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Register for GST – A Complete Guide

Quick Summary

  • GST registration becomes mandatory if your annual turnover crosses ₹40 lakh for goods or ₹20 lakh for services in general category states. In special category states, the limit is ₹20 lakh for goods and ₹10 lakh for services.
  • In some cases, registration is compulsory even if turnover is below the usual threshold. This includes interstate suppliers, e-commerce sellers, casual taxable persons, non-resident taxable persons, and TDS deductors.
  • There are 9 commonly recognised types of GST registration in India, including Regular, Composition, Casual Taxable Person, Non-Resident, ISD, UIN, E-Commerce Operator, TDS Deductor, and OIDAR.
  • Your GSTIN is a 15-digit identification number. The first 2 digits represent the state code, the next 10 digits are your PAN, the 13th digit shows the entity number, the 14th digit is Z, and the 15th digit is a check digit.
  • As of November 2025, newly registered businesses must link bank account details within 30 days of getting the GSTIN or before filing the first return, whichever happens earlier. If this is not done, the registration is automatically suspended.
  • After submitting the application, you can track its status through the Application Reference Number (ARN) on gst.gov.in under Services > Registration > Track Application Status.
  • GST registration can later be amended, cancelled voluntarily through Form GST REG-16, or restored in certain cases through Form GST REG-21 within 30 days of cancellation.

Goods and service tax (GST) is a value-added tax that has replaced several indirect taxes in India. It is a comprehensive and destination-based tax levied when goods and services are supplied nationwide. Businesses must compulsorily register for GST if and when their turnover exceeds a specific threshold limit. Registering for GST can be confusing and overwhelming for many business owners. We have provided a complete guide to understanding the GST registration process in India.

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What is GST Registration?

GST registration is the process of enrolling your business under the Goods and Services Tax system in India. If your business turnover goes beyond the prescribed limit, registration becomes mandatory. Once your application is approved, you get a GSTIN, which is the tax identity number of your business under GST.

This number allows you to collect GST from customers, file returns, and comply with tax rules in a lawful way. Registration is also required in certain cases even if turnover is low, such as online selling or interstate supply.

This guide is meant for business owners, founders, accountants, and anyone who wants to understand how GST registration works from start to finish, including application, tracking, amendment, and cancellation.

GST Registration: Key Updates for 2025-26

A few GSTN and CBIC updates issued between February and November 2025 have affected the registration process. New applicants should keep these in mind before applying.

1. Bank Account Mandatory Within 30 Days

As per the GSTN Advisory dated 20 November 2025, newly registered businesses must add valid bank account details on the GST portal within 30 days of GSTIN issuance, or before filing the first GSTR-1 or IFF, whichever is earlier. If this is not done, the GST registration is suspended automatically.

2. Aadhaar Biometric Authentication Now Mandatory in Notified States

As per the GSTN Advisory dated 12 February 2025, applicants in notified states have to complete biometric-based Aadhaar authentication at a designated GST Suvidha Kendra or facilitation centre. Until this verification is completed, the application remains pending. It is best to check the GST portal while applying to see whether your state falls under this requirement.

3. Strict Physical Verification of Business Premises

As per CBIC Instruction No. 03/2025-GST dated 17 April 2025, officers have been directed to carry out physical verification of the principal place of business in high-risk cases. If your application is selected for such verification, the processing time may increase by 5 to 15 working days. Make sure your address proof is up to date and that the premises are accessible during working hours.

Benefits of GST Registration

GST registration offers several practical benefits to a business:

  • It gives your business legal recognition under the GST system.
  • It allows you to collect GST from customers and issue proper tax invoices .
  • It helps you claim Input Tax Credit on eligible purchases, which can reduce your tax cost.
  • It improves credibility with customers and B2B buyers who prefer or require GST invoices.
  • It is necessary for interstate trade and for selling through many e-commerce platforms.
  • It allows input tax to be adjusted against output tax liability.
  • It brings your business under a single indirect tax system, which makes compliance more organised.
  • It is often required for government tenders, public contracts, and vendor registration with large companies.

