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Open the official Income Tax e-Filing portal by typing the address yourself or using a trusted bookmark. Do not rely on a login, payment or verification link contained in a suspicious message.
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What the Income Tax notice authentication service does
The Income Tax Department’s Authenticate Notice / Order issued by ITD service checks whether the Department’s records contain a notice, order, summons, letter or other correspondence matching the information you submit. The Department describes this as a pre-login service, which means you do not have to sign in to your e-Filing account.
The service is available to registered and unregistered users. The mobile number used for the one-time password (OTP) does not have to be the number registered on the e-Filing portal, according to the Department’s FAQ. You still need access to the number during the check because the OTP is required before the portal displays the result.
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Authentication is an issuance check only. A successful match does not submit a reply, extend a deadline, settle a tax demand or replace any other action required by the communication. The Department provides a separate Comply to Notice function for responding to certain notices.
For the Department’s procedural instructions, see the Authenticate the Notice/order issued by ITD user manual and its authentication FAQ.
Which communications can you check?
The service is intended for Department communications such as notices, orders, summonses, letters and other correspondence issued by Income Tax authorities. The result is tied to the identifying information entered on the form. It is not a general search of every item in your tax account, and it does not interpret the contents of a document.
Keep the original PDF, paper letter or message available while checking. The fields needed for the PAN route are normally printed on the communication, while the DIN route depends on being able to read the complete DIN accurately.
What you need before starting
- For a PAN search: your PAN, the document type shown on the communication, the applicable year type (Tax Year or Assessment Year), the year, the date of issue and a mobile number that can receive SMS.
- For a DIN search: the complete DIN printed on the communication and a mobile number that can receive SMS.
- For either method: a current browser and the ability to receive the portal’s OTP. You do not need to log in first.
Copy the notice details exactly as printed. A transposed digit in the PAN or DIN, an incorrect year type, or a different issue date can prevent a match even when the communication is genuine. Have the document open at the same time so you can compare each field rather than relying on memory or on a date in an email subject line.
Choose the verification method that fits your notice
| Method | Information required | Result described by the Department | Best choice when |
|---|---|---|---|
| PAN and notice details | PAN; document type; Tax Year or Assessment Year; year; issue date; mobile number | For a match, the portal displays the document number and issue date. If the criteria do not match a record, it displays “No record found.” | The notice does not show a DIN, or you want to search using the identifying details printed on it. |
| DIN | Complete Document Identification Number and mobile number | For a match, the portal confirms that the notice, order or letter was issued by the Income Tax Authority. A failed search displays “No record found.” | The communication clearly shows a DIN and you can copy every character accurately. |
The table reflects the outcomes in the Department’s user manual. The authentication screen’s DIN option is separate from the Department’s response-submission instructions; do not assume that requirements for Comply to Notice apply to this check.
Use the DIN route when the number is clearly printed and complete. Use the PAN route when there is no DIN or when the number is difficult to read. Neither route is inherently a stronger legal response; they are alternative ways to locate the Department’s issuance record.
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Step-by-step: authenticate the notice or order
1. Reach the official e-Filing portal independently
Go to the Income Tax Department e-Filing homepage. If you are checking a message that arrived by email, SMS or messaging app, do not open its embedded link. Instead, type the official domain yourself or use a bookmark you created previously.
2. Open “Authenticate notice/order issued by ITD”
On the portal’s public homepage, find the Quick Links area and select Authenticate notice/order issued by ITD. The service opens before login. If the visible wording, page design or web address looks different from the official domain, stop and return to the homepage you reached independently.
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3. Select how you will search
The service presents two routes: one based on PAN and notice details, and one based on DIN. Choose the route for which you have the most reliable information. If the notice has a DIN, use the complete number rather than guessing from a partial string. If it does not, use the PAN route and transcribe each field from the document.
4. Enter PAN and notice details, if using the PAN route
- Enter the PAN exactly as printed.
- Select the document type that corresponds to the communication.
- Select the year type: Tax Year or Assessment Year.
- Select the relevant year.
- Enter the date of issue shown on the notice.
- Enter a mobile number that you can access now. It does not have to be the mobile number registered on your e-Filing account, as stated in the Department’s FAQ.
- Select Continue.
Use the issue date, not the date you downloaded, opened or received the document. If the notice uses a date format that could be read two ways, compare it with the portal’s date selector and the rest of the document before submitting.
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- Choose the DIN option.
- Type the complete Document Identification Number (DIN) exactly as printed, including every letter, number and separator required by the form.
