GST Registration Process in India 2026: Documents, Fees, Timeline and Why Applications Get Rejected

The certificate arrived. The suspension notice came seven weeks later.

Farhan runs a mobile-accessories shop in Bhopal. He registered for GST himself on the portal in December 2025, no CA, and the certificate came through in five days. He started billing customers with GST, the way it is supposed to be done.

In February a message landed on his portal. Registration suspended. He had not filed a wrong return or evaded anything. He simply never went back and added his bank account details after the GSTIN was issued. Under the rule in force from November 2025, a registered business that does not furnish valid bank details within 30 days can have its registration suspended by the system itself. A suspended registration means no returns, no e-way bills, no valid invoices, and his buyers could not claim input tax credit on his bills either.

It took him eleven days and two visits to the range office to get it revoked. The registration was never the hard part. Everything that came after is where the actual work of GST lives, and nobody had told him.

Composite example. Names and identifying details have been changed.

Accountune is cloud-based GST billing, inventory and accounting software built in Jaipur since 2017, used by 12,000+ Indian small businesses. It builds your GSTR-1 and GSTR-3B from the invoices you raise, so the compliance that begins the day your GSTIN is issued does not turn into the surprise Farhan walked into.

Statutory positions on this page were last verified on 11 September 2026 against the CGST Act, Notification No. 18/2025 - Central Tax, the GSTN advisory of 20 November 2025 and CBIC Instruction No. 03/2025-GST. Sources are listed at the end. This is general information, not tax advice; confirm your own position with your CA.

Who needs GST registration in 2026

GST registration becomes mandatory the moment your aggregate turnover crosses the threshold, but turnover is only one of the triggers, and for many small businesses it is not the one that catches them.

The turnover threshold is ₹40 lakh in a financial year for a business that only supplies goods, and ₹20 lakh for a business that supplies services, across most Indian states. This GST registration limit drops in special-category states, the North-Eastern states along with a few hill states, which use ₹20 lakh and ₹10 lakh. Aggregate turnover means the all-India turnover under the same PAN, counting taxable, exempt and export supplies together, but excluding the GST itself.

The part that surprises people is compulsory registration. Under Section 24 of the CGST Act, several categories must register at any turnover, even at ₹1 of sales. If you sell through an e-commerce platform like Amazon or Flipkart, you must register. If you make a taxable inter-state sale of goods, you must register. Casual taxable persons setting up a temporary stall at a trade fair in another state, non-resident taxable persons, and anyone liable to pay tax under reverse charge all fall in this net. A shopkeeper doing ₹15 lakh a year who starts selling online has crossed no turnover line, but has crossed into mandatory registration.

There is also voluntary GST registration. A business below the threshold can register by choice to claim input tax credit on purchases, to sell to larger GST-registered clients who want a proper tax invoice, and to look more established. For a small supplier trying to win a corporate buyer, the GSTIN is often the price of entry.

The composition scheme: a lighter option for small businesses

Once you cross the threshold you have a choice between regular registration and the composition scheme, and it is worth understanding before you apply. The composition scheme is a simplified route for businesses with aggregate turnover up to ₹1.5 crore (₹75 lakh in special-category states), where you pay a small fixed percentage of turnover, 1% for traders and manufacturers, instead of collecting GST at the normal slab rate on every invoice. You file a quarterly statement in Form CMP-08 rather than monthly returns, which is a real reduction in paperwork for a shopkeeper running the counter alone.

The trade-off is that a composition dealer cannot claim input tax credit on purchases, cannot make inter-state outward supplies, and cannot collect GST separately from customers, so the tax comes out of the margin. It suits a small local retailer selling mostly to walk-in customers who do not need a tax invoice for ITC. It does not suit a business selling to other GST-registered firms, because those buyers get no credit. You opt into composition at the time of registration or at the start of a financial year, so decide which model fits before you file, not after.

Types of GST registration

The form asks you to pick a taxpayer type, and the choice changes your returns, your deposits and your validity period. Six types cover almost every applicant.

If you are unsure between normal and composition, the section above lays out the trade-off. Everything else in this guide assumes a normal taxpayer, which is what a shop, a trader or a small manufacturer files as.

