Guide to Reconciling GSTR 2A and GSTR 3B in Excel Reconciling GSTR 2A with GSTR 3B is essential for ensuring that the Input Tax Credit (ITC) claimed in your monthly summary return (GSTR 3B) matches the data auto-populated from your suppliers' filings (GSTR 2A). This process helps identify missing invoices and avoid legal notices from tax authorities. Step-by-Step Reconciliation Process GSTR2A & GSTR2B Automatic Reconciliation Excel Tool

Use COUNTIF to flag invoices where supplier GSTIN exists in GSTR-2A but invoice number does not.

=IF(Total_ITC_Claimed > (Total_ITC_in_2A * 1.05), "Excess Claim - Disallowed", "Within Limit")

Reconciling GSTR 2A and 3B is vital for several reasons: