Ravi filed his FY 2022-23 ITR in July 2023. Salary, some FD interest, modest equity capital gains. CPC processed it under Sec 143(1) in October 2023. Small refund of ₹4,200 credited. Ravi mentally closed the file.
April 2026 — almost three years later. Email at 11 am: "Notice u/s 148A(b) — Show Cause for issuance of notice u/s 148 of the Income Tax Act, 1961, for AY 2023-24." Attached PDF says the department has "information" that he undisclosed certain capital gains.
What's actually happening, and what should Ravi do in the next 7 days?
- Section 148 empowers the tax department to reopen a prior year's assessment if income has "escaped assessment". Pre-2021, the regime allowed reopening up to 4-6 years routinely, 16 years in fraud cases.
- Finance Act 2021 rewrote the rules: 3-year normal window for reopening. 5-year window if escaped income ≥ ₹50 lakh. 10-year window for serious fraud or undisclosed foreign assets above thresholds.
- New Sec 148A "show cause" step (also from FA 2021): before issuing a 148 notice, the AO must give the taxpayer a Sec 148A(b) notice describing the "information" and offering 7-30 days to respond. AO then passes a Sec 148A(d) order — either dropping the case or formally issuing 148.
- "Information" definition tightened: information from risk-management strategy of CBDT, audit objection, surveys / searches, court orders, treaty exchange data. Cannot be "mere change of opinion" by the AO.
- The new framework is meant to be more taxpayer-friendly + faster + harder to abuse. Practical effect: fewer surprise reopenings, but when they come, the underlying data is harder to challenge.
The pre-2021 vs post-2021 contrast
Pre-2021
Old regime
Reopening up to 4 yrs (general) / 6 yrs (escaped > ₹1L) / 16 yrs (foreign asset). "Reason to believe" standard. AO independently issued 148 without pre-notice step. Frequent "fishing expeditions". High litigation.
Post FA 2021
New regime
3 yr normal. 5 yr if escaped ≥ ₹50L. 10 yr for fraud + foreign assets cases. Sec 148A show-cause step mandatory. "Information" standard with defined source categories. Specified-authority approval required before 148A(d) order.
Time-of-issue rule
3 yrs from end of AY
For 3-yr window: notice can be issued up to 3 years from end of the relevant AY. So FY 22-23 (AY 23-24) — 3 years end on 31 March 2027. Standard cases must be issued before that. Extended windows for higher-amount cases run to 5/10 years.
The Sec 148A four-step process
AO has some "information" suggesting income has escaped assessment. Before issuing a notice, AO may conduct preliminary enquiry (optional). E.g., asking your bank for a statement, asking your broker for trade data.
AO must give taxpayer notice describing the information available + asking why a Sec 148 notice should not be issued. Taxpayer gets 7-30 days to reply via e-Proceedings.
Use the e-Proceedings reply window to: (a) acknowledge if the omission is real → file revised / ITR-U for the year + pay the differential tax; (b) explain if the AO's information is wrong / already disclosed → with supporting docs; (c) request more time / specific clarification.
After considering reply: AO passes order either (i) deciding it's not a fit case → no 148 notice OR (ii) deciding to proceed → formal Sec 148 notice issued. Specified authority (Joint Commissioner / Commissioner) approval needed for the (ii) path.
Taxpayer files revised return for the AY. Proceedings under Sec 147 + 143(3) follow. Demand / refund / penalty depending on outcome. Appeal route: CIT(A) → ITAT → HC → SC.
What Ravi should do (7-day window)
- Log in to e-Proceedings and download the notice + the "information" annexure. The annexure tells you what the department has — broker data, AIS line item, third-party report.
- Compare with your filed ITR. If the information was indeed not disclosed, identify the gap. Common example: equity capital gains that didn't make it into Schedule CG because Ravi confused turnover with profit.
- If you missed something — accept gracefully. File ITR-U for that AY (additional tax 25-70% depending on lateness) + reply to 148A(b) acknowledging the omission. The AO often drops the 148 notice path if the taxpayer voluntarily files ITR-U.
- If the department's info is wrong — reply with documentary evidence. Bank statement showing the transaction was different, broker P&L showing actual gain was already disclosed.
- Engage a CA / lawyer if amount is > ₹2-3L. The reply quality at Sec 148A(b) stage determines whether the AO drops or proceeds. Worth the fees.
Post FA 2021, AO must rely on specific information categories — risk-management flag, audit objection, court order, treaty exchange. "AO's hunch" or "mere change of opinion" no longer sufficient. If the 148A(b) notice doesn't disclose what specific information underlies the case, you can challenge on procedural grounds. Multiple High Courts (Bombay 2022, Calcutta 2023) have quashed 148 notices where the underlying information was vague.
The three time windows explained
- 3 years: normal cases. From end of relevant AY. FY 22-23 (AY 23-24) → notice deadline 31 March 2027.
- 5 years: escaped income ≥ ₹50 lakh (or evidence of similar magnitude). FY 18-19 (AY 19-20) → notice deadline 31 March 2025 (already past for most cases).
- 10 years: serious fraud / undisclosed foreign asset / foreign income / wilful suppression. FY 15-16 (AY 16-17) → notice deadline 31 March 2027 (extended due to TOLA / CO VID provisions in some cases).
For most ordinary taxpayers, the 3-year window applies. Only escalated cases get into 5 / 10-year windows.
What "escaped assessment" actually means
- Income that was earned but not declared at all.
- Income declared but at a lower amount than actual.
- Income declared under wrong head (e.g., business income classified as other-source to avoid presumptive provisions).
- Deduction / exemption claimed wrongly resulting in lower taxable income.
- Foreign income / foreign asset omitted from Schedule FA.
NOT escaped assessment: differences arising from valuation disputes, interpretation differences on a position you disclosed. These are scrutiny matters, not reassessment matters.
Quick answers
If the omission is real and the additional tax is manageable, yes — ITR-U + 148A(b) reply acknowledging + pay differential. AO usually drops the 148 path. If the omission is disputed or large, defend at 148A(b) stage instead.
Typically 7-30 days, as stated in the notice. Can ask for adjournment of additional 15 days. Beyond that, AO will pass 148A(d) order based on whatever you've submitted (or nothing).
Yes — writ jurisdiction. Common grounds: notice issued without 148A(b) compliance, information not disclosed, time-barred, no specified-authority approval. Several thousand 148 challenges in HCs post-2022.
Sec 270A under-reporting penalty: 50% of tax on under-reported income. Misreporting penalty: 200%. Plus interest under Sec 234A/B/C. Plus possible prosecution under Sec 276C for wilful evasion (above thresholds).
Most likely time-barred under post-2021 windows. AY 18-19 → 3 yr = March 2022. 5 yr extended = March 2024. 10 yr only if foreign asset / fraud — March 2029. Check exact framing of any notice you receive.
When you might want help
Two situations: (1) Just received a 148A(b) show-cause — same-day diagnostic + 7-day reply preparation. (2) 148 notice issued and reassessment proceedings have started — full-defence representation.
Got a Sec 148 notice?
Same-day diagnostic + 7-day reply for 148A(b) + reassessment representation. Fixed scope.
"Ravi" is a composite illustration. Your specific notice will state the exact AY, information source, and reply deadline.