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First, determine whether someone has printed invoices using your existing GSTIN or has obtained a separate GST registration with your PAN. Those are different problems. GSTN documents an online reporting workflow for an unauthorized registration linked to your PAN, but the materials available do not establish that this workflow automatically handles fake invoices that merely copy an existing GSTIN.
Preserve the invoices and related communications, check your PAN-linked registrations, report any unauthorized registration through the GST Portal, and contact your jurisdictional GST authority about invoices that impersonate your existing registration. If you receive a notice, demand, or question about tax liability, obtain advice from a GST practitioner or tax lawyer before responding.
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Start by identifying which GST identity was misused
The phrase “fake GST invoice” can describe two fact patterns that require different first steps:
| What happened | What was misused | Documented route | Acknowledgement |
|---|---|---|---|
| A separate GST registration was obtained without your consent | Your PAN was used to secure a GSTIN you did not apply for | GST Portal: Search taxpayer > Search by PAN, select the unauthorized registration and submit a report to the jurisdictional officer | GSTN says each reported GSTIN receives an ARN that can be tracked |
| Invoices were issued using your existing GSTIN | Your already-held GSTIN was copied onto documents you did not issue | The official materials reviewed do not establish a distinct online process for this exact situation; contact the jurisdictional GST authority and ask which reporting route applies | Keep proof of your communication; an ARN is documented for the PAN-misuse workflow, not confirmed for this invoice-impersonation scenario |
Do not report an invoice-impersonation case as an unauthorized registration unless the PAN search shows a separate registration you did not obtain. Conversely, do not assume that finding an unfamiliar registration explains every fake invoice: an impostor may simply be reusing the GSTIN that is already yours.
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What to do in the first 24 hours
1. Secure the original evidence
Download or scan every suspect invoice in the form in which you received it. Keep the file name, email headers or message details, and the date you discovered it. Do not edit the original PDF or image. If you must redact information for a later public disclosure, make a separate copy and retain the unredacted original securely.
- Record the invoice number, invoice date, supplier or recipient name, taxable value, tax amounts, place of supply, and the GSTIN shown.
- Note how the invoice came to your attention: a customer query, a tax notice, a payment demand, a vendor email, or a portal record.
- Preserve emails, messaging-app exports, call logs, letters, courier envelopes, and any bank or payment references connected with the document.
- Take dated screenshots of relevant portal pages and save downloaded acknowledgements.
- Keep a written chronology of what you found, when you contacted each authority, and who responded.
This recordkeeping is practical protection, not a statutory checklist stated in GSTN’s procedural document. It gives an authority or adviser a reliable trail and helps separate your genuine transactions from the impersonated ones.
2. Do not acknowledge the invoice as your transaction
When replying to a customer or authority, state precisely that the document was not issued by you, that you did not supply the goods or services described, and that you are preserving evidence. Avoid wording that could be read as accepting the sale, collecting the tax, or confirming the underlying transaction. Do not destroy or overwrite accounting records while investigating.
3. Check whether your PAN has another GST registration
On the GST Common Portal, open Search taxpayer > Search by PAN. Review every registration associated with your PAN. Compare the legal name, trade name, registration status, jurisdiction, and other displayed details with your own records. The taxpayer-lookup material describes searches by GSTIN, UIN, or PAN and lists fields such as legal or trade name, jurisdiction, registration status, and return-filing information; verify the live portal because screens and fields can change.
If a GST registration was obtained using your PAN
Submit the GSTN PAN-misuse report
GSTN’s documented process is specifically for a registration obtained by using a person’s PAN without consent or knowledge. After the PAN search, select the GSTIN you did not obtain and submit the report to the jurisdictional officer. GSTN says the complaint is routed to the authority for the jurisdiction in which that registration is claimed to have been fraudulently taken.
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- Open the GST Common Portal and choose Search taxpayer > Search by PAN.
- Review the registrations returned for your PAN.
- Select the GSTIN you did not apply for or authorize.
- Complete the complaint form and the required email and mobile validation.
- Provide the additional personal details and authentication requested by the portal. GSTN’s document describes Aadhaar authentication and additional details for registrations other than proprietorships; confirm the current requirement on the live screen.
- If you are acting through an authorized representative, use the representative option described in the GSTN process and retain the authorization record.
- Submit the complaint and save the acknowledgement reference number (ARN) for that GSTIN.
GSTN states that each GSTIN reported receives a separate ARN, that the submission is sent to the relevant authority, and that the complainant can track the application. Save a PDF or screenshot of the ARN and status page. The portal interface may be updated, so rely on the current labels and instructions shown when you file.
What this report does not establish
The PAN-misuse process documents an unauthorized registration. It does not, on the evidence available here, promise to cancel or investigate invoices that merely display your legitimate GSTIN. If the PAN search shows only your genuine registration but an outsider has issued documents carrying that GSTIN, contact your jurisdictional GST authority separately.
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If fake invoices use your existing GSTIN
Contact the jurisdictional GST authority
The official materials reviewed do not identify a separate, confirmed portal form for an invoice that copies an existing GSTIN. Send the authority a concise written complaint or request for direction and ask which channel, officer, or procedure applies. Include the suspect invoices and a statement that you did not issue them, along with the evidence needed to identify the affected registration and transactions.
