Section 148 Reassessment Notice: Time Limits and Reply Strategy

Short answer: A notice under Section 148 of the Income-tax Act, 1961, is issued by the Income Tax Department to reopen a past assessment if it believes your income has escaped taxation. The time limit is generally 3 years, but extends to 10 years if the alleged escaped income exceeds ₹50 lakh. Responding correctly to the preliminary notice under Section 148A is critical before the final notice is issued.

What is a notice under Section 148?

A notice under Section 148 is a formal communication from your Assessing Officer (AO) informing you that they intend to reassess your income for a specific past assessment year. This process, governed by Section 147, is initiated when the AO has "information which suggests that the income chargeable to tax has escaped assessment." In simple terms, the department has found a transaction or income source that they believe was not correctly reported in your original Income Tax Return (ITR), leading to underpayment of tax.

Why did I receive a Section 148 notice?

You likely received this notice because the tax department's systems flagged a discrepancy between your filed ITR and information available with them. The department gathers data from various sources, and any mismatch can trigger a notice. Common reasons include:

• High-Value Transactions: Significant cash deposits, property purchases or sales, or large investments in shares and mutual funds that don't align with your declared income.
• Mismatch with Form 26AS/AIS/TIS: Your Annual Information Statement (AIS) and Taxpayer Information Summary (TIS) show income (like interest, dividends, or sale proceeds) that you failed to include in your ITR.
• Information from Other Agencies: Data shared by GST authorities, property registrars, or foreign tax jurisdictions indicating undeclared income or assets.
• Business Expenses: Disallowance of specific business expenditures claimed by you, which the AO believes were not legitimate.
• Bogus Capital Gains/Losses: Transactions identified as being structured purely for tax avoidance.

What is the time limit for issuing a Section 148 notice?

The time limits for issuing a reassessment notice are strictly defined under Section 149 of the Act. As of September 2026, the following rules apply:

1. Up to 3 Years: An AO can issue a notice under Section 148 for any assessment year up to three years from the end of that relevant assessment year.

2. Between 3 to 10 Years: A notice can be issued beyond three years but not beyond ten years from the end of the relevant assessment year, only if the following conditions are met:

   • The AO has evidence proving that income which has escaped assessment amounts to or is likely to amount to ₹50 lakh or more for that year.
   • This income is represented in the form of an asset, an expenditure related to an event, or an entry in the books of account.

Crucially, no notice can be issued for any assessment year beginning on or before 1st April 2021 if the time limit under the old law (which was generally 6 years) had already expired before the new provisions came into effect on 1st April 2021.

What is the procedure before a Section 148 notice is issued?

The Finance Act, 2021 introduced a mandatory pre-notice consultation process under Section 148A, which is a significant protection for taxpayers. The AO cannot issue a Section 148 notice directly anymore (except in search and seizure cases).

The procedure is:

1. Inquiry [Sec 148A(a)]: The AO conducts an internal inquiry based on the information received.
2. Show Cause Notice [Sec 148A(b)]: If the AO finds merit, they must issue you a show-cause notice, providing the information they have and asking you to explain why a notice under Section 148 should not be issued. You are given a period of 7 to 30 days to reply.
3. Your Reply: You must submit a detailed, evidence-backed reply to this notice, contesting the AO's information and assumptions.
4. Order [Sec 148A(d)]: After considering your reply, the AO must pass a speaking order deciding whether or not it is a fit case to issue a Section 148 notice.

Only if the AO passes an order against you under Section 148A(d) can they proceed to issue the final reassessment notice under Section 148.

How should I reply to a Section 148 notice?

If you receive the final notice under Section 148 (after the Section 148A process), you must follow a specific legal procedure. Do not mix this up with replying to the initial Section 148A notice.

Step	Action Required	Purpose
1. File ITR	File an Income Tax Return for the relevant assessment year as requested in the notice.	This is a mandatory compliance step. You can file the same return as originally filed or a corrected one.
2. Request Documents	Write a letter to the AO requesting a copy of the reasons recorded for reopening, and the order passed under Section 148A(d).	You have a legal right to these documents. They form the basis of your legal challenge.
3. Analyse Reasons	Scrutinize the reasons provided by the AO for any factual errors, legal infirmities, or jurisdictional defects (e.g., notice is time-barred).	This is the core of your defence strategy.
4. File Objections	Draft and file detailed legal objections against the initiation of reassessment. Argue why the reopening is invalid.	Your objections must be specific, citing facts, law, and case precedents.
5. Await Disposal Order	The AO is legally bound to dispose of your objections by passing a separate, speaking order before proceeding with the reassessment.	If the AO rejects your objections, you can challenge this order later in an appeal if the final assessment is against you.

