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Home

Income Tax Notices
Income Tax Reference Guide

Income Tax Notices: All Sections Explained

Updated 23 September 2026  •  9 notices covered  •  Sections 131, 132, 133(6), 133A, 148A, 148, 154, 156, 245  •  Sources: incometaxindia.gov.in & incometax.gov.in

Income tax notices arrive through the e-proceedings portal and can be hard to tell apart. This guide maps all 9 notice types — from the least intrusive written information request to the full search and seizure warrant — grouping them by what the department is trying to do and linking to a detailed guide for each one. If you have received a notice, start by reading the section number, find the matching card below, and follow the link.

What Are the 9 Types of Income Tax Notices and How Are They Classified?

All income tax notices fall into 3 categories based on the stage of the department’s action: Inquiry & Investigation (the department is gathering information), Assessment & Reassessment (the department is re-examining a past return), and Post-Assessment (the assessment is done and the notice concerns its result or a correction to it). The table below shows the classification at a glance.

Section Notice Name Category Department’s Goal Requires Personal Attendance?
131 Summons Inquiry Get information on oath in person Yes — compulsory
133(6) Information Notice Inquiry Obtain documents from any person in writing No — written only
133A Survey Inquiry Inspect business premises during business hours No notice — unannounced visit
132 Search & Seizure Enforcement Seize undisclosed cash, jewellery, books No notice — warrant execution
148A Preliminary Inquiry Reassessment Hear the assessee before reopening Optional — written response
148 Reassessment Notice Reassessment Re-open a past year and re-assess income No — file return online
154 Rectification Notice Post-Assessment Correct a mistake in an existing order No — written response
156 Notice of Demand Post-Assessment Recover tax, interest, or penalty due No — pay or appeal
245 Refund Adjustment Post-Assessment Adjust a refund against a pending demand No — written objection

Key Principle: Category Determines Your Response Strategy

  • Inquiry & Investigation: Cooperate fully with accurate information; do not ignore or delay; engage a CA before any statement on oath (Sections 131, 132(4)). The department is building a case — what you say now shapes the assessment later.
  • Assessment & Reassessment: Respond within the strict deadline; challenge the legal validity of the notice if the Section 148A process was skipped; file a complete return and gather all supporting documents for the year being reopened.
  • Post-Assessment: Check the demand for correctness before paying; file an appeal and stay application if disputing; do not let the 30-day payment window lapse without either paying or obtaining a stay.

Which Notices Are Used for Inquiry, Survey, and Search and When Are They Issued?

The 4 inquiry and enforcement notices escalate in severity — from a written information request to a full search with physical seizure. The department typically moves up this ladder when a lower-level action fails to produce the required cooperation or information.

§ 131
Summons for Attendance or Document Production

Inquiry

Issued by: AO, Investigation Wing • Respond: Attend on date specified
Compels personal attendance before the income tax officer on oath to answer questions and/or produce documents. Non-compliance attracts a Rs 10,000 penalty per default under Section 272A and prosecution under Section 276D for wilful defaults.

Read the Section 131 guide →

§ 133(6)
Notice for Information From Any Person

Inquiry

Issued by: AO (PCIT/CIT approval if no pending case) • Respond: Written reply, 30 days
Unlike Section 131, this requires only a written response — no personal attendance. Can be sent to any person: banks, employers, buyers, property registrars. Since the Finance Act 2014, it can also be issued without a pending proceeding, with prior PCIT/CIT approval.

Read the Section 133(6) guide →

§ 133A
Survey of Business Premises

Inquiry

Issued by: Income Tax Officer or above • Respond: Cooperate in person during survey
An unannounced visit to business premises during business hours, authorised without a warrant. Officers can inspect books, count cash and stock, and record statements. Cannot seize cash or jewellery — seizure requires a Section 132 warrant.