Ask for written confirmation of receipt or another reference. Keep the sent message, delivery evidence, attachments, and any response in your chronology. If an officer directs you to a particular form or office, follow that direction and retain a copy of the submission.
Separate the impersonated document from your real books
Reconcile the invoice details against your sales register, e-invoice or other internal records that you actually maintain, customer contracts, dispatch records, and bank receipts. The purpose is to identify whether the document is wholly fabricated, whether someone altered a genuine invoice, or whether a real transaction has been misattributed. Do not create replacement invoices simply to “correct” an impostor’s document unless a qualified adviser and the authority tell you that a specific correction is required.
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Escalate when there is a notice or tax exposure
A notice, demand, input-tax-credit dispute, or question about tax liability can create deadlines and legal consequences. Give the complete file to a GST practitioner or tax lawyer and ask for case-specific advice. The fact that a third party used your GSTIN does not, by itself, establish the outcome of an investigation or determine your liability. Your adviser can help decide how to respond, what records to submit, and whether another law-enforcement or regulatory report is appropriate.
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DGGI’s public-service information says certain GST communications can be checked using an identifier shown on the document: a DIN, an eOffice Issue Number, or a GSTN RFN Number, depending on the issuing platform and document type. Use the appropriate official verification route before clicking links, sending money, sharing credentials, or relying on a demand.
- Compare the identifier exactly as printed on the communication.
- Use the verification option intended for that identifier and document type.
- Save the verification result with the original communication.
- If the document cannot be verified or asks for unusual payment or personal information, contact the issuing authority through independently obtained official contact details.
This verification service is broader than the specific problem of a copied GSTIN. It should not be treated as a confirmed complaint channel for invoice impersonation.
What section 122 means for the person whose GSTIN was copied
CBIC’s tax-information material reproduces section 122 language that includes issuing a document using another registered person’s registration number among listed offences and describes a penalty provision. That wording is relevant to the conduct of the person who issued the document, but it does not, on its own, decide whether the GSTIN owner owes tax, what penalty applies in a particular case, or how an investigation will end.
The statutory text and amendments should be checked in the current official version before quoting it in a representation. Do not infer your own liability from the mere appearance of your GSTIN on an invoice. Respond to the facts and any notice with professional advice, supported by your records showing what you did and did not supply.
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Build a submission that an officer can act on
A clear file reduces back-and-forth. Organize it in this order:
- Cover note: your legal name, genuine GSTIN, PAN, contact details, jurisdiction if known, and a one-paragraph statement that the listed invoices were not issued by you.
- Invoice schedule: one line per suspect document with invoice number, date, counterparty, value, tax shown, and where you obtained it.
- Copies of documents: retain originals and attach readable copies in a consistent file-name sequence.
- Comparison evidence: relevant ledger extracts, order or dispatch records, and bank records showing whether the alleged transaction exists in your books.
- Communications: customer messages, notices, payment requests, and your replies.
- Portal records: PAN-search results, screenshots, and any ARN if you used the documented PAN-misuse workflow.
- Chronology: dates of discovery, submissions, calls, and responses.
Send only the information needed for the complaint through the authority’s instructed channel. Protect passwords, one-time codes, Aadhaar details, and other identity data; an investigator should not require you to disclose account credentials.
Common mistakes and how to avoid them
Assuming every fake invoice is a PAN-registration case
A copied existing GSTIN and an unauthorized GSTIN created with your PAN are not the same. Run the PAN search first, then choose the route that matches what you find.
Relying on a phone call without a record
Calls can be useful for finding the right office, but follow up in writing and retain proof. Without a dated record, it is difficult to show what you reported or what direction you received.
Deleting the source file after forwarding it
Forwarded PDFs and screenshots can lose metadata or context. Keep the original email, attachment, message export, and a clean copy of each invoice.
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Making a public accusation before the facts are checked
Report through the responsible authority and limit disclosures to people who need the information. A document may be altered, misdirected, or based on a genuine transaction that was recorded incorrectly; preserve the evidence before assigning blame.
Ignoring an official notice because the invoice is fake
A false invoice can still trigger a real inquiry. Verify the communication, note every deadline, and obtain advice promptly rather than assuming the matter will disappear.
A practical decision checklist
- Is the GSTIN on the document your existing GSTIN?
- Does Search taxpayer > Search by PAN show another GSTIN you did not obtain?
- Have you saved the original invoices and the messages or notices that accompanied them?
- Have you compared the alleged transactions with your books, contracts, fulfilment records, and bank entries?
- If there is an unauthorized registration, did you submit the GSTN report and save the ARN for each GSTIN?
- If only your existing GSTIN was copied, did you ask the jurisdictional GST authority which reporting route applies and retain proof?
- Have you verified any DIN, eOffice Issue Number, or GSTN RFN Number before acting on a communication?
- Is a notice, demand, or potential liability question being handled with case-specific professional advice?
What to expect after reporting
For the documented PAN-misuse route, GSTN says the complaint is sent to the relevant jurisdictional authority and can be tracked with the ARN. The materials do not establish a standard timeline or guaranteed outcome. For invoices that copy an existing GSTIN, the available sources do not establish a uniform portal workflow, acknowledgement format, investigation timetable, or remedy. Ask the authority what happens next and record the answer.
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