GST Registration Online in India
GST registration is how a business enters the indirect-tax system. Once registered you receive a GSTIN — a PAN-linked, state-specific number that lets you charge GST on your invoices, claim input tax credit on your purchases, and file returns on the GST portal. Until you have it you cannot legally collect tax from a customer, and your buyers cannot claim credit for what they pay you.
Registration is driven by two separate tests. The first is turnover: once your all-India aggregate turnover on one PAN crosses the threshold for your state and supply type, registration becomes compulsory. The second is category: Section 24 of the CGST Act forces registration from the first rupee for situations such as interstate supply of goods, selling through an e-commerce operator, or acting as a casual or non-resident taxable person — regardless of how small you are.
This guide covers who must register, how aggregate turnover is computed, the registration types, the documents, the REG-01 process including Aadhaar and biometric authentication, indicative timelines and cost, what happens after you get the GSTIN, and the reasons applications get queried or rejected.
Hyderabad’s pharma and IT corridor drives frequent company incorporations and GST registrations in Hitech City / Gachibowli. We handle Telangana-specific registered office proofs and SEZ-related GST notes where relevant.
What is GST registration?
GST registration is the process of enrolling a business as a taxable person under the Central and State GST Acts. On approval the department issues a Registration Certificate in Form GST REG-06 carrying a 15-character GSTIN. That number is built from your state code, your PAN, an entity code, and a check digit, which is why registration is both PAN-based and state-specific.
Being registered is a bundle of rights and obligations. You gain the ability to issue tax invoices, collect GST, and take input tax credit on eligible purchases. In exchange you take on a return cycle that starts immediately and continues in every period, including periods with no sales at all — see GST return filing.
There is no government fee for registration. The real cost of getting it wrong is time: a weak document pack produces a clarification notice, and a clarification notice typically adds a week or more to the timeline.
Who needs GST registration in India?
The turnover test looks at aggregate turnover across all your business verticals on the same PAN, all-India, not at the revenue of one branch. The thresholds differ by what you supply and where you operate, and special-category states sit lower. Treat the figures below as the commonly applicable limits and confirm your own position before deciding — the notified limits and the list of special-category states have both been revised over time.
| What you supply | Normal-category states | Special-category / notified states |
|---|---|---|
| Goods only | Commonly ₹40 lakh aggregate turnover | Commonly ₹20 lakh |
| Services only | Commonly ₹20 lakh aggregate turnover | Commonly ₹10 lakh |
| Goods and services together | Generally the lower services limit applies | Generally the lower services limit applies |
| Any Section 24 category | Registration from the first rupee | Registration from the first rupee |
Two practical points get missed. Exempt and nil-rated supplies still count towards aggregate turnover even though no tax is charged on them, and the threshold is tested on the PAN — so a proprietor running two unrelated trades adds both revenues together.
When is GST registration compulsory regardless of turnover?
Section 24 overrides the threshold entirely. If you fall in one of these categories you register before making the supply, not after you reach some revenue figure.
- Interstate supply of goods, however small the consignment
- Selling through an e-commerce operator that collects tax at source
- Acting as an e-commerce operator yourself
- Casual taxable persons supplying at exhibitions, fairs, or short projects outside their home state
- Non-resident taxable persons — see GST registration for foreigners
- Persons liable to pay tax under reverse charge on inward supplies
- Agents supplying on behalf of another taxable person
- Input Service Distributors allocating common input credit across units
- Persons required to deduct tax at source under GST
- Suppliers of online information and database access or retrieval services to Indian recipients
Service providers supplying interstate are treated differently from goods suppliers — they generally still get the benefit of the turnover threshold. That single distinction decides the answer for a very large share of consultants and agencies.
How is aggregate turnover calculated for GST?
Aggregate turnover is the total value of taxable supplies, exempt supplies, exports, and interstate supplies between distinct persons on the same PAN, computed all-India for the financial year. It is taken before deducting anything except the taxes themselves.
- Include taxable sales, exempt and nil-rated sales, exports, and stock transfers between your own GSTINs
- Include the turnover of every branch and every vertical on the same PAN, in every state
- Exclude CGST, SGST, IGST, and compensation cess already charged
- Exclude inward supplies on which you pay tax under reverse charge
- Test it for the financial year — crossing the limit mid-year triggers registration from that point
Because exempt revenue counts, businesses with a large exempt line — education, healthcare, certain agricultural trade — can cross the threshold while having very little taxable revenue. That is not a reason to delay registering; it is a reason to check the computation early.
What are the types of GST registration?