- Enter an accessible mobile number.
- Select Continue.
The user manual calls DIN the “Document Identification Number.” The Department’s separate FAQ expands the phrase differently as “Documentation Identification Number,” but the portal field is labeled Document Identification Number (DIN). Follow the label on the live authentication screen.
6. Enter the OTP
The portal sends a six-digit OTP to the mobile number you supplied. Enter it on the verification screen and continue. The user manual states that an OTP remains valid for 15 minutes and permits three entry attempts. If you request another OTP, the portal generates a new one; use the newest message rather than an earlier code.
Do not share the OTP with anyone who contacts you by phone, email or message. Department staff and legitimate advisers do not need you to disclose a one-time code for this self-service check.
7. Read and save the result
With a successful PAN-and-details search, the portal displays the document number and issue date. With a successful DIN search, it displays confirmation that the notice, order or letter was issued by the Income Tax Authority. Save or print the result for your records, along with the original communication and the date on which you checked it.
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How to interpret a successful match
A match means the Department’s authentication service found a corresponding issuance record. It helps answer the narrow question, “Does the Department record this communication as issued?” Compare the portal’s document number and issue date with the paper, PDF or message you received. Differences should be treated as a reason to investigate before you pay, disclose information or follow a link in the communication.
Authentication does not tell you whether the tax calculation is correct, whether the notice is within a response period, whether a demand should be paid, or what legal position you should take. It also does not prove that every attachment, bank detail or telephone number in a message is safe. Verify any requested action through the independently reached portal.
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What “No record found” means and what to check
The Department’s manual documents the no-record result but does not list every possible reason for it. Before drawing conclusions, repeat the check carefully:
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- Confirm that you selected the correct document type.
- Check whether the notice refers to a Tax Year or an Assessment Year, then choose the matching year type.
- Verify the year and enter the issue date printed on the communication, not another date shown in an email or file name.
- For a DIN search, retype the complete DIN and check for letters that resemble numbers, or vice versa.
- Request a fresh OTP if the earlier one expired, and enter the latest code within the stated validity period.
Run the search again after correcting any discrepancy. If it still returns no record and the communication could affect your tax position, do not ignore it solely because of that screen. Reach the Department through contact information obtained independently from the official portal, or consult a qualified tax professional. Do not use a phone number, payment account or web link supplied only in a suspicious message.
DIN guidance for communications issued from 1 October 2019
The Department’s published authentication FAQ says communications issued on or after 1 October 2019 should carry a unique DIN. The same FAQ states that a communication without a DIN is invalid and need not be answered. This is the Department’s published guidance; it should not be treated as independent legal advice or applied without considering the current wording and any exceptions in official instructions.
Check the date and the document itself before relying on this statement. A missing or unusual DIN is a reason to verify the communication through the official service and obtain professional advice when the stakes are significant, not a reason to click an alternative link or send money to a sender.
Authentication is not the same as responding to a notice
After confirming that a communication is recorded, read its instructions separately. The Department’s Comply To Notice FAQ describes a different pre-login function for submitting responses to specified categories of notices. A successful authenticity check does not submit anything to the Department.
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Keep these actions distinct:
- Authenticate: check whether the Department records the communication as issued.
- Understand: identify the issue, period, requested information and response deadline stated in the notice.
- Respond or pay: use the appropriate official workflow, only after confirming what the notice requires.
The Comply To Notice FAQ also says its material is for information and does not constitute legal advice. If the notice involves a large demand, reassessment, penalty, prosecution risk or a deadline you may miss, obtain advice from a qualified tax professional rather than treating the authentication result as a complete resolution.
Security practices when a notice arrives unexpectedly
Use the portal, not the message, as your starting point
Fraudulent messages often create urgency and direct recipients to a look-alike website. Open the official e-Filing homepage independently, then use Quick Links to reach the authentication service. Check the address bar before entering PAN, DIN, mobile number or OTP.
Do not make payment from an unverified message
The authentication service does not ask you to pay a fee to verify a notice. A match does not itself instruct you to transfer money. If a communication requests payment, compare its details with the official portal and follow only the Department’s independently reached payment workflow.
Protect personal information and OTPs
Enter your PAN, DIN and OTP only on the official portal. Never forward an OTP or allow a caller remote access to your device while you authenticate a communication. A mobile number supplied for the check can be different from the number registered with the Department, but it should still be a number you control.