What GST registration costs

Nothing, if you do it yourself.

The government charges no fee for GST registration. The entire application on gst.gov.in, from Part A through to the certificate in Form REG-06, is free. There is no registration fee, no certificate fee and no renewal fee for a regular registration, which stays valid until it is cancelled or surrendered.

What you may pay for is help. A CA or a filing agent charges a professional fee for preparing documents and handling queries, and that fee varies widely. That is a legitimate service charge, and for a partnership or a company with a DSC to arrange it is often money well spent.

What you should watch for are third-party websites that present a "GST registration fee" as though it were a government charge. It is not. If a page quotes a government fee for GST registration, that page is wrong, and at least one large directory currently ranking for this topic tells readers to "pay the GST registration fee (if applicable)".

Two costs are real and often forgotten. A Digital Signature Certificate is mandatory for companies and LLPs, and a DSC is bought from a licensed certifying authority. And a casual taxable person must deposit an advance equal to the estimated tax liability for the registration period, which is refundable against actual liability but does need to be funded up front.

Documents required for GST registration

The document list is short, but it changes with the type of business, and a single mismatched or outdated document is the most common reason an application stalls.

Every applicant needs four categories: identity, constitution of business, address proof and bank proof.

Aadhaar authentication is required from the primary authorised signatory and at least one promoter or partner. Companies and LLPs cannot use Aadhaar e-signing for the final submission and must use a DSC.

Address proof is where applications actually fail

For premises you own, any one document is enough on its own: the latest electricity bill, the property tax receipt, or the municipal khata copy.

For rented premises, you need the rent agreement together with one ownership proof of the landlord.

For the situation most first-time registrants are actually in, a shop run from a shared space, a co-working desk or a home, you need a No-Objection Certificate from the owner plus a recent utility bill. Shared premises without a proper NOC is one of the most frequent rejection triggers.

Three details matter more than the list itself. The name on your PAN, your Aadhaar and your application form must be identical, down to the middle name and the spelling. Utility bills used as address proof should be recent, ideally within the last two or three months. And the photograph is usually required as a JPEG under 100 KB, which sounds trivial until an upload fails at the last step.

The step-by-step registration process on the portal

The entire registration happens online at gst.gov.in and runs in two parts. GST registration online is the only route; there is no offline or paper application, and the process runs the same way in every state. Understanding the split matters, because most people think they have "applied" when they have only finished Part A.

Part A is where you enter your PAN, mobile number and email. The portal verifies these with an OTP and issues a Temporary Reference Number (TRN). That is not your application; it is a token that lets you into Part B. The TRN is valid for 15 days.

Part B is the real form. Using the TRN, you fill in the business details: the trade name, the constitution of business, the principal place of business, the goods or services you deal in, the details of promoters or partners, and the bank account. You upload documents here, then verify the whole application either through Aadhaar OTP or a Digital Signature Certificate depending on the business type. Companies and LLPs must use a DSC. On submission, the portal generates an Application Reference Number (ARN), and this is the number you track.

Once the ARN is generated the application goes to the jurisdictional officer's queue. If the officer needs clarification they issue a notice in Form REG-03, and you respond in Form REG-04. Preview the entire application before you submit, because errors found afterwards cannot be quietly edited; they need an amendment or a fresh application.

So, how to get a GST number, step by step:

1. Part A (TRN): enter PAN, mobile and email, verify with OTP, receive the Temporary Reference Number, valid 15 days.

2. Part B (application): log back in with the TRN, fill business details, upload documents, choose your verification method.

3. Verification: authenticate via Aadhaar OTP, or DSC for companies and LLPs.

4. ARN: on submission the portal issues the Application Reference Number.

5. Officer review: approval, or a REG-03 query if something needs clarifying.

6. GSTIN issued: the registration certificate in Form REG-06 is available for download.

The whole thing is designed to be self-service. Where people get stuck is not the portal mechanics but the documents behind them, which is why the name-match and address-proof discipline above decides most outcomes before you even reach Part B. That same discipline is what GST billing software in India should carry forward afterwards, because the details you enter here are the details that appear on every invoice you raise.

