Section 139(9)Defective Return Notice
Section 139(9) is the provision under which the department tells you your return is incomplete and gives you a limited window to fix it before the return is treated as never filed.
In short
- A defect is not a rejection, but ignoring it becomes one. An uncorrected return is treated as though it was never filed.
- The response window is stated in the notice, commonly fifteen days, and an extension can be requested from the Assessing Officer.
- Treating the return as never filed cascades: you lose the original filing date, which can convert a timely return into a belated one and forfeit loss carry-forward.
- The most common defects are the wrong ITR form, unpaid self-assessment tax, and mismatches between income declared and the TDS claimed against it.
- The correction is filed as a response to the specific notice on the e-filing portal, not as an ordinary revised return.
- Under the Income-tax Act, 2025 this becomes Section 263(7). Section 263 is the consolidated return-filing provision covering the whole of the old Section 139 along with Sections 139D and 194P, so always cite the sub-section: under the 1961 Act, Section 263 was the Commissioner's power of revision and had nothing to do with defective returns.
Who it applies to
- Returns filed with missing or internally inconsistent information
- Assessees who filed the wrong ITR form for their income profile
- Returns where audited accounts were required but not attached, or where tax payable was not paid before filing
How it works
Section 139(9) sits between filing and processing. Where the department finds a return incomplete in one of the ways the section contemplates, it does not reject it outright: it issues a notice describing the defect and gives you a window to put it right. Respond properly and the return is treated as filed on the original date. Let the window pass and the return is treated as never having been filed at all, which is a far more serious outcome than the word 'defect' suggests.
That cascade is what makes the section worth taking seriously. Losing the original filing date can turn a return filed within the due date into a belated one. A belated return cannot carry forward business or capital losses, which for a loss-making year can be an expensive consequence entirely disproportionate to the clerical error that caused it. It can also attract late filing fees that would not otherwise have applied.
The defects themselves are mostly mundane. Filing the wrong ITR form is the single most common: someone with capital gains files ITR-1, or a person with business income files a form that has no schedule for it. Close behind is filing without having paid the self-assessment tax the return itself computes as due, which the system treats as an incomplete return rather than an unpaid one. Then there are mismatches, where income is claimed against TDS credit that does not correspond to any income declared, and cases where audited accounts or specific schedules were required but not furnished.
The response mechanism is specific and easy to get wrong. You reply to the notice itself, through the e-filing portal under the pending actions for e-proceedings, either agreeing that the defect exists and uploading a corrected return in the right form, or disagreeing and explaining why the return is not defective. Filing an ordinary revised return under Section 139(5) instead does not answer the notice, and the original return can still lapse while you believe you have fixed it.
If the deadline in the notice is not workable, ask for an extension rather than letting it expire. The Assessing Officer has discretion to condone the delay and accept a late response, and a request made before the deadline is on far better footing than an explanation offered after the return has already lapsed.
Also searched as: defective return, 139(9) notice, defective return notice, return marked defective, Section 139(9), Section 263(7).
Frequently asked questions
What happens if I ignore a Section 139(9) notice?
The return is treated as never filed. That means losing your original filing date, which can convert a timely return into a belated one, forfeit the right to carry forward business and capital losses, and attract late filing fees. In practice it also means you have to file again from scratch, now late.
How long do I have to respond to a defective return notice?
The notice states the period, commonly fifteen days from receipt. If that is not workable, you can request an extension from the Assessing Officer, and a request made before the deadline expires is treated far more favourably than an explanation offered afterwards.
Should I file a revised return or respond to the notice?
Respond to the notice, through the e-proceedings section of the e-filing portal. A revised return under Section 139(5) is a different mechanism and does not answer a 139(9) notice, so filing one can leave the original return to lapse even though you believe you have corrected it.
What is the most common reason a return is marked defective?
Using the wrong ITR form for your income profile, such as filing ITR-1 when you have capital gains or business income. Close behind are filing without paying the self-assessment tax the return computes as payable, and claiming TDS credit against income that has not been declared in the return.
Worked detail on this section
Current rates, limits, and step-by-step process live in these guides, which are kept updated as the law moves.
Primary sources
Disclaimer
This page explains what a statutory provision does in general terms. It is not a substitute for the bare act, and it is not professional tax or legal advice. Rates, thresholds, and limits change with each Finance Act, and applicability turns on facts specific to you. Confirm anything that affects a real filing with a qualified Chartered Accountant.