GST Notice: Types, Reasons, Reply Process and Important Deadlines

Receiving a GST notice can be worrying, especially when the taxpayer is not sure why it was issued or how to respond. A notice does not always mean that the taxpayer has committed fraud or must immediately pay a large amount. In many cases, the department asks for clarification, missing information, reconciliation or supporting documents.

A taxpayer should read the notice carefully, identify the legal provision and respond within the stated time. Ignoring a GST notice can lead to an adverse order, cancellation of registration, recovery proceedings, interest, late fee or penalty.

This guide explains common GST notices, why they are issued, how to view them on the GST Portal, how to prepare a reply and what records should be maintained.

What is a GST notice?

A GST notice is an official communication issued by a proper officer or the GST system to a taxpayer or another person. It may request information, ask for clarification, communicate a proposed tax liability or provide an opportunity to explain a compliance issue.

The notice normally contains the taxpayer’s GSTIN or reference number, the relevant tax period, the legal provision, the reason for communication, the proposed action and the time allowed for responding.

Some communications are generated automatically by the GST Portal, while others are issued after scrutiny, verification, investigation or proceedings by the proper officer.

Does every GST notice mean a penalty?

No. Different notices have different purposes. A notice may ask the taxpayer to explain a return mismatch, file a pending return, submit documents, respond to a proposed cancellation or pay an amount that has already been accepted.

A show-cause notice gives the taxpayer an opportunity to respond before an adverse order is passed. The taxpayer should not treat every communication as a final demand. First identify whether it is an intimation, notice, order, demand or reminder.

Where can a GST notice be viewed?

Most GST communications can be viewed through the official GST Portal. The exact menu may vary according to the type of notice and the portal functionality available for the taxpayer.

1. Open the official GST Portal.

2. Log in using the authorised credentials.

3. Open Services or the taxpayer dashboard.

4. Look for notices, orders, additional notices or case-related services.

5. Open the relevant reference number.

6. Download the notice, annexures and supporting documents.

7. Note the reply due date and the available response option.

Taxpayers should also check the registered email address and mobile number. A portal communication may be accompanied by an email or SMS, but the taxpayer should rely on the notice available in the official account and verify its reference number.

Common types of GST notices

The form number gives an initial indication of the purpose of the communication. However, the actual facts and wording must always be read carefully.

GSTR-3A notice for non-filing

GSTR-3A is generally issued when a taxpayer fails to furnish a required return. It is a notice asking the taxpayer to file the pending return or explain the reason for non-filing.

The taxpayer should check which return is pending, whether tax is payable and whether any late fee or interest has accumulated. Filing the return after receiving the notice may not remove all consequences, but it can help prevent further action where the law permits.

ASMT-10 scrutiny notice

ASMT-10 is used in the scrutiny of returns. The officer may identify a discrepancy in the return, such as a difference between outward supplies, input tax credit, tax payment or other reported information.

The taxpayer can accept the discrepancy and pay the applicable amount, correct the issue through the permitted process or submit an explanation with supporting documents. The response should address every point mentioned in the notice rather than provide a general statement.

REG-17 registration cancellation notice

REG-17 is a show-cause notice proposing cancellation or suspension of GST registration. It may be issued for reasons such as non-filing of returns, incorrect registration information, business closure, violation of the law or other grounds specified by the proper officer.

The taxpayer should reply within the stated period and attach evidence that the business is operating, returns have been filed, documents are correct or the alleged issue has been resolved. If the business has actually closed, the taxpayer should follow the proper cancellation procedure instead of submitting an inaccurate explanation.

DRC-01 show-cause notice summary

DRC-01 generally communicates the summary of a show-cause notice relating to tax, interest and penalty proceedings. The underlying notice may explain the facts, legal provisions, calculation and proposed demand.

The taxpayer should examine the period, tax head, section, tax calculation, interest and penalty separately. A reply may accept some issues and dispute others if the facts support that position.

DRC-01A pre-notice intimation

DRC-01A may be used to communicate tax ascertained as payable before a formal demand notice in the applicable proceedings. The taxpayer may submit a response or pay the amount if the liability is accepted.

Payment should not be made blindly. Check whether the amount relates to the correct GSTIN, financial year, tax period, tax head and legal provision.

Other communications

A taxpayer may receive other forms, reminders, orders, deficiency memos and information requests. Examples include communications relating to refund claims, registration amendments, revocation, audit, assessment, inspection, input tax credit differences and annual return reconciliation.

