Section 148 and 148A Reassessment Notices: New Time Limits and How to Respond (AY 2026-27)

Most income tax notices are routine. A 143(1) intimation is arithmetic and a 139(9) notice is a formatting problem. A notice under Section 148A is not in that category: it means an Assessing Officer has information suggesting that income chargeable to tax escaped assessment in a year you filed and have long since forgotten about.

The law here was rewritten twice in four years, and the version that applies to notices issued today is far more taxpayer-friendly than the old one. The window has shrunk, the department has to show you its evidence before it can reopen anything, and a large share of these notices die at the show-cause stage if you answer them properly.

What "Income Escaping Assessment" Means

Section 147 lets an Assessing Officer assess or reassess income that escaped assessment for an earlier year. "Escaped" does not mean fraud. In practice it usually means one of these:

• A property sale reported in the SFT by the sub-registrar that does not appear in your capital gains schedule.
• Share or mutual fund transactions visible in AIS from a broker, against a return that reported none.
• Cash deposits or credit card spends above the reporting thresholds that look out of line with declared income.
• Interest or dividend income where TDS was deducted but the income was never offered to tax.
• A year for which no return was filed at all, despite third-party data showing taxable receipts.

The overwhelming majority of reassessment cases now start from a data mismatch, not an investigation. That matters for how you reply: you are usually explaining a reconciliation, not defending a scheme.

The Two-Stage Process: 148A First, 148 Second

Before the Assessing Officer can reopen a year, Section 148A requires a preliminary stage. The structure was simplified with effect from 1 September 2024.

Stage 1: The Section 148A(1) show-cause notice

The AO issues a notice that must be accompanied by the information he holds suggesting that income escaped assessment. This is the key protection: he cannot reopen on suspicion alone, and he cannot withhold the material from you.

You are given a period specified in the notice, which must be between 7 and 30 days, to explain why a notice under Section 148 should not be issued. An extension can be granted on request.

Stage 2: The Section 148A(3) order

After considering your reply, the AO passes a written order deciding whether it is a fit case to issue a notice under Section 148. If he decides it is, he needs the prior approval of the specified authority under Section 151, and only then can the Section 148 notice go out.

If he decides it is not, the matter ends there and you should receive the order saying so.

Stage 3: The Section 148 notice itself

This is the notice that actually reopens the year. It requires you to file a return for that assessment year within the period specified, generally up to three months from the end of the month in which the notice was issued. The reassessment order that follows must normally be passed within 12 months from the end of the financial year in which the Section 148 notice was served, under Section 153.

When the 148A stage is skipped

The show-cause stage does not apply to search and requisition cases. Where a search under Section 132 or a requisition under Section 132A was initiated on or after 1 September 2024, the case goes into the separate block assessment machinery under Section 158BA instead.

The New Time Limits: 3 Years 3 Months, or 5 Years 3 Months

This is the single most useful thing to check when a reassessment notice arrives, because a notice issued beyond the limit is void regardless of how strong the underlying information is.

Section 149 now sets two outer limits, measured from the end of the relevant assessment year:

The ₹50 lakh figure is not a general threshold for "extra tax found". It applies only where the escaped income is represented by an asset, by expenditure on a transaction or event, or by entries in the books. A ₹60 lakh flat purchase that does not reconcile with declared income fits; a ₹60 lakh dispute over a deduction generally does not.

The show-cause notice under Section 148A(1) is bound by the same outer dates, so one that lands after the window has closed is equally bad in law.

What the dates look like in practice

Take AY 2022-23, which ended on 31 March 2023.

• Three years and three months from that date is 30 June 2026. Below ₹50 lakh, that is the last day for a Section 148 notice.
• Five years and three months is 30 June 2028, available only if the ₹50 lakh asset or expenditure test is met.

For AY 2023-24 the equivalent dates are 30 June 2027 and 30 June 2029.

Under the law as it stood before Finance (No. 2) Act, 2024, notices could reach ten years back in ₹50 lakh cases. That ten-year window is gone for notices issued on or after 1 September 2024, and the new limits cannot be used to revive a year already time-barred under the earlier law. If your notice concerns an assessment year from the middle of the last decade, limitation is the first thing to raise.

How to Respond to a 148A(1) Notice

Treat the show-cause reply as the main event, not a formality. It is much cheaper to end the matter here than to fight a completed reassessment in appeal.

Step 1: Read the information annexed to the notice

The notice must tell you what the department has and where it came from: an SFT filing, a TDS return, an insight from another taxpayer's assessment, a registrar record. Note the exact amount and the exact source. Most replies fail because they argue in general terms instead of addressing the specific figure.