Documents Required for GST Registration

For Sole Proprietors / Individuals

  • PAN card of the owner
  • Aadhaar card of the owner
  • Photograph of the owner
  • Proof of principal place of business, such as electricity bill, rent agreement with NOC, or property tax receipt
  • Bank account details, such as a cancelled cheque or bank statement

For Partnerships and LLPs

  • Partnership deed or LLP registration certificate
  • PAN cards of all partners
  • Aadhaar card of the authorised signatory
  • Proof of appointment of the authorised signatory
  • Bank details
  • Principal place of business address proof

For Hindu Undivided Families (HUFs)

  • PAN card of the HUF
  • PAN card of the Karta
  • Photograph of the Karta
  • Bank details
  • Principal place of business address proof

For Private or Public Companies

  • Company PAN card
  • Certificate of Incorporation issued by the Ministry of Corporate Affairs
  • Memorandum of Association (MoA) and Articles of Association (AoA)
  • Board resolution or proof of appointment of the authorised signatory
  • PAN cards of all directors
  • Bank details and proof of principal place of business

For Societies, Trusts, and Clubs

  • Registration certificate of the society or trust
  • PAN card of the organisation and of partners or promoters, wherever applicable
  • Photographs of partners or promoters
  • Copy of bank statement or passbook
  • Proof of registered office address, such as a utility bill, along with rent agreement or NOC if the premises are rented
  • Letter of authorisation for the authorised signatory

GST Registration Threshold Limits

Mandatory Registration Thresholds

Category Goods Services
General states ₹40 lakh ₹20 lakh
Special Category States**
( Group B) ₹20 lakh ₹10 lakh

*Special Category Group A: Arunachal Pradesh, Meghalaya, Sikkim, and Uttarakhand. The Union Territory of Puducherry also follows these limits.

**Special Category Group: Manipur, Mizoram, Nagaland, and Tripura.

Category General states
Goods ₹40 lakh
Services ₹20 lakh
Category Special Category States**
Category ( Group B)
Goods ₹20 lakh
Services ₹10 lakh

Registration Requirements by Business Type

Business Type Annual Turnover Registration Requirement
Supply of goods - general states As applicable under current law and notifications May be mandatory based on threshold and conditions
Supply of services - general states ₹20 lakh+ Mandatory
Supply of goods - special category states As applicable under current law and notifications May be mandatory based on threshold and conditions
Supply of services - special category states ₹10 lakh+ Mandatory
Interstate supply of goods or services Subject to applicable provisions, exemptions, and notifications May be mandatory in specified cases
E-commerce sellers of goods or services Subject to applicable legal provisions Mandatory in applicable cases
Casual taxable person No limit Mandatory
Non-resident taxable person No limit Mandatory
Businesses liable under Reverse Charge Mechanism Subject to applicable legal provisions Registration requirement depends on the nature of liability and current law
Business Type Supply of goods - general states
Annual Turnover As applicable under current law and notifications
Registration Requirement May be mandatory based on threshold and conditions
Business Type Supply of services - general states
Annual Turnover ₹20 lakh+
Registration Requirement Mandatory
Business Type Supply of goods - special category states
Annual Turnover As applicable under current law and notifications
Registration Requirement May be mandatory based on threshold and conditions
Business Type Supply of services - special category states
Annual Turnover ₹10 lakh+
Registration Requirement Mandatory
Business Type Interstate supply of goods or services
Annual Turnover Subject to applicable provisions, exemptions, and notifications
Registration Requirement May be mandatory in specified cases
Business Type E-commerce sellers of goods or services
Annual Turnover Subject to applicable legal provisions
Registration Requirement Mandatory in applicable cases
Business Type Casual taxable person
Annual Turnover No limit
Registration Requirement Mandatory
Business Type Non-resident taxable person
Annual Turnover No limit
Registration Requirement Mandatory
Business Type Businesses liable under Reverse Charge Mechanism
Annual Turnover Subject to applicable legal provisions
Registration Requirement Registration requirement depends on the nature of liability and current law

Step-by-Step GST Registration Process

GST registration is completed in two stages. In Part A, you generate a Temporary Reference Number or TRN. In Part B, you use that TRN to complete and submit the full application.

Part A: Generate Your Temporary Reference Number (TRN)

Step 1: Visit the GST portal at gst.gov.in and go to Services > Registration > New Registration.

New Registration

Step 2: Select Taxpayer as the registration type. Then choose your state and district, enter the legal name of the business, PAN, email address, and mobile number, and click Proceed.

New Registration Step 2

Step 3: You will receive two OTPs, one on your mobile number and one on your email address. Enter both OTPs for verification. If needed, you can click Resend OTP.

Step 4: Once verification is completed, the portal generates a Temporary Reference Number. This TRN is sent to your mobile number and email address. You must use it to complete Part B within 15 days, otherwise it expires.

Part B: Complete Your Full Application

Step 5: Return to gst.gov.in. Under New Registration, select Temporary Reference Number (TRN), enter the TRN and captcha code, then click Proceed.

Step 6: Enter the OTP sent to your mobile number or email address and click Proceed.

Step 7: Your saved Part A application will appear with the status "Draft". Click the Edit icon to continue with Part B.

