GST Return Filing explained: this guide covers what GST Return Filing means, who it applies to, the step-by-step process, documents required, fees, due dates and penalties in India — so you can stay compliant with confidence and avoid costly mistakes.
What is GST Return Filing?
A GST return is a document containing details of all income (sales/outward supplies), purchases (inward supplies), tax collected, and input tax credit (ITC) claimed by a registered taxpayer. Filing GST returns is a mandatory compliance requirement under the Goods and Services Tax Act.
Every registered taxpayer must file GST returns — even if there are nil transactions in a period (nil return). Failure to file attracts late fees, and continued non-compliance can result in cancellation of GSTIN.
Key GST Return Facts (FY 2025-26):
- GSTR-1 due date: 11th of next month (monthly) or last day of quarter (QRMP)
- GSTR-3B due date: 20th of next month (monthly) or 22nd/24th (quarterly)
- Late fee: ₹50/day (₹25 CGST + ₹25 SGST); ₹20/day for nil returns
- QRMP scheme: For taxpayers with turnover up to ₹5 crore
- GSTR-9 (annual): Due by 31 December of the subsequent FY
Types of GST Returns and Who Files Them
| Return | Who Files | What It Contains | Frequency |
|---|---|---|---|
| GSTR-1 | All regular taxpayers (outward supplies) | Details of all outward supplies (sales), invoices issued | Monthly or Quarterly |
| GSTR-1A | Regular taxpayers (amendment) | Amendments to GSTR-1 before GSTR-3B filing | As needed |
| GSTR-2B | Auto-generated for buyers | Auto-populated ITC statement from suppliers' GSTR-1 | Monthly (auto) |
| GSTR-3B | All regular taxpayers | Summary return — outward supplies, ITC claimed, tax paid | Monthly or Quarterly |
| GSTR-4 | Composition scheme dealers | Quarterly summary of supplies and tax paid | Annual (one return) |
| GSTR-5 | Non-resident taxable persons | Outward/inward supplies during the period of registration | Monthly |
| GSTR-6 | Input Service Distributors (ISD) | ITC received and distributed to branches | Monthly |
| GSTR-7 | TDS deductors under GST | TDS deducted from payments made to suppliers | Monthly |
| GSTR-8 | E-commerce operators | TCS collected from sellers on the platform | Monthly |
| GSTR-9 | Regular taxpayers (annual) | Annual reconciliation of all supplies and ITC | Annual |
| GSTR-9C | Taxpayers with turnover > ₹5 crore | Audited reconciliation statement (self-certified) | Annual |
| GSTR-10 | Cancelled GSTIN holders | Final return after cancellation | One-time |
| GSTR-11 | UIN holders (embassies, etc.) | Inward supplies for refund claims | Monthly |
GST Return Due Dates for FY 2025-26
Monthly Filers (Turnover > ₹5 crore)
| Return | Due Date | Period |
|---|---|---|
| GSTR-1 | 11th of next month | Each month |
| GSTR-3B | 20th of next month | Each month |
Quarterly Filers — QRMP Scheme (Turnover Ôëñ ₹5 crore)
| Return / Payment | Due Date | Quarter |
|---|---|---|
| GSTR-1 (quarterly) | 13th of month after quarter end | Q1: 13 Jul | Q2: 13 Oct | Q3: 13 Jan | Q4: 13 Apr |
| IFF (Invoice Furnishing Facility) | 13th of next month (optional) | Months 1 and 2 of each quarter |
| GSTR-3B (quarterly) | 22nd (cat. 1 states) / 24th (cat. 2 states) | Q1: 22/24 Jul | Q2: 22/24 Oct | Q3: 22/24 Jan | Q4: 22/24 Apr |
| PMT-06 (monthly tax payment) | 25th of next month | Months 1 and 2 of each quarter |
Other Returns
| Return | Due Date |
|---|---|
| GSTR-4 (Composition) | 30th April of the next FY |
| GSTR-7 (TDS) | 10th of next month |
| GSTR-8 (E-commerce TCS) | 10th of next month |
| GSTR-9 (Annual — FY 2024-25) | 31 December 2025 |
| GSTR-9C (Reconciliation) | 31 December 2025 (same as GSTR-9) |
QRMP Scheme Explained
The Quarterly Return Monthly Payment (QRMP) scheme is available for taxpayers with aggregate annual turnover up to ₹5 crore. Under QRMP:
- File GSTR-1 and GSTR-3B quarterly (not monthly)
- Pay tax monthly via PMT-06 challan (for months 1 and 2 of quarter) — either 35% of previous quarter's tax or actual liability
- Use IFF (Invoice Furnishing Facility) to upload select invoices in months 1 and 2 of a quarter — so buyers can avail ITC without waiting for quarterly GSTR-1
- Reduces compliance burden from 24 returns to 8 returns per year (for GSTR-1 and GSTR-3B)
Step-by-Step: How to File GSTR-1
GSTR-1 is the statement of outward supplies — it covers all sales invoices issued during the period.
