A defective return notice under section 139(9) means the Income Tax Department has found your return of income incomplete or internally inconsistent, and it will not be processed until the defect is removed. You normally get 15 days from the notice to respond. Leave the defect uncorrected without getting more time and the return is treated as invalid, which in law is the same as never having filed it.
The response is filed on the e-filing portal, not by email or letter. You either agree and upload a corrected return, or disagree and explain why the return is already complete. Choosing wrongly, or uploading a "corrected" return that still has the same gap, is how a simple notice turns into a lost return.
Which law governs your notice
Returns for assessment year 2026-27 (income of FY 2025-26) and earlier years are governed by the Income-tax Act, 1961. For these, the power to treat a return as defective sits in section 139(9) of the Income-tax Act, 1961. That sub-section lets the Assessing Officer intimate the defect and allow 15 days from the date of intimation, or a further period on your application. Where the defect is still not removed, the return is treated as invalid and the Act applies as if no return had been furnished.
The Income-tax Act, 2025 applies from 1 April 2026, so returns for tax year 2026-27 (filed in 2027) will fall under the new Act. The equivalent power is section 263(7) of the Income-tax Act, 2025, with the same 15-day period, the same option to ask for more time and the same invalid-return consequence. One difference in drafting: the new section treats a return as defective if it does not meet the conditions "as may be prescribed", so the list of defects moves into the rules instead of an Explanation in the Act. Quote the section printed on your notice in any reply.
What the department counts as a defect
Under the 1961 Act, the Explanation to section 139(9) lists conditions that a return must satisfy. In plain terms, a return is defective unless:
- the schedules and columns showing income under each head, gross total income and total income are filled in;
- it carries a statement of the tax computed on that income;
- where the accounts must be audited under section 44AB, the audit report has been furnished;
- it is backed by proof of tax deducted or collected at source, advance tax and self-assessment tax claimed;
- where regular books are kept, the balance sheet and profit and loss account are filled in, and where books are not kept, the turnover, gross profit, expenses and net profit details are given.
The portal's FAQs on responding to a defective notice name the defects that actually trigger most notices. They are a better guide to what went wrong than the statute.
| Defect shown in the notice | What usually caused it | How the corrected return fixes it |
|---|---|---|
| TDS credit claimed but the related income not offered | Interest, rent or fee income left out while the TDS on it was claimed from Form 26AS | Report the income in the right head, or claim only the TDS that belongs to income offered this year |
| Gross receipts in Form 26AS exceed receipts shown in the return | A professional or contractor reported net fees, or a receipt credited by the payer in March was booked in the next year | Show the full gross receipts, or carry forward the TDS relating to the receipt not offered |
| Gross total income nil, but tax computed and paid | Income was entered in the wrong schedule, so the totals never picked it up | Move the income to the correct schedule so the totals and tax computation agree |
| Name in the return differs from the name in PAN records | Spelling or initials entered differently from the PAN database | Use the name exactly as it appears in PAN data |
| Business or professional income shown, balance sheet and P&L blank | A regular-books case filed without filling the financial statement schedules | Fill the balance sheet and profit and loss schedules, or the no-account case details where they apply |
Step by step: responding on the e-filing portal
The portal's user manual for e-Proceedings sets out the screens. The sequence below follows it, with the decisions you need to take at each stage.
- Log in and go to Pending Actions > e-Proceedings. Select Self, then click View Notice against the defective notice under section 139(9).
- Open the notice PDF and download it. Note the error description and the date of the notice. Your 15 days run from the intimation, so calendar the date before doing anything else.
- Compare the error description with Form 26AS, the Annual Information Statement and the return you filed. Work out which figure the system is objecting to before you open the return utility.
- Click Submit Response and choose Agree or Disagree.
- To agree, prepare the corrected return in the offline utility for the correct ITR form, generate the JSON, select the ITR type on the response screen and upload that JSON.
- To disagree, write the reason in the text box. State the figures and the schedule where the income or tax already appears.
- Tick the declaration and submit. Keep the Transaction ID shown on screen; a confirmation also goes to your registered email.
Two portal rules matter here. A response cannot be updated or withdrawn after submission, so review the corrected JSON line by line before uploading. And you may authorise another person to respond on your behalf, which is how a tax practitioner usually handles it for a client.
