GST Registration
Get your GSTIN in 3-7 working days
Complete GST registration with expert classification of HSN/SAC codes, so you start compliant from day one.
What's included
- GSTIN application & follow-up
- HSN/SAC code classification
- Composition vs regular advice
- Post-registration checklist
Understanding GST Registration
GST registration is the process of obtaining a 15-digit Goods and Services Tax Identification Number (GSTIN) from the GST Network. Under Section 22 of the CGST Act, 2017, registration becomes mandatory once your aggregate turnover crosses ₹40 lakh for suppliers of goods or ₹20 lakh for service providers (₹20 lakh and ₹10 lakh respectively in special category states). Section 24 also lists cases where registration is compulsory regardless of turnover, such as inter-state supply of goods or selling through e-commerce operators.
The application is filed online in Form GST REG-01 on the GST portal, backed by Aadhaar authentication of the proprietor, partners or directors. When Aadhaar authentication succeeds and the application is complete, the officer must approve it within 7 working days under Rule 9 of the CGST Rules, and most clean applications clear in 3 to 7 working days. If Aadhaar authentication is skipped or the officer has doubts, physical verification can stretch the timeline to 30 days.
Getting the application right the first time matters. A vague principal place of business proof, a mismatched trade name or an incorrect HSN code invites a query in Form REG-03, and an unsatisfactory reply leads to rejection in REG-05. We prepare the application, choose the correct registration type for you (regular or composition under Section 10, with its ₹1.5 crore turnover ceiling), respond to any departmental queries and hand you the final registration certificate in Form REG-06.
Who needs this?
Businesses crossing the threshold
Sellers of goods with aggregate turnover above ₹40 lakh, or service providers above ₹20 lakh, in a financial year must register under Section 22 of the CGST Act. Turnover is counted PAN-wide across all branches in India.
Inter-state suppliers of goods
If you supply goods from one state to another, registration is compulsory under Section 24 from the very first rupee of turnover, with no threshold benefit.
E-commerce sellers
Anyone selling goods through operators like Amazon, Flipkart or Meesho must register irrespective of turnover. The marketplaces will not activate your seller account without a valid GSTIN.
Businesses whose buyers demand GST invoices
Corporate and government customers routinely insist on GST invoices so they can claim input tax credit. Voluntary registration under Section 25(3) lets you bill them properly and stay on approved vendor lists.
Startups claiming input tax credit
If you incur significant GST on rent, software, equipment or marketing, registering lets you offset that input tax against your output liability instead of absorbing it as a cost.
Casual and non-resident taxable persons
Exhibitors at trade fairs, seasonal sellers and foreign businesses making taxable supplies in India need registration before starting, along with an advance tax deposit.
When this is NOT the right fit
| Your situation | What applies instead |
|---|---|
| ✕You supply only exempt or nil-rated goods or services | Section 23 of the CGST Act says persons engaged exclusively in exempt supplies, such as fresh produce or unprocessed agricultural goods, are not liable to register at all. |
| ✕You are a salaried employee | Services by an employee to an employer in the course of employment are outside GST entirely under Schedule III, so salary income never triggers registration. |
| ✕You are an agriculturist selling produce from your own land | Agriculturists supplying produce out of cultivation of land are specifically excluded from registration under Section 23(1)(b). |
| ✕You want composition scheme but sell through e-commerce or inter-state | Composition dealers under Section 10 cannot make inter-state outward supplies of goods, and until recently could not sell via e-commerce. If your model depends on these, you need regular registration instead. |
Not sure which applies to you? Message us — we'll point you to the right service in minutes, free.
Documents you'll need — and why
PAN card of the business or proprietor
The GSTIN is built around your PAN, so the portal validates the name and PAN against the income tax database before the application moves forward.
Aadhaar card of proprietor, partners or directors
Aadhaar authentication via OTP is what unlocks the fast 7-working-day approval track and usually avoids physical verification of your premises.
Photograph of proprietor or authorised signatory
A recent passport-size photograph in JPEG format is a mandatory upload in REG-01 for each promoter and the authorised signatory.
Proof of principal place of business
A recent electricity bill, property tax receipt or municipal khata copy establishes the premises. This is the document officers scrutinise most, and weak proof is the top reason for REG-03 queries.
Rent agreement or consent letter (NOC)
If the premises are rented, the registered rent agreement is needed; if owned by a relative, a consent letter from the owner along with their ownership proof is required.
