Got a defective return notice under section 139(9)? You have 15 days to fix it

You filed your income tax return on time, saw the "successfully submitted" screen, and moved on. Weeks later an email from the Income Tax Department lands with the subject line "Communication under section 139(9)." Your return, it says, is defective. Buried in the notice is a deadline that most taxpayers miss on first reading: you have 15 days to fix it. Let the clock run out and the return you filed is treated as if you never filed it at all.

The Scenario

A defective return notice under section 139(9) of the Income-tax Act, 1961 is not a scrutiny notice and it is not a demand. It is the department telling you that the return you submitted is incomplete or internally inconsistent, and giving you a short window to correct it. As the Income Tax Department's own e-Filing guidance explains, a return is treated as defective for incomplete or inconsistent information in the return or its schedules, and the notice is issued to your registered email or by post, viewable on the e-Filing portal at incometax.gov.in.

The most common trigger is a mismatch between income and tax credit. Suppose you claimed a Tax Deducted at Source (TDS) credit of Rs 1,00,000 that appears in your Form 26AS, but you disclosed only part of the salary against which that TDS was deducted. The system flags it: you are asking for credit on income you have not fully offered to tax. Other frequent defects are gross receipts declared under a business head without the mandatory profit-and-loss and balance-sheet fields, tax payable remaining unpaid at the time of filing, or a name in the return that does not match the PAN database.

The 15-day countdown starts from the date you receive the intimation, or the period specified in the notice itself. That period is fixed by statute, not by the assessing officer's mood, and the portal timestamps both the issue date and your response. Miss it and section 139(9) is unambiguous about the consequence, as the next section sets out.

Statutory Answer

Section 139(9) of the Income-tax Act, 1961 reads that where the Assessing Officer considers the return furnished to be defective, he may intimate the defect to the assessee and give an opportunity to rectify it "within a period of fifteen days from the date of such intimation or within such further period which, on an application made in this behalf, the Assessing Officer may in his discretion allow." The full text is available on the official statute repository at indiacode.nic.in.

Two operative rules follow directly from that language. First, the base window is exactly 15 days. Second, the proviso gives the officer discretion to allow a longer period if you apply for it, which the e-Filing portal exposes as a Seek Adjournment option when you open the notice. You are not automatically entitled to the extension; you must request it, and it is granted at discretion.

The sting is in the tail of the sub-section: if the defect is not rectified within the 15 days or the extended period, "the return shall be treated as an invalid return and the provisions of this Act shall apply as if the assessee had failed to furnish the return." An invalid return is a legal nullity. The table below sets out what that costs you.

The point worth internalising is that the loss of the right to carry forward losses is permanent for that assessment year. If you had a business or capital loss you were counting on to shelter next year's gains, an invalid return quietly deletes it. There is no appeal that restores a carried-forward loss lost to a missed 139(9) deadline.

Worked Resolution

Take a concrete salary case for FY 2025-26 (assessment year 2026-27). Rohan, a salaried professional, has a gross salary of Rs 14,00,000 with TDS of Rs 1,00,000 already deducted and reflected in his Form 26AS. When filing under the new tax regime he mistakenly reported only Rs 9,00,000 of salary income while claiming the full Rs 1,00,000 TDS credit. The portal issues a section 139(9) notice: TDS credit claimed exceeds the tax attributable to the income offered.

To resolve it, Rohan must correct the return to declare the full Rs 14,00,000. Under the FY 2025-26 new regime, the standard deduction is Rs 75,000, leaving taxable income of Rs 13,25,000. The slab computation, using the notified FY 2025-26 new-regime rates, works out as follows.

Because Rohan's taxable income of Rs 13,25,000 exceeds the Rs 12,00,000 threshold, the section 87A rebate (which is Rs 60,000 in the new regime for FY 2025-26 when total income is within Rs 12,00,000) does not apply here. Adding the 4% health and education cess of Rs 3,150 gives a total tax liability of Rs 81,900. Against TDS of Rs 1,00,000 already paid, Rohan is due a tax refund of Rs 18,100, not a demand. Correcting the defect actually unlocks money owed to him.

The mechanics of responding are as follows. Log in to incometax.gov.in, open Pending Actions then e-Proceedings, locate the 139(9) notice, and select "Agree" or "Disagree" with the flagged defect. If you agree, you re-file the corrected ITR under section 139(9), quoting the notice's acknowledgement and communication reference numbers, then e-verify it within the same 15-day window. Run the corrected figures through Oquilia's income tax calculator before you submit, and if you are still weighing regimes, the old vs new regime comparison shows which one leaves Rohan better off. A TDS calculator helps you reconcile the credit against Form 26AS so the mismatch does not recur.

One irreversible detail: a submitted response cannot be edited or withdrawn. If you file the corrected return and then spot a further error, you cannot un-send it. So reconcile every figure against Form 26AS and the Annual Information Statement before you click submit. If the filing window for that assessment year is still open, you have a second route: instead of responding to the 139(9) notice you may file a fresh or revised return under section 139(5), which supersedes the defective one. Which route is cleaner depends on how much of the return needs rework and whether the deadline for that year has passed.

FAQ

How many days do I actually get to respond to a section 139(9) notice?

Fifteen days from the date you receive the intimation, or the period specified in the notice, whichever the notice states. Section 139(9) of the Income-tax Act, 1961 fixes this window. You can apply for a longer period using the Seek Adjournment option on the e-Filing portal, which the Assessing Officer may allow at discretion under the proviso to the sub-section.

What happens if I ignore the 15-day deadline entirely?

The return is treated as an invalid return, meaning the law applies as if you never filed. Consequences include interest under sections 234A, 234B and 234C at 1% per month on unpaid tax, denial of carry-forward of losses, loss of specified exemptions, and a possible late-filing fee of up to Rs 5,000 under section 234F if you have to refile after the due date.

Can I file a fresh or revised return instead of responding to the notice?

Yes, provided the filing window for that assessment year is still open. You may file a revised return under section 139(5), which replaces the defective return. If the deadline for the year has already passed, responding to the 139(9) notice within the 15-day window is your only route to keep the original filing date alive.

Can I edit my response once I have submitted it?

No. A submitted response to a section 139(9) notice cannot be edited or withdrawn. Reconcile every figure against Form 26AS and the Annual Information Statement on incometax.gov.in before submitting, because there is no undo.

Where do I actually see and respond to the notice?

The notice is sent to your registered email and, in some cases, by post, and it is always viewable on the e-Filing portal. Log in at incometax.gov.in, go to Pending Actions then e-Proceedings, and open the 139(9) communication to respond online by re-filing the corrected ITR.

Does a defective return notice mean I am being investigated?

No. A 139(9) notice is a procedural correction, not a scrutiny assessment under section 143(2) or a reassessment under section 148. It flags an incomplete or inconsistent return and asks you to fix it. Responding correctly within the window closes the matter without any adverse inference.

Will I still get my refund if my return was defective?

Only after you cure the defect. A refund cannot be processed on an invalid return. As Rohan's case shows, correcting the defect and re-filing within 15 days is often what releases a refund that was stuck, rather than triggering a demand.