The information here is compiled from official government sources, linked on each page. Government rules change often, so we can't guarantee every detail is current — always check the official source before you act.
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All India (central)✓ Source-checked 20 July 2026

GST Registration — Goods & Services Tax registration

Also known as: GSTIN, GST number, GST registration online

Registration on the GST portal that gives your business a 15-digit GSTIN. It is mandatory once turnover crosses the threshold (₹40 lakh for goods / ₹20 lakh for services in most states) and also compulsory regardless of turnover for interstate supply and selling through e-commerce operators. Government fee is zero; agents charge ₹500–3,000.

Issued by
Central Board of Indirect Taxes and Customs (CBIC) / State GST departments
Official portal
GST Portal
You get
GST Registration Certificate (Form REG-06 with 15-digit GSTIN) — Perpetual (with annual compliance)
Offline options
GST Seva Kendras, Common Service Centres (CSC)

Who can apply

  • Registration is mandatory once aggregate turnover (all-India, same PAN) crosses ₹40 lakh for a supplier of goods or ₹20 lakh for a supplier of services in most states; special-category states have lower limits (₹20 lakh / ₹10 lakh)
  • Interstate supply of goods requires registration irrespective of turnover (a turnover-based exemption exists for interstate supply of certain services — confirm your case)
  • Persons required to collect/pay tax through an e-commerce operator, and e-commerce operators themselves, must register irrespective of turnover
  • You may register voluntarily below the threshold to claim input tax credit or to onboard to platforms/B2B customers that require a GSTIN

What it costs

Government feeGST registration is free on the government portal. Professional/agent charges of ₹500–3,000 are for assistance, not a government fee.Free

How long it takes

Typically 7–30 days.

Central process governed by the CGST Rules; timelines depend on Aadhaar authentication and whether physical verification is triggered.

The full step-by-step guide

What's inside for this procedure:

  • 6 steps in exact order, with the official link at each one
  • 6 documents — accepted alternatives, exact upload sizes
  • 5 common reasons applications get rejected, and how to avoid each
  • A 3-question intake that prunes the checklist to your situation
  • Progress tracking with your deadlines, notes, and application numbers
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Common questions

When is GST registration mandatory?

Once aggregate turnover crosses ₹40 lakh (goods) or ₹20 lakh (services) in most states, and irrespective of turnover for interstate supply of goods and for selling through e-commerce operators. Special-category states have lower thresholds.

I run a small restaurant selling only on Swiggy/Zomato — do I need GST?

Selling through an e-commerce operator generally requires GST registration regardless of turnover. The tax treatment for restaurant supplies via e-commerce is specific — confirm your exact obligation with the portal or a professional.

How much does GST registration cost?

The government fee is zero. Professionals charge ₹500–3,000 for handling the application; the portal itself is free.

What is the Composition Scheme?

A simplified scheme for small taxpayers (including certain restaurants) with a flat lower rate and quarterly payment, but no input tax credit and restrictions on interstate and e-commerce supply. Eligibility is turnover-capped — confirm current limits before opting in.

Part of a bigger goal

After you get this: staying compliant

Would you rather have someone do this for you?

The guide above covers the full procedure. If you would prefer professional help, let us know — assisted filing is on the way, and this helps us decide which services and cities come first.

We record the service, the state and the first 3 digits of your pincode — enough to see which areas need help, not enough to identify you. No name, no phone number.

Where this comes from

This guide is put together from the official government sources listed below. We last reviewed it on 20 July 2026. Government rules and fees change often, and official websites are sometimes incomplete or unclear, so we cannot promise every detail is current. We make every effort to keep this updated, but there is no guarantee. Always check the official source linked below before you act or pay.

Recent changes

  • 20 July 2026 — Re-voiced steps to the action-first step-writing standard (docs/STEP-WRITING-STANDARD.md): second-person imperative, action first, who-you-need surfaced; all facts, citations, fees and references preserved.
  • 14 July 2026 — Initial authoring: GST registration flow (Part A/B, Aadhaar authentication, REG-06), thresholds ₹40L goods/₹20L services, interstate and e-commerce compulsory triggers, composition scheme note. Thresholds, timelines and restaurant-via-e-commerce treatment flagged for verification against the GST portal / CBIC.

Official sources for this guide

KaamKar is an independent guide, not a government website. Apply only on the official portal linked above. Content prepared to published requirements — no outcomes are guaranteed.