Step 8 - Business Details: Enter your trade name, business constitution such as proprietorship, partnership, LLP, or company, and district. Choose whether you want to opt for the Composition Scheme. Then select the registered person type and enter the date of liability and date of commencement of business.

Step 9 - Promoters / Partners: Add the details of up to 10 promoters, partners, or directors. This includes name, date of birth, gender, mobile number, email address, Aadhaar number, PAN, and photograph in JPEG or PDF format up to 1 MB. For companies, add designation and Director Identification Number (DIN) where applicable. Also mention whether any promoter is the primary authorised signatory.

Step 10 - Authorised Signatory: Fill in the details of the primary authorised signatory. If the signatory is a GST practitioner, mention the enrolment ID. If a separate authorised representative has been appointed, enter the required details accordingly.

Step 11 - Principal Place of Business: Enter the full address of the main business location, including district, sector, ward, and range details wherever required. Also mention whether the premises are owned, rented, leased, or occupied with consent. Upload supporting documents such as electricity bill, rent agreement with NOC, or property tax document.

Step 12 - Additional Places of Business: If the business operates from more than one place, add each additional location here with the same kind of details required for the principal place of business.

Step 13 - Goods and Services: Mention up to 5 main goods or services supplied by the business, along with the relevant HSN codes for goods or SAC codes for services.

Step 14 - Bank Account Details: You can enter details of up to 10 bank accounts. Although giving bank details at the time of registration has been optional since 27 December 2018, the GSTN Advisory dated 20 November 2025 requires new taxpayers to link a valid bank account within 30 days of GSTIN issuance or before filing the first GSTR-1. If this is not done, the registration may be suspended.

Step 15 - State-Specific Information: Fill in state-specific details such as professional tax employee code number, PT registration certificate number, state excise licence number, and the licence holder's name, wherever these apply.

Step 16 - Aadhaar Authentication: Choose Aadhaar OTP authentication if available. It is generally the faster option. In some notified states, biometric authentication at a GST Suvidha Kendra may be required instead.

Step 17 - Verification and Submission: Go to the Verification page, tick the declaration box, and submit the application using one of the following methods:

  • DSC (Digital Signature Certificate), which is mandatory for companies and LLPs
  • e-Sign, where OTP is sent to the Aadhaar-linked mobile number
  • EVC, where OTP is sent to the registered mobile number

Step 18: After successful submission, the portal shows a confirmation message and sends the Application Reference Number (ARN) to your registered email address and mobile number.

OTP Verification

How to Track Your GST Registration Application Status (ARN)

After submission, you can track the status of your application by using the ARN. In most cases, you do not need to log in for this.

Three Steps to Track Your Application

  1. Visit gst.gov.in  
  2. Go to Services > Registration > Track Application Status
  3. Enter your ARN and click Search

Application Statuses and What They Mean

Status Meaning Next Action
Pending for Processing Application has been submitted but not yet assigned to an officer Wait, usually 1 to 3 working days
Pending for Clarification Officer has raised a query on the application Reply through the portal within 7 working days
Pending for Order Officer is reviewing the application Wait, usually 2 to 5 working days
Approved GSTIN has been issued Download the certificate from Services > User Services > View/Download Certificates
Rejected Application has been rejected Check the reason and apply again with corrected details

In normal cases, the application is usually processed within 3 to 7 working days if Aadhaar OTP verification is completed and no physical verification is triggered. Where physical verification is required under CBIC Instruction 01/2025-GST, approval may take up to 30 working days.

Status Pending for Processing
Meaning Application has been submitted but not yet assigned to an officer
Next Action Wait, usually 1 to 3 working days
Status Pending for Clarification
Meaning Officer has raised a query on the application
Next Action Reply through the portal within 7 working days
Status Pending for Order
Meaning Officer is reviewing the application
Next Action Wait, usually 2 to 5 working days
Status Approved
Meaning GSTIN has been issued
Next Action Download the certificate from Services > User Services > View/Download Certificates
Status Rejected
Meaning Application has been rejected
Next Action Check the reason and apply again with corrected details
Navigation - New registration
Navigation - New registration
Navigation - New registration
Navigation - New registration

GST Registration Eligibility Criteria

The following persons and entities are required to register under GST, irrespective of turnover:

  • Sole proprietors, partnerships, LLPs, and companies making taxable supplies above the threshold
  • Businesses engaged in the interstate supply of goods or services
  • E-commerce operators and sellers operating through e-commerce platforms
  • Businesses liable to pay tax under Reverse Charge Mechanism
  • Casual taxable persons and non-resident taxable persons
  • Agents of registered suppliers
  • Persons required to deduct TDS under GST, such as government departments and PSUs
  • Persons required to collect TCS, such as e-commerce operators

Before starting the application, keep all basic documents ready, especially PAN, Aadhaar, and proof of business address.