Agree or disagree: deciding which response fits
Agree when the return really is missing something: income left out, a schedule left blank, a name mismatch, a wrong ITR form. The corrected return has to cure the specific defect named in the notice; changing other figures does not help if the flagged gap remains.
Disagree only when you can point to the place in the filed return where the supposedly missing item already sits. An example is TDS on interest where the interest was in fact reported, but under a different line of the other-sources schedule. Write a short factual reply: the amount, the schedule and the line. A disagreement that just says "return is correct" gives the processing officer nothing to verify.
When in doubt, agreeing with a corrected return is usually the safer course. A rejected disagreement leaves you with less time and the same defect.
Illustration: a freelancer's receipt booked in the wrong year
This is an illustration with assumed figures. Neha, a resident design consultant, filed her return for AY 2026-27. Form 26AS showed professional receipts of ₹8,40,000 from three clients, with TDS of ₹84,000. One client had credited a ₹2,40,000 invoice in its books on 31 March 2026 and deducted ₹24,000 of TDS then, but Neha received the money in April 2026 and, following her cash-basis accounts, counted it as income of FY 2026-27. Her return showed receipts of ₹6,00,000 but claimed the full ₹84,000 TDS.
She received a defective notice dated 4 November 2026 citing "gross receipts in Form 26AS higher than receipts in the return". Fifteen days from that date takes her to 19 November 2026.
She has two honest fixes. Her method of accounting decides which one applies, not convenience.
- If the ₹2,40,000 is income of FY 2025-26 under her method, she reports gross receipts of ₹8,40,000 and keeps the full ₹84,000 TDS claim.
- Where the receipt genuinely belongs to FY 2026-27, she keeps receipts at ₹6,00,000, claims ₹60,000 of TDS (₹84,000 minus ₹24,000) and carries the ₹24,000 forward in the TDS schedule to the year in which the ₹2,40,000 is offered.
The second route rests on rule 37BA(3) of the Income-tax Rules, 1962, which gives TDS credit for the assessment year in which the related income is assessable. Claiming all the TDS while offering only part of the income is exactly what the system flags. Either way, the corrected return now matches its own claim, and the defect disappears.
If the 15 days are about to run out
The FAQs say you can ask for an adjournment or extension of the response time, and section 139(9) allows the officer to grant a further period on your application. Ask before the 15 days end, not after, and give a concrete reason such as waiting for a corrected TDS statement from a deductor.
Missing the date is not always fatal. Under the proviso to section 139(9), where the defect is removed after the period but before the assessment is made, the Assessing Officer may condone the delay and treat the return as valid. "May" is the operative word: condonation is discretionary, so treat it as a fallback rather than a plan.
A return finally treated as invalid carries the usual consequences of a missing return. The portal FAQs list interest, penalty, loss of the right to carry forward losses and loss of exemptions that depend on a valid return filed in time.
Filing a fresh or revised return instead of responding
The FAQs allow one alternative. While the time for filing a return for that assessment year is still open, you can file a fresh or revised return instead of responding to the notice. Once that time has passed, the only remedy is the response under section 139(9); without it, the return is treated as invalid or not filed for that year.
Section 139(5), as substituted with effect from 1 March 2026, now lets a revised return be filed until the end of the relevant assessment year or completion of assessment, whichever is earlier. A revision filed late in that window attracts a fee under section 234-I: ₹1,000 where total income does not exceed ₹5 lakh and ₹5,000 in other cases. When the notice arrives while the revision window is open, compare that fee and timing against a direct response, which costs nothing.
Checks before you upload the corrected JSON
- The ITR form is the one the notice expects; a return filed in ITR-1 by someone with business income needs ITR-3 or ITR-4.
- Every TDS entry claimed has its income offered in the same return, or is carried forward to the right year.
- Gross receipts are at least the amount reported against your PAN in Form 26AS, unless you can explain the difference in the TDS schedule.
- Totals flow through: the income schedules, gross total income, total income and tax computation all agree.
- The name, PAN and assessment year match the original return and the notice.
- Any balance tax arising from the correction is paid before upload, so the corrected return does not create a fresh demand.
After submission, track the return under the filed-returns view on the portal. Once the corrected return is processed, an intimation follows, and any refund or demand is computed on the corrected figures, not the original ones.
