Free GSTR-3B calculator for proportionate ITC reversal and tax liability working.
Import GSTR-2B JSON, classify ITC rows, add manual or RCM entries, enter taxable and exempt sales, and prepare a GSTR-3B working sheet. This utility is for calculation support only. It does not perform books-vs-portal reconciliation.
This is not a reconciliation module.
The calculator helps with GSTR-3B computation, especially proportional ITC reversal and tax liability working. It does not compare your books with portal data, does not post vouchers, and does not replace the full Lejur Books GSTR-2B reconciliation workflow.
Open the GSTR-3B working calculator below.
Your uploaded file and draft stay inside the browser utility unless you choose to export the working file.
When to use it
Use it while preparing GSTR-3B monthly working papers where ITC must be classified, proportionate reversal needs a sales ratio, or RCM/manual entries must be included in the calculation.
When not to use it
Do not use this as proof that books and portal data match. For matching, missing invoice review, and voucher-level drilldown, use the reconciliation workflow inside Lejur Books.
Common questions about this free calculator.
Does this GSTR-3B tool do reconciliation?
No. This free tool does not reconcile books with the GST portal. It is a calculator for GSTR-3B working figures such as proportionate ITC reversal, manual/RCM adjustments, sales ratio, and tax liability.
What data does the calculator use?
It can import GSTR-2B JSON, classify purchase rows, accept manual or RCM entries, and use taxable or exempt sales inputs to compute ratio-based ITC working.
Is this a replacement for filing review?
No. Treat the output as a working paper. Final GSTR-3B values should be reviewed with books, GST portal data, applicable law, and professional judgement before filing.
Is my data uploaded to Lejur One?
The calculator runs in your browser as a free utility. It is designed for local working and export, not for storing your financial data in Lejur One.
Move from working papers to controlled GST accounting.
Lejur Books connects GST vouchers, ledgers, reports, approvals, inventory, attachments, and audit trails in the live app.