Types of GST Registration in India - All 9 Types

India's GST system recognises 9 common types of registration. Each one is meant for a different type of taxpayer. Selecting the correct category at the beginning is important because changing it later usually means filing a fresh application.

No. Registration Type Who It Is For Threshold Validity Key Feature
1 Regular / Normal Businesses supplying taxable goods or services above the threshold ₹40 lakh for goods / ₹20 lakh for services Ongoing Standard GSTR-1 and GSTR-3B monthly or quarterly filing
2 Composition Scheme Small businesses looking for simpler compliance Up to ₹1.5 crore for goods, ₹50 lakh for services Ongoing Fixed tax rate on turnover, quarterly CMP-08, cannot collect GST from customers, cannot make interstate supplies
3 Casual Taxable Person Businesses supplying in a state where they do not have a fixed place of business, such as trade fairs, exhibitions, or pop-up stores No threshold 90 days, extendable once Advance GST deposit based on estimated liability is required and application must be made at least 5 days before starting business
4 Non-Resident Taxable Person Foreign businesses supplying taxable goods or services in India without a fixed establishment No threshold 90 days, extendable Must appoint an authorised Indian representative and deposit advance tax
5 Input Service Distributor (ISD) Head office receiving service invoices and distributing ITC to branches No threshold Ongoing Distributes IGST, CGST, and SGST credit to branches through ISD invoices and needs a separate GSTIN
6 Unique Identification Number (UIN) Foreign diplomatic missions, UN bodies, and notified agencies No threshold Ongoing Used only for claiming GST refund on purchases, not for commercial activity
7 E-Commerce Operators Platforms facilitating supply by other sellers, such as Amazon, Flipkart, Swiggy, and Zomato No threshold Ongoing Must collect TCS at 1% of net taxable value and file GSTR-8 monthly
8 TDS Deductors Government departments, PSUs, local authorities, and notified government entities making payments above ₹2.5 lakh No threshold Ongoing Must deduct 2% TDS and file GSTR-7 monthly
9 OIDAR Services Providers Foreign businesses providing digital services to Indian consumers, such as streaming services, cloud software, online databases, and e-learning platforms No threshold Ongoing Must register in India or appoint a representative, pay IGST on B2C digital supplies, and file GSTR-5A
No. 1
Registration Type Regular / Normal
Who It Is For Businesses supplying taxable goods or services above the threshold
Threshold ₹40 lakh for goods / ₹20 lakh for services
Validity Ongoing
Key Feature Standard GSTR-1 and GSTR-3B monthly or quarterly filing
No. 2
Registration Type Composition Scheme
Who It Is For Small businesses looking for simpler compliance
Threshold Up to ₹1.5 crore for goods, ₹50 lakh for services
Validity Ongoing
Key Feature Fixed tax rate on turnover, quarterly CMP-08, cannot collect GST from customers, cannot make interstate supplies
No. 3
Registration Type Casual Taxable Person
Who It Is For Businesses supplying in a state where they do not have a fixed place of business, such as trade fairs, exhibitions, or pop-up stores
Threshold No threshold
Validity 90 days, extendable once
Key Feature Advance GST deposit based on estimated liability is required and application must be made at least 5 days before starting business
No. 4
Registration Type Non-Resident Taxable Person
Who It Is For Foreign businesses supplying taxable goods or services in India without a fixed establishment
Threshold No threshold
Validity 90 days, extendable
Key Feature Must appoint an authorised Indian representative and deposit advance tax
No. 5
Registration Type Input Service Distributor (ISD)
Who It Is For Head office receiving service invoices and distributing ITC to branches
Threshold No threshold
Validity Ongoing
Key Feature Distributes IGST, CGST, and SGST credit to branches through ISD invoices and needs a separate GSTIN
No. 6
Registration Type Unique Identification Number (UIN)
Who It Is For Foreign diplomatic missions, UN bodies, and notified agencies
Threshold No threshold
Validity Ongoing
Key Feature Used only for claiming GST refund on purchases, not for commercial activity
No. 7
Registration Type E-Commerce Operators
Who It Is For Platforms facilitating supply by other sellers, such as Amazon, Flipkart, Swiggy, and Zomato
Threshold No threshold
Validity Ongoing
Key Feature Must collect TCS at 1% of net taxable value and file GSTR-8 monthly
No. 8
Registration Type TDS Deductors
Who It Is For Government departments, PSUs, local authorities, and notified government entities making payments above ₹2.5 lakh
Threshold No threshold
Validity Ongoing
Key Feature Must deduct 2% TDS and file GSTR-7 monthly
No. 9
Registration Type OIDAR Services Providers
Who It Is For Foreign businesses providing digital services to Indian consumers, such as streaming services, cloud software, online databases, and e-learning platforms
Threshold No threshold
Validity Ongoing
Key Feature Must register in India or appoint a representative, pay IGST on B2C digital supplies, and file GSTR-5A

What is a GSTIN? - Understanding Your 15-Digit GST Number

GSTIN stands for Goods and Services Tax Identification Number. It is a unique 15-digit alphanumeric number given to every GST-registered business. Once your registration is approved, this becomes the official GST identity of your business.

