What are the income tax notice types and sections?

What is an income tax notice?

An income tax notice is a communication issued under a named section of the Income-tax Act, 1961, asking you to act on your return or your tax position. The section number on the notice tells you what kind of action is expected and how much time you have. Reading that number first is the fastest way to know whether a notice is routine or serious.

Most notices now arrive through the income tax portal and your registered email, and are answered using the e-Proceedings service. A notice is not the same as a penalty. Many are procedural, and answering on time is what keeps them procedural.

Which sections do notices come under?

The common income tax notices are issued under sections 143(1), 139(9), 142(1), 143(2), 148, 156, and 245 of the Income-tax Act, 1961. Each does a different job. The table names the section and what it signals.

Which income tax notices need a reply?

Not every notice needs a reply, but most do. A section 143(1) intimation that confirms your figures needs no action, while one that shows a prima-facie adjustment under section 143(1)(a) invites a response before the change is finalised. Every other notice in the common set carries a response window that you should meet.

The safe habit is to open each notice, find the response due date on the portal, and treat that date as binding. A missed 139(9) window can invalidate the return, and a missed 142(1) or 143(2) response can lead to a best-judgment assessment under section 144.

Does a 143(1) intimation always need an answer?

No. A section 143(1) intimation that agrees with your return needs no reply and simply closes the processing. An intimation that carries a prima-facie adjustment under section 143(1)(a) does need one, because the adjustment is proposed before it is made and the portal gives a stated response window to agree or disagree.

What happens if I miss the response window?

Missing a response window converts a query into an outcome. A missed section 139(9) reply within 15 days can make the return invalid, and a missed section 142(1) or 143(2) reply lets the Assessing Officer complete a best-judgment assessment under section 144 on the material already on record.

What is a 139(9) defective return notice?

A section 139(9) notice means your filed return has a defect and gives you 15 days from the date of the notice to fix it. The portal FAQ confirms the notice is sent to your registered email and can be viewed after logging in to the e-filing portal. Common defects include a mismatch between tax paid and tax claimed, or missing schedules the return required.

If you do not respond within the window, the return can be treated as invalid, which is the same as not having filed at all. The Assessing Officer can extend the 15-day period on a request, so ask for time rather than let the return lapse.

What does a 143(2) notice mean?

A section 143(2) notice opens a scrutiny assessment, meaning the department will examine your return in detail rather than just process it. It is often preceded by a section 142(1) inquiry that asks for information. A 143(2) notice must be served within the time limit set in the section, so check the service date against that limit.

Answer a 143(2) with documents, not assertions. Scrutiny responses go through e-Proceedings, and each query usually has its own due date. Treat the notice as a request for evidence supporting the figures you already reported.

How do I reply through e-Proceedings?

1. Log in to the income tax portal and open Pending Actions, then e-Proceedings.
2. Select the notice, read the section number and the response due date, and note what is being asked.
3. Prepare your response and attach the supporting documents in the formats the portal accepts.
4. Submit before the due date. For a 139(9) defective return, correct the return within the 15-day window using the response option provided.
5. Save the acknowledgement. A submitted e-Proceedings response cannot be withdrawn, so review it before you submit.

Why do notice replies go wrong?

• Treating every notice as a penalty. A 143(1) intimation is usually just the processing result.
• Missing the 15-day window on a 139(9) defective return and letting the return become invalid.
• Confusing a 142(1) inquiry with a 143(2) scrutiny notice, and answering the wrong one late.
• Letting a section 245 refund adjustment go unopposed when the earlier demand is disputed.
• Replying by email or letter when the notice requires an e-Proceedings submission on the portal.

Where are notice rule changes published?

Notice procedure changes are published as CBDT circulars, e-Filing portal advisories, and amendments to the assessment sections through the Finance Act, and the reassessment rules under sections 148 and 148A have moved repeatedly. Complied AI keeps CBDT updates in one feed so you can open the source behind a change, then read the section text on India Code beside it when the exact wording of a notice provision matters.