HomeBlog Income Tax Section 148 Reassessment Notice: The Complete 2026...
⚖️
Income Tax

Section 148 Reassessment Notice: The Complete 2026 Defence Guide

By CA Rajat Agrawal, Chartered Accountant · Tax Litigation, EaseValue Published 03 Jul 2026 Updated 03 Jul 2026 11 min read

A Section 148 notice means the Income-Tax Department believes income chargeable to tax has escaped assessment in an earlier year and wants to reopen it. Before issuing it, the Assessing Officer (AO) must first serve a show-cause notice under Section 148A(b), consider your reply, and pass an order under Section 148A(d) with prior approval under Section 151. For notices issued from 1 September 2024, an year generally cannot be reopened beyond 3 years 3 months from the end of the assessment year — extended to 5 years 3 months only where the escaped income is likely to be ₹50 lakh or more. A wrongly issued notice can be challenged on jurisdiction, limitation, sanction and "change of opinion" grounds.

What is a Section 148 notice?

Section 147 of the Income-tax Act empowers the AO to assess or reassess income that has "escaped assessment". Section 148 is the notice that starts that process — it requires you to file a return for the relevant assessment year (AY). Reassessment is not a routine review; the AO must have specific information suggesting escaped income (for example an AIS/SFT mismatch, a high-value transaction, information from another proceeding, or an audit objection).

The 148A procedure — step by step

Since the Finance Act, 2021 (and continued in the 2024 regime), the AO cannot jump straight to Section 148. The sequence is:

  • Section 148A(b) — show-cause notice. The AO gives you information relied upon and a minimum opportunity (typically 7 days or more) to explain why a notice should not be issued.
  • Your reply. You respond on facts and law — this is your single most important defence opportunity.
  • Section 148A(d) — order. The AO passes a reasoned order deciding whether it is a "fit case" to reopen, after obtaining approval under Section 151.
  • Section 148 — the reassessment notice. Only if the 148A(d) order is affirmative.

Skipping the 148A(b) stage, or a mechanical/non-speaking 148A(d) order, is itself a ground of challenge.

Reopening time limits (notices from 1 September 2024)

The Finance Act, 2024 shortened the reassessment window:

  • Normal limit: no Section 148 notice after 3 years 3 months from the end of the relevant AY.
  • Extended limit: up to 5 years 3 months from the end of the AY, and only where the AO has evidence that income escaping assessment is likely to be ₹50 lakh or more for that year.

The earlier 10-year window (for the old regime up to 31 August 2024) no longer applies to fresh cases. An AY-wise deadline matrix should always be checked before replying — a time-barred notice is void.

Approval under Section 151 (sanction)

Reassessment requires sanction from the specified authority under Section 151. Whether the correct authority approved, and whether the approval was applied properly (not a mechanical "Yes, I am satisfied"), is frequently decisive in litigation.

How to reply to a 148A(b) show-cause notice

  • Read the "information" carefully. Ask what exactly triggered the notice — AIS, SFT, search material, another taxpayer's statement.
  • Reconcile, don't argue blindly. If the "escaped income" is already disclosed, or is a duplicate/gross-vs-net figure, prove it with documents.
  • Take limitation and jurisdiction points early where they exist.
  • Keep it documented. Everything filed at this stage forms the record for any later appeal.

Grounds to challenge an invalid Section 148 notice

  • No fresh tangible material / "change of opinion". Reopening merely to re-examine what was already considered is not permitted.
  • Time-barred. Beyond the 3yr-3mo / 5yr-3mo limit, or below the ₹50 lakh threshold for the extended window.
  • Defective sanction under Section 151. Wrong authority or non-application of mind.
  • Breach of the 148A procedure. No proper show-cause, or a non-speaking 148A(d) order.
  • Jurisdictional error. Notice by an AO without jurisdiction over the assessee.

The Supreme Court in Union of India v. Ashish Agarwal (2022) treated the batch of old-law Section 148 notices issued in 2021 as Section 148A(b) show-cause notices, and Union of India v. Rajeev Bansal (2024) settled the limitation and TOLA issues arising from that transition. These decisions remain central to reassessment disputes.

Reassessment for NRIs and foreign assets

Non-residents commonly receive reassessment notices on property sale proceeds, unreported foreign assets (Schedule FA), or AIS mismatches. Foreign-asset cases can also attract the Black Money (Undisclosed Foreign Income and Assets) Act, 2015, which has its own, far harsher timeline and penalties — these must be handled with particular care.

What happens if you ignore a Section 148 notice

  • Best-judgment assessment under Section 144 — the AO estimates your income, usually adversely.
  • Penalty under Section 270A — 50% of tax for under-reporting, 200% for misreporting.
  • Interest under Sections 234A/B/C, and in serious cases prosecution.

Ignoring a notice almost always converts a manageable position into a litigated demand. The window to reply is short — act on it immediately.

How EaseValue defends reassessment cases

We review the "information", check limitation and sanction, draft the 148A(b) reply, and — where the notice is bad in law — build the record for a writ or appeal. For HNI, NRI and foreign-asset matters we work with counsel end-to-end, from show-cause to CIT(A)/ITAT.

Frequently asked questions

What is the time limit for a Section 148 notice in 2026?
For notices issued from 1 September 2024, the normal limit is 3 years 3 months from the end of the relevant assessment year, extended to 5 years 3 months only where escaped income is likely to be ₹50 lakh or more.
Can a Section 148 reassessment notice be challenged?
Yes. Common grounds include the notice being time-barred, absence of fresh material (change of opinion), defective sanction under Section 151, breach of the Section 148A procedure, and jurisdictional error.
What is a Section 148A(b) notice?
It is the show-cause notice the AO must issue before Section 148, giving you the information relied upon and an opportunity to explain why reassessment should not be initiated. Your reply here is the key defence step.
What is the difference between a 143(2) and a 148 notice?
A 143(2) notice starts scrutiny of a return already filed within the normal timeline. A 148 notice reopens a past year on the basis that income escaped assessment — a higher threshold with its own procedure and time limits.
Do NRIs receive reassessment notices?
Yes — commonly on property sale proceeds, foreign assets (Schedule FA) or AIS mismatches. Foreign-asset cases can also trigger the Black Money Act, 2015, which is far more serious and time-sensitive.
What happens if the escaped income is below ₹50 lakh?
Then only the normal 3 year 3 month window is available (from 1 September 2024). A notice for such a year issued after that period is time-barred and can be quashed.
#section 148 #reassessment #148A #income tax notice #income escaping assessment #section 147
C
CA Rajat Agrawal
Chartered Accountant · Tax Litigation, EaseValue · Reviewed 03 Jul 2026
Written and reviewed by EaseValue's income-tax litigation team. We represent individuals and businesses in scrutiny, reassessment, and appeal proceedings before the AO, CIT(A), NFAC and ITAT.
Disclaimer: This article is general information on Indian income-tax law, current as of the date shown, and is not legal or tax advice. Statutory provisions, deadlines and forms change — including under the Income-tax Act, 2025 (effective April 2026). Always confirm the position for your facts with a qualified professional before acting.

Facing this yourself?

Get a confidential case review from a Chartered Accountant. We handle notices, reassessment and appeals end-to-end.

💬 Book a case review 📞 Call a CA See how we help →
💬