It must be mentioned on tax invoices and is used across GST compliance, return filing, and verification.

Meaning of Each Part of the GSTIN

Position No. of Digits What It Represents Example
1 to 2 2 State code, such as 27 for Maharashtra, 29 for Karnataka, 07 for Delhi, and 09 for Uttar Pradesh 27
3 to 12 10 PAN of the taxpayer, whether individual, firm, company, or HUF ABCDE1234F
13 1 Entity number showing the number of registrations held in that state 1
14 1 Fixed value "Z" Z
15 1 Auto-generated check digit for validation 6

Example: 27ABCDE1234F1Z6 = Maharashtra (27) + PAN ABCDE1234F + first entity in the state (1) + Z + check digit (6)

Key GSTIN Rules

  • A business operating in multiple states gets a separate GSTIN in each state, even if the PAN is the same.
  • The GSTIN must be printed on every GST invoice issued to customers.
  • The GSTIN must be displayed at the principal place of business and every additional place of business.
  • Any supplier's GSTIN can be verified free of cost on gst.gov.in through Search Taxpayer > Search by GSTIN/UIN.
Position 1 to 2
No. of Digits 2
What It Represents State code, such as 27 for Maharashtra, 29 for Karnataka, 07 for Delhi, and 09 for Uttar Pradesh
Example 27
Position 3 to 12
No. of Digits 10
What It Represents PAN of the taxpayer, whether individual, firm, company, or HUF
Example ABCDE1234F
Position 13
No. of Digits 1
What It Represents Entity number showing the number of registrations held in that state
Example 1
Position 14
No. of Digits 1
What It Represents Fixed value "Z"
Example Z
Position 15
No. of Digits 1
What It Represents Auto-generated check digit for validation
Example 6

GST Registration Fees

Government Fees

GST registration on the official GST portal is free. There is no government fee for obtaining a GSTIN, irrespective of the type of business.

Professional Service Fees (Estimated)

Business Type Estimated Professional Fees
Sole Proprietorship ₹1,000 to ₹3,000
Partnership Firm / LLP ₹2,000 to ₹5,000
Private Limited Company ₹5,000 to ₹10,000
E-commerce Sellers ₹3,000 to ₹7,000
Casual Taxable Person ₹3,000 to ₹6,000
Non-Resident Taxable Person ₹5,000 to ₹15,000

Additional Costs

  • Digital Signature Certificate (DSC): ₹500 to ₹2,000, mandatory for companies and LLPs
  • PAN application fee: around ₹100, if PAN has not already been obtained
Business Type Sole Proprietorship
Estimated Professional Fees ₹1,000 to ₹3,000
Business Type Partnership Firm / LLP
Estimated Professional Fees ₹2,000 to ₹5,000
Business Type Private Limited Company
Estimated Professional Fees ₹5,000 to ₹10,000
Business Type E-commerce Sellers
Estimated Professional Fees ₹3,000 to ₹7,000
Business Type Casual Taxable Person
Estimated Professional Fees ₹3,000 to ₹6,000
Business Type Non-Resident Taxable Person
Estimated Professional Fees ₹5,000 to ₹15,000

Penalties for Not Registering

Violation Penalty
Late registration where non-registration is not deliberate 10% of tax due or ₹10,000, whichever is higher
Intentional tax evasion through non-registration 100% of the tax due

Interest at 18% per annum is also charged on the unpaid tax liability for the period of non-registration.

Violation Late registration where non-registration is not deliberate
Penalty 10% of tax due or ₹10,000, whichever is higher
Violation Intentional tax evasion through non-registration
Penalty 100% of the tax due

GST Registration Certificate

Once the application is approved, the GST portal issues the GST Registration Certificate in Form GST REG-06. The certificate includes:

  • GSTIN
  • Legal name of the business
  • Type of business and address
  • Date of registration
  • Additional places of business, if any

You can download it by going to Login > Services > User Services > View/Download Certificates.

The certificate should be displayed clearly at the principal place of business as well as every additional place of business. It remains valid unless the registration is cancelled or surrendered.

