GST Returns
Filing Guide

GST RETURNS FREQUENCY varies by entity type + turnover: REGULAR TAXPAYERS: (1) GSTR-1: MONTHLY (if turnover > ₹5 crore) or QUARTERLY (if turnover ≤ ₹5 crore under QRMP scheme). (2) GSTR-3B: MONTHLY mandatory for all regular taxpayers. PaiBN: Monthly tax payment regardless of GSTR-1 frequency. COMPOSITION SCHEME: (1) GSTR-4: ANNUAL only. Due 30 April of next FY. Much simpler — only 1 annual return + quarterly tax payment via CMP-08. (2) CMP-08: QUARTERLY tax payment (April 18, July 18, October 18, January 18). NON-RESIDENT: (1) GSTR-5: MONTHLY. Due 20th of next month or 7 days after registration expires. ANNUAL RETURNS: (1) GSTR-9: ALL REGULAR TAXPAYERS with turnover > ₹2 crore. Due December 31 of next FY. (2) GSTR-9C: MANDATORY if turnover > ₹5 crore. CA-certified reconciliation statement. SPECIAL ENTITIES: (1) GSTR-7 (TDS deductors): monthly, 10th. (2) GSTR-8 (e-commerce operators): monthly, 10th. (3) GSTR-10 (cancellation): one-time, within 3 months of cancellation. (4) GSTR-11 (UIN holders): monthly, 28th. PRACTICAL: most small businesses under QRMP file GSTR-1 quarterly + GSTR-3B monthly + GSTR-9 annually. Total 1 quarterly + 12 monthly + 1 annual = 14 returns per FY. Software automates much of this.

QRMP (Quarterly Return Monthly Payment) Scheme — designed for SMALL BUSINESSES to reduce compliance burden. KEY POINTS: (1) ELIGIBILITY: Aggregate turnover ≤ ₹5 CRORE in previous FY. (2) GSTR-1 FREQUENCY: QUARTERLY (instead of monthly) — major saving in compliance time. (3) TAX PAYMENT: MONTHLY still required via PMT-06 challan + IFF (Invoice Furnishing Facility) for business-to-business (B2B) sales. (4) GSTR-3B: QUARTERLY (instead of monthly). PROCESS: (1) Opt in via GST portal: Services → Returns → Opt in for QRMP. (2) Cannot opt mid-quarter — applies from start of next quarter. (3) Pay tax monthly using: (a) Fixed sum method: 35% of preceding quarter's tax. (b) Self-assessment: actual tax due. (4) File quarterly GSTR-1 + GSTR-3B at end of quarter. ADVANTAGES: (1) Quarterly filing instead of 12 monthly returns = MORE TIME + reduced cost. (2) Late filing fees per return is reduced. (3) IFF allows uploading B2B invoices monthly (1st-15th) so buyers can claim input credit timely. DISADVANTAGES: (1) Slightly more complex tax payment mechanism. (2) Cannot switch back to monthly without delay. (3) IFF must be used carefully for B2B credits. WHO SHOULD: small businesses ₹1.5cr - ₹5cr turnover. Below ₹1.5cr: might prefer Composition Scheme instead. Above ₹5cr: monthly mandatory. RECOMMENDATION: QRMP saves ~50% compliance time for eligible businesses.

