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What is a GST number?

A GST Registration Number officially called a GSTIN (Goods and Services Tax Identification Number) — is a unique 15-digit code issued by the Government of India to every registered business. It is used to track all tax transactions, file returns, and claim input tax credit (ITC). Without a GSTIN, you cannot legally collect GST from your customers or sell on major platforms like Amazon, Flipkart, or Meesho.

Who needs GST registration?

You must register for GST if any of the following apply to you:

Turnover > ₹20 lakh (services)
Turnover > ₹40 lakh (goods)
Selling on e-commerce platforms
Inter-state supply of goods
Import/export business
Voluntary registration

 Tip for dropshippers: Even if your turnover is below the threshold, register voluntarily from day one. Amazon, Flipkart, and Meesho all require a GSTIN to list products — no exceptions.

Documents required

PAN Card
Aadhaar Card
Cancelled cheque
Address proof
Passport photo
Active email & mobile

All documents must be in JPG or PDF format and under 1MB each.

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How to get a GST Registration Number in India

Step-by-step registration process

Visit the GST portal

Go to gst.gov.in → click “Register Now” under the Taxpayers section → select “New Registration.”

Fill Part A — basic details

Enter your PAN, email, and mobile number. Verify both OTPs. You will receive a Temporary Reference Number (TRN) — save it immediately.

Login with your TRN

Return to gst.gov.in and log in using your TRN. You have 15 days to complete Part B before the TRN expires.

Fill Part B — full application

Complete all 10 sections: business details, promoter info, authorised signatory, principal place of business, HSN codes for your goods/services, and bank account details.

Upload documents

Upload your PAN, Aadhaar, photograph, bank proof, and business address proof. Each file must be under 1MB in JPG or PDF format.

Aadhaar authentication

Choose Aadhaar OTP verification — this speeds approval to 3–7 days. Skipping this may trigger a physical inspection causing delays of 2–3 weeks.

Submit & get ARN

Submit using EVC (OTP on your mobile) for individuals. You will receive an Application Reference Number (ARN) to track your application status.

Receive your GSTIN

Once approved, your 15-digit GSTIN is emailed to you. You can also download your GST certificate from the portal under “User Services.”

Understanding your GSTIN

27ABCDE1234F1Z5

27State code
ABCDE1234FYour PAN
1Entity number
ZAlways “Z”
5Check digit

After getting your GST number

 Important: Getting your GSTIN is just the beginning. You must file returns regularly or face penalties of ₹50–₹200 per day.

File GSTR-1 monthly (sales)
File GSTR-3B monthly (summary)
Issue GST invoices to customers
Keep supplier invoices safe
Claim input tax credit (ITC)
Hire a CA for easy compliance

Frequently asked questions (GST Registration Number)

Is GST registration free?
Yes — registration on the official gst.gov.in portal is completely free. Be careful of third-party websites that charge fees.
How long does GST registration take?
With Aadhaar OTP verification: 3–7 working days. Without Aadhaar verification: 2–3 weeks, as a physical inspection may be required.
Can I use my personal PAN for a sole proprietorship?
Yes. For sole proprietors, the GSTIN is linked directly to your personal PAN. You don’t need a separate business PAN.
Can I sell on Meesho or Amazon without GST?
No. All major e-commerce platforms in India legally require a valid GSTIN before you can list and sell any products, regardless of your turnover.
What is HSN code and do I need it?
HSN (Harmonized System of Nomenclature) is a code that classifies your product type. You need to enter it during registration. You can find your HSN code on the GST portal’s HSN search tool.
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