Navigation - New registration

Steps to Take After GST Registration

Once the GSTIN is issued, a few immediate compliance steps become important:

  • Display the registration certificate and GSTIN at your business premises.
  • Determine the place of supply for each transaction so you know whether CGST and SGST or IGST applies .
  • Issue GST-compliant invoices for taxable sales, including your GSTIN, the customer's GSTIN in B2B cases, HSN or SAC codes, and the applicable tax rate.
  • Charge and collect GST on taxable outward supplies.
  • File Form ITC-01 to claim ITC on goods held in stock on the date of registration.
  • Claim Input Tax Credit on eligible purchase invoices as reflected in GSTR-2B .
  • Link the bank account to the GST portal within 30 days of GSTIN issuance, as required under the November 2025 GSTN advisory.
  • Maintain records prescribed under Rule 56 of the CGST Rules, including purchase register, sales register, stock register, and ITC records.
  • File GST returns on time, including GSTR-1, GSTR-3B , and GSTR-9. Composition taxpayers file CMP-08 quarterly.
  • Review whether Reverse Charge Mechanism applies to any of your transactions.

Managing all these post-registration tasks manually increases the risk of missed deadlines and filing errors. GST accounting software like BUSY handles invoicing, GSTR-2B reconciliation, return preparation, and deadline alerts from one place.

Navigation - New registration

Voluntary GST Registration: Should You Register Before the Threshold?

Under Section 25(3) of the CGST Act, 2017, a business below the compulsory registration threshold may still choose to register voluntarily.

Who Should Consider Voluntary Registration?

Business Type Why Voluntary Registration May Help
Freelancers and consultants supplying to GST-registered clients Many B2B clients prefer GST invoices for ITC and may avoid unregistered vendors
Startups expecting rapid growth Early registration can help avoid last-minute compliance issues after crossing the threshold
Exporters Registration is required for claiming ITC refunds under LUT or Bond route
E-commerce sellers Many marketplaces ask for GSTIN during seller onboarding
Businesses purchasing heavily from GST-registered suppliers ITC on purchases can lower the effective cost of inputs

Commitment After Voluntary Registration

A business that takes voluntary registration has to follow the same GST rules as a business that registers compulsorily. That means return filing, invoice compliance, and record keeping all become mandatory. To exit the system, a formal cancellation application in Form GST REG-16 is required.

Business Type Freelancers and consultants supplying to GST-registered clients
Why Voluntary Registration May Help Many B2B clients prefer GST invoices for ITC and may avoid unregistered vendors
Business Type Startups expecting rapid growth
Why Voluntary Registration May Help Early registration can help avoid last-minute compliance issues after crossing the threshold
Business Type Exporters
Why Voluntary Registration May Help Registration is required for claiming ITC refunds under LUT or Bond route
Business Type E-commerce sellers
Why Voluntary Registration May Help Many marketplaces ask for GSTIN during seller onboarding
Business Type Businesses purchasing heavily from GST-registered suppliers
Why Voluntary Registration May Help ITC on purchases can lower the effective cost of inputs

How to Amend Your GST Registration

Business details do not always remain the same. You may shift your office, update bank details, add a director, or change partner information. GST allows such updates through Form GST REG-14. The process depends on whether the field being changed is a core field or a non-core field.

Core Fields vs Non-Core Fields

Category Fields Covered Process Timeline
Core Fields Legal name of business, principal place of business address within the same state, addition or deletion of partners, directors, or promoters File REG-14, officer review required, approval needed Must be filed within 15 days of the change. Officer may approve or raise a query within 15 working days
Non-Core Fields Bank account details, contact details, additional places of business, list of goods or services supplied File REG-14 and submit online Takes effect immediately after submission

If the business shifts to another state, that is not treated as a simple amendment. In that case, the existing registration has to be cancelled and a fresh registration must be taken in the new state.

How to Amend GST Registration - Step by Step

  1. Log in to gst.gov.in using your GSTIN credentials.
  2. Go to Services > Registration > Amendment of Registration and choose Core Fields or Non-Core Fields, depending on the nature of the change.
  3. Select the relevant tab, such as Business Details, Promoters / Partners, or Principal Place of Business.
  4. Make the changes and upload the necessary supporting documents, such as revised address proof or updated partnership deed.
  5. For non-core amendments, submit through EVC or DSC. The changes become effective immediately.
  6. For core amendments, submit the application and wait for officer review. The officer may approve it, ask for clarification, or reject it within 15 working days.
Category Core Fields
Fields Covered Legal name of business, principal place of business address within the same state, addition or deletion of partners, directors, or promoters
Process File REG-14, officer review required, approval needed
Timeline Must be filed within 15 days of the change. Officer may approve or raise a query within 15 working days
Category Non-Core Fields
Fields Covered Bank account details, contact details, additional places of business, list of goods or services supplied
Process File REG-14 and submit online
Timeline Takes effect immediately after submission

GST Registration Cancellation and Revocation

GST registration can be cancelled either by the registered taxpayer or by the department in case of non-compliance.

