REG-17 is a Show Cause Notice for cancellation of GST registration, issued by the proper officer when they have reason to believe your registration should be cancelled. Common reasons include non-filing of returns for 6+ consecutive months, business found not operating at the registered address, or registration obtained by fraud or misrepresentation. After REG-17, if your reply is unsatisfactory, the officer cancels the registration via REG-19.
Common Triggers — Why You May Have Received This
Non-filing of GSTR-3B for 6 or more consecutive months
Non-filing of GSTR-4 (composition) for 3 consecutive tax periods
Business not found at registered address during physical verification
Registration obtained through fraud or misrepresentation
ITC fraudulently availed
E-way bill violations or fake invoice detected
How to Respond — Step by Step
Response form: REG-18 | Deadline: 7 days
1
Act immediately — 7-day deadline
Login to portal → Services → Registration → View/Download Certificates → REG-17. Read the specific reason cited.
2
File all pending returns
If the reason is non-filing, file all pending GSTR-3B returns immediately before or alongside your REG-18 response. Attach filing confirmation as proof.
3
File REG-18 with explanation
Navigate to Services → Registration → Application for Revocation → or respond through the notice portal. In REG-18, explain why your registration should NOT be cancelled. Attach proof of business continuity, filed returns, address documents.
4
Attend hearing if called
The officer may schedule a hearing. Attend with all documents demonstrating business operations.
5
Track REG-19 or REG-20
If satisfied: officer drops proceedings. If not satisfied: REG-19 (cancellation order) is issued. You then have 30 days to apply for revocation using REG-21.
Penalty Implications
⚠️ Cancellation of registration means you can no longer collect GST or claim ITC. You must file GSTR-10 (final return) within 3 months. If operating after cancellation, penalty under Section 122 applies. All pending ITC in the credit ledger is forfeited.
Expert Tips
File all pending returns immediately — this is the most effective response to a non-filing based REG-17.
If the reason is address-related, provide updated address proof with photographs of the business premises.
Even if you want to cancel voluntarily, apply in REG-16 rather than letting REG-17 proceed — voluntary cancellation gives you more control.
After filing REG-18, follow up weekly on the portal — officers have been known to proceed with cancellation without further notice if REG-18 is not seen.
Calculate your penalty or interest if you missed a deadline:
REG-17 is the notice (show cause) giving you an opportunity to explain. REG-19 is the final cancellation order passed after considering your reply. If you receive REG-17, you still have time to save your registration by filing REG-18.
If the cancellation was officer-initiated (not voluntary), apply for revocation in Form REG-21 within 90 days of the REG-19 order. File all pending returns first — the portal will not allow REG-21 without clearing the return backlog.
All ITC in the electronic credit ledger lapses upon cancellation. You must reverse ITC on closing stock in GSTR-10. There is no refund of the lapsed ITC.