- Login to gst.gov.in with your GSTIN and password
- Go to Returns  Returns Dashboard  Select FY and return period  Prepare Online (GSTR-1)
- Add invoices:
- B2B invoices (sales to other registered businesses)
- B2C Large invoices (sales to consumers above ₹2.5 lakh)
- B2C Small invoices (summary of all B2C sales Ôëñ ₹2.5 lakh, by state)
- Export invoices (IGST paid or under LUT/Bond)
- Credit/Debit notes
- HSN/SAC-wise summary of supplies
- Verify all entries  Submit GSTR-1
- File using EVC (OTP) or DSC
Step-by-Step: How to File GSTR-3B
GSTR-3B is the summary return for tax payment.
- Go to Returns Dashboard  GSTR-3B  Prepare Online
- Table 3.1: Outward supplies — auto-populated from GSTR-1. Enter details of nil-rated / exempt supplies
- Table 3.2: Inter-state supplies to unregistered persons, composition dealers, UIN holders
- Table 4: Eligible ITC — auto-populated from GSTR-2B. Verify and confirm
- Check net tax liability (Output tax - ITC). If cash payment required, pay via electronic cash ledger
- Submit  File with EVC/DSC
GST Late Fee for Not Filing Returns
| Return Type | Late Fee per Day | Maximum Late Fee |
|---|---|---|
| GSTR-1 (nil return) | ₹20/day (₹10 CGST + ₹10 SGST) | ₹500 per return |
| GSTR-1 (non-nil) | ₹50/day (₹25 CGST + ₹25 SGST) | ₹10,000 per return |
| GSTR-3B (nil) | ₹20/day | ₹500 per return |
| GSTR-3B (non-nil) | ₹50/day | ₹10,000 per return |
| GSTR-9 (annual) | ₹200/day (₹100 CGST + ₹100 SGST) | 0.25% of turnover in the state |
Note: GST Council has periodically waived or reduced late fees through amnesty schemes. Check for any current amnesty before paying accumulated late fees.
Input Tax Credit (ITC) in GST Returns
ITC allows businesses to set off tax paid on purchases (inputs) against tax payable on sales (output). Key ITC rules:
- ITC is auto-populated in GSTR-3B from GSTR-2B (based on suppliers' GSTR-1)
- Can only claim ITC on invoices appearing in GSTR-2B — if supplier hasn't filed, ITC is blocked
- ITC on goods/services used for personal purposes or exempted supplies is blocked
- Blocked credits (Section 17(5)): Motor vehicles (personal use), food and beverages, beauty treatments, club memberships, construction for immovable property — ITC not available
- Reconcile GSTR-2B with purchase register every month before claiming ITC
Consequences of Not Filing GST Returns
- Late fee: Accumulates daily until filing — can become very large for multiple missed months
- ITC blocked for buyer: If you don't file GSTR-1, your customers cannot claim ITC on your invoices — damaging business relationships
- GSTIN cancellation: Non-filing for 6 consecutive months (regular) or 3 consecutive quarters (composition) triggers suo motu cancellation by the department
- Best judgement assessment: Officer can assess tax liability based on available data
- Interest: 18% per annum on outstanding tax from due date
GST Return Filing Tips
- File GSTR-1 before GSTR-3B: GSTR-3B data is auto-populated from GSTR-1 and GSTR-2B
- Reconcile GSTR-2B monthly: Match purchase invoices with GSTR-2B before claiming ITC
- Set calendar reminders: GST return dates are fixed — calendar alerts prevent late fees
- File nil returns: Even with zero turnover, file nil GSTR-1 and GSTR-3B to avoid late fees
- Use IFF in QRMP: Upload large invoices via IFF in non-quarter months so B2B customers get ITC timely
- Keep digital records: Maintain invoice-level records for at least 6 years (GST audit period)