GST Registration

GST (Goods and Services Tax) registration gives your business a 15-digit GSTIN — the legal licence to collect tax, claim input tax credit (ITC), and trade with registered buyers across India. Every business above the prescribed turnover threshold must register under the Central Goods and Services Tax Act, 2017 (CGST Act). Skip it and you cannot legally charge GST on your invoices, your B2B buyers lose their ITC entitlement, and you face penalties under Section 122 of the CGST Act.

The entire process runs through the GST portal (www.gst.gov.in) — no physical visits, no notarised documents. A complete application is approved in 3-7 working days; Aadhaar-authenticated filings can come through in as little as one working day. Getting the application right the first time — correct HSN/SAC codes, PAN-matched details, valid address proof — is what separates a clean 3-day approval from a 3-week back-and-forth with the assigned GST officer.

At a Glance

• Who needs it: Annual turnover above ₹40 lakh for goods (₹20 lakh for services; ₹10 lakh in special category states); all e-commerce sellers; all inter-state suppliers — regardless of turnover.
• Governing law: Central Goods and Services Tax Act, 2017 (CGST Act); Integrated GST Act, 2017 (IGST Act); and your state's SGST Act.
• Standard turnaround: 3-7 working days for a complete application; 1 working day for Aadhaar-authenticated filings where biometric verification is not triggered.
• GSTIN format: A 15-digit alphanumeric code — first 2 digits are your state code, next 10 are your PAN, followed by entity type indicator and a check digit.
• E-invoicing threshold: Mandatory from your very first invoice if your previous-year aggregate turnover exceeded ₹5 crore across all GSTINs.
• Late registration penalty: 10% of the tax amount due (minimum ₹10,000) under Section 122 CGST Act, plus potential prosecution for wilful evasion.

What's New for FY 2026-27

Three regulatory changes effective in FY 2026-27 directly affect new registrants from day one.

• Invoice Management System (IMS) live: From October 2024, every registered taxpayer manages inward invoices through IMS before GSTR-2B is auto-generated. Your ITC claim is only as good as your supplier's timely GSTR-1 filing — start reconciling from the first month.
• GSTR-1A correction window: This new amendment return lets you fix GSTR-1 errors after filing but before GSTR-3B is submitted. It eliminates the old problem of locked mistakes cascading into ITC mismatches with your buyers.
• E-invoicing threshold cut to ₹5 crore: If your aggregate previous-year turnover across all GSTINs and businesses linked to your PAN exceeded ₹5 crore, e-invoicing is mandatory for every B2B, export, and SEZ supply from the start of the next financial year.
• Biometric Aadhaar authentication: High-risk applicants are called to a GST Seva Kendra for in-person biometric verification before registration is approved. This applies where the portal's risk engine flags an inconsistency in your application details.
• Mandatory bank account linking within 30 days: Under amended Rule 10A, your GSTIN is auto-suspended if you do not link a PAN-validated bank account within 30 days of registration — blocking all return filing until reactivation.
• QRMP scheme from registration day one: Businesses with projected annual turnover up to ₹5 crore can opt into the Quarterly Return Monthly Payment (QRMP) scheme immediately, cutting return filings from 24 per year down to 8.

Who Needs GST Registration

• Goods supplier above threshold: Any business selling goods with annual turnover above ₹40 lakh (₹20 lakh in Manipur, Mizoram, Nagaland, and Tripura) must register before crossing the limit.
• Service provider above threshold: Annual revenue above ₹20 lakh for services (₹10 lakh in special category states) triggers mandatory registration, regardless of the nature of services supplied.
• E-commerce sellers: Every seller on Amazon, Flipkart, Meesho, Myntra, or any other electronic commerce operator must register — even for the very first sale, with no turnover minimum under Section 24 CGST Act.
• Inter-state suppliers: Any business supplying goods or services across state lines must register before making the first inter-state supply, irrespective of annual turnover.
• Reverse charge payees: If your business pays tax under the reverse charge mechanism (RCM) — such as payments to advocates, goods transport agencies, or imported services — registration is mandatory from the first RCM transaction.
• Exporters: Businesses exporting goods or services must register to claim IGST refunds or to operate under a Letter of Undertaking (LUT) for zero-rated supplies without upfront tax payment.
• Casual and non-resident taxable persons: Anyone supplying goods or services in India for a temporary period — such as a foreign company exhibiting at a trade fair — must register as a casual or non-resident taxable person before commencing supply.

