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Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallUse the notice’s Reference Number (RFN) in the GST Portal’s official Verify RFN service before you respond, pay, or share documents. You can check it without signing in at https://services.gst.gov.in/services/verifyRfn, or after signing in at www.gst.gov.in through Dashboard → Services → User Services → Verify RFN. Enter the RFN and captcha, then compare the returned record with the notice.
The most important point is that a portal-generated notice can be valid even when the downloaded PDF does not show a visible digital-signature mark. GSTN says the officer authenticates into the system with a digital signature; the portal stores the order and issuing-officer details in digitally signed JSON. The portal record, not the appearance of a signature image on the PDF alone, is the decisive check.
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What you are verifying
An electronically authenticated GST notice is a communication generated through the GST system after an authorised officer has authenticated into the portal. GSTN’s 25 September 2024 advisory addressed doubts raised when downloaded notices, assessment orders and refund orders did not display an obvious PDF signature. According to that advisory, the officer’s portal action is digitally authenticated, while the system stores the document and issuing-officer information in digitally signed JSON.
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GSTN also states that critical officer actions, including issuing a notice, issuing an order and issuing a refund order, are performed through digital-signature authentication. A downloaded copy may therefore look like an ordinary PDF while the underlying portal record carries the authentication evidence.
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That does not mean every PDF claiming to be from a tax office is genuine. You should verify the identifier through the government service and check that the returned metadata agrees with the document you received. A visible signature can be useful evidence, but its absence is not, by itself, proof that a portal-generated notice is invalid.
Find the RFN before opening the verifier
Look through the notice for its Reference Number, usually abbreviated as RFN. Use the identifier exactly as printed, including letters, numbers and separators if the portal accepts them. Do not substitute a taxpayer account number, an order number from another system, an email reference or a payment reference.
The RFN is the key identifier for communications generated through the GST common portal. CBIC Circular No. 249/06/2025-GST explains that common-portal documents bear a verifiable RFN and that the verification result can show when the RFN was generated, when the document was issued, which module created it, what type of communication it is and which office issued it.
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- Keep the original notice open while you verify it.
- Record the RFN without relying on a link in an email or text message.
- Check whether the document describes itself as a notice, order, refund order or another communication before comparing the result.
- If the document has more than one identifier, identify which one is labelled RFN and treat other identifiers separately.
Verify a GST notice without signing in
Pre-login verification is useful when you receive a notice by email, post or another channel and want to check its origin before entering your account. GSTN documents this route as a public verification service.
- Open the official service directly. Type or paste https://services.gst.gov.in/services/verifyRfn into your browser. Avoid using an unverified shortened link or an address supplied only in a suspicious message.
- Enter the RFN. Copy the notice’s Reference Number into the RFN field. Check characters that are easy to confuse, such as zero and the letter O, or one and the letter I.
- Enter the captcha. The verifier requires the captcha displayed on the page. Read it carefully and enter it in the required field.
- Submit the request. Use the page’s verification control and wait for the portal response.
- Capture the result for comparison. Note the RFN-generation date, document date, module, communication type and issuing office shown by the service. The pre-login route may expose fewer details than the signed-in route, but it is still the official first check.
- Compare every available field with the notice. A matching RFN is not enough if the returned office, document type or dates contradict the document you received.
Pre-login verification does not require you to disclose your GST login credentials to the sender of the notice. If someone asks you to send a password, one-time code or screen recording in order to validate an RFN, do not provide it. Use the government service yourself.
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Verify after signing in to the GST Portal
The post-login route can provide greater detail than the public lookup. GSTN’s documented path is:
- Open www.gst.gov.in and sign in through the normal GST Portal login.
- From the dashboard, select Services.
- Open User Services.
- Select Verify RFN.
- Enter the RFN and captcha, then submit the verification request.
- Compare the returned record with the notice before taking action.
The path is important because it distinguishes the GST Portal’s own verification function from a sender’s private page or an attachment. GSTN’s stated post-login route is Dashboard → Services → User Services → Verify RFN.
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If the signed-in result contains additional information that is not visible in the pre-login result, use the fuller record for your comparison. The 2023 GSTN facility guidance describes limited details before login and greater details after login. Save the result with the notice in your internal tax records so that the identifier, dates and issuing office can be reviewed later.
Match the portal result to the notice
CBIC identifies five important fields returned by RFN verification. Check them one by one rather than treating the result as a simple yes-or-no stamp.
| Field | What to compare | Why it matters |
|---|---|---|
| RFN-generation date | Compare the date shown by the portal with the identifier information on the notice or its associated communication record. | It confirms when the portal created the reference and can expose a document whose claimed history does not fit the portal record. |
| Document-issue date | Compare the portal’s document date with the date printed on the notice. | A mismatch can affect response deadlines and may indicate that the document and RFN do not belong together. |
| Module | Check that the portal module corresponds to the process described in the notice. | The module helps distinguish communications generated by different GST functions. |
| Communication type | Check whether the result identifies the same type of communication, such as a notice, order or refund-related document. | A genuine RFN attached to a different communication type is not a clean match. |
| Issuing office | Compare the office named by the portal with the office shown on the notice. | The issuing office is a direct identity check for the authority that created the communication. |
Use the dates as dates, not merely as numbers. A document date and an RFN-generation date can be different fields; do not assume that they must be identical. The correct test is whether the portal values and the notice tell the same story about the same communication.
