GST registration is mandatory for businesses with aggregate turnover exceeding ₹40 lakh (₹20 lakh for special category states) for goods, and ₹20 lakh (₹10 lakh for special states) for services. The process is entirely online via the official GST portal. Understanding eligibility, documentation, and the workflow ensures compliance without delays.
Eligibility and Mandatory Registration Triggers
If you supply goods or services across states, GST registration is mandatory even below ₹20 lakh turnover. Key registration triggers include:
- E-commerce sellers on Amazon, Flipkart, Meesho, or Shopify
- Interstate suppliers and service providers
- Freelancers offering design, IT, or consultancy services
- Foreign businesses supplying goods or services in India
- Temporary stalls and event-based sellers
Most clean applications are processed in 2-6 business days. Voluntary registration below the threshold offers input tax credit eligibility and B2B credibility.
Turnover Thresholds and Special Category States
Goods suppliers must register when turnover exceeds ₹40 lakh, while special category states have a ₹20 lakh threshold. Service providers face a ₹20 lakh limit, reduced to ₹10 lakh in special category states. Registration becomes mandatory within 30 days of crossing the threshold.
Step-by-Step Online Registration Process
Visit gst.gov.in and navigate to Services → Registration → New Registration. The process is fully online, but documentation and filing accuracy matter.
Registration workflow:
- Access the GST portal and select New Registration
- Enter taxpayer type, legal name, PAN, state, email, and mobile
- Complete OTP verification
- Save your Temporary Reference Number (TRN)
- Submit Part-B with detailed business and promoter information
- Complete Aadhaar authentication
- Receive Application Reference Number (ARN)
- Await GST department verification and approval
Registration Stage
| Timeline | Key Action | |
| Part-A Submission | Same day | Enter basic details and verify OTP |
| Part-B Submission | 1-2 days | Upload documents and business details |
| Aadhaar Authentication | 1-3 days | Complete e-Sign verification |
| Department Verification | 3-15 days | GST team reviews application |
| Certificate Issuance | 2-6 days | Download GSTIN and certificate |
If clarification is needed, respond within 7 days.
Part-A: Initial Registration Details
Part-B: Detailed Business and Document Submission
Essential Documents and Common Registration Mistakes
- PAN card (copy)
- Aadhaar card (copy)
- Business address proof (utility bill, lease agreement, or property tax receipt)
- Bank account details and cancelled cheque
- HSN/SAC codes
- Authorized signatory identification proof
- Partnership deed or MOA/AOA for companies
Document Type
| Format | Common Error | |
| Identity Proof | PDF/JPG | Name mismatch with PAN |
| Address Proof | PDF/JPG | Outdated or unclear document |
| Bank Details | Cancelled cheque | Account holder name mismatch |
| Business Classification | HSN/SAC codes | Incorrect or missing codes |
Document Preparation Best Practices
Avoiding Clarification Queries and Rejections
Frequently Asked Questions
Is GST registration mandatory for all new businesses?
GST registration is mandatory for businesses exceeding ₹40 lakh turnover for goods and ₹20 lakh for services, with lower thresholds in special category states.
How long does GST registration take?
Processing typically takes 3-15 working days, depending on application completeness and verification.
What is the cost of GST registration?
Registration is free of charge through the official GST portal.
Can I register for GST if my business is below the turnover threshold?
Yes, voluntary registration is available and offers input tax credit eligibility and B2B credibility benefits.
What happens if I don’t register for GST when mandatory?
Non-compliance attracts penalties and GSTIN suspension.
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