Topic
GST returns
GSTR-1, GSTR-3B and the monthly and quarterly filing cycle, with due dates and late fees.
Guides
Start with the full guide.
GST & Indirect Tax E-Invoicing in India: The Implementation Playbook A complete operational guide to e-invoicing under GST. Applicability thresholds, IRN generation, e-way bill linkage, IRP integration, error codes, B2C QR codes, and the workflow that makes invoicing seamless across multi-GSTIN, multi-system businesses. OneFinOps Editorial11 min GST & Indirect Tax GSTR-2B Reconciliation Playbook: The Operational Guide for Finance Teams A complete, finance-team-grade playbook for reconciling GSTR-2B against your books. Matching rules, ITC implications, vendor non-filer recovery, and the operational workflow that compresses month-end from days to hours. OneFinOps Editorial11 min GST & Indirect Tax Multi-GSTIN Consolidation: The Operational Guide for Pan-India Businesses A complete operational guide to running a single business across multiple GSTINs. Branch transfers, ISD distribution, cross-charging, consolidated returns, audit trail, and the architecture that keeps a 10-state operation closing on time. OneFinOps Editorial12 min
Articles
GST returns, explained.
GST GSTR-9 and GSTR-9C: Applicability, Due Date and Late Fees GSTR-9 is mandatory above ₹2 crore turnover and GSTR-9C above ₹5 crore. Both are due 31 December 2026 for FY 2025-26. OneFinOps Editorial 3 min 
GST GSTR-2B vs GSTR-3B Reconciliation: How to Match ITC GSTR-2B vs GSTR-3B reconciliation checks that the ITC you claim in Table 4 of GSTR-3B agrees with GSTR-2B, with every difference explained. OneFinOps Editorial 3 min 
GST What is E-Invoicing in GST? IRN, Process and Rules E-invoicing in GST means reporting each B2B invoice to a government Invoice Registration Portal, which validates it and returns an IRN and a signed QR code. OneFinOps Editorial 3 min 
Compliance Compliance Calendar FY 2026-27 for Private Limited Companies The FY 2026-27 compliance calendar lists every GST, TDS, advance tax, PF, ESI, income tax and ROC due date a private limited company must meet, month by month. OneFinOps Editorial 4 min 
GST GST Reconciliation: Meaning, Types, Process and Excel Format GST reconciliation is matching your books with GST returns: sales with GSTR-1, purchases with GSTR-2B, and both with GSTR-3B, before you file. OneFinOps Editorial 3 min 
GST GST Due Dates FY 2026-27: GSTR-1, GSTR-3B and GSTR-9 Calendar GST due dates FY 2026-27: GSTR-1 by the 11th, GSTR-3B by the 20th, QRMP GSTR-3B by the 22nd or 24th, and GSTR-9 for FY 2025-26 by 31 December 2026. OneFinOps Editorial 3 min Glossary
The terms you will meet.
GST basics GST (Goods and Services Tax) India's unified indirect tax that replaced multiple central and state levies, creating a single national market for goods and services. Also called Goods & Services Tax GST returns GSTR-1 A monthly or quarterly GST return filed by registered businesses to report all outward supplies (sales) made during the tax period. Also called Form GSTR-1, outward supplies return, GST sales return GST returns GSTR-3B A monthly self-declared summary return where businesses report their GST liability, claim Input Tax Credit, and pay the net tax due. Also called Form GSTR-3B, GST summary return, monthly summary return
See it in the product
GST returns, in the product.
Tax & ComplianceGST ComplianceGSTR-2B reconciliation nightly. GSTR-1, 3B, 9, 9C drafted from your books. ITC eligibility tracked. Multi-state, multi-GSTIN, multi-country.GST ComplianceGSTR-1 FilingOutward supplies return computed from invoices. Sign off, file via authorised GSP API.GST ComplianceGSTR-3B FilingSummary return drafted from books. ITC + outward + RCM auto-populated.GST ComplianceGSTN Portal IntegrationAuthorised GSP API. No portal switching. Live status.DomainFinancial ManagementAccounting, Accounts Payable, Accounts Receivable, Banking and Cash, Tax and Compliance, Financial Reporting