What is GST reconciliation?
GST reconciliation is the document-level comparison of accounting records with GST data. For purchase-side ITC review, the Purchase Register is commonly compared with GSTR-2B for the relevant tax period. The purpose is to identify matched invoices and exceptions requiring accounting correction, supplier follow-up, period review or further investigation.
What should be compared?
A useful invoice-level reconciliation normally considers supplier GSTIN, invoice or document number, document type, document date, taxable value and applicable tax components such as IGST, CGST, SGST/UTGST and cess where relevant. Credit notes, debit notes, amendments, reverse-charge transactions and imports should be reviewed separately where appropriate.
Main reconciliation outcomes
Matched means the relevant records correspond under the selected matching rules. Partial Matching means a likely corresponding record exists but one or more fields differ. Not in 2B means a Purchase Register record has no corresponding record in the selected GSTR-2B. Not in PR means a GSTR-2B record was not found in the selected Purchase Register.
Practical monthly workflow
- Confirm GSTIN and tax period.
- Extract the Purchase Register.
- Download the relevant GSTR-2B.
- Check GSTIN, document type and source-file integrity.
- Normalize invoice numbers and dates where appropriate.
- Match supplier GSTIN and document number.
- Compare taxable value and tax amounts.
- Review exceptions.
- Follow up with suppliers where required.
- Retain the final reconciliation working.
Why use a GST reconciliation tool?
Large Purchase Registers are difficult to review manually using repeated Excel formulas. A reconciliation tool can standardize matching, prevent duplicate allocation, classify exceptions and create an exportable working report. GSTN's own Matching Offline Tool also distinguishes exact, partial, probable and mismatch results.
Important limitation
Reconciliation is a working control, not by itself a legal conclusion that ITC is eligible. Review the applicable GST law, source invoice, blocked-credit provisions, reversals and other conditions before filing decisions.
Use the Free GST Reconciliation Tool
Reconcile Purchase Register vs GSTR-2B, review matched and unmatched invoices and download an Excel reconciliation report.
Open GST Reconciliation Tool →Frequently Asked Questions
What is GST reconciliation?
It is the comparison of accounting records with GST data to identify matched and exception transactions.
Why reconcile Purchase Register with GSTR-2B?
It helps identify missing invoices, mismatches, duplicate records and other differences before final ITC review.
Can GSTR-2B reconciliation be done in Excel?
Yes. Excel is commonly used, although large datasets and non-identical invoice numbers can make manual matching difficult.
Does a matched invoice automatically mean ITC is eligible?
No. Matching is a data-review result. Applicable GST law and transaction-specific eligibility conditions still need to be considered.