REG-03 is a Notice of Deficiency or Clarification issued during the GST registration process. When you apply for GST registration in Form REG-01, the application is processed by the GST officer. If the officer finds the documents incomplete, the address proof insufficient, the nature of business unclear, or has any other query, they issue REG-03 requesting clarification or additional documents. You have 7 working days to respond.
Common Triggers — Why You May Have Received This
Address proof does not match the address in the application
Property ownership/tenancy documents are missing or insufficient
Nature of business or HSN codes are unclear or inconsistent
PAN details do not match GST portal data
The applicant is a non-resident and additional details are needed
Place of business appears residential — NOC from owner required
How to Respond — Step by Step
Response form: REG-04 | Deadline: 7 days
1
Login to GST portal
Go to gst.gov.in → Services → Registration → Application Status. You will see the REG-03 notice against your ARN (Application Reference Number).
2
Read the notice carefully
Note exactly what the officer is asking for — specific documents, clarification on a field, or additional proof. Prepare a targeted response.
3
Prepare response and documents
Gather the requested documents: updated address proof (electricity bill, lease deed, NOC), PAN card, bank statement, photograph of premises, etc.
4
File Form REG-04
Click "Respond to Notice" on the portal. Fill REG-04 with your explanation and upload all documents. Submit using OTP or DSC.
5
Track the response
After REG-04, the officer either approves the registration (REG-06 issued) or rejects it (REG-05 with reasons). If rejected, you can file a fresh application.
Penalty Implications
⚠️ There is no direct penalty for REG-03. However, failure to respond within 7 working days results in the application being deemed abandoned or rejected. You would then need to file a fresh GST registration application from scratch.
Expert Tips
Respond within 7 working days — this is a hard deadline.
If the notice asks for address proof, provide both the property ownership document AND a utility bill dated within the last 3 months.
For shared premises (co-working space or family property), always include a NOC from the property owner along with their ID proof.
Photograph the exterior of the premises with your business name visible — this significantly reduces queries.
Calculate your penalty or interest if you missed a deadline:
The officer issues Form REG-05 (rejection order) with reasons. You can file a fresh REG-01 application addressing the issues. Alternatively, file an appeal against the rejection before the Appellate Authority.
No. Your GST registration is not active until REG-06 is issued. Conducting business without a valid GSTIN when registration is pending is risky and may attract penalty under Section 122.
No. REG-03 is issued only if the officer has a query. If all documents are complete and the application is straightforward, REG-06 (registration certificate) may be issued directly within 3-7 working days without REG-03.
