Adjustment of Input Tax Credit under GST


    Regardless of their turnover, all registered taxpayers under GST must file an annual return in GSTR-9. Before filing the yearly return, you must first file GSTR-1 and GSTR-3B. The annual return comprises information from the GSTR-1 and GSTR-3B forms.

    If a taxpayer finds that certain information in the form GSTR-1 or GSTR-3B is incorrect, they won’t be able to rectify it GSTR-9. GSTR-9’s sole purpose is data aggregation. Nevertheless, data in a taxpayer’s books of accounts must match with data in the returns filed. This process of matching the data is known as reconciliation.

    Why is it necessary to reconcile the returns with the book of accounts?

    Prevent missing out on claiming ITC

    Sometimes, businesses forget to document the invoices they receive. Reconciliation helps in ensuring that the available ITC is claimed correctly and on time. 

    Maintaining Internal Control

    Strong control is maintained within the organisation when the book of accounts matches the filed returns. Reconciliation guarantees that discrepancies in the taxpayer’s books of accounts are fixed timely. 

    As a Part of the Audit Process

    The book of accounts and GSTR-2B or GSTR-2A make it easier for the auditor to compare the inward supplies and ask the taxpayer to correct any discrepancies. Therefore, taxpayers should reconcile the two regularly and have the data on hand for audit.

    Avoid Notices From Tax Authorities

    Avoiding mismatches will help you avoid receiving notices from the tax department, which could result in having to pay penalties which could have been avoided. Doing monthly reconciliation and taking appropriate action when there is a mismatch in data are essential activities that will help prevent these notices and penalties.

    Reconciliation can be a tedious task if accounting records haven’t been maintained properly. Consider using a powerful GST Accounting Software like BUSY to help you take care of GST compliance requirements.

    Reconciling Credit Mismatch Between GSTR-2B/2A and GSTR-3B

    Reconciling the returns GSTR-2B or GSTR-2A and GSTR-3B has become crucial under the GST Law since the taxpayer can only claim ITC on a specific invoice if that invoice is present in the returns GSTR-2B or GSTR-2A.

    The Department can use this idea of matching to check that all transactions that took place within a specific time period are accurately recorded and submitted in the summary return GSTR-3B. The following table outlines what to do if there are discrepancies:

    Excess credit is declaredGSTR-2AITC is not claimed by the recipient in GSTR-3B.He should claim the missing ITC in the month in which the discrepancy is identified.
    The supplier has shown excess outward supplies in GSTR-1.He should rectify the same in GSTR-1 of the month in which the discrepancy is identified.
    Less credit is declaredGSTR-2AThe supplier failed to upload the invoice.The supplier is asked to rectify the same in the return of the month in which the discrepancy is identified. If the supplier fails to do so, the ITC claimed by the recipient gets added to the output tax liability in the next month.
    Duplicate credit claimed by the recipient in GSTR-3B.No further action is required if the recipient has already corrected the same. If not, the excess ITC claimed is added to the output tax liability of next month.

    In both of the above situations, the GSTR-9 must include an explanation of the differences between the ITC information from GSTR-2A and GSTR-3B under the following two headings:

    Credit Mismatch Between GSTR-2B/3B and Books of Accounts

    In this situation, a taxpayer must carry out the next two reconciliations:

    Reconcile Data Between GSTR-2A/2B and Books of Accounts

    Since the data included in GSTR-2A/2B is provided by the vendors, the reconciliation will require dynamic information.  The data changes each time a vendor submits a GSTR-1 or modifies it, requiring a new reconciliation.

    Step 1: Determine which invoices were only entered into the books of accounts and not on the GST portal and which invoices were only accessible through the portal (GSTR-2A) and were not recorded in the books.

    Step 2: This invoice discrepancy may occur for any of the reasons listed below:

    Step 3: Take action against such mismatches, as mentioned in the above table.

    Reconciliation Amongst GSTR-3B and Accounts Book

    A reconciliation between GSTR-3B and the accounts book needs static data, which must be prepared and recorded by the entity itself. 

    Step 1: Verify that each Payables ledger for each GST challan the organisation has paid is accurately documented.

    Step 2: Compare the ITC reported in GSTR-3B to what is listed in the books of accounts. Pass a corrected entry if there is a mismatch.

    Step 3: Check the output of the GST reported in GSTR-3B to the output reported in the books of accounts. Pass a corrected entry if there is a mismatch.

    Step 4: Verify the Trial Balance with the Electronic Credit Ledger.

    Step 5: Correct any mistakes in GSTR-3B in subsequent months’ returns.


    It is crucial for organisations to reconcile their GST Returns with their books of accounts regularly. Failing to do so can result in missing out on claiming input tax credit (ITC) and paying excess tax. Reconciliation also helps to ensure strong internal control and timely correction of mismatches which may otherwise lead to receiving notices from the Tax Department and paying penalties. To make the process of reconciliation easier, we recommend using BUSY GST Accounting Software.

    • Home
    • /
    • GST
    • /
    • adjustment of input tax credit under GST

    BUSY is a simple, yet powerful GST / VAT compliant Business Accounting Software that has everything you need to grow your business.

    phone Sales & Support:

    +91 82 82 82 82 82
    +91 11 - 4096 4096