You choose a registration type in the application itself, and it determines which returns you file for the rest of the registration’s life. Switching later is possible but not instant, so the choice deserves a few minutes of thought.
| Registration type | Who uses it | Main return cycle |
|---|---|---|
| Regular taxpayer | Most businesses charging GST and claiming credit | GSTR-1 and GSTR-3B, monthly or under QRMP |
| Composition dealer | Small local suppliers within the prescribed turnover limit | Quarterly CMP-08 and an annual statement |
| Casual taxable person | Occasional supply in a state where you have no fixed place | Regular returns for the validity period |
| Non-resident taxable person | Foreign suppliers with no fixed establishment in India | GSTR-5 for the validity period |
| Input Service Distributor | Head offices allocating common input credit | GSTR-6 |
| TDS deductor / TCS collector | Government bodies and e-commerce operators | GSTR-7 or GSTR-8 |
| OIDAR supplier | Overseas digital service providers serving Indian consumers | GSTR-5A |
The composition scheme cuts the filing load sharply but has real costs: you cannot collect GST from customers, you cannot claim input tax credit, and you cannot make interstate outward supplies. It suits a local retail or food business, not a B2B supplier or an exporter.
Should a small business register for GST voluntarily?
Voluntary registration is allowed below the threshold, and for some businesses it is clearly worth it. If your customers are registered businesses, a GSTIN lets them claim credit on what they pay you, which effectively makes your price cheaper than an unregistered competitor’s. If you buy significant inputs — equipment, software, agency services — registration lets you recover that tax instead of absorbing it.
The trade-off is that the return cycle begins the day the GSTIN is issued and does not pause for a quiet quarter. Nil returns are still mandatory, and skipping them accumulates late fees and eventually risks suspension. If your buyers are consumers and your input tax is small, staying unregistered until the threshold arrives is a perfectly defensible choice.
What documents are required for GST registration?
The document set varies with the constitution of the business, but the address proof is what decides most outcomes. Utility bills are generally expected to be recent — usually not older than about two months at the date of filing.
- PAN of the business, or of the proprietor for a proprietorship
- Certificate of incorporation for a company, or the LLP agreement and certificate for an LLP
- Partnership deed for a firm, or the trust deed for a trust
- PAN, Aadhaar, and photograph of each promoter, partner, director, or trustee
- PAN, Aadhaar, photograph, and appointment proof of the authorised signatory
- Board resolution or letter of authorisation appointing the authorised signatory
- Principal place of business proof — ownership document, or rent or lease agreement
- Recent utility bill or property tax receipt for the premises
- Owner’s no-objection certificate where the premises are used with consent
- Bank account proof — cancelled cheque, bank statement, or the first page of the passbook
- Top goods and services with HSN or SAC codes
- Class 3 digital signature certificate for a company or LLP signatory
Bank details can be added shortly after registration rather than at application, but the portal expects them within the prescribed window — leaving the field blank indefinitely eventually restricts return filing.
How to apply for GST registration online?
- 1.Confirm your state, supply type, and whether any Section 24 category applies to you
- 2.On the GST portal, start a new registration and complete Part A of Form REG-01 with PAN, mobile, and email
- 3.Verify by OTP and note the Temporary Reference Number, which stays valid for a short window
- 4.Log in with the TRN and complete Part B — business details, promoters, authorised signatory, and places of business
- 5.Declare your principal place of business and every additional place, state by state
- 6.Add the top goods and services with HSN or SAC codes, and bank details where available
- 7.Upload the document pack, keeping the address identical across the agreement, NOC, and utility bill
- 8.Submit with DSC for a company or LLP, or with Aadhaar-based EVC for other constitutions
- 9.Complete Aadhaar authentication for the primary authorised signatory and one promoter, or attend the designated facilitation centre if biometric verification is triggered
- 10.Track the ARN and answer any clarification notice in Form REG-03 through Form REG-04 within the stated window
- 11.On approval, download the REG-06 certificate and display the GSTIN at your place of business
The registration certificate does not reach you by post. It is downloaded from the portal, and the GSTIN has to be displayed at the principal and additional places of business along with the certificate.
What is Aadhaar authentication and biometric verification in GST registration?
Applications are risk-scored by the system. Where the score is comfortable, Aadhaar OTP authentication of the primary authorised signatory and one promoter is enough and the file moves to an officer quickly. Where the score is higher, the portal instead sends a link to book a slot at a designated GST Suvidha Kendra for biometric authentication and document verification in person.
The step is not optional in practice. If Aadhaar authentication is not completed, or the facilitation-centre visit is not finished, within the prescribed window after Part B is submitted, the ARN is not generated at all and the application simply does not proceed. Opting out of Aadhaar authentication pushes the file towards physical verification of premises and a materially longer timeline.
Physical verification under the CGST Rules means an officer visits the premises, photographs what is there, and files a verification report. A negative report moves the application towards rejection unless you contest it with evidence — which is why the address documents and on-site signage matter, particularly for a virtual office.
Is there a faster route for small B2B suppliers?
A simplified registration route was notified for applicants who self-assess that their monthly output tax on supplies to registered persons will stay below a prescribed ceiling. Opting in inside REG-01, with Aadhaar authentication of the primary signatory and at least one promoter, allows registration to be granted electronically within a few working days rather than through the usual manual queue.
