Everything you need to register for GST in India, in one place. Check whether you must register and at what turnover, get the exact documents for your business type, find your state code and jurisdiction, and see the returns you’ll file afterwards — each backed by a free, CA-built tool. Current for FY 2025-26, after GST 2.0.
Start here — the GST registration tools
GST Registration Threshold Checker
Do you need to register? Pick your state and supply type to see your Rs. 40 / 20 / 10 lakh limit and the Section 24 triggers that require registration from the first rupee.
Open the tool →GST State Code & Jurisdiction Finder
Your two-digit GST state code, a GSTIN decoder with check-digit validation, and how to find your central and state jurisdiction.
Open the tool →GST Registration Documents Checklist
The exact documents for your business type and premises — proprietor, partnership, LLP, company, HUF or trust — as a printable checklist.
Open the tool →GST Return Due Date & Applicability
After you register: which returns you file (GSTR-1, 3B, CMP-08, 9/9C), their frequency, and your next due date.
Open the tool →Do you need to register?
GST registration becomes compulsory once your aggregate turnover crosses your state threshold — broadly Rs. 40 lakh for a supplier of goods and Rs. 20 lakh for services, with Rs. 20 lakh / Rs. 10 lakh limits in certain states. Separately, Section 24 requires registration from the very first rupee for inter-state supply of goods, reverse-charge liability, e-commerce sellers, casual and non-resident taxable persons, input service distributors and TDS/TCS deductors. Aggregate turnover is computed all-India on one PAN.
Check your exact position with the threshold checker.
How to register — the process
- Create a Temporary Reference Number (TRN). On the GST portal, Registration → New Registration (Part A): enter PAN, mobile and email, verify by OTP, and get a TRN.
- Fill Part B of Form REG-01. Log in with the TRN and complete business details, promoters / partners / directors, the authorised signatory, principal (and additional) place of business, top goods and services with HSN / SAC, and bank details.
- Verify and submit. Submit with a DSC (mandatory for a company and LLP) or with Aadhaar OTP (EVC). Aadhaar authentication of the primary signatory and one promoter speeds up approval.
- Get your ARN, then the GSTIN. You receive an Application Reference Number (ARN) to track the application. On approval the officer issues registration certificate REG-06 with your 15-digit GSTIN.
There is no government fee. Before you start, get your documents ready for your business type. Bank details are not needed up front — you can add them within 30 days of registration (Rule 10A).
Your GST state code & jurisdiction
Every GSTIN begins with a two-digit state code (Maharashtra 27, Karnataka 29, Delhi 07, and so on), and every registration is allocated to a central or state jurisdiction. Look up your code, decode any GSTIN, and find your ward, circle and commissionerate with the state code & jurisdiction finder.
After you register — your returns
Once registered you must issue GST-compliant invoices and file returns — monthly or quarterly GSTR-1 and GSTR-3B for a regular taxpayer (QRMP if turnover is up to Rs. 5 crore), or CMP-08 and GSTR-4 for a composition taxpayer, plus the annual GSTR-9 / 9C where applicable. See exactly what you file and when with the return due-date finder.
GST registration in your state
The threshold, state code and jurisdiction differ by state, and several state registrations (professional tax, shops & establishment) go hand in hand with GST. Detailed state-by-state GST registration guides are being published for every state and UT below.
Guides roll out state by state; meanwhile the tools above already give you your state’s threshold, code and jurisdiction. Check your state’s threshold →
Frequently asked questions
Who needs GST registration?
Anyone whose aggregate turnover crosses the state threshold (Rs. 40 lakh for goods, Rs. 20 lakh for services, lower in some states), and anyone covered by Section 24 — inter-state supply of goods, reverse-charge liability, e-commerce sellers, casual or non-resident taxable persons, and others — who must register from the first rupee. Use the threshold checker above to see your position.
Is GST registration free, and how long does it take?
There is no government fee. With Aadhaar authentication and clean documents, registration is usually granted within about 7 working days; without Aadhaar authentication, or if physical verification is triggered, it can take up to 30 days.
Do I need a separate registration for each state?
Yes. GST registration is state-wise — you register in every state from which you make taxable supplies, and each registration has its own GSTIN beginning with that state’s code. A single business operating in several states holds several GSTINs on the same PAN.
Can I register voluntarily below the threshold?
Yes. Voluntary registration lets you collect GST and claim input tax credit, which suits businesses selling to registered buyers. Once registered you must file returns and comply like any regular taxpayer, even below the threshold.
What is the difference between GSTIN and GST registration?
GST registration is the approval to operate under GST; the GSTIN is the 15-digit identifier issued on that registration (state code + PAN + entity code + check digit). Decode any GSTIN with the state-code finder above.
What must I do after registering?
Display your GSTIN at your place of business, issue GST-compliant invoices, and file the returns applicable to you — GSTR-1 and GSTR-3B (or quarterly under QRMP), or CMP-08 and GSTR-4 for composition. The return finder above lists your returns and due dates.
Related GST tools & guides
Free CA-built resource, current for FY 2025-26 (post GST 2.0). Thresholds, the REG-01 process, Rule 10A bank details, jurisdiction allocation and return due dates follow the CGST Act and Rules and the GST portal; confirm your specific position before filing.