Complete Guide to GST Return Filing in India
After obtaining GST registration, every registered taxpayer must file GST returns at regular intervals — monthly, quarterly, or annually depending on their registration type and turnover. GST return filing is the process of reporting your sales (outward supplies), purchases (inward supplies), tax collected, Input Tax Credit (ITC) claimed, and net tax paid to the government.
Failure to file GST returns on time attracts late fees of ₹50 per day (₹20/day for nil returns) per return, plus 18% annual interest on unpaid tax. Repeated non-filing can lead to GST registration suspension or cancellation. LegalPehchan's expert CA team ensures your returns are filed accurately and on time every month.
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.
GSTR-1 vs GSTR-3B — Understanding the Difference
| 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 |