What is GST Return?
A GST Return is an official document that every GST-registered taxpayer must file with the tax authorities, containing comprehensive details of income (sales/outward supplies), expenses (purchases/inward supplies), output tax collected on sales, input tax credit (ITC) claimed on purchases, and the net GST liability payable to the government.
After obtaining GST registration, every registered taxpayer must file GST returns at regular intervals — monthly, quarterly, or annually depending on their registration type, turnover, and business category. GST return filing is mandatory even if there are no business transactions during the period (nil return).
Failure to file GST returns on time attracts late fees of ₹50 per day per Act (₹25 CGST + ₹25 SGST), which means ₹50/day for regular returns. For nil returns, reduced late fee of ₹20/day applies (₹10 CGST + ₹10 SGST). Additionally, 18% annual interest is charged on unpaid tax from the due date. Repeated non-filing can lead to GST registration suspension or cancellation.
Who Should File GST Returns?
- Regular Taxpayers (Turnover above ₹5 crore): Must file monthly GSTR-1 and GSTR-3B plus annual GSTR-9 and GSTR-9C (if turnover exceeds ₹5 crore)
- Small Taxpayers (Turnover up to ₹5 crore): Can opt for Quarterly Return Monthly Payment (QRMP) scheme to file GSTR-1 and GSTR-3B quarterly instead of monthly
- Composition Dealers: File quarterly CMP-08 statement and annual GSTR-4 return with simplified compliance
- E-commerce Operators: Must file monthly GSTR-8 for Tax Collected at Source (TCS)
- TDS Deductors: Government departments and notified entities file monthly GSTR-7
- Non-Resident Taxpayers: File monthly GSTR-5 for the period of registration
- Input Service Distributors (ISD): File monthly GSTR-6 for ITC distribution
- OIDAR Service Providers: Online information database access/retrieval service providers file monthly GSTR-5A
Complete Guide to GST Return Filing in India 2026
LegalPehchan's expert CA team ensures your GST returns are filed accurately and on time every month. We handle data reconciliation, ITC matching with GSTR-2B, HSN code compliance, and timely filing to help you avoid penalties and notices. Our 100% online process means you simply share invoices via WhatsApp, and we handle everything else.
Key GST Returns — What, When & Who
📋 GSTR-1
Statement of all outward supplies (sales invoices). Mandatory for all regular taxpayers. Your buyers claim ITC based on your GSTR-1 data, so accuracy is critical.
📊 GSTR-3B
Monthly summary return showing total sales, purchases, ITC claimed, and net GST payable. Tax must be paid by the due date to avoid interest. Filed even if nil.
📁 GSTR-9 (Annual)
Annual GST return consolidating all 12 months' data. Mandatory for businesses with turnover above ₹2 crore. Others can file voluntarily. Reconciliation with books required.
📝 GSTR-4 (Composition)
Annual return for businesses registered under the Composition Scheme. Quarterly challan payment (CMP-08) is also required. Simpler filing with no ITC claims.
🏦 GSTR-7 (TDS)
For government departments and notified entities that deduct TDS (Tax Deducted at Source) under GST. Mandatory if you deduct GST TDS from supplier payments.
🛒 GSTR-8 (TCS)
For e-commerce operators (like Amazon, Flipkart) who collect TCS (Tax Collected at Source) at 1% from sellers on their platform. Filed by the marketplace, not the seller.
Detailed Overview of Major GST Returns
GSTR-1 - Details of Outward Supplies
GSTR-1 is a statement containing details of all outward supplies (sales) made during a tax period. This return must be filed by all regular GST taxpayers.
- Frequency: Monthly (for turnover above ₹5 crore) or Quarterly under QRMP scheme (for turnover up to ₹5 crore)
- Due Date: 11th of next month for monthly filers | 13th of month following quarter for quarterly filers
- Contents: B2B invoices, B2C large invoices (above ₹2.5 lakhs), exports, credit/debit notes, amendments to previous period invoices, HSN summary
- Importance: Your buyers claim Input Tax Credit based on your GSTR-1 data, so accuracy is critical
- Amendment: Can be amended in subsequent month's/quarter's GSTR-1
GSTR-3B - Summary Return & Tax Payment
GSTR-3B is a monthly/quarterly summary return where taxpayers declare their summary GST liabilities and pay tax. This is a self-declared return.
- Frequency: Monthly (for turnover above ₹5 crore) or Quarterly under QRMP scheme (for turnover up to ₹5 crore)
- Due Date: 20th of next month for monthly filers | 22nd (Category X states) or 24th (Category Y states) of month following quarter
- Contents: Summary of outward supplies, inward supplies liable to reverse charge, ITC claimed, tax payable, and tax paid
- Tax Payment: Tax must be paid before or while filing GSTR-3B to avoid 18% per annum interest
- Amendment: Cannot be directly amended; corrections made through annual return GSTR-9
Category X States: Chhattisgarh, Madhya Pradesh, Gujarat, Maharashtra, Karnataka, Goa, Kerala, Tamil Nadu, Telangana, Andhra Pradesh, Daman & Diu, Dadra & Nagar Haveli, Puducherry, Andaman & Nicobar Islands, Lakshadweep
Category Y States: Himachal Pradesh, Punjab, Uttarakhand, Haryana, Rajasthan, Uttar Pradesh, Bihar, Sikkim, Arunachal Pradesh, Nagaland, Manipur, Mizoram, Tripura, Meghalaya, Assam, West Bengal, Jharkhand, Odisha, Jammu & Kashmir, Ladakh, Chandigarh, Delhi
GSTR-9 - Annual Return
GSTR-9 is an annual consolidation return that summarizes all monthly/quarterly returns filed during the financial year.