Step 2: Check limitation before anything else

Work out the end of the relevant assessment year, add three years and three months, and compare against the date on the notice. If it falls outside and the department has not invoked the ₹50 lakh asset test, say so clearly in the first paragraph of your reply, with the computation.

Also check that the notice is issued through the National Faceless Assessment Centre with a valid Document Identification Number. A communication without a DIN is treated as never issued.

Step 3: Reconcile, do not argue

Pull the return you filed for that year, the Form 26AS, the AIS and the TIS, and your bank and broker statements, then show the AO how the figure he is pointing at is already accounted for.

Common reconciliations that close a file at this stage:

• The gross figure is not the income. A ₹90 lakh sale consideration is not ₹90 lakh of income. Show the indexed cost and the exemption claimed under Section 54 or 54F.
• The receipt is exempt or not yours. Maturity proceeds, a joint holder's share of a joint account, or an inheritance.
• The data is simply wrong. A duplicate SFT entry or a PAN mix-up. If you have already filed AIS feedback on it, attach the acknowledgement.

Step 4: File through e-Proceedings, with documents

Log in to the e-filing portal, open Pending Actions, then e-Proceedings, and submit the reply against the specific notice. Attach the evidence, keep the acknowledgement, and do not rely on an email to the AO. If you need more time, file an adjournment request through the portal before the deadline expires, not after.

Step 5: If the year genuinely has unreported income

Do not construct an explanation. Concede the item, quantify it, and pay the tax with interest under Sections 234A and 234B. Voluntary computation and payment before the reassessment order is the strongest mitigating position available when penalty is considered, and it keeps the case in the 50% under-reporting bracket rather than the 200% misreporting bracket. The penalty rules under Section 270A and the immunity route under 270AA are worth reading before you reply.

Responding to the Section 148 Notice

If the 148A(3) order goes against you and a Section 148 notice follows, the immediate obligation is to file a return for that assessment year within the time specified.

Do not skip this because you disagree with the reopening. Filing preserves your right to claim deductions, losses and exemptions in the reassessment, and not filing invites a best-judgement assessment under Section 144 where the AO estimates the income himself. You can file the return and simultaneously record that it is without prejudice to your objection on jurisdiction or limitation, and that objection survives into appeal before the Commissioner (Appeals).

A Worked Example

Karthik sold a flat in Pune in December 2021 for ₹82,00,000 and bought a larger one in March 2022. He filed ITR-1 for AY 2022-23 declaring only salary, because he was told the reinvestment made the sale "tax free" and therefore not reportable. In May 2026 he receives a Section 148A(1) notice citing SFT data showing an ₹82,00,000 immovable property transfer.

The notice is within time, since 30 June 2026 has not passed and the ₹50 lakh asset test is met in any case. But the escaped income is not ₹82 lakh.

His actual position: purchase cost ₹41,00,000 in FY 2016-17, indexed to roughly ₹60,00,000 using the cost inflation index, giving a long-term capital gain of about ₹22,00,000, fully absorbed by the Section 54 exemption on the new flat. His reply attaches both sale and purchase deeds, the deed for the new flat, the indexation computation and a statement of the Section 54 claim. The escaped income is nil.

The one thing he did get wrong is the form. A capital gain, even a fully exempt one, belongs in Schedule CG of ITR-2, and ITR-1 cannot carry it. Filing the wrong form is what made his return look silent on an ₹82 lakh transaction. 49Tax flags a property sale in your AIS and routes you to ITR-2 with the capital gains schedule pre-filled, which is the cheapest possible way to never receive this notice.

How to Not Get One

Reassessment is almost always preventable, because the department's information comes from sources you can see before it does.

1. Read your AIS and TIS before filing, not after. Every figure the AO will later quote is already sitting there.
2. Report exempt and zero-tax transactions anyway. Section 54 exemptions, grandfathered gains, agricultural income, gifts from relatives. Non-reporting is what creates the mismatch, not the tax.
3. Use the right ITR form. A return that structurally cannot hold the transaction is a reassessment waiting to happen.
4. Fix an old year yourself. An updated return under Section 139(8A) filed before the department acts costs an extra 25% to 70% of tax and interest, still far less than reassessment plus penalty.

For the wider map of notice types and which ones you can safely handle yourself, see the guide to income tax notices and how to respond.

The Takeaway

When a reassessment notice arrives, do three things in this order. Calculate the limitation date from the end of the relevant assessment year and check whether the notice is even valid. Read the annexed information and identify the precise figure and source the AO is relying on. Then reconcile that figure against what you actually filed, and reply inside the 7 to 30 day window with documents attached through e-Proceedings.

A show-cause notice under Section 148A is a question, not a finding. Answered with a clean reconciliation and the right paperwork, most of them end at the 148A(3) order and never become a reassessment at all.