GST Registration Process in India — Complete Step-by-Step Guide

GST registration is one of those things that's simple once you know exactly what triggers it and what the filing actually involves — here's the process end to end.

Who needs to register

Registration is generally mandatory once your turnover crosses ₹40 lakh for goods or ₹20 lakh for services (lower thresholds apply in special category states). But turnover isn't the only trigger — anyone selling through an e-commerce platform, or making inter-state taxable supplies, typically needs to register regardless of turnover.

Step 1: Confirm the Right Registration Type

Most businesses register under the regular scheme, but small businesses under a turnover threshold may qualify for the simplified Composition Scheme instead — lower fixed rates, but no input tax credit and quarterly rather than monthly filing. It's worth checking eligibility before you file.

Step 2: File Form GST REG-01

The application is filed on the GST portal with your business details, registered address, bank account information, and the correct HSN (goods) or SAC (services) codes for what you actually sell or provide.

Step 3: ARN Generated & Verification

An Application Reference Number (ARN) is issued instantly on submission. If the officer reviewing your application needs clarification — a common trigger is an address proof that doesn't clearly match the business name — you'll get a query, and a prompt response usually avoids rejection.

Step 4: GSTIN Issued

Once approved, your GST certificate and GSTIN are issued — usually within 7 working days if there are no complications.

Documents you'll need

• PAN and photograph of the proprietor, partners or directors
• Business address proof (electricity bill, rent agreement or NOC)
• A bank account statement or a cancelled cheque
• Business constitution proof — partnership deed, or the LLP/company Certificate of Incorporation
• Digital Signature Certificate (mandatory for companies and LLPs)

After registration

Getting the GSTIN is really the start, not the end — your first GSTR-1 (outward supplies) and GSTR-3B (summary return and tax payment) filings come due on a monthly or quarterly cycle depending on your turnover and scheme, so it's worth setting up a routine for this from day one rather than treating each filing as a fire drill.