Thresholds, documents, timelines, penalties and Aadhaar e-KYC — everything a founder, freelancer or e-commerce seller needs to know before applying for GSTIN.
Goods and Services Tax (GST) registration is no longer optional for most Indian businesses. Whether you sell on Amazon, invoice foreign clients, run a growing service practice, or import goods — your GSTIN is the operating licence that unlocks tax invoicing, Input Tax Credit (ITC), marketplace access and bankable credibility. This guide walks you through every requirement, threshold, document, deadline and penalty as they stand in 2026. If you would rather hand it over, our GST registration service files the application and handles clarifications for you.
Eight years after rollout, GST has matured into the single source of truth for revenue, expenses and credit. Banks pull your GSTR-3B to approve working capital. Marketplaces require it before listing. Foreign clients ask for it on every invoice. And the tax department uses your filings — not your books — as the starting point for any scrutiny. Treating GST as 'just another tax' is the single most expensive mistake a founder can make.
| Category | Regular states | Special category states |
|---|---|---|
| Supply of goods | ₹40 lakh | ₹20 lakh |
| Supply of services | ₹20 lakh | ₹10 lakh |
| Mixed (goods + services) | ₹20 lakh | ₹10 lakh |
| Inter-state supply of goods | ₹0 (mandatory) | ₹0 (mandatory) |
| E-commerce supply | ₹0 (mandatory) | ₹0 (mandatory) |
Aggregate turnover includes taxable, exempt, exports and inter-state supplies of all persons under the same PAN — across India. Don't compute it state-wise.
| Application path | Typical turnaround |
|---|---|
| Aadhaar e-KYC, clean documents | 3–4 working days |
| Without Aadhaar (physical verification) | 7–15 working days |
| With REG-03 clarification notice | + 7 days per clarification cycle |
| Casual / non-resident | 5–7 working days (advance tax required) |
If your turnover is under ₹1.5 Cr (₹75L for services) and you sell mostly B2C, the Composition scheme offers a flat 1% (traders), 5% (restaurants) or 6% (services) tax with quarterly returns and no ITC. Below most consumer-facing businesses cross over to Regular only when B2B clients demand a tax invoice with ITC.
| Parameter | Regular GST | Composition |
|---|---|---|
| Turnover limit | No upper cap | ₹1.5 Cr (goods) / ₹75L (services) |
| Tax rate | 5%–28% on output | 1% / 5% / 6% flat |
| Input Tax Credit | Yes | No |
| Inter-state supply | Allowed | Not allowed |
| Returns | Monthly / quarterly | Quarterly CMP-08 + annual GSTR-4 |
| Tax invoice | Yes | Bill of supply only |
If you've operated past the threshold without registering, do NOT register fresh and ignore the past. Voluntary disclosure with back-dated invoices and tax payment costs far less than a department-initiated demand.
Add your GSTIN to your invoice template, email signature, website footer and Google Business Profile the same day it's issued. It boosts buyer trust and pre-empts the 'are you GST registered?' question.
Yes — and it's often the right move. Voluntary registration lets you claim ITC, raise tax invoices, list on marketplaces and look enterprise-ready to clients. The trade-off is mandatory monthly filings even at zero turnover.
One GSTIN per state where you have a 'fixed establishment' or supply from. Same PAN, different GSTINs. From 2026, a single business can also opt for separate GSTINs across verticals within the same state.
Yes — the government charges nothing. Professional fees for end-to-end filing (document review, application, REG-03 reply, certificate handover) typically range from ₹999 to ₹2,499 depending on entity type.
Yes, via Form REG-16. The officer reviews pending liabilities and ITC reversal under Rule 44. Plan for 30–60 days end to end.
Once your GSTIN is live, the real work begins — monthly filings, reconciliation and ITC discipline. Read our follow-ups on GSTR-1 vs GSTR-3B, the five ITC mistakes quietly killing margins, and the composition vs regular decision in depth. If you want a senior CA to map this for your business in a 15-minute call, we're a WhatsApp message away.
Senior contributor at Taxpex Consultancy. Reviewed by a practising Chartered Accountant. Published on 12 May 2026 · Updated on 12 May 2026.
Get your GSTIN issued in 3–7 working days — pan-India, fully online, with Aadhaar e-KYC support.
Monthly and annual GST returns — GSTR-1, GSTR-3B, GSTR-9 — filed accurately with full ITC reconciliation.
Modern accounting for smart businesses — organised books, MIS reports and clarity on every financial decision.
GST — done for you by Taxpex
Prefer a CA to handle this end to end? GST Registration is our dedicated, fixed-fee service — this guide explains the process, that page gets it filed.
Go to GST RegistrationEnd-to-end GST registration for proprietors, partnerships, LLPs and Pvt Ltd companies — CA-reviewed, error-free, and delivered with a complete post-registration handover.
Mismatched 2B, blocked credits under 17(5), late reconciliation — the costly ITC errors we see most often and how to stop them this quarter.
2 May 2026 · 12 minDifference between GSTR-1 and GSTR-3B, their monthly and quarterly due dates, and how to reconcile both with GSTR-2B before filing to avoid ITC loss and ASMT-10 notices.
18 April 2026 · 10 min1% flat tax sounds great until you realise you lose all ITC. Here's the numerical framework to decide which scheme actually leaves more cash in the business.
Yes. You must know the applicable rate to correctly extract the GST component.
via Reverse GST CalculatorEMI is computed using the standard reducing-balance formula: EMI = P × r × (1+r)^N / ((1+r)^N − 1), where P is the principal, r the monthly interest rate and N the tenure in months.
via EMI CalculatorNo. Processing fees, insurance, GST on fees and stamp duty are excluded and vary per lender. Add them separately to arrive at the true cost of the loan.
via EMI CalculatorEMI is computed using the standard reducing-balance formula: EMI = P × r × (1+r)^N / ((1+r)^N − 1), where P is the principal, r the monthly interest rate and N the tenure in months.
via Personal Loan Calculator