GST Registration in India: Get Your GSTIN Without the Guesswork

GST registration is how a business gets its GST number from the government. Once registered, you can legally charge GST on sales, claim back the GST you paid on purchases, and trade across state lines without trouble.

Most businesses must register once yearly sales cross a set limit. Some must register from day one, no matter how small. And since 1 November 2025, many small businesses can get their number in three working days instead of waiting a week or more.

Here is everything you need: who must register, what papers to keep ready, how long it takes, what it costs, and what happens after your number arrives.

What Is GST Registration? (And What Is a GSTIN?)

Think of it as getting a licence plate for your business in the tax system.

GST registration is the process. You fill out an online form, upload papers, and the department checks them.

GSTIN is what you get at the end: a 15-character Goods and Services Tax Identification Number, unique to you in that state.

Form GST REG-06 is your certificate. When someone asks for "proof of GST registration", this is what they mean.

Your GSTIN is state-specific. A shop in Delhi and a second in Haryana need two registrations. Same PAN, different GSTIN.

How to Read Your 15-Digit GSTIN

So if a supplier's GSTIN starts with 09 but he claims to be in Mumbai, something is not right.

Who Needs GST Registration in India?

Two separate rules decide this. One looks at your sales. The other looks at what kind of business you run.

Based on Turnover

Cross the limit set for your state and supply type, and you must register. You get 30 days from the day you cross it, not 30 days from the end of the year.

Regardless of Turnover

Some businesses must register from the first rupee. This comes from Section 24 of the CGST Act.

• Anyone supplying goods from one state to another
• Casual taxable persons, such as a trader running a stall at a fair in another state
• Non-resident taxable persons
• Anyone liable to pay tax under reverse charge
• E-commerce operators running a marketplace
• Sellers supplying through Amazon, Flipkart, ONDC and similar platforms
• Input Service Distributors
• Agents supplying on behalf of someone else
• Overseas online service providers serving unregistered customers in India

You do not need to register if you supply only exempt or nil-rated goods and services. For example, if you are a farmer supplying your own produce, or you are below the limit and fall into none of the categories above.

Tax & Process For GST Registration In India 

Step 1: Visit the GST portal https://www.gst.gov.in, click on Register Now under the Services tab. 

Step 2: Select 'New Registration' and enter these details: 

 Part - A 

• Choose 'Taxpayer' on the drop-down menu. 

• Pick your state and district. 

• Enter your business name. 

• Type in your business PAN. 

• Provide you’re working email and phone number (you will receive OTPs here). 

• Complete image puzzle and click on 'Proceed' 

• Provide the OTP sent to your email and phone and click on 'Proceed.' 

• Write the Temporary Reference Number (TRN) that is displayed on the screen. 

 Part - B 

• Step 1: Return to the GST portal, and select Register in the Services menu. 

• Step 2: and choose 'Temporary Reference Number (TRN)' and fill in your TRN and captcha. Click 'Proceed.' 

• Step 3: A one-time password (OTP) will be sent to your email and phone. Enter it and click 'Proceed.' 

• Step 4: Track the status of your application. If necessary, click on the Edit icon on the right. 
• Step 5: Complete the 10 sections and attach necessary documents such as images, proof of the business address, bank details, authorization form, etc. Then, proceed. 
• Step 6: Proceed to the 'Verification' page, read the declaration, and submit the application through any of the available means: 

• Through generating an Electronic Verification Code (EVC) and receive it on mobile. 
• If you (are a company) a Digital Signature Certificate (DSC). 
• e-Sign using OTP on Aadhaar-linked mobile.
• Once completed successfully, you will get a success message with your Application Reference Number (ARN) that is sent to your email and phone.
• Note: You can also check your ARN status on GST portal. 

