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Income Tax

Income Tax Notices: Types, Reasons & How to Respond (2026 Guide)

Received an income tax notice? Don't panic. This guide explains all types of IT notices — 139(9), 143(1), 148, 142(1) — why they're issued and exactly how to respond.

May 20, 202613 min read

Receiving an income tax notice can be alarming, but most notices are routine — generated automatically by the CPC (Centralized Processing Centre) and don't always mean you've done something wrong. Understanding the type of notice and responding correctly is key. Here's a complete guide to all types of income tax notices and how to handle them.

Most Common Income Tax Notices and Their Meaning

SectionNotice NameReason IssuedResponse Window
139(9)Defective Return NoticeITR has errors/missing information (no tax/income mismatch)15 days
143(1)Intimation LetterReturn processed; tax demand or refund confirmation30 days (for demand)
143(2)Scrutiny NoticeDetailed scrutiny of return selected for examinationCase-specific
142(1)Inquiry NoticeAdditional documents/information sought before assessmentAs specified
148Reassessment NoticeIncome believed escaped assessment in past years30–45 days
156Tax Demand NoticeOutstanding tax payable after assessment30 days
245Set-off of Refund Against DemandPast demand to be adjusted against current refund30 days
131SummonsAppear or produce books of accounts for investigationAs specified

Notice u/s 139(9) — Defective Return

This is an automated notice when the ITR has inconsistencies. Common reasons: taxes paid shown in return don't match Form 26AS; income not filled in proper schedule; balance sheet doesn't tally. To respond: log in to income tax portal → e-Proceedings → Response to Outstanding Demand → respond with corrections within 15 days. If not responded within 15 days, the return may be treated as not filed.

Notice u/s 143(1) — Intimation (Demand or Refund)

This is NOT a scrutiny notice. It's an automated summary of how the CPC processed your return. If it shows a DEMAND: verify the computation, check for arithmetical errors or incorrect TDS credit. If you agree, pay within 30 days. If you disagree, file a rectification request under Section 154 with evidence. If it shows a REFUND: the refund will be credited to your bank account within 4–6 weeks.

Notice u/s 143(2) — Scrutiny Notice

This is a serious notice indicating your return has been selected for detailed examination. The AO (Assessing Officer) will ask for documents to verify income, deductions, and exemptions. You must appear (or authorize a CA/tax consultant through Form 2848) and submit requested documents. Ignoring it leads to ex-parte assessment — income computed by AO without your input, almost always resulting in a demand.

Notice u/s 148 — Income Escaped Assessment

Issued when the AO has reason to believe income has not been disclosed or under-reported. From AY 2022-23 onwards, the limitation period is 3 years (extended to 10 years if escaped income exceeds ₹50 lakh). Respond with a fresh return or submit reasons why reassessment is not warranted. This notice requires expert CA/tax counsel — do not respond without professional help.

How to Respond to Any Income Tax Notice

  1. Log in to incometax.gov.in using PAN and password
  2. Go to e-Proceedings section in the dashboard
  3. Find the pending notice — click to view the notice document
  4. Select 'Submit Response' and choose the appropriate response type
  5. Upload supporting documents (if required — PDFs, Form 26AS, bank statements)
  6. Submit the response before the deadline
  7. Download acknowledgement/response receipt for your records
Note: Always respond to notices through the e-Proceedings section on the income tax portal — never respond by post or email unless the notice specifically instructs otherwise. Maintaining portal-generated acknowledgement is crucial for any future disputes.
Tags
Income Tax Notice
Tax Notice Reply
Section 143
Section 148
Scrutiny
Tax Compliance

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