How long GST registration takes in 2026

Ask this in five places and you get five answers, because the rules changed on 1 November 2025 and most guides have merged the two new provisions into one.

Rule 9A and Rule 14A are not the same thing

Notification No. 18/2025 - Central Tax, dated 31 October 2025, inserted both, effective 1 November 2025. They do different jobs, and the ₹2.5 lakh figure belongs to only one of them.

Rule 9A is system-side. When you file under Rule 8, 12 or 17, the portal runs data analysis and risk parameters against your application. If nothing flags, registration is granted electronically within three working days with no officer touching it. There is no turnover condition and no box to tick. You either look low-risk to the system or you do not.

Rule 14A is a choice you make. If you assess that your monthly output tax on supplies to registered persons will stay at or below ₹2.5 lakh, including CGST, SGST or UTGST, IGST and Compensation Cess, you can opt into the simplified scheme when you apply. Aadhaar authentication is compulsory for this route.

The Rule 14A trade-off nobody mentions

Every guide presents Rule 14A as a free upgrade. It is not.

A person registered under Rule 14A in a State or Union Territory cannot take another registration in that same State or Union Territory. If you might open a second vertical, a separate branch registration or a distinct business line in the same state, opting in closes that door while you remain in the scheme.

And it is a self-assessment. If your B2B output tax crosses ₹2.5 lakh a month you are required to withdraw from the scheme. Nobody warns you in advance; the obligation sits with you.

For a single-counter shop or a solo service provider billing mostly B2C, the trade-off costs nothing and the speed is real. For anyone planning multiple registrations in one state, the standard route is safer even though it is slower.

What actually decides your timeline

Neither rule saves you from bad paperwork. The routes above are ceilings, not promises. A name mismatch between PAN and Aadhaar, an address that does not match the utility bill down to the unit number, or shared premises without an NOC will pull you into officer review regardless of which route you qualified for. Document accuracy decides your real GST registration time far more than the rule you qualified for does.

Watch this space: as of August 2026 the Centre and states were reported to be drafting a uniform circular standardising registration documents for businesses passing on input tax credit above ₹2.5 lakh a month, to remove the inconsistency between central and state formations. It has not been issued. Check CBIC and GST Council announcements before relying on it.

Aadhaar authentication vs biometric verification

When you apply, the portal asks whether you want to authenticate via Aadhaar. This single choice decides how fast your registration moves and, in some cases, whether you have to leave your shop and stand in a queue.

If you choose Aadhaar authentication, an OTP-based link is sent to the mobile number and email linked with the Aadhaar of the primary authorised signatory and one promoter or partner. You click it, enter the Aadhaar number and validate with the OTP. Done correctly, this is what gets applications approved in days rather than weeks without a physical visit. But there is a trap in the timeline: if the Aadhaar details are not verified within 15 days of the relevant stage, the ARN is not generated at all and the application is treated as never submitted.

Not every applicant gets the clean OTP route. The GST system runs a risk assessment and some applicants are flagged for biometric-based Aadhaar authentication. Under Rule 8 of the CGST Rules this has been rolling out state by state since 2025. If you are flagged you receive an email with a link to book a slot at a designated GST Suvidha Kendra, where you appear in person for fingerprint capture, a photograph and document verification. Biometric verification must also be completed within 15 days, or no ARN is generated.

Skipping Aadhaar authentication entirely is a different thing from missing the window. It routes the application to physical verification, where the officer has up to 30 days instead of 7 and the odds of a query rise. For most small businesses, completing Aadhaar authentication cleanly is the difference between a week and a month.

How to track your application

Once the ARN is generated you can follow the application without calling anyone.

Go to gst.gov.in, then Services, then Registration, then Track Application Status, and enter your ARN. No login is needed. The portal shows the current stage and any officer remarks.

The statuses you will see:

• Pending for processing: filed and sitting in the officer's queue

• Site verification assigned or completed: physical verification is in play, expect the longer timeline

• Pending for clarification: a REG-03 notice has been issued. Reply in REG-04 within 7 working days or the application is auto-rejected

• Approved: the certificate in REG-06 is available to download

• Rejected: the order is in REG-05 and states the reason

Check the status at least twice in the first week. A REG-03 notice does not always generate a reliable email alert, and the seven-day reply clock runs whether or not you saw it.

