Who actually needs to register
The headline thresholds are ₹40 lakh in aggregate annual turnover for a supplier of goods and ₹20 lakh for a supplier of services (lower in special category states), but several categories of business have to register regardless of turnover: anyone making inter-state taxable supplies, anyone selling through an e-commerce operator, casual taxable persons, and businesses liable to pay tax under reverse charge, among others. Turnover alone is a starting point, not the full test.
What the application actually needs
Registration is filed as Form GST REG-01 on the GST portal, and generally needs: PAN of the business and its promoters, proof of the principal place of business (a utility bill, property tax receipt, or rent agreement plus a no-objection letter from the owner), identity and address proof of the promoters/partners/directors, bank account details, and — for a company or LLP — its incorporation certificate and authorization for the person signing the application.
Regular scheme or composition scheme
A business below the composition scheme's turnover threshold can opt in: a lower fixed tax rate on turnover, quarterly returns instead of monthly, but no input tax credit and no ability to make inter-state supplies. It suits a small business selling mainly to end consumers. It suits a business selling to other GST-registered companies badly, because those customers generally want to claim input tax credit on what they buy — something a composition dealer can't pass on.
What happens after registration is granted
This is the part that catches people out: registration isn't the finish line, it's the start of a recurring obligation. GSTR-1 (outward supply details) and GSTR-3B (the summary return with tax payment) fall due monthly for most registered businesses, or quarterly under the QRMP scheme for smaller taxpayers who opt in. Missing a return doesn't just draw a late fee — it can also block the recipient's ability to claim input tax credit on purchases from that supplier, which tends to surface as a much more urgent phone call than the late fee itself.
Where registrations get delayed
- Address proof that doesn't match the exact name and details declared in the application.
- Registering under the wrong scheme for the actual customer base — composition dealers who mostly serve GST-registered businesses tend to lose those customers.
- Assuming one registration covers every state the business ships to, rather than every state it has a genuine place of business in.
- Treating the GSTIN as the end of the process, rather than the start of a monthly filing rhythm.
Frequently asked
Can I voluntarily register for GST even if I'm below the threshold?
Yes, and businesses often do — voluntary registration lets a business claim input tax credit on its purchases and issue GST-compliant invoices, which some larger customers require before they'll even place an order. The tradeoff is taking on the full return-filing obligation regardless of turnover.
How long does GST registration actually take?
Typically 3 to 7 working days from a complete application, via the GST REG-01 form on the GST portal, though it can extend if the officer raises a clarification query — usually triggered by an address-proof or photograph mismatch rather than anything substantive.
What is composition scheme registration?
An alternative for small taxpayers below a turnover threshold, who pay GST at a lower fixed rate on turnover instead of the standard rate structure, in exchange for simpler quarterly filing and no input tax credit. It suits a small business selling mostly to end consumers, and suits a business selling to other GST-registered companies much less well, since it can't pass on input tax credit.
Do I need a separate GST registration for each state I operate in?
Yes — GST registration is state-specific. A business with a genuine place of business in more than one state (an office, warehouse, or branch, not just occasional sales into that state) needs a separate GSTIN for each state it operates from.