Complete GST Filing Guide for Small Businesses in India
GST compliance can feel overwhelming for small business owners. This guide breaks down everything you need to know — from registration to monthly filing.
Who Needs GST Registration?
GST registration is mandatory if:
- Your annual turnover exceeds ₹40 lakhs (goods) or ₹20 lakhs (services)
- You make interstate supply of goods or services
- You sell through e-commerce platforms (Amazon, Flipkart, etc.)
- You are an input service distributor
- You are a casual taxable person or non-resident taxable person
Even if your turnover is below the threshold, voluntary registration is recommended if you deal with registered businesses to claim Input Tax Credit (ITC).
Documents Required for GST Registration
- PAN card of the business/proprietor
- Aadhaar card
- Business address proof (electricity bill, rent agreement)
- Bank account details (cancelled cheque/passbook)
- Passport-size photograph
- Digital Signature Certificate (for companies/LLPs)
Need help? Our GST experts in Guwahati handle the entire registration process.
Types of GST Returns
Here are the key returns every small business must know:
- GSTR-1: Outward supplies (sales) — filed monthly by 11th or quarterly (QRMP)
- GSTR-3B: Summary return with tax payment — filed monthly by 20th
- GSTR-4: For composition scheme dealers — filed annually
- GSTR-9: Annual return — filed by 31st December
- GSTR-9C: Reconciliation statement — for turnover above ₹5 crores
GST Composition Scheme
Small businesses with turnover up to ₹1.5 crores (goods) or ₹50 lakhs (services) can opt for the Composition Scheme:
- Pay tax at a flat rate (1% for goods, 6% for services)
- File only one quarterly return (CMP-08) and one annual return (GSTR-4)
- Cannot claim Input Tax Credit or issue tax invoices
- Cannot make interstate supply
Common GST Mistakes to Avoid
- Late filing: Penalty of ₹50/day (₹25 CGST + ₹25 SGST) for delayed returns
- Mismatched invoices: Ensure GSTR-1 matches GSTR-3B
- Not claiming ITC: Missing genuine input tax credits reduces profitability
- Ignoring notices: GST notices must be responded to within the deadline
- Wrong HSN/SAC codes: Can lead to classification disputes
Get Expert GST Assistance
Deka & Associates provides end-to-end GST services in Guwahati — from registration to monthly filing to notice handling. Our team ensures you stay compliant without the headache.