GSTIN: Definition, Registration Process, Aadhaar Linking & Compliance

12 Jul 2023

What is GSTIN?

GSTIN stands for Goods and Services Tax Identification Number. It is a unique 15-digit alphanumeric identification number assigned to every individual or business entity registered under the Goods and Services Tax (GST) system in India. The GSTIN serves as a unique identifier for the taxpayer and is used for all GST-related activities, including tax filing, invoicing, and compliance.

Here is an example of a GSTIN format: 29ABCDE1234F1ZW

Let’s break down the components of the example GSTIN:

  1. The first two digits represent the state code. In this case, “29” represents the state of Karnataka.
  2. The next ten digits are the Permanent Account Number (PAN) of the taxpayer. In this example, “ABCDE1234F” is the PAN.
  3. The thirteenth digit is the entity code, which can be alphabets or numbers. In this example, “1” represents the entity code.
  4. The fourteenth digit is the entity type code, which indicates the type of entity. “Z” represents the entity type as a taxpayer registered as a business entity.
  5. The fifteenth digit is the check digit, which is calculated based on the preceding digits and is used for verification purposes.

It is important to note that the state code, PAN, entity code, entity type code, and check digit will vary for each GSTIN, making it a unique identifier for each registered taxpayer.

Who Needs to Obtain a GSTIN?

GSTIN (Goods and Services Tax Identification Number) is required to be obtained by various entities under the Goods and Services Tax (GST) regime in countries like India. The following entities need to obtain a GSTIN:

  1. Business entities: Any business involved in the supply of goods or services with an annual turnover above the threshold limit specified by the government is required to obtain a GSTIN. The threshold limit may vary from country to country. In India, for example, businesses with an annual turnover exceeding INR 40 lakhs (INR 20 lakhs for certain special category states) are required to register for GST.
  2. Manufacturers: Manufacturers of goods, regardless of their turnover, are required to obtain a GSTIN.
  3. Service providers: Service providers, including professionals such as consultants, lawyers, doctors, architects, etc., are required to obtain a GSTIN if their annual turnover exceeds the threshold limit specified by the government.
  4. E-commerce operators: Online platforms or marketplaces that facilitate the supply of goods or services between buyers and sellers are required to obtain a GSTIN.
  5. Input service distributors: Businesses that receive services and distribute the input tax credit to other branches or units of the same organization need to obtain a GSTIN.
  6. Casual taxable persons: Individuals or businesses that occasionally undertake taxable supplies but do not have a fixed place of business are considered casual taxable persons and are required to obtain a GSTIN for the duration of the business activity.
  7. Non-resident taxable persons: Non-resident individuals or businesses that undertake taxable supplies in a country and do not have a fixed place of business there are required to obtain a GSTIN for the duration of the business activity.

It’s important to note that the specific requirements for obtaining a GSTIN may vary depending on the country’s GST laws and regulations. It is advisable to consult the local tax authorities or a qualified tax professional to understand the exact requirements and procedures for obtaining a GSTIN in a specific jurisdiction.

Benefits of Obtaining a GSTIN

Obtaining a GSTIN (Goods and Services Tax Identification Number) offers several benefits for businesses and individuals operating under the Goods and Services Tax (GST) regime. Here are some of the key benefits:

  1. Legal recognition: A GSTIN provides legal recognition to businesses and individuals as registered taxpayers under the GST system. It establishes their compliance with tax laws and enables them to participate in legal trade activities.
  2. Input tax credit: GST registered entities can claim input tax credit for the GST paid on purchases. This means they can offset the GST paid on inputs (purchases) against the GST collected on outputs (sales). This helps reduce the overall tax liability and improves cash flow.
  3. Seamless interstate trade: GSTIN facilitates the smooth movement of goods and services across state boundaries. It eliminates the earlier cascading effect of multiple taxes and simplifies the process of inter-state transactions by unifying taxes under a single GST structure.
  4. Increased competitiveness: Being registered under GST can enhance the competitiveness of businesses. It allows them to take advantage of input tax credits, which can lead to cost savings and potentially lower prices for customers. This can help businesses attract more customers and compete effectively in the market.
  5. Compliance benefits: GST registration ensures compliance with tax regulations. It involves regular filing of GST returns, which helps in maintaining accurate financial records and ensures transparency in business operations. Non-compliance can result in penalties and legal consequences, so obtaining a GSTIN helps avoid such issues.
  6. Government contracts and tenders: Many government contracts and tenders require GST registration as a mandatory eligibility criterion. Having a GSTIN enables businesses to participate in such opportunities and expand their potential customer base.
  7. Business expansion: GST registration is often a prerequisite for expanding business operations. It enables businesses to establish branches or warehouses in different states and facilitates seamless compliance with GST regulations across multiple locations.
  8. Access to input tax credit chain: By obtaining a GSTIN, businesses become a part of the input tax credit chain. They can purchase inputs from GST-registered suppliers and claim input tax credit on those purchases. This helps maintain transparency in the supply chain and reduces the burden of taxes at each stage.