Documents Required For GST Resgistration In India

For entities (Sole Proprietorships): 

• PAN card (your tax ID) 

• Aadhar card (ID card) 

• A photograph of You (in a certain file type and size) 

• Bank account details 

• Proof of your address 

 For LLP and Partnership Firms: LLP and Partnership Firms 

• All partners (people in business) PAN cards 

• Partnership agreement Copy 

• All partners and Authorised Persons Photos 

• Address proof for partners 

• Identity proof of the Person authorized 

• Authorization for Signatory to Act on Business' Behalf 

 For LLP, you require either the registration certificate or any document showing the decision of the LLP 

• Bank account details 

• Evidence of the address of the business 

• HUF (Hindu Undivided Family) : 

• HUF's PAN card 

• Karta PAN and Aadhar cards of Family head 

• Karta's photo 

• Bank account details 

• Evidence of the business’s address 

 For Companies (Indian & Foreign, Public & Private) 

• Company's PAN card 

• Certificate of incorporation Ministry of Corporate Affairs 

• Memorandum of Association and Articles of Association 

• Authorized person's PAN and Aadhar cards (the one who represents the company) 

• PAN along with address proof of all directors of the company 

• Photographs of all the directors and the authorized individual 

• A document proving that the authorized person is eligible to act on behalf of the company. 

• Bank account details. 

• We will also need the business proof of domicile. 

GST Registration Turnover Limit

These limits have been in effect since 1 April 2019. Service limits have not changed since GST began in 2017.

Why ₹40 Lakh Does Not Apply to Everyone

The higher limit for goods comes with conditions. You lose it if you deal in ice cream, pan masala, or tobacco, or if you make supplies inside a state that stayed on the older limit. Then you fall back to ₹20 lakh, or ₹10 lakh in special category states.

Sell both goods and services? The lower service limit usually applies. A designer who also sells printed merchandise should plan around ₹20 lakh, not ₹40 lakh.

Which states use which limit: Most states, including Uttar Pradesh, Maharashtra, Delhi, Gujarat, Karnataka and Tamil Nadu, use ₹40 lakh for goods. Telangana stayed on ₹20 lakh. Assam, Jammu & Kashmir and Ladakh chose ₹40 lakh despite being special category states. Arunachal Pradesh, Manipur, Meghalaya, Mizoram, Nagaland, Puducherry, Sikkim, Tripura and Uttarakhand remain on ₹20 lakh.

What Counts as "Aggregate Turnover"

The number you compare against the limit is bigger than most people expect. It covers taxable sales, exempt sales, exports, and branch transfers; everything on your PAN across India, not just one shop. It excludes GST itself and purchases where you paid tax under reverse charge.

So a consultant billing ₹14 lakh from Noida and ₹8 lakh from Bengaluru has crossed ₹20 lakh. Two cities, one PAN, one total.

Crossing the line starts your filing duties too. Registration and returns come as a pair, so read up on GST return filing before you apply.

New GST Registration Rules You Should Know in 2026

This is the biggest change to registration since GST started:

Notification No. 18/2025 – Central Tax, issued on 31 October 2025, added two new rules to the CGST Rules with effect from 1 November 2025:

Rule 9A — Approval in Three Working Days

The portal can now approve an application electronically within three working days. No officer reads it. The system scores you using data checks and risk rules. Get flagged as high risk, and your file still goes for manual checking under the older Rule 9.

Rule 14A — The Simplified Route for Small Businesses

Rule 14A is optional. You choose it; nobody pushes you into it.

You qualify if:

• Your monthly output tax on supplies to registered buyers stays at or below ₹2.5 lakh, counting CGST, SGST/UTGST, and IGST together
• You complete Aadhaar authentication

What you get:

• Registration within three working days of your ARN
• Deemed approval if the department does not act within those three days

Before you opt in, know this:

• Aadhaar authentication is compulsory for the primary authorised signatory and at least one promoter or partner
• Only one Rule 14A registration per state or UT per PAN
• You select "Yes" under the Rule 14A option while filling out Form REG-01

Around 96% of new applicants are expected to qualify. For a supplier who needs a GSTIN before a client releases a purchase order, three days versus two weeks is a real difference.

Should you opt in? Four questions to consider to decide:

• Will monthly GST on B2B sales stay under ₹2.5 lakh? 
• Is your record clean? 
• Do you need the number fast? 
• Are you fine exiting later if you grow? Four yeses, and it suits you.

How to Exit Rule 14A

You are not locked in. Withdraw using Form REG-32, which GSTN enabled on the portal through an advisory dated 21 February 2026.

Exiting got easier from 1 April 2026. Before that, you needed three months of filed returns. Now one complete tax period is enough, provided all pending returns are filed.

Bank Details and Automatic Suspension

Rule 10A requires your bank account details in your GST profile within 30 days of registration, or before your first GSTR-1, whichever comes first. Skip it, and your registration can be suspended automatically. A suspended GSTIN cannot file returns or generate e-way bills.

