š” Key Takeaways
- Applying for GST requires filing Form REG-01 in two distinct parts on the official portal.
- Part A generates a Temporary Reference Number (TRN) valid for 15 days using PAN and mobile verification.
- Part B collects business address details, promoter information, bank proofs, and jurisdiction selections.
- Completing Aadhaar authentication grants approval in 7 working days without physical office inspection.
- Track application progress using the Application Reference Number (ARN) issued upon final submission.
Starting a new gst application can feel overwhelming when facing technical tax jargon and complex portal forms. However, learning how to apply for gst online is straightforward once you understand the exact step-by-step workflow. Whether running a proprietorship or launching a startup, securing a 15-digit GSTIN is mandatory to issue tax invoices and claim input credits lawfully.
The entire application takes place digitally on the official government website. No physical paperwork visits are required. You submit Form REG-01, verify your details through mobile and email OTPs, upload supporting premises documents, and complete online Aadhaar authentication.
This guide walks you through the exact 2026 process of applying for GST registration, preparing documents, completing Part A and Part B of Form REG-01, and tracking your ARN status without delays.
How to Apply for GST Registration Online
To apply for GST registration online in India, visit the official GST portal at gst.gov.in and navigate to Services > Registration > New Registration. Complete Part A of Form REG-01 by entering your business PAN, email, and mobile number to generate a Temporary Reference Number (TRN). Log in using your TRN, fill out Part B with business details, upload address proof, complete Aadhaar authentication, and submit via EVC or Digital Signature (DSC) to receive your Application Reference Number (ARN).
Documents Required Before Starting Application
Gathering verified documents before opening the portal prevents session timeouts and reduces application rejections. The required papers depend on your legal entity structure.
Proprietorships and Individuals
For sole proprietors, the document requirements are minimal. You need the owner’s PAN card, Aadhaar card, passport-size photograph, and personal bank account details (or canceled cheque). Additionally, you must provide address proof for the principal place of business, such as an electricity bill accompanied by a consent letter or rent agreement.
Companies and Partnerships
Corporate entities require official registration proofs. A private limited company must supply its Certificate of Incorporation, Memorandum of Association (MOA), Board Resolution appointing the authorized signatory, and company PAN. Partnerships require a registered Partnership Deed. If you are forming a new business structure, complete your Company Registration before initiating GST filing.
Form REG-01 Walkthrough: Part A (Generating TRN)
Form REG-01 is divided into two sections. Part A initiates your profile on the portal and creates a temporary identification key.
Step 1: Portal Access and Initial Selection
Open the official GST Portal India. Click on ‘Services’, hover over ‘Registration’, and select ‘New Registration’. On the registration page, select the radio button labeled ‘New Registration’. From the dropdown menu, select ‘Taxpayer’ under the ‘I am a’ field. Choose your state and district accurately, as this determines your operational tax jurisdiction.
Step 2: Entering Personal Details and OTP Verification
Enter the legal name of the business exactly as printed on the business PAN card. Input the permanent account number in the PAN field. Provide a valid email address and primary mobile number. Upon clicking ‘Proceed’, two separate One Time Passwords (OTPs) will be sent to your mobile and email. Enter both OTPs to verify ownership. The portal immediately displays a 15-digit temporary reference number trn on screen and emails it to you.
Form REG-01 Walkthrough: Part B (Completing Details)
Your TRN remains active for 15 days. You must log back in to finish Part B before this window expires.
Business Profile and Promoter Details
Navigate back to ‘Services’ > ‘Registration’ > ‘New Registration’, select ‘Temporary Reference Number (TRN)’, enter your 15-digit number, and complete CAPTCHA verification. Once inside your dashboard, click the edit icon under the ‘Action’ column to open Part B. Complete the ‘Business Details’ tab by entering your Trade Name and selecting your business constitution (e.g., Proprietorship, Private Limited). Indicate whether you wish to opt into the Composition Scheme.
Jurisdiction and Address Proof Upload
Fill in the ‘Promoters/Partners’ tab with personal background information and upload photos. Next, navigate to the ‘Principal Place of Business’ tab. Enter the precise address and select your Ward, Circle, and Sector jurisdiction. Select the nature of possession of premises (Owned, Rented, Shared, or Consent). Upload an official proof document, such as an electricity bill alongside a notarized rent agreement or NOC from the property owner.
| Registration Phase | Key Output / Identifier | Primary Purpose | Validity Period |
|---|---|---|---|
| Part A Submission | Temporary Reference Number (TRN) | Portal access & draft form saving | 15 Days |
| Part B Submission | Application Reference Number (ARN) | Officer review & application tracking | Permanent until processing |
| Final Approval | 15-Digit GSTIN & Certificate (REG-06) | Tax invoicing & ITC claims | Lifetime (until cancelled) |
Aadhaar Authentication and Verification Rules
Aadhaar verification is a critical security feature introduced on the gst portal registration system to curb fraudulent registrations.
