Upload GSTR-2B JSON + Purchase Register from Tally/Busy. Get exact safe ITC for Table 4 in under 60 seconds. Chase vendors, generate DRC-01C responses, export IMS actions — all in one place.
Simulate how we match supplier JSON against your purchase register to extract safe ITC numbers.
Claim ₹1 more ITC than GSTR-2B allows and your 3B filing is auto-blocked by the portal. Your client panics. You're stuck recalculating manually.
The new Invoice Management System needs individual Accept/Reject for every single invoice. 50 vendors = 50 clicks. Takes hours every single month.
4 invoices missing from supplier's GSTR-1? Manually copy GSTIN, amounts, dates into WhatsApp messages. Repeat for every non-filing vendor. Every month.
4-pass matching engine reconciles GSTR-2B JSON vs your Purchase Register (Excel/CSV) in seconds. Handles invoice format differences, date mismatches, and value tolerances.
Core FeatureGet exact ITC numbers for Table 4(A) and 4(B), split by IGST/CGST/SGST/Cess. Download portal-ready JSON or pre-filled Excel utility for direct upload.
Prevents Hard BlockGot a DRC-01C notice? Generate a formal response with exact calculations, DRC-03 payment amounts, and interest computation in one click.
One-Click ResponseAuto-generate personalized WhatsApp messages for every non-filing vendor with invoice numbers, amounts, and ITC at risk. Just tap and send.
Save 2+ HoursExport bulk Accept/Reject actions as CSV for the Invoice Management System. No more clicking one invoice at a time on the portal.
Bulk ActionManage all your clients with GSTIN, contact info, and reconciliation history. Track who's been reconciled and who's pending.
Multi-ClientDrop your GSTR-2B JSON file from GST portal + Purchase Register from Tally, Busy, or Zoho (Excel/CSV)
Our 4-pass matching engine handles invoice format differences, date mismatches, and value tolerances automatically
Copy safe ITC to 3B. Export IMS Accept/Reject as CSV. Chase vendors on WhatsApp. Download full Excel report.
"Before Firm2B, reconciling 2B vs books was a nightmare of Excel formulas. Now, we just drop the files and get the exact Table 4 numbers in seconds. The WhatsApp vendor follow-up alone saves us days of grunt work."
"The official GSTR-3B Excel utility output is flawless. We just upload the pre-filled sheet and file directly. Preventing portal blocks has saved our clients countless notices and interest penalties."
"IMS compliance was taking up 80% of our article assistants' time. With Firm2B's bulk CSV export, we manage accept/reject actions in one go. Highly recommend this for any practice managing 50+ clients."
Yes, absolutely. Firm2B is built on a local-first architecture. When you upload GSTR-2B JSON or Purchase Registers, all calculations and matching are done directly inside your web browser. Your client data never leaves your computer or gets sold to third parties.
Yes. You can upload any Excel or CSV format exported from Tally Prime, Busy ERP, Marg, Zoho Books, or custom templates. Our smart matching engine automatically maps columns for tax values, invoice numbers, GSTINs, and dates.
Our matching engine runs four sequential scans: Pass 1 matches exact invoice number + value; Pass 2 handles date & number normalization (e.g. ignoring leading zeros or slashes); Pass 3 uses fuzzy string logic to match modified numbers; Pass 4 handles multiple smaller invoices grouped under a single vendor bill.
The GST portal now enforces hard blocks if you claim more ITC than is available in GSTR-2B. Firm2B categorizes all matches and generates a GSTR-3B Table 4 breakdown that isolates blocked credits, RCM, and reversals. The resulting portal-ready JSON and pre-filled Excel ensure your claim matches GSTR-2B perfectly, preventing hard blocks.
Yes! During our beta test period, all core features—including reconciliations, calendar tracking, notice tracker, GSTR-3B computations, and exports—are 100% free with no limits on clients or invoices. No credit card is required.
Free during beta. All features included. No signup required. Your data stays in your browser.
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