If your situation changes and you want to close a registration properly rather than let it lapse, that is a separate process: see GST registration cancellation.

Types of GST Registration

The Composition Scheme in One Minute

Turnover under ₹1.5 crore (₹75 lakh in special category states)? You can pay a low flat rate on turnover instead of normal rates.

The catch: no input tax credit, no inter-state sales, and you cannot charge GST to customers. Your buyers get no credit either, which hurts if you sell B2B. For most businesses buying heavily, the normal scheme wins once you count the credit: see input tax credit.

Documents Required for GST Registration

Get these ready before you open the portal.

Everyone needs four things: a photograph, bank proof (cancelled cheque, passbook page or statement), business address proof, and the PAN of the entity. On top of that:

• Sole proprietor: Aadhaar of the owner
• Partnership or LLP: Partnership deed or LLP incorporation certificate, PAN and Aadhaar of all partners, their address proof, and an authorisation letter naming the signatory
• Company (private, public, OPC, foreign): Certificate of Incorporation, MOA and AOA, PAN and address proof of all directors, PAN and Aadhaar of the authorised signatory (an Indian resident), and a board resolution appointing them
• HUF, trust or society: Trust deed or registration certificate, PAN and Aadhaar of the Karta or office bearers, and an authorisation letter

Address Proof: Where Most Applications Go Wrong

This one section causes more rejections than everything else combined.

• You own it: Latest electricity bill, property tax receipt, or municipal khata copy in your name
• You rent: A registered rent agreement valid on the application date, plus the owner's electricity bill or tax receipt
• Family premises or free use: A signed No Objection Certificate from the owner, plus their ownership proof and ID
• Co-working space: The service agreement, an NOC from the operator, and their ownership or tenancy proof

The classic mistake: bill in a parent's name, agreement in the son's name, no NOC connecting the two. The officer cannot link them, so a notice follows.

Keep photos as JPEGs under 100 KB and other documents as readable PDFs or JPEGs under 1 MB. Companies and LLPs must sign with a digital signature, so arrange that first — the form cannot be submitted without it.

GST Registration Process: Step by Step

Everything happens on gst.gov.in. There is no offline route.

Part A — Get Your Temporary Reference Number

1. Go to gst.gov.in, then Services → Registration → New Registration
2. Select "Taxpayer", then your state and district
3. Enter the legal name exactly as on the PAN, then the PAN itself
4. Enter a working email and mobile number, complete the captcha, and submit
5. Enter the two OTPs — one to email, one to phone
6. Note the Temporary Reference Number (TRN), valid for 15 days

Use an email and phone you control, not your accountant's. Every future OTP lands there.

Part B — Fill Form GST REG-01

Log back in with the TRN and a fresh OTP. The form has ten tabs: Business Details (including the Rule 14A option), Promoters and Partners, Authorised Signatory, Authorised Representative, Principal Place of Business, Additional Places, Goods and Services, Bank Accounts, State Specific Information, and Verification.

Pick HSN codes for goods and SAC codes for services that match what you actually sell. A mismatch with your stated activity is a common trigger for a query notice.

Part C — Submit and Verify

Sign using one of three methods:

• DSC: Compulsory for companies and LLPs
• EVC: An OTP to the authorised signatory's registered mobile
• e-Sign: An OTP to the Aadhaar-linked mobile

Part D — Aadhaar or Biometric Verification

After submission, you get an email with one of two links.

OTP-based Aadhaar authentication: Click, enter the OTP, done.

A GST Suvidha Kendra (GSK) appointment: The system picks people for this based on risk checks. You visit in person for a fingerprint scan and photograph. Carry your Aadhaar, PAN, originals of every uploaded document, and the appointment confirmation. This runs across most states and union territories now, and you can usually do it in your home state even when registering elsewhere.

Do not miss the window. If biometric verification is not done in time, your ARN is never generated and the application stalls.

Part E — What Happens Next

• You receive an ARN and Form REG-02 as acknowledgement
• If the officer wants more, you get Form REG-03, a notice seeking clarification, and reply in Form REG-04 within seven working days
• Approved? Download Form REG-06, your certificate
• Rejected? Form REG-05 gives the reasons, and you can reapply

How Long Does It Take?

Track your status anytime on the portal using the ARN.

Once REG-06 lands, you can raise tax invoices. Get the format right from your first bill — the rules are covered in GST invoicing.