When Can GST Registration Be Cancelled?

Voluntary cancellation may be relevant in the following situations:

  • The business has been closed permanently or wound up
  • The business has been transferred, merged, or amalgamated
  • The annual turnover has fallen below the threshold and is expected to stay below it
  • The business had taken voluntary registration but no longer wants to stay registered
  • The business constitution has changed and fresh registration is required, such as conversion from proprietorship to partnership

How to Cancel GST Registration - Step by Step

  1. Log in to the GST portal and go to Services > Registration > Application for Cancellation of Registration.
  2. Fill Form GST REG-16 by selecting the reason for cancellation, entering the effective date, and declaring the value of inputs, semi-finished goods, and finished goods in stock on that date.
  3. Reverse and pay back ITC claimed on closing stock, wherever applicable.
  4. Clear all outstanding GST liabilities, including tax, interest, and penalty.
  5. Submit the application using DSC or EVC. The proper officer may issue the cancellation order in Form GST REG-19 within 30 days.

Suo Motu Cancellation by the Proper Officer

The proper officer may cancel a GST registration on their own in the following situations:

Trigger Legal Basis
Non-filing of returns for 6 consecutive months by a normal taxpayer Section 29(2)(c) of the CGST Act
Non-filing of returns for 3 consecutive tax periods by a composition taxpayer Section 29(2)(c) of the CGST Act
Business not commenced within 6 months of GSTIN issuance Section 29(2)(d) of the CGST Act
Registration obtained by fraud, misrepresentation, or suppression of facts Section 29(2)(e) of the CGST Act

GST Registration Suspension

When a show-cause notice for cancellation is issued, the GST registration is automatically suspended from the date of notice under Rule 21A of the CGST Rules. Suspension may also happen if a newly registered business does not link its bank account within 30 days, as required by the November 2025 GSTN advisory.

During the suspension period:

  • The business cannot make taxable supplies or issue GST-compliant invoices.
  • The business must continue filing GSTR-3B, including nil returns where applicable.
  • The business cannot collect GST from customers.

Suspension is lifted once the issue is resolved, such as by filing pending returns, linking the bank account, or replying satisfactorily to the notice.

Revocation of Cancellation

If the proper officer has cancelled the registration, the taxpayer may apply for revocation by filing Form GST REG-21 within 30 days of the cancellation order.

Conditions for Revocation

  • All pending GST returns must be filed.
  • All outstanding tax, interest, and penalty must be paid.
  • The proper officer may pass a revocation order or reject the application within 30 working days.

Once revocation is approved, the GSTIN becomes active again and the business can start issuing invoices, collecting GST, and filing returns.

Trigger Non-filing of returns for 6 consecutive months by a normal taxpayer
Legal Basis Section 29(2)(c) of the CGST Act
Trigger Non-filing of returns for 3 consecutive tax periods by a composition taxpayer
Legal Basis Section 29(2)(c) of the CGST Act
Trigger Business not commenced within 6 months of GSTIN issuance
Legal Basis Section 29(2)(d) of the CGST Act
Trigger Registration obtained by fraud, misrepresentation, or suppression of facts
Legal Basis Section 29(2)(e) of the CGST Act

Common Mistakes to Avoid During GST Registration

  • Using incorrect PAN details. The PAN should exactly match the legal name and type of entity.
  • Selecting the wrong business constitution. Proprietorship, partnership, LLP, and company all carry different compliance consequences.
  • Entering the wrong state or jurisdiction. This affects return filing, officer assignment, and the tax type applicable.
  • Uploading unclear or invalid documents. Address proof, identity proof, and authorisation documents should be legible and current.
  • Entering the wrong mobile number or email address. These are used for OTP verification and future communication from GSTN.
  • Delaying registration after crossing the threshold. Late registration may attract a penalty of 10% of tax due, subject to a minimum of ₹10,000.
  • Not linking the bank account within the required timeline. This may lead to automatic suspension under the November 2025 advisory.

Issuing invoices without mandatory fields after registration. A new GSTIN means every invoice must carry the correct format, HSN/SAC code, and tax breakup from day one. GST billing software enforces this automatically and keeps your invoices audit-ready.

