GST Registration Forms List: REG-01 to REG-31 Explained (Complete 2026 Reference)

GST registration uses 31 distinct forms (Form GST REG-01 to REG-31), each tied to a specific stage of the registration lifecycle — application, amendment, cancellation, suspension, revocation, and TDS/TCS registration. The most-used forms are REG-01 (new application), REG-06 (registration certificate), REG-14 (amendment), and REG-29 (cancellation). Knowing which form to use saves weeks of confusion.

This is a complete reference of every GST registration form, what it's for, who files it, and the deadline. Bookmark this page if you handle GST applications regularly.

What is the registration form used for GST?

Form GST REG-01 is the application form for new GST registration. It's filed online at gst.gov.in by anyone applying for a fresh GSTIN. The form has two parts: Part A (PAN, mobile, email — generates a Temporary Reference Number or TRN), and Part B (business details, promoter information, address proof, HSN/SAC codes, bank details).

For Casual Taxable Persons and Non-Resident Taxable Persons, the form is REG-09 instead. For TDS Deductors and TCS Collectors, it's REG-07. The "registration form" terminology in everyday speech almost always refers to REG-01 unless otherwise specified.

Complete list of GST registration forms (REG-01 to REG-31)

Most-used GST registration forms explained

Form REG-01 — New registration application

The form everyone starts with. Filed online at gst.gov.in → Services → Registration → New Registration. Part A captures PAN, mobile, and email — these get OTP-verified to issue a Temporary Reference Number (TRN). Part B is the long part: business details, promoter information, principal place of business, additional places of business, HSN/SAC codes, bank details, and authorised signatory.

For step-by-step walkthrough, see our GST registration process guide.

Form REG-03 and REG-04 — Show Cause Notice and reply

REG-03 is the SCN issued by the proper officer when they want clarification before deciding on REG-01. Common triggers: address mismatch, wrong HSN, weak documents, photo issues. The taxpayer must reply via REG-04 within 7 working days. Missing the deadline = automatic rejection via REG-05.

Form REG-06 — Registration certificate

The deliverable. REG-06 is the digital certificate carrying the 15-digit GSTIN, business name, address, and QR code. Auto-generated upon approval, downloaded from Services → User Services → View/Download Certificates. Display at every place of business under Rule 18.

Form REG-09 — Casual / Non-Resident Taxable Person

Used when registering for short-term GST in a state where you don't have a fixed place of business (exhibitions, trade fairs, temporary stalls), or as a foreign supplier without an Indian establishment. Filed at least 5 days before commencing business. Validity is 90 days, extendable by another 90 via REG-11.

Form REG-14 — Amendment of registration

Used to update business details after registration is approved — change in legal name, trade name, principal place of business, additional places, partners/directors, signatories, or bank account. Core field amendments require officer approval (Form REG-15) within 15 working days. Non-core changes (additional places, bank, signatories) auto-approve immediately.

See our detailed walkthrough: how to update business details on the GST portal.

Form REG-16 — Cancellation by taxpayer

Filed when a business voluntarily wants to cancel its GSTIN — closure, business sold, turnover dropped below threshold, or change in constitution. Must be filed within 30 days of the cancellation-triggering event. Stock and capital goods ITC reversal is computed via Form GSTR-10 (final return) within 3 months of cancellation.

Form REG-21 — Revocation of cancellation

If the GST officer cancels your registration suo moto (typically for non-filing of returns over 6 months), you have 90 days from the cancellation order to file Form REG-21 requesting revocation. You must file all pending returns and pay all dues before submitting. Officer approves via Form REG-22 within 30 days.

Form REG-30 — Physical verification report

Internal officer form used after a site visit under Rule 25. The officer photographs the premises, verifies the address, and uploads the report to the portal. As an applicant, you don't file REG-30 — but its content directly determines whether your application is approved or rejected.

Form REG-31 — Suspension intimation

Issued when the officer intends to cancel registration but proceedings are still ongoing. During suspension, the taxpayer cannot make taxable supplies, cannot issue tax invoices, and cannot collect GST. Suspension lifts automatically if cancellation is dropped (Form REG-20) or revocation is approved (Form REG-22).

Other related GST forms (not in REG series)

Beyond the 31 REG forms, several other forms are part of the registration ecosystem:

Which form is used in which section of the CGST Act?

Each form maps to a specific provision of the CGST Act, 2017 and the CGST Rules, 2017:

• Section 22 (threshold-based registration) — applies via REG-01
• Section 24 (compulsory registration) — applies via REG-01
• Section 25 (procedure for registration) — REG-01, REG-02, REG-06
• Section 27 (CTP / NRTP) — REG-09, REG-11
• Section 28 (amendment) — REG-14, REG-15
• Section 29 (cancellation) — REG-16, REG-17, REG-18, REG-19, REG-20
• Section 30 (revocation) — REG-21, REG-22, REG-23, REG-24
• Section 51 / 52 (TDS / TCS) — REG-07, REG-08

How to file the right GST form (decision tree)

1. Starting fresh? → Form REG-01 (or REG-09 for CTP/NRTP, REG-07 for TDS/TCS)
2. Got an SCN? → Form REG-04 (within 7 working days)
3. Need to update business details? → Form REG-14
4. Closing the business? → Form REG-16, then GSTR-10 within 3 months
5. Officer cancelled your GSTIN? → Form REG-21 (within 90 days)
6. Validity of your CTP/NRTP expiring? → Form REG-11 (before expiry)
7. Want to opt out of Composition? → Form CMP-04
8. Merging two GSTINs / business sale? → Form ITC-02 to transfer ITC

Frequently Asked Questions

Which form is used for new GST registration?

Form GST REG-01 is the application form for new GST registration in India. It's filed online at gst.gov.in → Services → Registration → New Registration. The form has Part A (PAN, mobile, email) and Part B (business details, promoter info, place of business, HSN/SAC, bank details).

What is Form REG-06 in GST?

Form REG-06 is the GST registration certificate issued by the proper officer once the application is approved. It carries the 15-digit GSTIN, legal name, principal place of business, and a QR code. The certificate is digitally signed, doesn't expire, and must be displayed at every place of business under Rule 18.

How many GST registration forms are there?

There are 31 forms in the GST registration series (REG-01 to REG-31), covering new applications, amendments, cancellations, suspensions, revocations, TDS/TCS, and physical verification. Additional related forms include CMP series (Composition Scheme), ITC series (input tax credit transfers), and GSTR-10 (final return).

What is Form REG-14 used for?

Form REG-14 is the application for amendment of GST registration. It's used to update legal name, trade name, principal address, additional places of business, partners/directors, signatories, and bank accounts. Core field amendments require officer approval (Form REG-15) within 15 working days; non-core changes auto-approve immediately.

What's the difference between REG-01 and REG-09?

REG-01 is for resident Indian taxpayers applying for regular or composition GST. REG-09 is for Casual Taxable Persons (occasional supply in a state without fixed place of business) and Non-Resident Taxable Persons (foreign suppliers without Indian PE). REG-09 has 90-day validity and requires advance tax deposit.

How long do I have to respond to a Form REG-03 notice?

You have 7 working days from the date of REG-03 issuance to file Form REG-04 with clarification or corrected documents. Missing this deadline results in automatic rejection via Form REG-05. The 7-day period is fixed under Rule 9(2) of the CGST Rules and cannot be extended.

If filling these forms feels like a maze, our GST registration service handles REG-01, REG-04 (SCN reply), and REG-14 (amendments) — including officer follow-up. For specific situations, see our application status guide, rejection reasons, or amendment walkthrough.