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.
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