GST Registration Process in India: Complete Step-by-Step Guide (2026)

Before you can legally collect GST, claim input tax credit, or sell across state lines, you need a GSTIN — and getting one means understanding both when registration is mandatory and how the actual online process works. This guide covers both, using the current 2026 turnover thresholds and rules.

Once you’re registered, the next step is usually setting up your accounting software correctly — see our guide on how to create a GST invoice in Tally Prime for that part.

When Is GST Registration Mandatory?

Turnover-based thresholds (most common businesses):

• Goods suppliers in most states: registration required once aggregate turnover crosses ₹40 lakh in a financial year
• Goods suppliers in special category states: threshold is ₹20 lakh
• Service providers and mixed suppliers in most states: threshold is ₹20 lakh
• Service providers in a few special category states (including Manipur, Mizoram, Nagaland, and Tripura): threshold is ₹10 lakh

Special category states with lower thresholds generally include states like Arunachal Pradesh, Manipur, Meghalaya, Mizoram, Nagaland, Sikkim, Tripura, and a few others in the northeast and hill regions — check the current notified list for your specific state, since classifications can be updated.

Aggregate turnover is calculated across all your business activities under the same PAN, nationwide — not separately per branch or state — and includes taxable supplies, exempt supplies, and exports, but excludes GST itself.

Mandatory Registration Regardless of Turnover

Certain categories must register for GST even with very low or zero turnover:

• Anyone making inter-state taxable supplies of goods (a single rupee of inter-state goods sale can trigger this, with some narrow exceptions for small service providers and specific notified categories)
• E-commerce operators, and most sellers operating through e-commerce platforms like Amazon, Flipkart, or similar marketplaces
• Casual taxable persons (occasional sellers at exhibitions, trade fairs, or pop-up events without a fixed place of business in that state)
• Non-resident taxable persons supplying in India
• Anyone required to deduct TDS or collect TCS under GST provisions
• Anyone liable to pay tax under the reverse charge mechanism
• Input Service Distributors (ISDs)
• Agents or principals making taxable supplies on behalf of someone else

If any of these apply to you, the standard turnover threshold doesn’t matter — registration is required regardless.

Documents You’ll Need

• PAN of the business or proprietor
• Aadhaar of the proprietor/partners/directors
• Proof of business address (electricity bill, rent agreement, or similar)
• Bank account details (cancelled cheque or bank statement)
• Photographs of proprietor/partners/directors
• Business constitution proof (partnership deed, incorporation certificate, etc., depending on your business type)

Step 1: Go to the GST Portal and Start a New Registration

1. Visit the official GST portal
2. Under Services, select Registration, then New Registration
3. Select Taxpayer as the type, choose your state and district, and enter your business name, PAN, email, and mobile number
4. Verify using the OTP sent to your email and mobile

Step 2: Fill in Business and Promoter Details

1. Complete the Part B of the application, which covers detailed business information
2. Enter promoter/partner details, including their PAN and Aadhaar
3. Enter your principal place of business and any additional business locations
4. Add details of the goods or services you’ll be supplying (HSN/SAC codes for your top categories)

Step 3: Upload Documents

1. Upload PAN, Aadhaar, address proof, bank details, and photographs as required
2. Double-check file formats and size limits specified on the portal, since incorrect formats are a common reason for delays

Step 4: Complete Aadhaar Authentication (Recommended)

Applications that complete Aadhaar-based authentication are generally processed faster, often without requiring physical verification, subject to the portal’s current verification rules. This is usually the quickest path to approval if you’re eligible for it.

Step 5: Submit and Track Your Application

1. Submit the application using a Digital Signature Certificate (DSC), e-Signature, or Aadhaar OTP, depending on your business type
2. You’ll receive an Application Reference Number (ARN) to track your application status
3. If the officer raises a query, respond within the prescribed time to avoid your application being rejected for inaction

Step 6: Receive Your GSTIN

Once approved, you’ll receive your GST Identification Number (GSTIN) and registration certificate, typically within a few working days for straightforward, Aadhaar-authenticated applications — longer if manual verification is needed.

There is no government fee for GST registration itself. Any cost you incur is for professional or consultancy help if you choose to use one, not for the registration process itself.

Should You Consider the Composition Scheme Instead?

If your turnover is modest, the Composition Scheme is worth considering as an alternative to regular registration:

• Available for businesses with aggregate turnover up to ₹1.5 crore in most states (₹75 lakh in specified special category states)
• A separate, lower-turnover composition option exists for service providers and mixed suppliers, generally up to ₹50 lakh
• You pay a fixed, lower percentage of turnover as tax instead of standard rates
• You cannot claim input tax credit under this scheme, and your compliance is generally simpler with quarterly payments and an annual return

This trade-off (lower tax rate and simpler filing, but no input credit) makes sense for some small businesses and not others — it depends on whether your customers need GST-compliant invoices with credit, and how much you’re currently paying in GST on your own purchases.

What Happens If You Don’t Register When Required

If your business crosses the threshold (or falls into a mandatory category) and doesn’t register, you risk:

• Financial penalties, typically the higher of 10% of the tax due or a fixed minimum amount, with steeper penalties for intentional evasion
• Inability to claim input tax credit retroactively for the unregistered period
• Potential seizure of goods in serious non-compliance cases

If you’re approaching a threshold, it’s worth monitoring your turnover monthly rather than waiting until you’ve clearly crossed it, since registration needs to happen within a set number of days of becoming liable.

Common Mistakes to Avoid

• Assuming turnover thresholds apply to inter-state sales, when even a small inter-state sale of goods can trigger mandatory registration regardless of total turnover
• Registering late after crossing the threshold, creating a compliance gap for the period you were liable but unregistered
• Choosing the Composition Scheme without checking whether your buyers need input tax credit, which they can’t get from a composition dealer
• Submitting documents in the wrong format or with mismatched details (name spelling, address) across PAN, Aadhaar, and bank proof, causing avoidable delays
• Forgetting that registration is state-specific — operating from more than one state generally requires separate registration in each

FAQs

Is GST registration free? Yes, there’s no government fee for registering on the GST portal directly. Costs only arise if you pay a professional for assistance.

How long does GST registration take? Aadhaar-authenticated applications with complete documentation are often approved within a few working days. Applications requiring manual verification or with queries raised can take longer.

Can I register for GST voluntarily even if I’m below the threshold? Yes, voluntary registration is allowed at any turnover level, and it lets you claim input tax credit and work more easily with GST-registered business clients.

Do I need separate GST registration for each state I operate in? Generally yes, if you have a place of business and make taxable supplies from more than one state, you need separate registration in each.

What’s the difference between regular GST registration and the Composition Scheme? Regular registration lets you charge standard GST rates and claim input tax credit, with standard monthly/quarterly return filing. The Composition Scheme offers a lower fixed tax rate and simpler quarterly payments with an annual return, but no input tax credit and some restrictions on inter-state sales.