The 30-day bank account rule most people miss

This is the rule that caught Farhan, and the one that "how to register for GST" guides almost never connect to registration, because it applies after the GSTIN is issued.

Under the GSTN advisory dated 20 November 2025, a newly registered business must furnish valid bank account details on the portal within 30 days of registration, or before filing its first GSTR-1 or IFF, whichever is earlier. If it does not, the system can suspend the registration on its own. This is not a manual crackdown; it is automated portal enforcement, which is exactly why it catches careful people who assumed the job ended when the certificate arrived.

A suspended registration is not a small inconvenience. While suspended a business cannot file returns, cannot generate e-way bills and cannot issue valid tax invoices, and its buyers lose the input tax credit on any invoice raised during the suspension. The commercial damage lands on both sides of the transaction.

The fix is five minutes. Log into the portal, go to your profile, and add at least one active bank account in the exact name of the business, with the correct IFSC and account number. Verification is automatic. If a suspension has already happened for this reason, updating and verifying the bank account usually gets it revoked within a few days.

The deeper lesson is the one Farhan learned the hard way: registration is the doorway, not the destination. The day the GSTIN is issued, filing obligations begin.

Why GST registrations get rejected

Thousands of applications are rejected every month and the reasons are boringly predictable. Knowing the top three before you apply removes most of the risk.

The single most common reason is a name mismatch between PAN and Aadhaar. Even a small difference, a middle name present on one document and absent on the other, or a spelling variation, makes the system flag the application at the authentication stage. The fix is not clever: use the exact name format that appears on your PAN, and if PAN and Aadhaar genuinely disagree, correct one of them before you apply rather than after you are rejected.

The second is address and premises proof: an outdated utility bill, an unregistered rent agreement, shared premises without an NOC, or an address on the form that does not exactly match the supporting document, including floor, unit number and pin code.

The third is wrong or incomplete constitution documents, such as applying as a proprietorship when the business is a partnership, or missing the partnership deed or the company's incorporation certificate.

When the officer finds a gap they do not reject outright. They issue a Show Cause Notice in Form REG-03, and you have 7 working days to reply in Form REG-04 with corrected documents. Miss that deadline and the application is auto-rejected via Form REG-05.

Rejection is not final. There is no bar and no penalty on reapplying, so you can correct the specific issue and file a fresh REG-01 immediately, or, if you believe the rejection was legally unsound, file an appeal in Form APL-01 within three months. Most rejections reverse on a clean reapplication with the right documents.

Your rights when the officer asks for more

Not every document demand during registration is legitimate, and applicants routinely hand over paperwork they were never required to provide.

Under CBIC Instruction No. 03/2025-GST, which is the operative standard for how field officers process every REG-01 application, an officer can only ask for the documents listed in Form REG-01. Additional demands require prior approval from an Assistant Commissioner or Deputy Commissioner; they are not the officer's to make on a whim. Specifically, MSME certificates and trade licences cannot be demanded as a condition of registration.

The instruction also clarified premises proof, which had become a common friction point. For owned premises, any one document (a property tax receipt, an electricity bill or a municipal khata copy) is sufficient on its own. For rented premises with a registered rent agreement, only the agreement and one ownership proof of the lessor are required; the lessor's personal identity document is not mandatory.

This matters because a genuine applicant, unsure of their footing, tends to over-comply and submit more than was asked, which creates fresh mismatches and delays. If a demand appears excessive you can note that it falls outside REG-01. A February 2026 High Court ruling reinforced that a Show Cause Notice which merely reproduces statutory language without specifying the actual deficiency is not a sound basis for adverse action. Knowing the rule is not about arguing with the department; it is about not defeating your own application.

GSTIN in hand: what to do next

Getting the GSTIN is the moment most guides end. It is actually the moment the real obligations begin, and handling them in the first week saves months of correction later.

