GST Registration: Who Needs It and Documents Required
Category: GST | Published: 30 September 2026 | Last Updated: 30 September 2026
Find out when GST registration becomes compulsory, what the turnover limits are, and which documents you should keep ready before you apply.
GST registration gives your business a GSTIN, lets you collect GST from customers and allows you to claim input tax credit on your purchases. This guide explains who must register, the turnover limits that apply, and the documents you should keep ready so the application goes smoothly.
Who Needs GST Registration?
1. Businesses crossing the turnover limit
Registration becomes compulsory when your aggregate turnover in a financial year crosses the threshold. Aggregate turnover is calculated on your PAN across India and includes taxable, exempt, export and inter-state supplies (GST itself is not included).
Supply of goods: ₹40 lakh in most states; lower limits apply in some states, including certain special category states.
Supply of services: ₹20 lakh in most states (₹10 lakh in special category states).
Limits can differ by state and by the type of supply, so it is worth confirming the limit that applies to your state before deciding.
2. Businesses that must register regardless of turnover
Some businesses must register from the start, even if turnover is small. Common examples include:
Businesses making inter-state taxable supplies of goods
Sellers supplying goods through e-commerce marketplaces (with some exceptions)
Persons liable to pay tax under reverse charge
Casual taxable persons and non-resident taxable persons
Input Service Distributors, and persons required to deduct TDS or collect TCS under GST
3. Voluntary registration
A business below the limit can still register voluntarily. This can help when your customers are registered businesses that want to claim input tax credit, but it also means you must file GST returns regularly, so weigh the compliance effort before choosing it.
Documents Required for GST Registration
The exact list depends on the type of business. In most cases, keep these ready:
PAN of the business (or of the proprietor for a sole proprietorship)
Aadhaar of the proprietor, partners or directors, linked to a working mobile number
Photographs of the proprietor, partners or directors
Proof of business address: electricity bill, property tax receipt or ownership document; if rented, the rent agreement along with a recent utility bill; if the premises belong to a relative, a consent letter / NOC
Bank account proof: cancelled cheque, passbook first page or recent bank statement showing the account holder's name
Constitution proof for firms and companies: partnership deed, LLP agreement or certificate of incorporation
Authorisation letter or board resolution for the authorised signatory
Digital Signature Certificate (DSC) for companies and LLPs
How the Application Works
Fill Part A of Form GST REG-01 on the GST portal with PAN, mobile number and email, and verify with OTPs.
Complete Part B with business details, promoters, place of business, bank account and HSN/SAC codes of your main goods or services.
Complete Aadhaar authentication. In some cases the portal asks for biometric verification at a GST Suvidha Kendra.
Submit with DSC or EVC and note the ARN to track the application.
Since 1 November 2025, Rule 14A offers an optional, system-based registration within three working days (after Aadhaar authentication) for applicants whose monthly output tax on supplies to registered persons is not expected to exceed ₹2.5 lakh. Applications can still be taken up for manual verification, so keep your documents clear and consistent.
Common Reasons for Delays or Rejection
Name or address on documents not matching the application
Unclear or incomplete address proof for rented premises
Wrong HSN/SAC codes or business activity description
Missing replies to officer queries within the time allowed
Frequently Asked Questions
Can I register for GST without a shop or office?
Yes. A home address can be used as the principal place of business if you have valid address proof and, where needed, consent from the owner.
Is GST registration free?
There is no government fee for GST registration on the GST portal. Professional fees apply only if you take help from a consultant.
What happens after registration?
You must issue proper tax invoices and file GST returns on time, even for months with no sales. Read our guide on GSTR-1 vs GSTR-3B to understand the regular returns.
Need help with the application? See our GST Services or contact us for a free consultation.
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Disclaimer: This article is general information based on the rules as on the Last Updated date above. Tax rules, rates and due dates change, so please verify on the official portal or consult us before acting. It is not professional advice for your specific situation.