The form number alone is not enough. The taxpayer should read the notice, attachments and portal instructions together.

Why is a GST notice issued?

A GST notice may arise from a difference between the information reported by the taxpayer and information available to the department. Common reasons include:

• Non-filing or late filing of a GST return

• Difference between GSTR-1 and GSTR-3B

• Difference between books and returns

• Excess or ineligible input tax credit

• Mismatch between purchase records and supplier-reported data

• Unpaid tax, interest or late fee

• Incorrect GSTIN or place-of-supply information

• Incorrect tax type, such as IGST instead of CGST and SGST

• Unreported outward supplies

• Incorrect treatment of exempt, nil-rated or non-GST supplies

• Reverse-charge liability not reported

• Unusual refund or credit claims

• Failure to respond to an earlier communication

• Incorrect business address or registration information

• Business activity not matching the registration details

• Audit or investigation findings

Difference between a notice, order and demand

The response strategy depends on the nature of the communication. A reply to an intimation may be different from an appeal against a final order.

First steps after receiving a GST notice

1. Download the complete notice and every annexure.

2. Record the date on which the notice was received.

3. Note the reply deadline and hearing date, if any.

4. Check the GSTIN, legal name and tax period.

5. Identify the section and form number.

6. Read the calculation of tax, interest and penalty.

7. Compare the notice with books, returns and payment records.

8. Prepare a list of issues requiring clarification.

9. Collect supporting invoices and documents.

10. Decide whether to accept, partially accept or dispute the issue.

Do not wait until the final day to begin collecting records. Some notices require information from suppliers, customers, banks or transporters, and obtaining that information may take time.

How to prepare a reply

A good reply is clear, specific and supported by evidence. It should not contain unnecessary allegations or emotional language. The officer should be able to understand the transaction and the taxpayer’s position from the reply.

A practical structure is:

1. Notice reference number and date

2. GSTIN and legal name of the taxpayer

3. Relevant financial year and tax period

4. Short summary of the issue

5. Point-wise response to each allegation or discrepancy

6. Relevant legal explanation

7. Calculation or reconciliation statement

8. List of attached documents

9. Clear request for acceptance or closure

10. Authorised signatory details and declaration

For example, if a notice alleges excess ITC of ₹1,20,000, the reply should not merely say “the credit is correct.” It should provide invoice-wise details, explain the difference and show why each invoice satisfies the legal conditions.

Documents commonly used in a reply

• Sales and purchase registers

• Tax invoices and debit notes

• Credit notes and proof of purchase returns

• Filed GSTR-1 and GSTR-3B acknowledgements

• GSTR-2B reconciliation statement

• Electronic cash and credit ledger extracts

• Payment challans and bank statements

• E-invoice and e-way bill records

• Delivery challans and goods-receipt documents

• Contracts, purchase orders and work orders

• Export documents and shipping bills

• Reverse-charge calculations

• Refund applications and supporting evidence

• Registration documents and address proof

• Audited financial statements where relevant

Attach only relevant documents and label them clearly. A large, unorganised file can make it difficult to find the evidence supporting the reply.

How to respond to a return mismatch

Return mismatches are common reasons for a GST notice. Start by comparing the notice period with the following records:

• Sales register

• GSTR-1 outward-supply details

• GSTR-3B summary liability

• E-invoice data

• Credit and debit notes

• Books of account

• Tax payment records

Classify the difference as a reporting error, timing difference, amendment, cancellation, wrong tax type, duplicate entry or genuine unreported supply.

If the taxpayer reported less tax than was actually payable, calculate the additional tax and applicable interest. If the department’s figure is incorrect, provide a transaction-wise reconciliation showing the correct treatment.

For general return guidance, read our GSTR-1 and GSTR-3B article.

How to respond to an ITC notice

When a notice concerns input tax credit, the taxpayer should review every disputed invoice. Check the supplier GSTIN, invoice number, date, taxable value, tax amount, receipt of goods or services, business use and payment status.

Compare the purchase register with GSTR-2B and identify whether the supplier filed the invoice late or amended it later. However, the appearance of an invoice in GSTR-2B alone does not prove that the credit is eligible.

Remove blocked credit, personal-use expenses, duplicate invoices and credit relating to goods or services not received. Explain every exclusion and reversal in the reconciliation statement.