First, learn to read a GSTIN. Every GSTIN is a 15-character code: the first two digits are your state, the next ten are the PAN of the business, and the rest encode registration count and a check digit. Being able to verify a supplier's GSTIN before you pay them is basic due diligence, because an invalid or cancelled number means you cannot claim input tax credit on that invoice. You can check any GSTIN with Accountune's free GSTIN verification tool, no login required.

Second, add your bank details within 30 days, the rule from the section above, and confirm your invoice series is set up for the current financial year.

Third, understand what you now have to file. GSTR-1 is the invoice-by-invoice report of your sales; GSTR-3B is the summary return where you pay tax and claim ITC. Both are mandatory for a regular registrant, monthly or quarterly. If those two forms are new to you, our guide on GSTR-1 vs GSTR-3B breaks down the difference without jargon.

What to look for in billing software after registration

A newly registered business does not need accounting depth on day one. It needs four things, and this is the checklist worth applying to any tool you shortlist.

1. HSN-linked rates applied automatically, so the correct slab lands on every line item without anyone looking it up

2. GSTR-1 and GSTR-3B built from the invoices you raised, not re-entered from a register at month end

3. A read-only login for your CA, so data does not move by email before every filing

4. A free tier you can stay on, because a business three weeks past registration does not yet know its billing volume

Accountune meets all four. Its Free plan raises GST-compliant invoices at ₹0 with HSN-linked tax on every bill, builds both returns from that billing, gives your CA their own read-only access, and runs on web, Android and iOS from one login. It is cloud-based, so billing needs an internet connection at the counter; if your shop loses connectivity often, an offline-first tool is the more honest choice.

This is where a newly registered business either starts on a clean footing or begins accumulating small errors. When billing and return preparation happen in the same system the data is consistent by definition: the invoices you raise feed GSTR-1 and GSTR-3B, you review and submit rather than re-enter, and the HSN-linked GST rate is applied to every bill automatically. That is what Accountune does, and its Free plan lets a fresh registrant raise compliant invoices at ₹0 from the day the GSTIN arrives.

Conversational queries

"How much does GST registration cost?" Nothing, if you do it yourself. The government charges no fee on gst.gov.in. You pay only if you hire a CA or an agent. Be wary of third-party websites presenting a "GST registration fee" as a government charge; it is their service fee.

"How long does GST registration take in 2026?" Three working days if the system grants it electronically under Rule 9A, about seven for a clean Aadhaar-authenticated application, and up to thirty if you skipped Aadhaar or were flagged for biometric verification. The real timeline depends more on document accuracy than on the portal.

"Can I register for GST without a shop or commercial address?" Yes. You can register from a home address or a co-working space with a No-Objection Certificate from the property owner and a recent utility bill. The address on the form must match the document exactly.

"Kya GST registration ke liye CA zaroori hai?" Nahi. Agar documents saaf hain, PAN aur Aadhaar ka naam ek jaisa ho, aur address proof recent ho, to aap khud portal pe kar sakte hain, bilkul free. CA tab kaam aata hai jab constitution complex ho, ya pehle reject ho chuka ho. Company aur LLP ko DSC chahiye hota hai, wahan madad lena samajhdari hai.

"What is the difference between GSTIN and GST registration?" GST registration is the process; the GSTIN is the result. Completing registration gets you a 15-digit GST Identification Number, which then appears on every invoice and return.

"Do I need separate GST registration for each state?" Yes. GST is state-specific. A place of business in more than one state means a separate registration and a separate GSTIN in each, filed separately, each with its own input tax credit pool. Accountune handles multiple GSTINs from one login.

"Can I get my GST number in 3 days?" Yes, in two situations: the portal identifies you as low-risk under Rule 9A, or you opt into the Rule 14A simplified scheme with monthly B2B output tax at or below ₹2.5 lakh. A clean application is the precondition for both.

Start billing correctly from day one

Registration is the paperwork. Compliant billing is the habit that keeps your GSTIN clean, and it begins the moment your number is issued. Accountune's Free plan lets a newly registered business raise GST-compliant invoices at ₹0, with HSN-linked tax on every bill and returns that build themselves in the background.

Start free with Accountune · Verify any GSTIN free