GST Registration Fees: What It Actually Costs

The government charges nothing. Applying on gst.gov.in is free.

So what are professionals charging for? Work, not access, which includes checking documents before submission rather than after a rejection, fixing the address proof chain, picking correct codes, and drafting the REG-04 reply if a notice arrives.

A rejected application is not fatal, but it costs two to three weeks. For a business waiting on a purchase order, that delay usually costs more than the fee.

Benefits of Registering Under GST

You can claim input tax credit

This is the real money. GST paid on raw material, rent, software, and equipment comes back as credit against the GST you collect. A printer buying ₹10 lakh of paper a year at 18% pays ₹1.8 lakh in GST. Registered, that is credit. Unregistered, it is a cost.

Bigger customers will work with you

Companies, PSUs, and government departments mostly refuse unregistered suppliers because they cannot claim credit on your bill. Marketplaces need a GSTIN before you can list, and inter-state sales of goods need registration from day one.

Exports get easier

Exporters can ship without paying IGST upfront by filing a Letter of Undertaking, which protects cash flow instead of locking money in refund claims — see GST LUT forms. Moving goods worth over ₹50,000 also needs an e-way bill, and that needs a GSTIN.

Should You Register Voluntarily Below the Limit?

Not always. Register voluntarily if you sell mainly to businesses, buy plenty of taxable inputs, want to sell online, or your buyers keep asking for a GST bill. Think twice if you sell only to ordinary consumers and your purchases are small. Once registered, returns are due every period, even nil ones, and late fees apply whether or not you had sales.

What Happens If You Do Not Register?

Skipping registration when you are liable is an offence under Section 122 of the CGST Act. The department does not have to prove you meant to do it.

A Delhi online seller crosses ₹45 lakh and never registers. The department works out ₹3,60,000 of GST that should have been collected, adds a ₹36,000 penalty and interest from each due date, and none of the GST paid on purchases that year can be claimed back. A year of margin, gone.

Apply within 30 days of becoming liable. Casual and non-resident taxable persons must apply at least five days before starting business. Registering late on your own, before any notice arrives, usually goes far better than registering after one.

After You Get Your GSTIN: What to Do Next

The number is the start, not the finish.

1. Display your certificate

REG-06 goes up at your principal place of business, with your GSTIN on the signboard.

2. Issue proper tax invoices

Every bill needs your GSTIN, the buyer's GSTIN for B2B sales, HSN or SAC codes, taxable value, and the tax split; see GST invoicing.

3. Check whether e-invoicing applies

Businesses with turnover above ₹ 5 crore must upload invoices to the government portal and get an IRN. From 1 April 2026, the 30-day reporting window is strictly enforced. If you miss it, your buyer loses credit. See GST e-invoicing.

4. File returns on time

GSTR-1 for sales, GSTR-3B for summary and payment, or quarterly under QRMP if turnover is up to ₹5 crore. See GST return filing for forms and due dates.

5. File the annual return

GSTR-9, plus GSTR-9C reconciliation for larger businesses — GST annual return filing.

6. Use billing software that keeps up

Rates changed on 22 September 2025 when GST moved to 5%, 18%, and a 40% slab for luxury and sin goods. Software that updates itself stops you from billing at a rate that no longer exists — see GST billing software.

7. Close it properly if you stop trading

Do not abandon a GSTIN; returns keep falling due and late fees keep stacking. Apply for GST registration cancellation instead.

Common Reasons Applications Get Delayed or Rejected

The same handful of issues cause most of the trouble.

• Address proof that does not match, with no NOC linking the names
• A rent agreement that expired before the application date
• Blurry or oversized uploads the officer cannot read
• Aadhaar not linked to the mobile, so the e-Sign OTP never arrives
• A missed GSK appointment, which means no ARN
• HSN or SAC codes that do not fit the business
• No reply to REG-03 within seven working days
• A legal name typed differently from the PAN, even by one space

What we do differently: We check the address proof chain before anything is uploaded, match codes to your actual activity, and draft the REG-04 reply inside the seven-day window if a notice comes.

Get Your GSTIN With Expert and Timely Support

Send us your PAN, Aadhaar, address proof, and bank details. We check everything before it goes near the portal, pick the right route, including whether the three-day Rule 14A scheme fits, and file REG-01 the same day. If a notice comes, we handle the reply.

Book a free consultation. Tell us what you sell and where, and we will tell you exactly what you need.