Defective return notice under Section 139(9)

What this section is

If the Assessing Officer considers a return to be defective — common reasons include missing schedules, mismatched figures with Form 26AS, or balance sheet items not filled when required — a notice under Section 139(9) is issued asking the taxpayer to rectify the defect within 15 days.

When it is issued

Typically within a few months of filing the return, especially where the e-filing system flags a discrepancy automatically.

What you should do

1. 1Identify the exact defect mentioned in the notice (the e-filing portal lists the error code).
2. 2Log in to the e-filing portal → Pending Actions → e-Proceedings → Respond.
3. 3Either upload a corrected XML or agree with the disagreement and explain why.
4. 4Where you genuinely missed something, file a fresh return under the same window.

Documents typically needed

• Original return acknowledgment
• Form 26AS / AIS / TIS
• Books of account (where business income is reported)
• Tax audit report (if applicable)

Common mistakes

• Ignoring the 15-day window — the return is then treated as if it was never filed.
• Filing a revised return instead of responding to the defect.
• Replying without correcting the actual defect — the cycle then repeats.