LATE GST FILING PENALTIES (FY 2026-27): (1) GSTR-3B late filing: ₹50 per day per return UP TO MAXIMUM ₹5,000 per return. (2) GSTR-1 late filing: ₹50 per day per return UP TO MAXIMUM ₹5,000 per return. (3) GSTR-4 (composition annual): ₹200 per day UP TO ₹5,000 maximum. (4) GSTR-5 (non-resident): ₹50 per day per return. (5) GSTR-9 (annual): ₹200 per day UP TO ₹5,000 per FY. INTEREST ON UNPAID TAX: 18% per annum from due date until payment. CUMULATIVE EXAMPLE: 90 days late filing of monthly GSTR-1 + GSTR-3B for a month: (a) ₹50 × 90 = ₹4,500 (GSTR-1, capped at ₹5,000). (b) ₹50 × 90 = ₹4,500 (GSTR-3B). (c) Total ₹9,000 for delayed month. Plus 18% interest on unpaid tax. 1-YEAR DELAY: Multiple months × ₹5,000 cap each = ₹60,000+ for full year. SERIOUS RISK: GST cancellation possible if 6+ consecutive months filing missed. WAIVER: AO may waive in 'reasonable cause' situations (death, force majeure) — formal application required. SUSPENSIONS: Excessive non-compliance may trigger GSTIN suspension followed by cancellation. MITIGATION: (1) Set up calendar reminders 5-7 days before due dates. (2) Use accounting software with auto-reminders. (3) Engage CA/accountant for monthly compliance. (4) Pay tax even if return delayed — interest accrues only on unpaid tax. (5) Don't ignore — file ASAP after due date.

GST INPUT TAX CREDIT (ITC) — claim GST paid on PURCHASES (inputs) against GST collected on SALES (outputs). PROCESS: (1) SUPPLIER FILES GSTR-1: your supplier files their sales to you in GSTR-1. (2) AUTO-FLOWS to your GSTR-2B: GSTR-2B is read-only consolidated view of all your eligible ITC. Generated monthly automatically. (3) CLAIM IN GSTR-3B: declare eligible ITC in GSTR-3B. ELIGIBILITY CRITERIA: (1) GST INVOICE from supplier with GST number. (2) Supplier has filed GSTR-1 reflecting your purchase. (3) Goods/services received. (4) Tax paid by supplier to government. (5) Used for business purposes (not personal). NOT ELIGIBLE FOR ITC: (1) Personal use items. (2) Specific blocked credits: motor vehicles, food, beauty, health services, club memberships, employee compensation. (3) Composition Scheme purchases. (4) Late filing scenarios. (5) Goods/services for exempt supplies. ITC CALCULATION: ITC = GST paid on purchases × business use % - blocked credits. PROVISIONAL ITC: 100% of GSTR-2B as starting point. Adjustments + reversals as needed. REVERSAL: If supplier later cancels invoice OR you don't pay supplier within 180 days, ITC must be reversed. TIMING: ITC claim must be made within: (a) Due date of GSTR-3B for September of next FY. (b) Or annual return GSTR-9 due date. Earlier of two. KEEP RECORDS: maintain all purchase invoices + supplier details for 6 years. SOFTWARE: Tally, Zoho Books, ClearTax automate ITC reconciliation.

Two MOST FREQUENT GST returns. KEY DIFFERENCES: GSTR-1 (OUTWARD SUPPLIES): (1) PURPOSE: Detailed declaration of EVERY SALE invoice. (2) WHAT IT CONTAINS: Each invoice with: buyer's GST number, HSN/SAC code, amount, tax rate, CGST/SGST/IGST split, place of supply. (3) BUYER-LEVEL DETAIL: every B2B + B2C transaction listed. (4) FORM SECTIONS: B2B (buyer with GST), B2C (large), B2C (small), exports, credit/debit notes, advance receipts. (5) DUE DATE: 11th of next month (or end of quarter for QRMP). (6) NO TAX PAYMENT here — just declaration of sales. (7) BUYER IMPACT: affects buyer's GSTR-2B (their ITC entitlement). GSTR-3B (SUMMARY + TAX PAYMENT): (1) PURPOSE: Aggregated summary + TAX PAYMENT. (2) WHAT IT CONTAINS: Aggregated outward + inward supplies, taxable value, tax payable. (3) NO BUYER-LEVEL DETAIL. Just total. (4) FORM SECTIONS: Outward supplies, inward supplies (RCM), ITC details, payment of tax. (5) DUE DATE: 20th of next month. (6) TAX PAYMENT here — pay GST liability after ITC adjustment. (7) MUST MATCH GSTR-1 + GSTR-2B values. RECONCILIATION: GSTR-3B summary should reconcile with GSTR-1 detail. Differences trigger queries. AUDIT TRAIL: GSTR-9 annual return reconciles all monthly GSTR-3B + GSTR-1 + GSTR-2B for full FY. STRATEGY: (1) FILE GSTR-1 BEFORE GSTR-3B each month (allows checking). (2) USE accounting software for auto-population. (3) RECONCILE monthly to avoid year-end shocks.

