For a large company, a GST notice goes to an in-house tax team. For a small business, it usually lands on the owner — often forwarded by an accountant who handles the filings but not the disputes, and frequently discovered days after it was issued.
The good news is that most notices sent to small businesses are routine, arise from mismatches rather than allegations of fraud, and can be closed with a properly drafted reply. The bad news is that the deadlines are short, and ignoring one can suspend your registration or block your ability to file.
This guide walks through the notices small businesses actually receive, what each one means, and how to respond. It reflects what we see day to day, providing GST notice reply handling services that Delhi NCR businesses come to us for.
The form number tells you everything — what triggered it, what you must file, and how long you have.
| Form | What triggered it | Reply in | Time allowed |
| GSTR-3A | Returns not filed | File the pending returns | 15 days |
| ASMT-10 | Discrepancy found on scrutiny of returns | ASMT-11 | As stated, commonly 30 days |
| DRC-01B | GSTR-1 liability exceeds GSTR-3B | Part B of DRC-01B, or pay via DRC-03 | 7 days |
| DRC-01C | ITC claimed in GSTR-3B exceeds GSTR-2B | Part B of DRC-01C, or pay via DRC-03 | 7 days |
| DRC-01A | Pre-notice intimation of tax ascertained | Part B of DRC-01A | As stated |
| DRC-01 | Show cause notice raising a demand | DRC-06 | As stated in the notice |
| REG-03 | Query on registration or amendment | REG-04 | 7 working days |
| REG-17 | Show cause for cancellation of registration | REG-18 | 7 working days |
| RFD-08 | Proposed rejection of a refund claim | RFD-09 | 15 days |
| ADT-01 | Departmental audit under Section 65 | Produce records | Per the notice |
Check the “Additional Notices and Orders” tab on the portal, not just the main notices tab. A large number of notices are uploaded there, and businesses routinely miss them.
DRC-01B is issued when the liability declared in your GSTR-1 exceeds what you paid in GSTR-3B. DRC-01C is issued when the input tax credit you claimed in GSTR-3B exceeds what appears in your GSTR-2B.
Both give you seven days. Both require you to either pay the difference with interest through DRC-03 or explain it in Part B of the form. And critically, if you do neither, your GSTR-1 for the next period can be blocked — which means you cannot invoice compliantly, your customers cannot claim credit, and your cash flow stops within weeks.
For a small business, that consequence is far more damaging than the tax amount in dispute. These two forms should never be left unanswered.
Do not begin drafting before step four. A reply written without reconciling the numbers usually creates more problems than it solves.
A reply that works has four features. It answers each point separately rather than in a general narrative. It attaches evidence for every assertion — reconciliation statements, invoices, ledger extracts, bank proofs — clearly labelled and referenced. It explains differences rather than denying them, because most mismatches have an innocent cause such as timing, an amendment in a later period, or import or reverse charge credit that does not appear in GSTR-2B. And it requests a personal hearing where the amount is significant.
Where part of the demand is correct, paying that portion through DRC-03 and saying so narrows the dispute and reduces penalty exposure.
You still have options. An ex parte order can be challenged in appeal within three months of communication, with one further month condonable on sufficient cause, subject to a pre-deposit of 10% of the disputed tax. Where a registration has been cancelled for non-filing, revocation can be sought once pending returns, tax, interest, and late fees are cleared. And where a notice was never effectively served, that itself can be raised.
Acting late is harder and costlier than acting on time — but it is rarely hopeless.
Our GST notice reply handling services Delhi NCR businesses use are built for exactly this situation, and we work with clients across Delhi, Gurugram, Noida, Faridabad, and Ghaziabad:
If you have a DRC-01B or DRC-01C, you may have days rather than weeks. Call +91-9667793597, email info@gstcomplianceexperts.in, or message us on WhatsApp now.

