How to Reply REG-03 Notice | GST Registration Query Reply Format 2026

What is REG-03 Notice?

REG-03 is a notice issued under Rule 9 of the CGST Rules, 2017 when a GST officer needs additional information, clarification, or documents to process your registration application or amendment request. It is not a demand or penalty notice — it simply means your application needs more supporting evidence before it can be approved.

The officer typically sends REG-03 when they notice issues like:

Incomplete or unclear proof of principal place of business
Utility bill or ownership document that doesn't match the declared address
Missing or inconsistent constitution documents (partnership deed, MOA/AOA)
Photograph or premises verification requirement
Bank account details that need further proof

📋 Key Facts About REG-03

Parameter	Details
Legal Basis	Rule 9, CGST Rules 2017
Issued By	GST Registration Officer
Reply Format	FORM GST REG-04 (filed on GST portal)
Reply Deadline	7 working days from notice date
Reply Portal	GST Portal → Services → Registration → Application for Filing Clarifications
Consequence of No Reply	Application rejected in FORM GST REG-05

How to Reply REG-03 — Step by Step

Read the query carefully

REG-03 will specify exactly what document or clarification the officer wants. It could relate to your business address, constitution, or bank details. Note it precisely before drafting your response.

Gather the requested documents

Depending on the query, collect: rent agreement or ownership proof for principal place of business, a utility bill not older than 2 months, PAN and Aadhaar, constitution document, and bank statement or cancelled cheque.

Draft your clarification citing Rule 9

Write a formal reply addressing the exact query raised, citing Rule 9 of the CGST Rules 2017, and referencing each document you're attaching.

Submit FORM REG-04 within 7 working days

File your clarification through GST Portal → Services → Registration → Application for Filing Clarifications, upload the supporting documents, and submit within the 7-working-day window.

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Key Legal Provisions for REG-03 Reply

Section 25, CGST Act 2017 — Procedure for registration
Section 26, CGST Act 2017 — Deemed registration
Rule 8, CGST Rules 2017 — Application for registration
Rule 9, CGST Rules 2017 — Verification and grant of registration (basis for REG-03)
Rule 19, CGST Rules 2017 — Amendment of registration

Frequently Asked Questions — REG-03

What is REG-03 notice in GST?

REG-03 is a notice seeking clarification, information, or additional documents issued by the GST officer while processing a new registration application or an amendment application, under Rule 9 of the CGST Rules 2017.

How many days to reply to REG-03?

You must reply within 7 working days from the date of the REG-03 notice, by filing FORM GST REG-04 on the GST portal.

What is FORM REG-04?

FORM GST REG-04 is the official clarification/reply format used to respond to a REG-03 notice. It is filed on the GST portal along with the requested supporting documents.

What happens if I don't reply to REG-03 in time?

If you fail to respond within 7 working days, or if your reply is unsatisfactory, the officer can reject your registration or amendment application in FORM GST REG-05.

REG-03 kya hota hai? (Hindi)

REG-03 ek notice hai jo GST officer registration ya amendment application process karte samay bhejta hai jab unhe additional documents ya clarification chahiye hoti hai. Iska jawab 7 working days mein FORM REG-04 mein dena hota hai.

How to Reply REG-03 GST Registration Query — 2026 Guide