Worked example

Scenario: Mr. Sharma, a resident of Bengaluru, receives a show-cause notice under Section 148A(b) in May 2026 for the Assessment Year 2017-18.

• The Department's Information: The notice states that the department has information from its investigation wing that Mr. Sharma sold a commercial property in FY 2016-17. While the sale deed showed a consideration of ₹2 crore, the department's information suggests he received an additional ₹70 lakh in cash, which was not declared.

• Escaped Income Calculation: The alleged undeclared cash receipt is ₹70 lakh.

• Time Limit Check:

  • The relevant financial year is 2016-17, so the Assessment Year (AY) is 2017-18.
  • The end of the relevant AY is 31st March 2018.
  • The alleged escaped income (₹70 lakh) is more than the ₹50 lakh threshold.
  • Therefore, the extended time limit of 10 years applies. The deadline for issuing the notice is 31st March 2028.
  • The notice issued in May 2026 is legally valid from a time limit perspective.

• Mr. Sharma's Action: Mr. Sharma must now reply to the Section 148A(b) notice within the stipulated time. He should provide bank statements, a copy of the sale deed, and an affidavit denying the receipt of any cash payment. If his reply and evidence are not convincing, the AO will pass an order under Section 148A(d) and then issue a formal notice under Section 148, initiating the reassessment process.

Common mistakes

1. Ignoring the Notice: This is the worst mistake. Ignoring a notice under Section 148 or 148A will lead to a 'best judgment assessment' under Section 144, where the AO assesses your income based on available information, likely resulting in a high tax demand and penalties.
2. Not Replying to the Section 148A Notice: The Section 148A stage is your golden opportunity to stop the reassessment before it even begins. Failing to submit a robust reply here means the AO will almost certainly proceed with issuing a Section 148 notice.
3. Failing to File the ITR: After a Section 148 notice is issued, you must file the ITR for that specific year. Failure to do so is a procedural lapse and weakens your case.
4. Submitting an Incomplete or Vague Reply: Your reply should be backed by documents, calculations, and legal arguments. A simple denial without evidence is ineffective.
5. Not Challenging Jurisdiction: Always check if the notice is issued within the prescribed time limits under Section 149. A time-barred notice is invalid and should be challenged in your preliminary objections.

How SP & SC helps

Facing a reassessment notice can be daunting. The process is technical and requires a deep understanding of tax law and procedure. SP & SC Legal and Taxation Services provides end-to-end support for handling such notices. We review the notice and underlying information, draft a legally sound reply to the initial Section 148A notice, file objections, and represent you before the tax authorities through the entire reassessment proceeding. Our goal is to resolve the matter at the earliest possible stage with a favourable outcome. For expert guidance, you should seek a tax consultation.

Frequently asked questions

H3: What is the penalty for income escaping assessment?

If the reassessment results in a tax demand, a penalty under Section 270A may be levied. This penalty can be 50% of the tax payable on under-reported income. If the under-reporting is due to misreporting of facts, the penalty can be as high as 200% of the tax payable.

H3: Can a reassessment be done for a year that was already scrutinised?

Yes. Even if your case was previously selected for scrutiny under Section 143(3), it can be reopened under Section 148 if the AO has fresh, tangible information suggesting that some income escaped assessment during the original scrutiny.

H3: Is a notice under Section 148 different from a notice under Section 143(2)?

A Section 143(2) notice is issued to begin a 'regular scrutiny' of an ITR you have filed. A Section 148 notice is issued to reopen a past assessment that is already complete, based on the belief that income has 'escaped' assessment.

H3: Can I file a revised return after receiving a Section 148 notice?

No, you cannot file a 'revised return' under Section 139(5). However, the Section 148 notice itself requires you to file a 'return of income' for that specific year. This return, filed in response to the notice, forms the basis for the reassessment proceedings.

H3: Is it necessary to hire a CA or lawyer to reply to a Section 148 notice?

While not legally mandatory, it is highly advisable. Reassessment proceedings involve complex legal arguments about jurisdiction, time limits, and interpretation of facts and law. Professional representation significantly improves your chances of a favourable outcome.

Get a fixed-fee quote

If you have received a notice from the Income Tax Department, do not delay. Share the notice and relevant documents with us for a confidential review. We will provide a written fixed-fee quote for handling the entire process, from drafting the initial reply to representing you before the tax authorities. Contact SP & SC at Contact SP & SC or on WhatsApp at +91 90356 74566 to get started.