IT Act 1961: Section 147 (escapement), Section 148A (show cause), Section 148 (reassessment notice), Section 149 (time limits), Section 151 (sanction)
IT Act 2025: Section 279 (escapement), Section 281 (show cause — replaces 148A), Section 280 (reassessment notice — replaces 148), Section 282 (time limits), Section 283 (sanction)
What is Reassessment?
Reassessment is the process by which the Income Tax Department reopens a previously completed assessment to tax income that it believes has ‘escaped assessment’ — meaning income that was not disclosed, was under-assessed, or was incorrectly assessed in the original return. The legal basis is Section 147 of the Income Tax Act, 1961 (Section 279 under the IT Act, 2025). The Department must have ‘reason to believe’ (not mere suspicion) that income has escaped assessment before initiating this process.
Stage 1 — Section 148A [new: Section 281] — Show Cause Notice Before Reassessment: Before issuing a reassessment notice, the Assessing Officer must issue a show cause notice asking why reassessment should not be initiated. You get an opportunity to respond. The AO must then pass an order deciding whether to proceed.
Stage 2 — Section 148 [new: Section 280] — Actual Reassessment Notice: Only if the AO’s order under Section 148A(d) concludes that reassessment is warranted will a formal notice under Section 148 be issued. This triggers the reassessment proceedings proper.
The Section 148A stage is your most powerful opportunity to prevent reassessment entirely. A well-drafted, evidence-backed response at this stage can demonstrate to the AO that no income has escaped assessment and convince him to drop the proceedings before a formal reassessment notice is even issued.
The Two-Stage Process in Detail
Stage 1: Section 148A — Show Cause Notice
AO conducts enquiry
The Assessing Officer first conducts a preliminary inquiry (with prior approval of the specified authority under Section 151) to gather information suggesting that income may have escaped assessment.
Section 148A(b) notice issued
The AO issues a notice under Section 148A(b) providing you with the information or material on the basis of which reassessment is proposed and asking you to show cause why reassessment should not be initiated. The notice specifies a time limit of not less than 7 days and not more than 30 days to respond.
You file your reply
You file a detailed reply with supporting evidence demonstrating that the income in question is either already disclosed in the return, is not taxable, or that the information relied upon by the AO is factually incorrect.
AO considers your reply
The AO must consider your reply before passing any order. He cannot simply ignore your response and proceed.
AO passes order under 148A(d)
The AO passes a speaking order under Section 148A(d), with prior approval of the specified authority, deciding whether it is a fit case for reassessment. If the order is in your favour, proceedings stop. If against you, a Section 148 notice follows.
Stage 2: Section 148 — Reassessment Notice
If the AO’s order under Section 148A(d) concludes that it is a fit case for reassessment, a formal notice under Section 148 is issued. This notice requires you to file a return of income for the year in question (or confirm that the original return already filed may be treated as the return filed in response to this notice). The reassessment then proceeds like a fresh assessment under Sections 143(2) and 142(1), with the AO examining the escaped income.
You may challenge the Section 148 notice and the Section 148A(d) order by filing a writ petition in the High Court if there is a jurisdictional error, or by raising objections during the reassessment proceedings, and ultimately through the appeal route under Section 246A after the reassessment order is passed.
Time Limits for Reassessment
The time limit for issuing a notice under Section 148 (Section 280 under IT Act 2025) is strictly regulated. The limitation period is calculated from the end of the relevant assessment year.
Under IT Act 1961 (for assessments currently in progress)
| Amount of Escaped Income | Time Limit | Notes |
|---|---|---|
| Less than ₹50 lakh | 3 years | From end of relevant assessment year |
| ₹50 lakh or more | 10 years | From end of relevant assessment year; with approval of PCIT/CIT |
| Search / survey cases | 10 years (special) | Under Section 153A/153C; separate procedure applies |
Under IT Act 2025 (for assessments going forward)
| Amount of Escaped Income | Time Limit | Notes |
|---|---|---|
| Less than ₹50 lakh | 3 years | Unchanged from 1961 Act |
| ₹50 lakh or more | 6 years | Reduced from 10 years under the new Act |
Important Update — IT Act 2025: The Income Tax Act, 2025 has reduced the maximum limitation period for reassessment from 10 years to 6 years for cases involving escaped income of ₹50 lakh or more. This is a significant taxpayer-friendly amendment. Cases already initiated under the 1961 Act will continue under the old time limits.
