Summary of this article
Defective ITR notice under Section 139(9) requires timely taxpayer response
TDS mismatches, missing income, and incomplete disclosures can trigger defective returns
Taxpayers usually get 15 days to correct defects or explain discrepancies
Ignoring a defective return notice can make the ITR invalid
Filing the income-tax return (ITR) does not always mean that the process is over. For assessment year (AY) 2026-27, the Income Tax Department (ITD) may inform some taxpayers that there is a problem with the return they filed.
That can sound worrying, but a defective return is essentially one where the department has found something that needs to be corrected or explained.
1 August 2026
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The notice is generally issued under Section 139(9) of the Income-tax Act, 1961. It gives the taxpayer an opportunity to set the matter right within the time allowed.
What Could Be Wrong With The Return?
The problem could be a missing entry, a mismatch, or information that has not been filled in properly.
For instance, suppose tax deducted at source (TDS) has been deducted on a particular income, and the taxpayer has claimed credit for that TDS. If the income itself has not been shown in the return, the department may flag the difference.
Form 26AS can also throw up such issues. If the receipts appearing there are more than the amount reported by the taxpayer under the corresponding head, the return could come under scrutiny, according to a recent report by Mint.
Those who have business or professional income need to watch out for incomplete financial details. Leaving out information from the balance sheet or profit and loss account, where such details are required, may also result in a defective return.
Sometimes, however, the problem is far more basic. Even a difference between the name entered in the ITR and the name recorded against the permanent account number (PAN) may be noticed during processing, according to a recent report by Mint.
The communication should state what the department has found. It could reach the taxpayer through the e-filing portal, registered email address or by post.
How Soon Should You Respond?
A taxpayer is usually given 15 days from the date of receiving the notice to correct the defect or reply to it.
Still, do not work only on that assumption. Read the notice and note the date mentioned there. That is the timeline that matters.
If there is a genuine difficulty in responding within the given period, the taxpayer can seek more time through the prescribed process.
Before making any changes, first see exactly what has been flagged. There is no need to reopen the entire return if the notice relates to one specific issue.
What If The Notice Is Ignored?
This is where delay can become a problem.
If the taxpayer does not correct the defect within the time available, the return can be treated as invalid. In practical terms, it may then be considered that a valid return was not filed for that assessment year.
Other consequences may follow depending on the case. Interest or penalty could arise, and the taxpayer may also face difficulty in carrying forward certain losses or claiming some tax benefits.
Where the applicable filing window is still open, filing a fresh or revised return may be possible. The better approach, however, is to deal with the defective-return notice when it comes and close the issue within the deadline.
FAQs
1. Why can an ITR be treated as defective?
Missing information, TDS-income mismatches, differences with Form 26AS, or incomplete financial details can lead to a defective return notice.
2. How much time do taxpayers get to respond?
Taxpayers are generally given 15 days to correct the defect or reply, though they should follow the deadline mentioned in the notice.
3. What happens if a defective ITR notice is ignored?
The return may be treated as invalid, which can also affect the carry-forward of certain losses and some tax benefits.
