What is input tax credit reconciliation?

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Input tax credit (ITC) reconciliation is the process of verifying that the input tax credits a business claims — the GST or VAT paid on purchases, which can be offset against the tax collected on sales — are valid and consistent with the records filed by the suppliers from whom those purchases were made.

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In India's GST framework, this means matching the ITC a company wants to claim in its GSTR-3B with the data appearing in its GSTR-2B — the auto-populated statement drawn from what suppliers have filed in their GSTR-1 returns.

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Why it matters

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An ITC claim is only valid if the supplier has actually filed and paid the corresponding tax. If a supplier files late, files incorrectly, or doesn't file at all, the buyer's ITC claim is at risk — even if the underlying purchase transaction was genuine and correctly recorded internally.

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This creates a dependency between a company's tax position and the filing behaviour of every supplier it buys from. For a large enterprise with thousands of suppliers, monitoring ITC eligibility across all of them is a significant compliance challenge.

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The reconciliation challenge

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ITC reconciliation requires matching internal purchase records (from the ERP) with GSTR-2B data from the GSTN portal, identifying mismatches — invoices present internally but missing from 2B, or amounts that don't agree — and deciding whether to pursue the supplier, hold the claim, or reverse the credit.

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Automating this process allows finance teams to monitor ITC eligibility in real time rather than discovering exposure at the time of filing.

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Related: GST Reconciliation · Vendor Reconciliation · Recon Automation · Accounts Payable (AP)