Your Deadline for Section 148A Response
The Supreme Court of India has consistently held that the principles of natural justice require that you must be given an adequate and meaningful opportunity to respond to the show cause notice under Section 148A(b). The notice must contain the specific information or material on which the AO is relying, not just a vague allegation.
If the deadline given is unreasonably short or the notice lacks specifics, you may:
- Write to the AO requesting an extension of time with reasons, citing the volume of records needed to verify or the complexity of the issues raised.
- Challenge the notice in the High Court by way of a writ petition if the notice is vague, lacks the required material, or if the time given is so short as to render the opportunity illusory.
Reply Template — Section 148A Show Cause Notice
To,
The Assessing Officer,
[Ward / Circle / ITO Name],
[Address of AO]
Subject: Reply to Show Cause Notice under Section 148A(b) of the Income Tax Act, 1961
[or Section 281 of the Income Tax Act, 2025]
PAN: [Your PAN]
Assessment Year: [AY]
Notice No.: [Notice Reference Number]
Notice Date: [Date of Notice]
Sir / Madam,
I / We, [Full Name], [Proprietor / Partner / Director / Karta / Individual], of [Name of Firm / Company / HUF, if applicable], having PAN [PAN], refer to your notice dated [Date] issued under Section 148A(b) of the Income Tax Act, 1961, received by me / us on [Date of Receipt].
The notice states that there is information suggesting that income of ₹[Amount stated in notice] has escaped assessment for Assessment Year [AY], on the basis of [brief description of reason stated in notice — e.g., "AIR / SFT data showing cash deposits / property purchase / investment"].
I / We submit as follows:
1. BACKGROUND
The return of income for AY [AY] was filed on [Date of Filing], declaring total income of ₹[Amount]. The return was processed under Section 143(1) vide intimation dated [Date]. [If scrutiny: The return was also taken up for scrutiny assessment under Section 143(2) and the assessment order under Section 143(3) was passed on [Date] determining total income at ₹[Amount].]
2. RESPONSE TO SPECIFIC ALLEGATION
[Address the specific reason for the notice — for example:]
(a) Cash Deposits: The cash deposits of ₹[Amount] in bank account [Account No.] during [period] represent [explain source — e.g., cash withdrawals from the same account, sale of agricultural produce, gifts received from relatives, business receipts already declared, etc.]. Supporting evidence: [list documents — bank statements, cash book, ITR, etc.]
(b) High-Value Purchase: The purchase of [property / shares / FDs] for ₹[Amount] was made from declared and assessed income as detailed below: [table or list of source of funds]. All transactions are duly reflected in the Balance Sheet / ITR for the relevant year.
(c) Third-Party Information: The SFT / AIR data showing [transaction] relates to [explanation]. The same has been duly disclosed in the return at [schedule / item no.] and all taxes have been paid.
3. LEGAL SUBMISSIONS
(a) The information in the notice does not satisfy the threshold of "reason to believe" as required under Section 147. It amounts to mere suspicion or a fishing enquiry, which is not permissible under the settled law (refer: CIT v. Kelvinator of India Ltd. [2010] 320 ITR 561 SC).
(b) The information / material relied upon was available at the time of original assessment / 143(1) processing and does not constitute "new information" warranting reopening.
(c) [Any other legal submission relevant to facts.]
4. DOCUMENTS ENCLOSED
- Copy of ITR for AY [AY] with acknowledgement
- Copy of Form 26AS / AIS / TIS for AY [AY]
- [Bank statements / ledger / sale deed / share certificates — as applicable]
- [Any other relevant document]
In view of the above facts, submissions, and documents enclosed, it is respectfully submitted that no income has escaped assessment for AY [AY] and the proposed reassessment is not warranted. It is therefore prayed that the Assessing Officer may be pleased to drop the proceedings under Section 148A and not issue any notice under Section 148.
Yours faithfully,
[Full Name]
[Designation, if applicable]
[Address]
[Phone / Email]
[Date]
Enclosures: As listed above