Bank account proof
A cancelled cheque or first page of the passbook links your bank account to the GSTIN. It can be furnished within 30 days of registration, but filing it upfront avoids later suspension.
Constitution documents
Partnership deed, LLP agreement or certificate of incorporation proves the legal existence of the entity and determines who can be the authorised signatory.
Digital signature or authorisation letter
Companies and LLPs must sign the application with a DSC; proprietors and partnerships can use Aadhaar-based e-sign, and a board resolution or authorisation letter appoints the signatory.
How it works, step by step
- 1
Document collection and review
Day 1You share the documents over email or WhatsApp. We verify names against the PAN database, check the address proof is acceptable and decide whether regular or composition registration suits you.
- 2
Filing Form GST REG-01
Day 1-2We fill Part A (PAN, mobile, email verification via OTP) and Part B (business details, promoters, place of business, HSN codes, bank details) and submit with your Aadhaar authentication.
- 3
Aadhaar authentication and ARN generation
Same dayThe proprietor or signatory completes Aadhaar OTP verification on the link received by email. An Application Reference Number (ARN) is generated instantly for tracking.
- 4
Departmental processing and query handling
3-7 working daysThe officer examines the application under Rule 9. If a notice in REG-03 arrives, we draft and file the reply in REG-04 within the 7-working-day window.
- 5
GSTIN allotment and handover
Day 5-8On approval you receive the registration certificate in Form REG-06 with your 15-digit GSTIN. We share portal login credentials, explain invoice format rules and your first return due dates.
Due dates to know
Application deadline
Within 30 days of becoming liable
Section 25(1) requires you to apply within 30 days of crossing the threshold or triggering compulsory registration.
Casual taxable person
At least 5 days before commencing business
Registration plus advance tax deposit must be completed before the exhibition or event begins.
Bank account furnishing
Within 30 days of grant of registration
Rule 10A; non-furnishing can lead to suspension of the GSTIN.
First return after registration
GSTR-3B by the 20th of the month following registration
Nil returns are mandatory even if you have no transactions yet.
What non-compliance costs
Carrying on business without registration when liable
Penalty under Section 122(1)(xi) of ₹10,000 or the amount of tax evaded, whichever is higher, plus payment of all back taxes with 18% interest.
Collecting GST without a valid registration
The entire amount collected must be deposited with the government, along with a penalty of ₹10,000 or an equivalent amount, whichever is higher, under Section 76.
Late application after crossing the threshold
You lose input tax credit on purchases made during the unregistered period and remain liable for output tax on those sales out of your own pocket.
Furnishing false information in the application
Registration can be cancelled ab initio under Section 29(2), and a penalty of up to ₹25,000 under Section 122(3) may apply.
Why doing this right pays off
Legal authority to collect GST and issue tax invoices
Only a registered person can charge GST and pass on input tax credit to buyers, which is essential for B2B relationships and marketplace onboarding.
Input tax credit on business purchases
GST paid on rent, inventory, software, machinery and services becomes a credit against your output liability rather than a sunk cost, often saving 5% to 18% on inputs.
Access to e-commerce and government contracts
Amazon, Flipkart, GeM and most tender processes require a GSTIN at signup. Registration opens sales channels that are simply closed to unregistered businesses.
Pan-India sales without threshold worries
Once registered, you can supply to any state, bill customers anywhere in India and expand without tracking whether each transaction is permitted.
Stronger business credibility
A GSTIN on your invoices and letterhead signals a compliant, established business to banks, lenders and large customers who verify vendors on the GST portal.
Common DIY mistakes we see
- Uploading a poor-quality or outdated address proof, which triggers a REG-03 query and can add two to three weeks to a process that should take one.
- Choosing composition scheme without realising it blocks inter-state supply of goods and input tax credit, then having to switch mid-year.
- Entering a trade name different from what appears on the shop board or marketplace listing, causing mismatches during physical verification.
- Skipping Aadhaar authentication, which pushes the application into the slow lane with mandatory site verification and up to 30 days of waiting.
- Selecting wrong HSN or SAC codes at registration, which later causes rate disputes and mismatched e-way bills.
Frequently asked questions
With Aadhaar authentication and clean documents, GSTIN is typically allotted in 3 to 7 working days. If authentication fails or the officer orders physical verification of your premises, it can take up to 30 days. Most delays trace back to weak address proof.
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Next GSTR-3B due date
20 July 2026 — book now and beat the last-minute rush.