For related guidance, read our GSTR-2B reconciliation guide and Input Tax Credit under GST article.

How to respond to an unpaid-tax notice

Compare the proposed tax with the sales invoices, return figures and payment challans. Confirm whether the amount was already paid, paid under another tax head, reported in a different period or incorrectly calculated.

If tax was paid under the wrong head, the taxpayer may need to follow the applicable adjustment or refund procedure. Do not assume that a payment under one tax head automatically settles a liability under another tax head.

If an amount is admitted but remains unpaid, pay it using the official GST Portal and retain the challan and payment reference. Payment does not always close the proceedings automatically; follow the notice instructions for submitting proof or requesting closure.

How to respond to a REG-17 notice

A taxpayer receiving REG-17 should identify the reason for proposed cancellation. The issue may relate to non-filing, non-functioning business, incorrect address, fake invoices, violation of conditions or another ground specified by the officer.

The reply should include:

• A direct response to the stated reason

• Proof that the business is operating, if relevant

• Filed return acknowledgements

• Tax payment details

• Photographs, rent agreement or utility records where address is questioned

• Explanation of any temporary non-compliance

• Request for continuation or restoration of registration

If the taxpayer does not wish to continue the business, submitting a truthful cancellation application may be more appropriate than providing an incorrect reply.

How to respond to an ASMT-10 notice

ASMT-10 generally relates to scrutiny of returns. The notice may identify a discrepancy between declared turnover, tax liability, input tax credit, exempt supplies or other information.

Prepare a table with four columns:

A point-wise table makes the reply easier to review. If additional tax is payable, show the calculation separately rather than combining it with unrelated explanations.

How to respond to DRC-01

DRC-01 generally relates to a demand or show-cause proceeding. Read the detailed notice behind the summary and identify the legal section invoked.

Review the following separately:

• Tax amount

• Interest calculation

• Penalty proposal

• Tax period

• Nature of alleged supply

• Evidence relied upon by the department

• Time allowed for reply

• Hearing opportunity

If the taxpayer disagrees, explain the facts and legal basis clearly. If the taxpayer accepts part of the liability, state the accepted and disputed portions separately. A professional adviser may be appropriate where the notice involves large amounts, fraud allegations, inspection findings or complex classification issues.

Voluntary payment through DRC-03

In suitable cases, a taxpayer may make a voluntary payment through the prescribed GST form and procedure. The taxpayer should first verify the correct tax, interest and penalty amounts and retain the payment reference.

Voluntary payment does not replace a reply where the notice asks for an explanation. If the portal or notice requires a separate response, submit the reply and attach the payment proof.

Reply deadlines

The deadline is stated in the notice and may differ according to the form and legal provision. Some notices provide a short period, while show-cause proceedings may allow a different period and may include a hearing date.

Never assume that all GST notices have the same deadline. Check the notice, portal case details and any applicable rule. If more time is genuinely required, submit a request for extension before the deadline and explain the reason.

A request for extension is not automatically accepted. The taxpayer should continue preparing the reply and submit it within the original period if possible.

Personal hearing

Some proceedings provide an opportunity for a personal hearing. The taxpayer should attend through the authorised person or representative and carry a copy of the reply, reconciliation and supporting documents.

During the hearing, answer the officer’s questions directly. Do not introduce a new explanation that contradicts the written reply unless the correction is clearly explained.

After the hearing, keep a record of the date, officer’s observations and any additional documents requested. Submit additional information through the permitted portal procedure within the specified time.

What happens if a notice is ignored?

Failure to reply can result in an order being passed using the information available to the department. Possible consequences may include tax demand, interest, penalty, registration suspension or cancellation, recovery action and difficulty in future compliance.

Even when the taxpayer believes the notice is incorrect, a response should normally be submitted. A short response identifying the error and requesting correction is better than complete silence.

Can a GST notice be challenged?

Depending on the stage and nature of the proceeding, the taxpayer may submit a clarification, reply, request for rectification or appeal. The correct remedy depends on whether the communication is a notice, order or demand and whether the statutory time limit is still open.

Do not treat an appeal as a substitute for replying to an initial notice. If a final order has already been issued, review the appeal provisions, pre-deposit requirement and limitation period with a qualified GST professional.

