purchasing department and record the voucher in Tally.

Summary

Maintaining compliance under Section 16(2)(aa) requires aligning monthly ITC claims with GSTR-2B rather than GSTR-2A. Implementing routine reconciliations ensures accurate claims and reduces tax compliance risks.

2A vs 2B GST: Which One Controls Your ITC Each Month