- Applicability: Mandatory for regular taxpayers with annual turnover above ₹2 crore; optional for others
- Due Date: 31st December of the year following the financial year (e.g., FY 2025-26 return due by 31st Dec 2026)
- Contents: Consolidated details of outward supplies, inward supplies, ITC claimed, tax paid, and reconciliation with books of accounts
- Sections: 19 sections covering turnover, ITC, tax paid, refunds, demands, and reconciliation
GSTR-9C - Reconciliation Statement & Audit
GSTR-9C is a reconciliation statement between annual return (GSTR-9) and audited financial statements, certified by CA/CMA.
- Applicability: Mandatory for taxpayers with annual turnover above ₹5 crore
- Due Date: 31st December of the year following the financial year
- Certification: Must be certified by Chartered Accountant or Cost Accountant
- Purpose: Reconcile turnover declared in GST returns with audited financial statements
GSTR-4 - Composition Scheme Annual Return
GSTR-4 is an annual return filed by taxpayers registered under the Composition Scheme.
- Applicability: Composition dealers (turnover up to ₹1.5 crore)
- Due Date: 30th April following the end of financial year
- Quarterly Payment: Composition dealers must also file quarterly CMP-08 statement by 18th of month following quarter
- Tax Rate: 1% for traders, 2% for manufacturers, 5% for restaurants (no ITC allowed)
GSTR-7 - TDS Return
GSTR-7 is filed by government departments, agencies, and notified entities that deduct Tax Deducted at Source under GST.
- Applicability: Government departments and notified persons deducting TDS under Section 51 of CGST Act
- Due Date: 10th of the month following the tax period
- TDS Rate: 2% (1% CGST + 1% SGST) on payments to suppliers
- Contents: Details of TDS deducted, liability, and TDS certificates issued
GSTR-8 - E-commerce Operator TCS Return
GSTR-8 is filed by e-commerce operators who collect Tax Collected at Source from sellers on their platform.
- Applicability: E-commerce operators like Amazon, Flipkart, Swiggy, Zomato, Ola, Uber
- Due Date: 10th of the month following the tax period
- TCS Rate: 1% (0.5% CGST + 0.5% SGST) on net taxable value of supplies
- Contents: Details of supplies made through platform, TCS collected, and TCS certificates issued
GSTR-1 vs GSTR-3B — Understanding the Difference
Many taxpayers confuse GSTR-1 and GSTR-3B. Here's a clear comparison:
| Parameter | GSTR-1 | GSTR-3B |
|---|---|---|
| Type | Outward supply details | Summary return + tax payment |
| Frequency | Monthly or Quarterly (QRMP) | Monthly (large) or Quarterly (QRMP) |
| Tax Payment | No tax payment | Tax must be paid |
| ITC Claim | No ITC claim | ITC claimed here |
| Amendment | Can amend in next period | Cannot amend directly |
| Impact | Buyer's GSTR-2B affected | Your tax liability settled |
QRMP Scheme — Quarterly Filing for Small Businesses
The Quarterly Return Monthly Payment (QRMP) scheme allows businesses with annual turnover up to ₹5 crores to file GSTR-1 and GSTR-3B quarterly (4 times a year instead of 12). However, tax must still be paid monthly through a simple Fixed Sum Method (FSM) or Self-Assessment challan. This significantly reduces compliance burden for small businesses.
- ✅ File GSTR-1 only 4 times per year (instead of 12)
- ✅ File GSTR-3B only 4 times per year
- ✅ Pay tax monthly via simple challan (no full return needed)
- ✅ Can switch between Monthly and QRMP twice a year
- ⚠️ Buyers cannot see your outward supply data monthly (delayed GSTR-2B update)
GST Return Filing Process with LegalPehchan
- 📂 Step 1: Share sales invoices and purchase data via WhatsApp or email each month
- 🔍 Step 2: Our CA reviews, reconciles data, and identifies ITC mismatches
- 📝 Step 3: We prepare GSTR-1 and GSTR-3B with accurate data
- ✅ Step 4: You approve the tax amount payable
- 💳 Step 5: You pay tax through GST portal; we file the returns
- 📧 Step 6: Filed ARN confirmation sent to your email
Common GST Return Mistakes to Avoid
- ❌ Mismatch between GSTR-1 and GSTR-3B data
- ❌ Claiming ITC for ineligible items (food, personal expenses)
- ❌ Forgetting to file nil returns (even nil returns attract ₹20/day late fee)
- ❌ Wrong GSTIN of supplier on purchase invoices
- ❌ Not reconciling GSTR-2B with books before claiming ITC
- ❌ Missing the HSN summary in GSTR-1 (mandatory for turnover above ₹5 crore)
- ❌ Not reporting B2C (unregistered buyer) sales separately
- ❌ Filing after the due date without paying late fee
GST Late Fee Structure (2024–25)
| Return Type | Late Fee (With Tax) | Late Fee (Nil Return) | Max Cap |
|---|---|---|---|
| GSTR-1 | ₹50/day | ₹20/day | ₹10,000 |
| GSTR-3B | ₹50/day + 18% interest | ₹20/day | ₹10,000 |
| GSTR-9 | ₹200/day | ₹200/day | 0.25% of turnover |
| GSTR-4 | ₹50/day | ₹20/day | ₹2,000 |