How It Actually Works

The GST registration process has seven distinct stages. Each one has a specific time window — missing any of them adds days to your timeline.

Step 1: Document Review and Pre-Check

We review your PAN card, Aadhaar, proof of business address, bank account documents, and constitution papers before opening the portal. The most common rejection trigger is a mismatch between the legal name on your PAN and the name on your incorporation certificate or partnership deed. We catch and resolve these before submission. If your turnover is close to the ₹5 crore e-invoicing threshold, we also confirm your Invoice Registration Portal (IRP) integration at this stage.

Step 2: Part A — PAN and OTP Verification

On the GST portal, we enter your legal name, PAN, email address, and mobile number. The portal validates your PAN against the CBDT (Income Tax) database in real time. You receive a one-time password on your Aadhaar-linked mobile and email to confirm your identity. A Temporary Reference Number (TRN) is generated, valid for 15 days, to complete the Part B application.

Step 3: Part B — Business Details and Document Upload

Using the TRN, we complete the full registration form: principal place of business with the correct PIN code, nature of supply (goods, services, or both), HSN and SAC codes for each product or service category, details of all partners or directors, and bank account information. The HSN/SAC code selection determines your default GST rate and your e-invoicing obligation — an error here creates downstream ITC disputes for your buyers.

Step 4: Aadhaar e-KYC or Biometric Verification

An Aadhaar e-KYC authentication link is sent to the applicant's registered mobile. Completing it within 15 days of TRN generation activates faster officer processing. If the GST portal's risk engine flags your application for biometric verification, an appointment is scheduled at your nearest GST Seva Kendra. We brief you on exactly what documents to carry and what the officer will verify.

Step 5: ARN Generation and Officer Review

On successful submission, an Application Reference Number (ARN) is generated immediately on the portal. The assigned GST officer then has 7 working days — or 3 days for Aadhaar-authenticated applications — to approve, reject, or issue a query via Form GST REG-03. We track your ARN status daily throughout this window so you are never left wondering.

Step 6: Responding to Officer Queries

If the officer issues a Form GST REG-03 notice — typically requesting a rent agreement, a utility bill with a matching address, or a no-objection certificate from the property owner — you have 7 working days to respond via Form GST REG-04. We draft and upload the clarification within 24 hours of receiving the notice, giving the officer the complete documentation needed to approve without further delay.

Step 7: GSTIN Issuance and Post-Registration Setup

Once approved, Form GST REG-06 (your GST Registration Certificate) is available for download from the portal. We set up your GST portal login, walk you through the IMS dashboard, map your HSN/SAC codes to your invoice template, and confirm your compliance calendar. If you export goods or services, we also initiate your LUT filing so you can ship under zero-rated supply from the very first dispatch.

A Real Example: Textile Trader in Surat

Here is what the numbers actually look like for a typical first-time registrant.

• Business profile: Rajesh sells woven silk fabrics (HSN 5007) in Surat. Annual turnover: ₹65 lakh. He supplies within Gujarat and to buyers in Maharashtra and Delhi.
• Why he must register: Turnover above ₹40 lakh triggers mandatory registration. Inter-state supply to Maharashtra and Delhi is a second independent reason — no turnover minimum applies for inter-state sales.
• Tax on a typical invoice: On a ₹2,00,000 invoice to a Mumbai buyer: 5% IGST = ₹10,000. The Mumbai buyer offsets this ₹10,000 against their own output GST liability — which is precisely why registered B2B buyers refuse to work with unregistered suppliers.
• E-invoicing check: Rajesh's group turnover across two businesses linked to his PAN exceeds ₹5 crore. Every invoice he raises must carry an IRN and QR code generated from the IRP before goods leave his warehouse.
• Cost of getting it wrong: An invoice without a valid IRN is not a legal tax invoice. Rajesh's buyer cannot claim ITC, and Rajesh faces a penalty of ₹10,000 or 100% of the tax evaded — whichever is higher — under Section 122 CGST Act.

The ITC chain is the backbone of GST compliance. Every business in that chain — supplier, manufacturer, wholesaler, retailer — depends on the one before it filing correctly and on time.

After Registration: Your Compliance Calendar

Registration is the start, not the finish. Here is what your GST compliance looks like once your GSTIN is live.