The trade-off is the ceiling itself: the route is designed for small B2B suppliers, and outgrowing the declared limit means moving to the ordinary route. Because both the eligibility ceiling and the operating procedure for this scheme are recent and have been refined since notification, we confirm the current position on the portal before selecting it for you.
How long does GST registration take and what does it cost?
There is no statutory fee for registration itself. Cost comes from the DSC where one is needed, from any professional assistance, and — for a casual or non-resident registration — from the advance tax deposit that has to be paid before the certificate is issued.
| Cost or time head | Who charges or controls it | Indicative position |
|---|---|---|
| Government registration fee | GST department | Nil |
| Class 3 DSC for a company or LLP signatory | Certifying authority | Per signatory, valid one to two years |
| Advance tax deposit | GST department | Only for casual and non-resident registrations, based on estimated liability |
| Approval with Aadhaar authentication and clean documents | Jurisdictional officer | Commonly within about a week of ARN |
| Approval where biometric or physical verification is triggered | Jurisdictional officer | Materially longer — often several weeks |
| Professional fees | CA / CS firm | Scoped after a short discovery call |
Statutory timelines for officer action are prescribed in the rules and have been revised more than once, so treat the windows above as indicative. We confirm the current processing timeline and the exact deposit, where one applies, before we file.
What is a GSTIN and what do its digits mean?
A GSTIN is a 15-character identifier. The first two digits are the state code, the next ten are the PAN of the registered person, the thirteenth reflects the number of registrations on that PAN in the state, the fourteenth is a default letter, and the last is a check digit. Anyone can look a GSTIN up on the portal to confirm the legal name, registration status, and constitution.
Two consequences follow from the structure. Because the PAN sits inside the number, a change of PAN — for example on converting a proprietorship into a company — cannot be handled as an amendment and needs a fresh registration. Because the state code sits at the front, operating from a second state means a second registration in that state, not an edit to the first.
What compliance starts after GST registration?
The GSTIN is the beginning of a monthly rhythm, not the end of a task. The first return period is the one in which registration takes effect, and the clock does not wait for your first sale.
- 1.Start issuing GST-compliant tax invoices with GSTIN, HSN or SAC, place of supply, and the correct tax split
- 2.Display the registration certificate and the GSTIN at every registered place of business
- 3.File GSTR-1 and GSTR-3B every period, including nil returns
- 4.Reconcile purchase credit against GSTR-2B and act on invoices in the Invoice Management System each month
- 5.Pay tax by the prescribed date — filing without payment does not stop interest running
- 6.File the GST annual return where your turnover makes it applicable
- 7.File a GST LUT each financial year if you export without paying IGST
- 8.Report changes in address, signatory, or stakeholders through a GST amendment within the prescribed window
- 9.Keep books, invoices, and e-way bills for the retention period the Act prescribes — see bookkeeping services
Registration also interacts with the rest of your compliance calendar. If you already file TDS returns and a business income tax return, the sensible move is to put every GST date on the same calendar rather than running two systems.
Why do GST registration applications get rejected?
Most rejections are documentary rather than legal, and almost all of them are visible before filing if someone checks.
- The address is not identical, word for word, across the agreement, the NOC, and the utility bill
- The utility bill is older than the period the officer expects
- The legal name on the application does not match the PAN database exactly
- The NOC is generic and does not name the applicant or permit use of the address for GST
- Premises are residential where the activity declared implies commercial or storage use
- Aadhaar authentication or the facilitation-centre visit was not completed in time
- Physical verification reported the place of business as non-existent or unmarked
- An unusually high number of registrations already exist at the same premises
- A clarification notice in REG-03 went unanswered within the stated window
A rejection is not fatal — you can file afresh with a corrected pack, and where the rejection order is wrong on the facts there is an appeal route. But a second application on the same premises invites closer scrutiny, so it is worth getting the first one right.
What are the penalties for not registering under GST?
Operating without registration when you were liable to register is treated as an offence under the CGST Act. The department can raise a demand for the tax you should have collected for the whole period, with interest, plus a penalty that the Act sets as a percentage of the tax due subject to a prescribed minimum. Because you cannot recover the tax from customers after the fact, it lands on your own margin.
The department can also register you on its own motion where it finds an unregistered liable person, and a registration forced this way starts from a backdated effective date with all the returns for the intervening period falling due. Collecting GST on invoices without holding a valid registration is treated more seriously still.
Penalty provisions and the reduced-penalty windows have both been amended, so if you think you have crossed the threshold in an earlier period, get the exposure computed before you file anything — start with an online CA consultation.
Why choose Arjun Filings for GST registration?
Arjun Filings runs GST registration as a checklist-first engagement: a qualified CA or CS scopes the work, tells you exactly which documents are needed, and reviews every form before it is signed and submitted. You get a named specialist, a status update at each stage, and a compliance calendar for whatever comes next.
- CA-led desk for GST registration
- Checklist before portal submission
- Mismatch and notice awareness
- Clear status until certificate or ack