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Income Tax Notice Types: 143(1), 139(9), 148 — What Each Means & What To Do

Taxwapsi Editorial Team4 June 2026 3 min read

An income tax notice in your inbox triggers panic — usually unnecessarily. Most notices are automated, many are favourable (refunds!), and almost all are manageable if you respond correctly within the deadline. Here's the decoder.

Section 143(1) — Intimation (most common)

What it is: Automated processing result of your return. Three outcomes: no change, refund due, or demand from a mismatch.
What to do: If it matches your filing — relax, file it away. If there's a demand you disagree with (commonly TDS mismatch), file a rectification u/s 154 or respond on the portal. If you agree, pay within 30 days to stop interest.

Section 139(9) — Defective return

What it is: Your return has a defect — wrong form, missing schedules, unpaid self-assessment tax.
Deadline: 15 days. Fix and respond, or the return is treated as never filed — with all late-filing consequences. This is the notice that punishes ignoring it the hardest, fastest.

Section 142(1) — Inquiry before assessment

What it is: The officer wants documents/details — or wants you to file a return you skipped.
What to do: Respond with exactly what's asked, on the e-proceedings portal, within the stated time. Non-compliance enables best-judgment assessment u/s 144 and penalties.

Section 143(2) — Scrutiny

What it is: Your return is selected for detailed examination — limited (specific issues) or complete.
What to do: This is professional territory. Faceless assessment means everything is written submissions — quality of drafting decides outcomes. Organise documents issue-wise and respond to every point.

Section 148 — Income escaping assessment

What it is: The department believes you under-reported in a past year — often triggered by AIS/SFT data: property purchases, large deposits, big share trades.
What to do: The 148A process gives you a chance to explain before reassessment opens. A strong, evidence-backed reply at this stage can close the matter entirely — make it count.

Section 245 — Refund adjustment

What it is: Your refund is proposed to be set off against an old outstanding demand.
What to do: Don't auto-accept — old demands are frequently wrong or already paid. Disagree on the portal with proof within the window.

The 5 rules for every notice

  1. Verify it's real: Every genuine notice has a DIN — authenticate it on the e-filing portal.
  2. Note the deadline first. Everything else is secondary.
  3. Never reply casually (calls/emails to "explain") — informal admissions hurt later.
  4. Reconcile AIS/26AS — most notices are mismatches you can document away.
  5. Escalate complexity early: 143(2) and 148 are not DIY territory.

Got one right now? Send it to us — an expert decodes it free, then drafts and files the response within your deadline: Income Tax Notice Reply from ₹2,999. Prevention is cheaper: returns filed with AIS reconciliation rarely see notices at all.