It’s important to note that the specific benefits of obtaining a GSTIN may vary from country to country, depending on the local GST laws and regulations.

GSTIN Registration Process for Individuals and SMEs

The GSTIN registration process for individuals and SMEs is relatively simple and straightforward. The following are the basic steps involved in the process:

  1. Create a GSTN account. The first step is to create a GSTN account on the GSTN portal. You can do this by visiting the website and clicking on the “Register” tab. You will need to provide some basic information, such as your name, PAN, and address. You will also need to upload a scanned copy of your PAN card.
  2. Apply for GST registration. Once you have created a GSTN account, you can apply online for GST registration. You will need to provide some additional information, such as your business details, turnover, and bank account details.
  3. Upload documents. You will need to upload some documents as part of the GST registration process. These documents include:
    • A copy of your PAN card
    • A copy of your Aadhaar card
    • A copy of your business registration certificate
    • A copy of your bank account statement
  4. Pay the GST registration fee. There is a GST registration fee that you need to pay as part of the process. The fee depends on the type of entity you are registering as.
  5. Obtain your GSTIN. Once you have submitted all of the required information and documents, and paid the GST registration fee, you will be issued a GSTIN. Your GSTIN will be a 15-digit alphanumeric number that will be used to identify your business for GST purposes.

The GSTIN registration process for individuals and SMEs is relatively simple and straightforward.

However, there are some important things to keep in mind:

  1. You must apply for GST registration within 30 days of starting your business.
  2. You must have a valid PAN card and Aadhaar card to apply for GST registration.
  3. You must submit all of the required documents as part of the GST registration process.
  4. You must pay the GST registration fee.

Once you have obtained your GSTIN, you will be able to start complying with the GST laws in India. You will need to start filing GST returns, issuing GST invoices, and collecting GST from your customers.

Things you should know before applying GSTIN

  1. Determine eligibility: Verify if you meet the eligibility criteria for GST registration, considering factors such as turnover threshold, business type, and location.
  2. Gather required documents: Collect the necessary documents, including identification proof, address proof, PAN card, bank account details, business registration documents (if applicable), and any other specific documents required by the tax authorities.
  3. Obtain a Digital Signature Certificate (DSC): For certain categories of taxpayers, such as companies, LLPs (Limited Liability Partnerships), and individuals who are required to get their accounts audited, a DSC is mandatory for GST registration. A DSC is a digital file that contains the unique electronic signature of the applicant. It ensures the authenticity and integrity of the information submitted online. To obtain a DSC, you need to engage a licensed Certifying Authority (CA) authorized by the government.
  4. Online registration: Visit the official GST portal or the tax department’s website and navigate to the GST registration section. Fill out the online registration form with accurate details, including personal information, business details, turnover, and other required information.
  5. Upload documents: Scan and upload the necessary documents, including the DSC in the specified format. Ensure that the documents are clear and legible.
  6. Verification process: The tax authorities will review the application and conduct a verification process. This may involve scrutinizing the provided information and documents, as well as verifying the authenticity of the DSC.
  7. Clarifications and additional information: If the tax authorities require any clarifications or additional information, they may raise queries or requests for further documentation. Respond promptly and provide the requested information within the specified timeline.
  8. Physical verification (if required): In some cases, the tax authorities may conduct a physical verification of the business premises before granting the GSTIN. Ensure that the premises are ready for inspection if required.
  9. GSTIN allocation: Once the verification process is complete, and all requirements are met, the tax authorities will allocate the GSTIN. The GSTIN will be communicated to the applicant through email or via the online portal.
  10. GST compliance: After obtaining the GSTIN, ensure timely compliance with GST regulations, including filing regular GST returns, maintaining proper records, and adhering to the applicable GST rates and guidelines.

Linking Aadhaar with GSTIN

Linking Aadhaar with GSTIN is a mandatory requirement for all businesses and individuals who are registered under the Goods and Services Tax (GST) regime in India. The linking of Aadhaar with GSTIN helps to verify the identity of taxpayers and prevent fraud.

There are two ways to link Aadhaar with GSTIN:

  1. Through the GST portal: You can link your Aadhaar with your GSTIN through the GST portal by following these steps:
    • Go to the GST portal and login with your credentials.
    • Click on the “My Profile” tab.
    • Click on the “Aadhaar Authentication Status” link.
    • Click on the “Send Aadhaar Authentication Link” button.
    • You will receive an authentication link on your registered mobile number and email ID.
    • Click on the authentication link and enter your Aadhaar number and OTP.
    • Your Aadhaar will be linked with your GSTIN.
  2. Through the Aadhaar Enabled Payment System (AEPS): You can also link your Aadhaar with your GSTIN through the AEPS by following these steps:
    • Visit a bank or authorized AEPS agent.
    • Provide your GSTIN and Aadhaar number to the agent.
    • The agent will verify your Aadhaar number and link it with your GSTIN.

Once your Aadhaar is linked with your GSTIN, you will be able to use your Aadhaar number to file GST returns, make payments, and avail of other benefits under the GST regime.

