How to use this calculator
- Enter the rows from GSTR-2B and from your purchase register.
- Choose the matching basis to match your situation.
- Read the matched invoices, the mismatches and the input tax credit at risk in the result.
The check runs on what you paste in; confirm each mismatch with the supplier.
The result is an estimate for the figures you enter. It is not a filed return, a certificate or professional advice. Rates, thresholds and section numbers change with each Finance Act, and the Income-tax Act, 2025 applies from 1 April 2026 with new section and form numbers.
For the related work, see GST return filing.
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