How to File GSTR-1 for Small Businesses
Small businesses in Delhi can easily file GSTR-1 under the QRMP scheme if turnover remains below ₹5 crore. Monthly filing applies only to larger businesses, making compliance simpler for shops and traders.
GST Compliance Experts offers hassle-free GST return filing services that handle portal navigation, data entry, and timely submission for small enterprises.
Who Files GSTR-1?
All GST-registered regular taxpayers must file GSTR-1, even if their sales are nil (nil return). Composition scheme dealers and TDS deductors are exempt.
Small businesses qualify for quarterly filing under QRMP if the aggregate turnover ≤ ₹5 crore in the previous year.
Filing Frequency for Small Businesses
| Turnover | Filing Type | Due Date |
| ≤ ₹5 Crore | Quarterly (QRMP) | 13th of the month after quarter |
| > ₹5 Crore | Monthly | 11th of next month |
| Nil Returns | Same as above | Same deadlines |
QRMP filers report B2B invoices monthly via IFF (Invoice Furnishing Facility) for buyer ITC, then file a complete quarterly GSTR-1.
Step-by-Step Online Filing Process
Step 1: Log in and Select Period
- Visit gst.gov.in → Login with GSTIN/password
- Go to Services → Returns → Returns Dashboard
- Select Financial Year and tax period (month/quarter)
Step 2: Choose Preparation Method
- Prepare Online – Suitable for <100 invoices
- Prepare Offline – Excel utility for bulk uploads
- Accounting Software – API integration (recommended)
Step 3: Fill Key Tables
4A/4B/4C – B2B Invoices
- Customer GSTIN, invoice number, date, value, tax
- Auto-populates from IFF for QRMP filers
5A/5B – B2C Invoices
- Interstate > ₹2.5 lakh: invoice-wise
- Others: consolidated state-wise summary
6A/6B/6C – Credit/Debit Notes
- Original invoice reference mandatory
12 – HSN Summary
- 6/8-digit HSN/SAC codes required
Step 4: Review and Generate Summary
Preview all tables for accuracy. System auto-calculates totals and flags errors.
Step 5: Submit GSTR-1
Click Submit (data freezes after submission). No edits possible post-submission.
Step 6: File Return
- EVC (OTP) – Most common for small businesses
- DSC – Mandatory for companies/LLPs
ARN generated confirms successful filing
Offline Tool Method (Recommended)
- Download the Returns Offline Tool from the GST portal
- Generate a JSON file from sales data
- Import invoices table-wise
- Validate and generate return JSON
- Upload on portal → Submit/File
Perfect for 100+ invoices or bulk corrections.
Data Preparation Checklist
Before filing, organise:
- Sales register with GSTIN/HSN/tax breakup
- B2B customer GSTIN verification
- Credit/debit note records
- E-way bill numbers (cross-checked)
- Export invoice details (LUT/bond reference)
Common Mistakes to Avoid
- Duplicate IFF + quarterly entries for QRMP filers
- Wrong HSN/SAC (8-digit mandatory)
- Missing interstate B2C-large invoices (>₹2.5L)
- Incorrect place of supply (state code)
- Late filing (₹50/day penalty)
Nil Return Filing (Zero Sales)
Even without transactions:
- Login → Select period → Prepare Online
- All tables remain zero → Submit/File
- Takes 2 minutes, avoids late fees
QRMP Special Instructions
- Jan-Mar Quarter: Report Feb/Mar B2B via IFF by 13th Feb/13th Mar
- File complete Q1 GSTR-1 by 13th April (includes Jan + IFF data)
- IFF invoices auto-populate in the quarterly return
When to Use Professional Services
Small businesses benefit from expert filing when:
- High invoice volume (>200/month)
- Frequent amendments needed
- Export/RCM transactions
- Audit/notice history
Our GST return filing services handle portal filings, data reconciliation, and compliance ratings for stress-free GSTR-1 submission.
Post-Filing Actions
- Download filed GSTR-1 PDF (proof)
- Save the ARN number
- Check the buyer GSTR-2A population
- Reconcile with GSTR-3B preparation
Regular filing maintains a 90%+ compliance rating, unlocking faster refunds and reduced scrutiny.