How to write a strong reconciliation statement

A reconciliation statement should be easy to follow. Use consistent invoice numbers, dates and tax amounts. Explain why the books, returns and portal data differ.

A useful format includes:

Attach a summary first and detailed invoice-level data as an annexure. This helps the officer understand the overall explanation before reviewing individual documents.

Records businesses should maintain

• Notice register with reference number and due date

• Copies of all notices and replies

• Proof of portal submission

• Return filing acknowledgements

• Tax payment challans

• Sales and purchase reconciliation

• Supplier communication regarding missing invoices

• Credit and debit note records

• Bank statements supporting payments

• Contracts and delivery evidence

• Export, e-invoice and e-way bill documents

• Professional advice and hearing notes

A notice register can include the notice date, form number, tax period, issue, due date, responsible person, reply date and current status.

Common mistakes while replying

• Ignoring the notice because the amount appears small

• Submitting a generic one-line response

• Missing the reply deadline

• Replying without reading the annexures

• Providing documents without an index

• Using figures that do not match the books

• Admitting liability without checking the calculation

• Disputing everything without evidence

• Failing to pay accepted tax and interest

• Not attending a scheduled hearing

• Uploading a file in the wrong format or size

• Not saving the acknowledgement number

• Using an unauthorised person’s credentials

• Sharing sensitive documents through unofficial links

How InvGear records can help

Accurate invoice records make it easier to answer many GST queries. Maintain invoice numbers, GSTINs, HSN or SAC codes, place of supply, tax breakup, credit notes, payment status and customer details in an organised manner.

For invoice-related preparation, read our GST invoice format guide. You can also use the InvGear HSN Code Finder to research a product classification before reviewing invoice records. The final classification and tax treatment should still be checked against current official sources.

Example: reply to an ITC mismatch notice

Suppose a notice alleges that a business claimed ₹75,000 of excess ITC. The business downloads its GSTR-2B, purchase register and invoices and finds the following:

The taxpayer should explain the timing difference, provide evidence for the supplier filing and reverse or pay the blocked credit as required. The reply should not claim the entire ₹75,000 merely because invoices exist in the accounting system.

Example: reply to a non-filing notice

If a taxpayer receives a GSTR-3A notice for a pending GSTR-3B return, first confirm whether the return was actually filed. If it was filed, attach the ARN and filing date and request closure of the notice.

If it was not filed, calculate the tax, interest and late fee, submit the return as soon as possible and attach the filing acknowledgement. If there was a genuine reason for the delay, explain it briefly and provide supporting evidence. Filing the return does not guarantee that all proceedings or charges will disappear, so follow the notice instructions carefully.

Example: reply to a registration cancellation notice

A business receiving REG-17 for non-filing may reply with filed-return acknowledgements and tax payment records. If the address is questioned, attach the rent agreement, recent utility bill, consent letter or other permitted proof.

If the business has moved, update the registration details through the appropriate amendment procedure. If the business has closed, provide truthful information and follow the cancellation and final-return requirements.

When professional advice is useful

Professional help may be appropriate when the notice involves a large tax amount, alleged fraud, fake invoices, suppression of turnover, classification disputes, cancellation of registration, inspection findings or repeated non-compliance.

A tax professional can review the legal provision, calculate interest, prepare a reconciliation and advise whether payment, reply, rectification or appeal is appropriate. The taxpayer should provide complete records and not conceal relevant information.

GST notice checklist

• Download the notice and annexures.

• Verify GSTIN, legal name and tax period.

• Identify the form and legal section.

• Mark the exact reply deadline.

• Check whether a hearing is scheduled.

• Reconcile the department’s figures with books and returns.

• Prepare a point-wise response.

• Attach indexed and readable documents.

• Pay admitted tax, interest or late fee where applicable.

• Submit through the official portal.

• Save the acknowledgement and submitted reply.

• Track further orders or communications.

Conclusion

A GST notice should be treated as an important compliance communication, but it should not automatically be viewed as a final penalty. Read the notice carefully, identify the legal provision, compare the figures with business records and submit a complete response within the stated time.

Accurate invoices, reconciled returns, payment challans and organised records make the reply process much easier. If the issue is complex or the financial exposure is significant, obtain professional advice before accepting liability or filing an appeal.

Official sources

• Official GST Portal

• GST Portal Tutorials and User Guides

• CBIC Tax Information Portal

• Central Board of Indirect Taxes and Customs

• GST Council