How to Respond to an Income Tax Notice under Section 148 (2026)

How-To Guide · Section 148 Notice

Updated for 2026 · Claw Editorial

A notice under Section 148 of the Income-tax Act means the department believes some of your income escaped assessment and wants to reassess that year. It is serious, but it is not a penalty or a prosecution, and you have clear rights and timelines. Since the law changed in 2021, the department must usually go through an inquiry stage under Section 148A before it issues the Section 148 notice. This guide explains the steps, the time limits, how to reply, and what to do if a reassessment order follows. Last verified October 2026.

01What a Section 148 notice means

Section 148 of the Income-tax Act lets the Assessing Officer reopen a past assessment year if there is information that income chargeable to tax has escaped assessment. The notice asks you to file a return of income for that year so the officer can reassess it. It does not by itself mean you did anything wrong. Often it follows information with the department, such as a high-value transaction, a mismatch, or data from another source.

Do not ignore it, and do not panic. The reassessment regime was rebuilt by the Finance Act, 2021, and tightened again in 2024, with built-in safeguards for the taxpayer. If you respond properly and on time, you keep every one of those protections. For the background to the section, see what Section 148 reassessment is.

02The Section 148A inquiry comes first

Under the current law, the officer usually cannot jump straight to a Section 148 notice. First, under Section 148A, the officer must:

• carry out any inquiry needed on the information suggesting escaped income;
• give you a show cause notice setting out that information and asking why a reassessment notice should not be issued;
• consider your reply; and
• pass an order deciding whether it is a fit case to issue a Section 148 notice.

This is your first and best chance. A clear, documented reply at the 148A stage can stop the reopening before it starts. So treat the 148A show cause notice as the real battleground, not just a formality.

03The time limits for reopening

Section 149 sets how far back the department can go. After the Finance Act, 2024, the limits were rationalised, and in broad terms:

These revised limits apply to notices from 1 September 2024. An important protection is that a year that was already time-barred under the earlier law cannot be reopened by using the new rule. Because the exact counting and transitional position are technical and have been litigated, check the current limit for your year with a professional.

04How to reply, step by step

Work through the notice calmly and in order:

1. Verify it is genuine. Log in to the income tax e-filing portal and check the notice under e-proceedings. A genuine notice carries a valid document identification number.
2. Read what is alleged. Note the assessment year and the information the department relies on.
3. Reply to the 148A show cause notice on time, with a clear explanation and documents that answer each point.
4. File the return for that year if a Section 148 notice is then issued, even if you had filed earlier, because the reassessment runs on this return.
5. Keep your proof ready for the questions that follow in the reassessment.

Meet every date. Missing a reply window weakens your case and can lead to a best judgment assessment made without your side of the story.

05Asking for reasons and objecting

When a Section 148 notice is issued, you can ask the officer for the reasons recorded for reopening, and you can file objections if you believe the reopening is not valid, for example because it is based on a mere change of opinion, or is beyond the time limit, or lacks real information. The officer must deal with your objections before completing the reassessment. Raising these points properly now also protects your right to argue them later in appeal.

06If a reassessment order raises a demand

If, after all this, the officer passes a reassessment order and raises a tax demand you dispute, you appeal. The first appeal goes to the Commissioner of Income Tax (Appeals), or CIT(A), and from there to the Income Tax Appellate Tribunal (ITAT), which is the final fact-finding authority. A further appeal, on a question of law, lies to the High Court and then the Supreme Court. For how that route works, see how to file an income tax appeal to the CIT(A) and ITAT. To follow a tribunal matter, see how to check an ITAT appeal status by PAN.

07How to track the matter

A reassessment can run from the 148A notice to the order and then through appeal over a long period. The notices and your replies sit under e-proceedings on the e-filing portal, and an ITAT appeal can be followed on the tribunal's case status. Businesses and professionals handling many such matters often lose track of reply dates and hearing dates, so a single view helps. See income tax appeals tracking at the ITAT.

08Where Claw fits

Claw is an all-in-one legaltech platform for Indian advocates, law firms, and corporate legal teams, combining AI-based case search, an AI legal assistant (Legal GPT), case management, and compliance automation across all Indian courts and tribunals.

A Section 148 matter runs from the 148A show cause notice to the reassessment order and on to the CIT(A) and the ITAT, each with its own deadline. Claw tracks cases, orders and hearing dates across 9,102 courts, benches and forums, including the ITAT, so a taxpayer or counsel can follow a reassessment appeal by PAN or party name and set reminders for every date without checking portals one by one. You can also search more than 30 crore judgments, with Supreme Court rulings from 1950 and High Court rulings from 1990, to see how courts and the ITAT have treated reopening, change of opinion, the Section 148A procedure and the time limits, with results in under 5 seconds. Claw does not use your case documents to train its AI models.

Create a FREE Claw account to track your reassessment and ITAT appeals by PAN and never miss a date, and use case search across Indian courts to find judgments on Section 148 reopening.

09Sources and further reading

• Income Tax e-filing portal (view notices, reply, file returns): incometax.gov.in
• India Code (Income-tax Act, 1961): indiacode.nic.in
• Claw: clawlaw.in

This guide is general information, not tax or legal advice. The reassessment rules and time limits are technical and have changed through the Finance Acts, so confirm the current law and take advice from a professional before you reply.

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