Here are some of the benefits of linking Aadhaar with GSTIN:

  1. It helps to verify the identity of taxpayers and prevent fraud.
  2. It makes it easier for taxpayers to file GST returns and make payments.
  3. It allows taxpayers to avail of other benefits under the GST regime.

If you have not yet linked your Aadhaar with your GSTIN, I recommend that you do so as soon as possible. It is a simple process that can be completed online or through the AEPS.

Maintaining GSTIN Compliance

Maintaining GSTIN compliance is crucial for businesses and individuals registered under the Goods and Services Tax (GST) regime in India. It involves adhering to GST laws and regulations. Here are some steps to maintain GSTIN compliance:

  1. File GST returns on time: Businesses and individuals must file GST returns monthly, quarterly, or annually, depending on their turnover. Timely filing of returns is vital for GSTIN compliance.
  2. Pay GST on time: It is essential to pay GST dues promptly. Timely payment of GST demonstrates compliance with the regulations.
  3. Maintain accurate records: Keeping precise records of GST transactions, including invoices, payments, and other relevant documents, is mandatory. Accurate record-keeping ensures GSTIN compliance.
  4. Comply with GST regulations: Apart from filing returns and paying GST, businesses and individuals need to adhere to other GST regulations. This includes rules related to input tax credit and reverse charge mechanism. Complying with all GST regulations is critical for maintaining GSTIN compliance.

Failure to maintain GSTIN compliance can lead to various consequences:

  1. Penalties: Non-compliance may result in penalties, the amount of which depends on the nature and severity of the violation.
  2. Suspension of registration: Businesses and individuals not maintaining GSTIN compliance risk having their registration suspended. This would prohibit them from issuing GST invoices or claiming input tax credit.
  3. Cancellation of registration: Failure to comply with GST regulations may lead to the cancellation of registration. This would prevent businesses and individuals from conducting transactions under the GST regime.

To maintain GSTIN compliance, consider the following additional tips:

  1. Use GST software: Utilize dedicated GST software solutions available in the market. These software tools automate tasks such as filing returns, paying GST, and maintaining accurate records.
  2. Seek assistance from a GST expert: If you are uncertain about any aspect of GSTIN compliance, consult a GST expert. They can provide guidance on understanding GST laws, regulations, and ensuring compliance.

By following these steps and tips, businesses and individuals can maintain GSTIN compliance, minimizing the risk of penalties or other adverse consequences.

GSTIN Amendments and Cancellations

Amending or cancelling a GSTIN is an important process for businesses and individuals registered under the Goods and Services Tax (GST) regime in India. Let’s delve into these processes with improved readability:

GSTIN Amendments

To rectify errors or omissions in GSTIN registration details (such as business name, address, or PAN number), GSTIN amendments are required.

Amendments can be conveniently made online through the secure GST portal, which facilitates GST registration, return filing, and payment.

GSTIN Cancellations

GSTIN cancellations are necessary when a business ceases to exist or is no longer obligated to be registered under the GST regime. For instance, a business may cancel its GSTIN due to closure or a change in the business model that renders GST registration unnecessary.

Similar to amendments, GSTIN cancellations can be processed through the GST portal.

Reasons for GSTIN Cancellations:

  1. Business closure or cessation of operations.
  2. Change in the business model resulting in no requirement for GST registration.
  3. Deregistration by the GST authorities.

Consequences of GSTIN Cancellations:

  1. Inability to issue GST invoices or claim input tax credit.
  2. Ineligibility for government tenders and contracts.
  3. Potential liability for penalties.

When considering GSTIN amendments or cancellations, consulting a GST expert is advisable to ensure adherence to the correct procedures.

Additional Tips for GSTIN Amendments and Cancellations:

  1. Prepare the Required Documentation: Gather necessary documents, such as business registration certificates, PAN cards, or cancellation notices, to support your request for amendment or cancellation.
  2. File the Correct Forms: Different forms must be filed depending on whether you are amending or cancelling your GSTIN. Find the appropriate forms on the GST portal.
  3. Pay the Appropriate Fees: Be aware of the applicable fees for amending or cancelling your GSTIN, as specified on the GST portal.

By following these tips, you can streamline the process and ensure a smooth and efficient GSTIN amendment or cancellation experience.


Obtaining and managing a GSTIN is crucial for individuals and SMEs operating under the GST regime. This guide has provided comprehensive information on the GSTIN registration process, compliance requirements, and other essential aspects.

By following the step-by-step instructions and leveraging the benefits of GSTIN, businesses and individuals can streamline their tax compliance, maximize input tax credit, and access various government incentives.

Stay updated with the latest regulations and refer to the respective government portals for accurate and up-to-date information. By maintaining compliance and optimizing your GSTIN, you can enhance your business operations and contribute to India’s economic growth.

Related blogs:-
Understanding the Types of Services Under the GST Regime in India
GST Registration vs. Voluntary Registration: Pro And Cons

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