• GSTR-1 (monthly or quarterly): Report all outward supply invoices. QRMP quarterly filers still upload B2B invoices monthly via the Invoice Furnishing Facility (IFF) — only B2C and nil-rated supplies go into the quarterly filing.
• GSTR-3B (monthly or quarterly): Declare net ITC, output tax, and pay the balance due. QRMP filers pay monthly using Form PMT-06 and file the summary return quarterly.
• IMS reconciliation: Each month, accept, reject, or mark as pending every inward invoice in the IMS dashboard before GSTR-2B is auto-generated. Rejected invoices cannot be claimed as ITC for that period.
• GSTR-9 annual return: Due 31 December of the following financial year. Businesses with turnover below ₹2 crore are exempt from GSTR-9C, the reconciliation statement certified by a CA or Cost Accountant.
• E-invoicing obligation: Generate an IRN for every B2B, export, and SEZ supply if your aggregate turnover exceeds ₹5 crore. An IRN is valid for 30 days from the date of generation on the IRP.
• LUT renewal: If you export goods or services without paying IGST, file Form RFD-11 (Letter of Undertaking) on the GST portal before making the first export supply of each financial year.

A GSTIN is not just a tax number — it is your business's entry point into the formal B2B economy. Every ITC chain in India runs through it.

Where It Goes Wrong

These are the eight mistakes that cause GST registration delays, rejections, and post-registration penalties — and how each one plays out.

• Wrong principal place of business address: The address on your application must match the address proof exactly — flat number, floor, building name, PIN code. Any mismatch triggers a Form REG-03 query or an in-person site visit by the GST officer.
• PAN name vs. legal entity name mismatch: 'ABC Pvt. Ltd.' on your PAN card versus 'ABC Private Limited' on your incorporation certificate causes real-time validation failure at the portal. Both must be character-for-character identical before submission.
• Wrong HSN or SAC code: Selecting a code that attracts 12% GST when your goods are actually taxed at 5% means every invoice you raise overcharges customers or generates a rate dispute downstream that your buyers will escalate.
• Missing the 30-day bank account linking deadline: Your GSTIN is auto-suspended under Rule 10A. Return filing is blocked until you file a reactivation request — and late fees continue to accrue on unfiled returns throughout the entire suspension period.
• Not filing NIL returns: Zero transactions in a month does not mean zero obligation. GSTR-1 and GSTR-3B must be filed regardless. The late fee is ₹20 per day (₹10 CGST + ₹10 SGST), capped at ₹500 per return.
• Registering in only one state when operating in multiple: Each state of business operation requires a separate GSTIN. Reporting all supplies under a single state GSTIN violates the place-of-supply rules in the IGST Act and creates ITC denial for your out-of-state buyers.
• Claiming ITC on blocked credits: Section 17(5) CGST Act restricts ITC on motor vehicles used for personal purposes, food and beverages, health insurance premiums, and construction services. New registrants frequently claim this ITC in their very first GSTR-3B.
• Voluntary registration without a compliance plan: You can register below the threshold, but every return must be filed whether or not you have transactions. Persistent missing filings attract late fees and can trigger GSTIN cancellation under Section 29 CGST Act.

What You Receive at the End

• GST Registration Certificate (Form GST REG-06) — downloadable PDF from the GST portal
• 15-digit GSTIN number for your registered state of operation
• GST portal login credentials (username and temporary password)
• HSN/SAC code mapping sheet aligned to your specific products or services
• Compliance calendar covering GSTR-1, GSTR-3B, and GSTR-9 due dates for FY 2026-27
• Guidance note on IMS dashboard usage and monthly ITC reconciliation process
• E-invoicing setup checklist and IRP registration steps (if your turnover triggers the obligation)
• LUT filing checklist and annual renewal timeline for exporters of goods or services

How to Get Started

Upload your PAN card, Aadhaar card, a recent utility bill or registered rent agreement for your business premises, and a cancelled cheque or bank passbook to our secure document portal. A GST expert reviews your documents within 2 working hours and flags any issues — name mismatches, incomplete address proof, missing authorisation letters for authorised signatories — before your application is submitted to the GST portal. This pre-check is what prevents the officer queries and resubmissions that delay most applications.

Once your documents clear, we handle the complete Part A and Part B submission, track your ARN daily, and draft responses to any officer queries within 24 hours. Your GSTIN and registration certificate are sent to you as soon as the portal approves the application — no follow-up calls or status checks required from your side.