Isha Purohit

Expert

Published on: Jun 24, 2026

How to Apply for a GST Number?

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GST was introduced in India on 1st July 2017 and has since replaced various previously imposed indirect taxes such as Service Tax, Excise, VAT, etc. GST registration is necessary for all taxable persons conducting business in India and providing goods with an aggregate turnover exceeding Rs. 40 lacs. Persons providing services must register if their aggregate turnover exceeds Rs. 20 lacs. Regarding GST, the foremost thing any business must do is apply for the GST Registration Number. GST registration is PAN-based and state specific depending upon the location of the business/supplier.

Decoding the GST Number

All businesses registered for GST Registration receive a unique GST Registration number, also known as a GST Identification Number (GSTIN). GSTIN is a 15-digit PAN-based identification number issued by the tax department after your application is approved. GSTIN consists of the following elements:

  • The first two digits denote the State code.
  • The next ten digits denote the owner’s PAN identification number.
  • The following two digits denote the Entity code.
  • The fifteenth digit denotes the Checksum digit.

Types of GST

  • Required Registration- Under some circumstances, the dealer may need to register for GST regardless of revenue.
  • Voluntary Registration- Businesses that do not need to register for GST compulsorily can do so voluntarily.
  • Composition Scheme- Any taxpayer with a turnover of less than Rs. 1.5 crore may opt for this scheme.
  • No Registration- The following category of persons are exempt from GST Registration:
    • Businesses whose annual turnover does not exceed Rs.40 lacs for goods or Rs.20 lacs for services.
    • Businesses that are exempt from mandatory registration.
    • Persons providing goods or services exempt from GST or not subject to GST.
    • Agriculturists providing crops obtained by land cultivation.

Benefits of GST Registration-

Persons registered under the GST can access the following benefits:

  • Unlike the former VAT and Service Tax, only one consolidated return must be filed under the GST.
  • Being officially acknowledged as a provider of goods or services.
  • Complication-free inter-state movement of goods for e-commerce operators.
  • Reduction in unnecessary transportation costs due to relaxation of previous restrictions on inter-state movement of goods.
  • Obtaining eligibility to use various advantages and benefits provided by the GST Laws.

Apply for GST Number through the official portal-

  • Visit the GST Portal through the official link - / and select the "Register Now" option under the "Taxpayers" tab.
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  • Select the "New Registration" option and fill out the required details. Click “Proceed.”
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  • Next, the OTP verification page appears. Enter the two OTPs sent to the email ID and mobile number, then click "Proceed."
  • The Temporary Reference Number (TRN) will be displayed on the screen. Make a note of the TRN for further use in the process.
  • Go to the GST portal again and select "Register" from the "Taxpayers" option.
  • Select "Temporary Reference Number (TRN)" and enter your TRN number and the captcha input. Click "Proceed".
  • Next, complete the OTP verification through email and mobile and click “Proceed.”
  • The next page will display the status of your application. Click on the edit icon in red to start the GST registration process.
  • On the next page, submit the necessary documentation and business details to proceed to verification.
  • Review the declaration on the “Verification” page and apply for DSC (Digital Signature Certificate) or EVC. You can also use the e-sign method, where the phone number associated with the Aadhaar card will receive an OTP.
  • A success message will appear on the screen after completion. The registered email address and phone number will receive the Application Reference Number (ARN) and an acknowledgment. You can also check the ARN status using the GST Portal.
You can quickly obtain a GST Registration Number for your business through IndiaFilings.  
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Frequently Asked Questions

Common questions about GST Number Application Guide for Indian Businesses.

A GST Number, or GSTIN (Goods and Services Tax Identification Number), is a 15-digit unique identification number issued by the tax department to businesses registered under the Goods and Services Tax (GST) regime. It is a PAN-based number that contains details about the state, entity, and ownership of the business.
All taxable persons conducting business in India and providing goods with an aggregate turnover exceeding Rs. 40 lacs, or providing services with an aggregate turnover exceeding Rs. 20 lacs, must register for GST. Additionally, certain businesses may need to register for GST regardless of their turnover under specific circumstances.
Some benefits of GST registration include the convenience of filing only one consolidated return, official recognition as a goods or services provider, hassle-free inter-state movement of goods for e-commerce operators, reduced transportation costs, and eligibility for various advantages and benefits provided by GST laws.
To apply for a GST Number on the official portal, visit the GST Portal, select "Register Now" under the "Taxpayers" tab, fill out the required details, verify OTPs, and obtain a Temporary Reference Number (TRN). Then, proceed with the registration process, submit necessary documentation and business details, and complete the verification process.
The composition scheme is an option available for taxpayers with an annual turnover of less than Rs. 1.5 crore. Under this scheme, businesses can pay a lower rate of tax and are required to follow simplified compliance requirements.
The first two digits of a GSTIN denote the state code, indicating the state in which the business is registered for GST.
Yes, certain categories of persons are exempt from GST registration, including businesses whose annual turnover does not exceed Rs. 40 lacs for goods or Rs. 20 lacs for services, businesses exempt from mandatory registration, persons providing goods or services exempt from GST or not subject to GST, and agriculturists providing crops obtained by land cultivation.
Yes, businesses that do not need to register for GST compulsorily can do so voluntarily.
The fifteenth digit in a GSTIN denotes the checksum digit, which is a unique verification code used to validate the authenticity of the GST Number.
After submitting your GST registration application, you will receive an Application Reference Number (ARN). You can check the status of your application using the ARN and the GST Portal.