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Common data-entry pitfalls
Most avoidable failures come from using a plausible but wrong field. The year type is especially important: an Assessment Year and a Tax Year are not interchangeable selections on the form. Likewise, an issue date is different from a receipt date, download date or the date in an email header. For a DIN, inspect every character, including separators and any leading or trailing characters. If the document is a scan, zoom in rather than guessing whether a character is a letter or a number.
Do not switch to the response-submission workflow merely because the authentication search fails. First correct the identifying information and repeat the authentication. Only after a record is found should you separately determine whether the communication requires a response, payment or professional review.
OTP timing and resend checklist
- Use the mobile number you entered on the form and wait for the six-digit message.
- Check that you are entering the newest OTP if you requested a resend.
- Submit it within the stated 15-minute validity period.
- Stay within the three permitted entry attempts.
- If the code expires or attempts are exhausted, request a new OTP and restart with the latest code.
The mobile number does not have to match the number registered on the e-Filing portal, but it must be accessible to you at the time of verification. No one assisting you needs to know the code.
A practical decision path
- Have you reached the official portal independently? If not, close the message link and start from the official homepage.
- Does the communication show a DIN? If yes, use the DIN route and copy the complete number. If not, use PAN and the printed notice details.
- Did the OTP arrive? Enter the newest six-digit code within 15 minutes and stay within three attempts.
- Did the portal find a record? Compare the returned document number and issue date with the communication.
- Did it say “No record found”? Recheck every field and repeat the search. If the matter is consequential, contact the Department through an independently obtained official channel or seek professional advice.
- Does the notice require action? Treat response, payment and interpretation as separate steps; authentication alone does not complete them.
Information to keep with your records
For a clean audit trail, retain the original notice or order, the date you received it, the date you authenticated it, the method used (PAN details or DIN), and the result displayed by the portal. If you later contact the Department or a tax professional, these details make it easier to explain exactly what was checked and when. Portal labels and procedures can change, so consult the live official pages before acting on a future communication.
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Frequently asked questions
Do I need to log in to verify an Income Tax notice?
No. The Department says Authenticate Notice / Order issued by ITD is a pre-login service available to registered and unregistered users.
Must I use the mobile number registered on my e-Filing account?
No. The Department’s FAQ says the number used for authentication need not be the number registered on the e-Filing portal. It must, however, be a number you can access for the OTP.
Can I verify a notice with only a partial DIN?
Use the complete DIN shown on the communication. The authentication manual describes the DIN route as requiring the Document Identification Number; guessing from a partial number can produce a no-record result.
What happens after three wrong OTP attempts?
The manual states that the OTP permits three entry attempts. If you need another try, request a resend and use the newly generated OTP within its 15-minute validity period.
Does a successful match mean I have replied to the notice?
No. Authentication only checks the Department’s issuance record. Replying through an applicable Comply to Notice workflow, paying a demand or taking another action remains separate.
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Does “No record found” prove the notice is fraudulent?
Not by itself. The message means that the supplied criteria did not find a record. Recheck the PAN, document type, year type, year, issue date or complete DIN. For a consequential matter, contact the Department through an independently reached official channel or obtain professional advice.
What if a communication dated after 1 October 2019 has no DIN?
The Department’s FAQ says communications issued on or after 1 October 2019 should carry a unique DIN and says a communication without one is invalid and need not be answered. Treat this as the Department’s published guidance, verify the document through the official service, and seek advice where the consequences are significant.
Can the authentication service tell me whether the tax demand is correct?
No. It confirms an issuance record, not the merits of the calculation, the deadline, the amount due or the legal response. Read the notice and use the appropriate official process for any required action.
Frequently Asked Questions
How do I verify an income tax notice without logging in?
Open the official Income Tax e-Filing portal, choose Authenticate notice/order issued by ITD, select PAN details or DIN, enter the requested information and verify the six-digit OTP.
Is the mobile number registered with e-Filing mandatory?
No. The Department says you may use another accessible mobile number for the OTP.
What does “No record found” mean?
The supplied criteria did not locate a record. Recheck every field and seek an independently obtained official contact channel or professional advice if the notice is consequential.
Does authentication submit my response?
No. Authentication and the separate Comply to Notice response function are different tasks.
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Start from the official e-Filing homepage, use Authenticate notice/order issued by ITD, and choose PAN details or the complete DIN. Enter the newest six-digit OTP within 15 minutes and three attempts. A match confirms a recorded issuance; it does not answer, pay or otherwise resolve the notice. Treat “No record found” as a prompt to recheck the data and obtain independent help when necessary.
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