Who is required to register for GST
GST registration is mandatory if your aggregate turnover in a financial year exceeds Rs. 20 lakh for service providers (Rs. 10 lakh in special category states like Himachal Pradesh, Uttarakhand, and northeastern states). For goods suppliers, the threshold is Rs. 40 lakh in most states. Regardless of turnover, you must register if you make inter-state supplies, sell through e-commerce platforms, are required to pay tax under reverse charge mechanism, or are a non-resident taxable person. Voluntary registration is also allowed and often beneficial for credibility and ITC claims.
Documents you need before applying
For a sole proprietorship: PAN card and Aadhaar of the proprietor, photograph, address proof of the business (electricity bill, rent agreement, or property tax receipt), bank account details (cancelled cheque or bank statement), and email ID and mobile number. For a Private Limited Company: PAN of the company, Certificate of Incorporation, MOA and AOA, PAN and Aadhaar of all directors, board resolution authorising the signatory, registered office address proof, and bank account details of the company.
Step 1: Apply on the GST portal
Visit gst.gov.in and click on Register Now under Taxpayers. Select New Registration and fill in Part A of the application: legal name of business (as in PAN), PAN, email, and mobile number. An OTP will be sent to verify your email and mobile. Once verified, you receive a Temporary Reference Number (TRN) on your registered email and mobile.
Step 2: Complete Part B using your TRN
Log in with your TRN and complete Part B of the registration form. This includes business details (trade name, constitution of business, date of commencement), principal place of business address and supporting documents, details of additional places of business if any, details of goods and services (HSN codes for goods, SAC codes for services), bank account details, and details of all promoters and partners with identity and address proofs.
Step 3: Aadhaar authentication or office verification
Since 2020, applicants can opt for Aadhaar authentication to speed up the process. If Aadhaar authentication is successful, the GSTIN is typically issued within 3 working days. If you skip Aadhaar authentication, a GST officer may conduct a physical verification of your business premises, which can take 7 to 30 days depending on the jurisdiction and officer workload.
Step 4: Receive your GSTIN
Once the application is approved, you receive a 15-digit GSTIN (GST Identification Number) and a GST Registration Certificate in Form REG-06. The first two digits of the GSTIN are your state code (24 for Gujarat), the next 10 are your PAN, followed by an entity number, a blank digit, and a check digit. Download the certificate from the GST portal and display it at your principal place of business.
What you must do after getting your GSTIN
Display your GSTIN on all invoices, delivery challans, and business signboards. Issue GST-compliant invoices for all taxable supplies. File GSTR-1 by the 11th of the following month (or quarterly under QRMP). File GSTR-3B and pay tax by the 20th of the following month. Maintain records of all purchases and sales for at least 6 years. If your turnover exceeds Rs. 5 crore, e-invoicing is mandatory and you must integrate with the IRP (Invoice Registration Portal).
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