During Part B submission, you are prompted to opt for aadhaar authentication gst process for primary promoters and authorized signatories. If you opt ‘Yes’, an automated link is sent to the Aadhaar-linked mobile numbers. Clicking the link and entering the OTP completes physical verification requirements electronically. Applications with successful Aadhaar authentication are usually approved within 7 working days.
If you opt ‘No’ or fail the electronic authentication, the application triggers a mandatory physical verification of your business premises by a tax inspector. In such cases, approval can take 30 days or longer. Ensuring your mobile number is updated in your Aadhaar record before applying avoids unnecessary delays.
Tracking ARN Status and Resolving Clarifications
After completing Part B and submitting the form using Electronic Verification Code (EVC) or Digital Signature Certificate (DSC), the system generates an application reference number arn via email and SMS.
You can monitor your application progress by visiting the portal home page and selecting ‘Services’ > ‘Registration’ > ‘Track Application Status’. Enter your ARN to view live updates. If the tax officer finds any discrepancy in your uploaded address proofs or PAN details, they will issue a gst reg 03 notice seeking clarification within 7 working days.
When a clarification notice is issued, you must submit your response online using Form REG-04 within 7 working days. Failing to reply within the stipulated time leads to automatic rejection of your registration application. Professional assistance from our GST Registration Services ensures your response is formatted correctly to secure immediate approval.
Once approved, your GST Certificate (Form REG-06) becomes available for download directly from your portal dashboard. Make sure to align your annual tax filing strategy by consulting our Income Tax Advisory specialists as your commercial operations scale. Furthermore, newly registered businesses should complete their Udyam registration to leverage government subsidy benefits.
Conclusion
Applying for GST online in 2026 is a structured process involving Form REG-01 Part A and Part B. By ensuring document accuracy, choosing Aadhaar authentication, and carefully entering your tax jurisdiction, you can secure your GSTIN smoothly within a week. Take control of your business compliance today: reach out to Delhi Tax Solutions to have our experienced CA team review and file your GST application accurately.
Frequently Asked Questions (FAQs)
Q: How to apply for GST registration online on the official GST portal?
A: To apply for GST registration online, visit gst.gov.in and click Services > Registration > New Registration. Fill out Part A of Form REG-01 using your business PAN, mobile number, and email address to obtain a Temporary Reference Number (TRN). Log back into the portal using your TRN to complete Part B, upload required address proofs, complete Aadhaar authentication, and submit the application via EVC or DSC.
Q: What is the difference between TRN and ARN in GST registration?
A: A Temporary Reference Number (TRN) is a 15-digit temporary identification generated immediately after completing Part A of Form REG-01. It allows you to log into the portal and complete Part B within 15 days. An Application Reference Number (ARN) is a permanent tracking number generated only after fully submitting Part B with all documents. The ARN is used by tax officers to process your application and by you to track approval status.
Q: How long does it take to get a GST number after submitting Form REG-01?
A: If you successfully complete online Aadhaar authentication during application submission and your documents contain no discrepancies, approval typically takes 7 working days. However, if you opt out of Aadhaar authentication, if physical site verification is ordered, or if the officer issues a Form REG-03 notice seeking document clarifications, processing can take between 30 to 45 days.
Q: Is Aadhaar authentication mandatory for new GST registration in 2026?
A: Aadhaar authentication is not strictly mandatory, but it is highly recommended. Opting for online Aadhaar authentication allows your application to be processed fast-track within 7 working days without a physical site inspection. Choosing not to perform Aadhaar authentication automatically triggers a compulsory physical verification of your business premises by a tax inspector, significantly delaying your GSTIN issuance.
Q: What documents are required for GST registration of a proprietorship business?
A: For a sole proprietorship, you need the proprietor’s PAN card, Aadhaar card, passport-sized photograph, and personal bank details or canceled cheque. For the principal place of business, you must upload a recent utility bill (electricity, landline, or water bill) along with proof of ownership, a registered lease agreement, or a Consent Letter (NOC) signed by the property owner.
This article is for general informational purposes and is not a substitute for personalised professional tax advice. About this article: Researched using official government sources, real-time competitor and search-trend analysis, and Delhi Tax Solutions’ in-house tax advisory team. Last updated September 2026.