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What a missing PDF signature does—and does not—prove
A visible digital-signature panel on a PDF is not the GST Portal’s only authentication mechanism. GSTN’s 25 September 2024 advisory says that notices, assessment orders and refund orders are generated after an officer authenticates through the portal. The system records order details and issuing-officer details in digitally signed JSON.
Consequently, a downloaded notice may not show a conventional signature graphic or a PDF validation banner and still be an electronically authenticated portal document. The proper response is not to reject it automatically; it is to verify its RFN and compare the returned fields.
The reverse is also important: a polished PDF, letterhead or apparent signature does not replace RFN verification when the document claims to have been generated through the common portal. If the identifier cannot be verified, or the returned office and communication type conflict with the notice, pause before relying on it.
RFN and DIN are not interchangeable
Readers often look for a DIN, or Document Identification Number, on every GST communication. The identifier required depends on how and where the communication was issued.
| Communication route | Identifier or verification route | Practical rule |
|---|---|---|
| GST common-portal communication | Verifiable RFN through the GST Portal’s Verify RFN facility. | For a communication served through the common portal under section 169(1)(d) of the CGST Act, a verifiable RFN generally means a second DIN is not required for that purpose. |
| State GST correspondence handled through an offline process | GSTN’s facility guidance provides RFN verification before login or after login, with more detail available after login. | Verify the RFN through the official facility and assess the document in the context of the State GST office that issued it. |
| Central GST officer documents | CBIC DIN facility may apply. | Do not assume that an RFN and a DIN are the same identifier or that one can be substituted for the other. |
| DGGI communications | A DIN, eOffice Issue Number or RFN may apply depending on the issuing platform. | Validate the identifier relevant to the route used by the Directorate General of Goods and Services Tax Intelligence. |
CBIC’s clarification is specific to common-portal service: when that communication has a verifiable RFN, the RFN-bearing communication is treated as valid for the stated purpose without a second DIN. That rule should not be stretched to every letter from every GST-related authority.
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A discrepancy is a reason to stop and resolve the identity of the document, not a reason to guess. Use this decision sequence.
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The RFN returns a record, but the details differ
Compare the issuing office, communication type, module, RFN-generation date and document date again against the original notice. If one or more fields do not agree, do not rely on the notice until the discrepancy is resolved through the GST Portal or with the relevant tax authority. A genuine-looking attachment can still be paired with the wrong identifier.
The service does not return the expected record
Re-enter the RFN carefully and repeat the check from the official service address or the documented post-login menu. Confirm that you are using the RFN rather than another number printed on the page. If the identifier still cannot be validated, treat the communication as unverified and contact the relevant authority through an independently obtained official channel.
The notice demands immediate payment or sensitive information
Do not let urgency replace authentication. First verify the RFN and compare the returned metadata. Until the discrepancy is resolved, do not act on payment instructions, upload documents or disclose credentials solely because the message uses GST branding.
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Determine the issuing route. For a common-portal communication with a verifiable RFN, CBIC says a separate DIN is not needed for the purpose covered by section 169(1)(d). For Central GST or DGGI material, check whether the relevant document should instead carry a CBIC DIN, eOffice Issue Number or another identifier.
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Verification is more useful when you preserve what you checked. Keep the received notice together with the RFN, the date you verified it and a copy or printout of the portal result. If you used the signed-in route, note that the result came from Dashboard → Services → User Services → Verify RFN. If you used the public route, retain the exact official verification address.
- Original notice or downloaded document.
- RFN as printed on the communication.
- Portal result showing the available dates, module, communication type and issuing office.
- A written note of any mismatch and the authority contacted to resolve it.
- Correspondence confirming how a discrepancy was corrected, if applicable.
Do not edit the original notice to make it match the portal. Preserve the document as received and keep any corrected or replacement communication separately.
A practical verification checklist
- Locate the RFN on the notice.
- Open the official Verify RFN service before trusting links in the message.
- Enter the RFN and captcha, then submit.
- Repeat through the signed-in route when you need the fuller post-login result.
- Match the RFN-generation date and document date.
- Match the module and communication type.
- Match the issuing office.
- Do not reject a portal notice solely because its PDF lacks a visible signature.
- Do not treat an RFN, DIN and eOffice Issue Number as interchangeable.
- Pause and resolve any inconsistency with the GST Portal or the relevant tax authority before acting.
Questions taxpayers commonly ask
Is a GST notice valid without a digital signature visible on the PDF?
It can be. GSTN says portal-generated notices are issued after officer authentication and that the system stores the relevant details in digitally signed JSON. Verify the RFN and compare the returned record instead of judging validity from the PDF appearance alone.
Do I need a DIN when the notice has an RFN?
For a communication served through the GST common portal under section 169(1)(d) of the CGST Act, CBIC says a verifiable RFN means a second DIN is not required for that purpose. Other Central GST, State GST offline or DGGI routes can follow different identifier rules.
Can I verify an RFN without logging in?
Yes. GSTN provides pre-login verification at https://services.gst.gov.in/services/verifyRfn. The post-login route through Dashboard → Services → User Services → Verify RFN can provide greater detail.
Which details should match the notice?
Check the RFN-generation date, document-issue date, module, communication type and issuing office returned by the portal. A mismatch in any of these fields should be resolved before you rely on the communication.
What should I do if the result conflicts with the notice?
Do not act on the disputed communication until the inconsistency is resolved through the GST Portal or the relevant tax authority. Preserve the notice and the verification result so you can explain exactly which identifier or field did not match.
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