Conclusion

GST registration is not just a legal formality. For most businesses, it is the starting point of regular tax compliance under GST. If your turnover crosses the threshold, or your business falls into a category where registration is compulsory, you need to register on time and follow the rules that come after registration.

The application process on the GST portal is free, but accuracy matters. Wrong details, poor document uploads, or missed post-registration steps can delay approval or create compliance trouble later.

Many businesses use accounting software to make GST work easier after registration. BUSY Accounting Software, for example, can help with invoicing, GSTR-2B reconciliation, return preparation, deadline tracking, and day-to-day GST management with less manual effort.

Frequently Asked Questions

What are the benefits of registering for GST in India?

GST registration allows businesses to claim Input Tax Credit on eligible purchases, which helps reduce the actual tax burden. It also gives legal authority to collect GST, supports interstate trade and online selling, and helps businesses qualify as GST-compliant vendors for B2B deals, tenders, and corporate empanelment.

Is GST registration mandatory for all businesses?

No. GST registration is mandatory only when turnover crosses the prescribed threshold, or when the business falls into a category where compulsory registration applies. Examples include interstate suppliers, e-commerce sellers, casual taxable persons, non-resident taxable persons, and TDS deductors.

What are the turnover limits for mandatory GST registration?

For goods, the threshold is ₹40 lakh in general states and ₹20 lakh in special category states. For services, it is ₹20 lakh in general states and ₹10 lakh in special category states. Some businesses must register regardless of turnover.

How long does GST registration take?

Where Aadhaar OTP authentication is completed and no extra verification is triggered, approval usually comes within 3 to 7 working days. If the application is selected for physical verification under CBIC Instruction 01/2025-GST, it may take up to 30 working days. In notified states, biometric Aadhaar verification may also delay approval until the process is completed.

What is a GSTIN and what do the 15 digits mean?

GSTIN is the Goods and Services Tax Identification Number issued after GST registration. It is a 15-digit number. The first 2 digits are the state code, the next 10 digits are the PAN, the 13th digit shows the entity number, the 14th digit is Z, and the 15th digit is the check digit.

Can I register for GST voluntarily if my turnover is below the threshold?

Yes. A business below the threshold may still register voluntarily under Section 25(3) of the CGST Act. This can be useful for claiming ITC, meeting client requirements, and selling through online marketplaces. But once registered, the business must comply with GST rules like any other registered taxpayer.

How do I check my GST registration application status?

Go to gst.gov.in and open Services > Registration > Track Application Status. Then enter the ARN received after submission. The portal will show the current status of the application.

Can I have multiple GSTINs for the same business?

Yes. A business operating in multiple states needs a separate GSTIN for each state where it has taxable presence. In some cases, a business may also have separate GSTINs within the same state using the same PAN, subject to the applicable legal conditions.

What is a Casual Taxable Person under GST?

A Casual Taxable Person is someone who occasionally supplies goods or services in a state where there is no fixed place of business, such as during an exhibition or trade fair. This registration is valid for 90 days and may be extended. Advance tax deposit is required based on estimated liability.

What happens if I do not register for GST when required?

If registration was mandatory and the business failed to register, a penalty of 10% of tax due may apply, subject to a minimum of ₹10,000. If the case involves intentional tax evasion, the penalty may go up to 100% of the tax due. Interest at 18% per annum is also charged on unpaid tax.

Do I need to link my bank account to my GST registration?

Yes. As per the GSTN Advisory dated 20 November 2025, newly registered businesses must link valid bank account details on the portal within 30 days of GSTIN issuance or before filing the first GSTR-1 or IFF, whichever is earlier. Otherwise, the registration is suspended automatically.


Is Aadhaar authentication mandatory for GST registration?

For most applicants, Aadhaar authentication is part of the registration process. OTP-based authentication is the common route and usually helps speed up approval. In notified states, biometric Aadhaar authentication at a GST Suvidha Kendra may also be required.

What is the difference between core and non-core GST registration fields?

Core fields are more sensitive details, such as legal name, principal place of business, and partner or director details. These need officer approval. Non-core fields, such as bank details, contact details, and additional places of business, usually take effect immediately after submission.

How do I cancel my GST registration voluntarily?

Log in to gst.gov.in and go to Services > Registration > Application for Cancellation of Registration. Fill Form GST REG-16, mention the reason and effective date, declare stock and ITC reversal details, clear pending liabilities, and submit through DSC or EVC.

What is GST registration suspension and when does it happen?

Suspension usually happens when the department issues a show-cause notice for cancellation under Rule 21A of the CGST Rules, or when a new taxpayer fails to link bank account details within the required time. During suspension, the business cannot issue GST invoices or make taxable supplies, though return filing may still continue.