GST NIL RETURN — when there are NO TRANSACTIONS during the return period. STILL MANDATORY to file! (1) GSTR-1 NIL: no outward supplies in the month/quarter. File with all zeros in relevant sections. Status: 'NIL' return. (2) GSTR-3B NIL: no inward + outward + tax liability. File with zeros throughout. (3) GSTR-4 NIL (composition): no transactions during quarter. File with zeros. WHY MANDATORY: (1) ABSENCE of return = treated as non-filing. (2) Triggers late filing fees per day. (3) After 6 months: GSTIN cancellation possibility. (4) BUYERS depend on your filings for ITC validation. PROCESS: (1) Login to GST portal. (2) Returns dashboard. (3) Select relevant period. (4) Choose form (GSTR-1, GSTR-3B). (5) System auto-validates zero-entry sections. (6) Submit + sign with DSC/EVC. (7) Submit nil return takes 2-5 minutes vs full filing. SHORTCUT: Most accounting software (Tally, Zoho, ClearTax) have 'Nil Return' option that auto-files in 30 seconds. CRITICAL: Don't skip nil returns thinking 'no transactions = no filing'. Late filing penalty applies even for nil returns. EXAMPLE: 6 months of nil GSTR-3B not filed = ₹50 × 180 days × 6 returns = ₹54,000 penalty. Significant for negligence. STRATEGIC: Set up monthly calendar reminder. Even for inactive businesses, mark + file nil returns regularly. Eventually CANCEL GSTIN if business truly closed (avoiding ongoing compliance burden).

GST RETURNS COMPLIANCE COST + SOFTWARE: SMALL BUSINESS (< ₹1 crore turnover, few transactions): (1) FREE SOFTWARE: Tally Free Edition, Vyapar Free, Marg Free Trial. (2) GST PORTAL: directly via gst.gov.in (no software needed for basic returns). (3) SELF-FILING: feasible for proprietorship + small business. (4) COST: minimal. MEDIUM BUSINESS (₹1-5 crore turnover): (1) PAID SOFTWARE: Tally (₹500-1500/month), Zoho Books (₹399-2K/month), ClearTax GST (₹300-2K/month), Marg, Vyapar Premium. (2) ACCOUNTANT (in-house or freelance): ₹15K-50K monthly depending on transactions. (3) CA QUARTERLY REVIEW: ₹15K-30K per quarter. (4) TOTAL COST: ₹2-5 lakh annually for compliance. LARGER BUSINESS (> ₹5 crore turnover): (1) ENTERPRISE SOFTWARE: SAP, Oracle, BUSY, Tally Prime, premium options. (2) FULL-TIME ACCOUNTING TEAM: in-house ₹3-10 lakh annually. (3) CA FOR ADVISORY: ₹50K-1 lakh quarterly. (4) MANDATORY AUDIT: ₹50K-2 lakh annually. (5) TOTAL: ₹10-30 lakh annually. WHEN TO HIRE PROFESSIONAL CA: (1) Audit threshold approached (> ₹5 cr). (2) Multi-state operations. (3) Complex business (manufacturing, exports, services + goods). (4) Past compliance issues. (5) GST scrutiny notice received. SOFTWARE FEATURES: Auto-reconciliation (GSTR-1 vs GSTR-3B vs GSTR-2B), invoice management, e-invoice integration, return preparation, due date reminders, integrated payment. Most modern software cuts compliance time by 70-80%.