Read the Section 133A guide →

§ 132
Search and Seizure Warrant

Enforcement

Issued by: DGIT, CCIT, PCIT, or CIT only • Respond: Immediate — team at door
The most coercive power in the Income Tax Act. A warrant authorises the team to enter at any hour, break open locked safes, search persons, and physically seize cash, jewellery, and books. Triggers mandatory Section 153A assessment notices for 6 AYs. Section 271AAB imposes a 30% or 60% penalty on undisclosed income found.

Read the Section 132 guide →

The Inquiry Escalation Ladder

These 4 notices represent an escalation path. The department typically begins with a Section 133(6) written information request to banks or third parties. If the assessee fails to cooperate with a Section 131 summons, or if the survey reveals undisclosed assets, the matter is referred to the Investigation Wing for a Section 132 search.

Which Notices Are Used for Assessment and Reassessment and What Do They Trigger?

§ 148A
Preliminary Inquiry Before Reassessment

Reassessment

Issued by: AO (with PCIT/CIT sanction) • Respond: 15 days (extendable to 30)
Introduced by Finance Act 2021 as a mandatory gate before any Section 148 reassessment. The AO shows the assessee the information it has and gives an opportunity to explain before reopening. A well-crafted reply at this stage can prevent the Section 148 notice from being issued at all.

Read the Section 148A guide →

§ 148
Reassessment Notice

Reassessment

Issued by: AO (after Section 148A order) • Respond: 30 days — file return online
Formally reopens an assessment year and requires filing a fresh return. Time limit: 3 years for escaped income up to Rs 50 lakh; 10 years for escaped income above Rs 50 lakh with documentary evidence. Non-filing results in best-judgment assessment under Section 144.

Read the Section 148 guide →

Which Notices Are Issued After Assessment Is Complete and What Remedies Exist?

§ 154
Rectification of Mistake in Order

Post-Assessment

Issued by: AO (or applied for by taxpayer) • Respond: 30 days
Corrects a “mistake apparent from the record” in an existing order — arithmetic errors, wrong tax rates, missed TDS credits, omitted Section 87A rebate. Both the assessee (within 4 years) and the AO can initiate rectification. The AO must dispose within 6 months.

Read the Section 154 guide →

§ 156
Notice of Demand

Post-Assessment

Issued by: AO after assessment order • Respond: Pay within 30 days or dispute
The formal invoice after an assessment — states the total tax, interest, and penalty due. Failure to pay within 30 days attracts 1% monthly interest under Section 220(2) and triggers recovery proceedings. If disputing, file Section 246A appeal and apply for stay of demand.

Read the Section 156 guide →

§ 245
Intimation for Refund Adjustment

Post-Assessment

Issued by: CPC or AO before refund is processed • Respond: Object within 30 days
Before the department processes a refund, it checks whether any outstanding demand exists. If it does, the refund is adjusted against the demand. Section 245 gives the assessee prior notice and a 30-day window to object. The objection must show the demand is disputed (under appeal or stayed).

How Do Response Deadlines Compare Across All 9 Income Tax Notices?

Section Notice Type Standard Deadline Consequence of Non-Response
131 Summons Date specified Rs 10,000 penalty per default (Sec. 272A); prosecution under Sec. 276D
133(6) Information Notice 30 days (typical) Rs 10,000 penalty per default (Sec. 272A); AO proceeds on available information
133A Survey During survey Section 275A: obstruction attracts prosecution up to 2 years RI
132 Search & Seizure Immediate Section 271AAB 60% penalty; Section 276C prosecution for wilful evasion
148A Preliminary Inquiry 15 days AO passes Section 148A(d) order without hearing; Section 148 notice follows
148 Reassessment Notice 30 days (file return) AO frames best-judgment assessment under Section 144; higher additions likely
154 Rectification Notice 30 days AO passes rectification order without assessee input; enhanced demand may stand
156 Notice of Demand 30 days 1% monthly interest under Section 220(2); recovery proceedings; TRO attachment
245 Refund Adjustment 30 days Refund adjusted automatically against the demand; recovery of adjusted refund is difficult

What Happens If You Ignore or Miss Responding to an Income Tax Notice?

Non-Response Has Different Consequences at Each Stage

  • Inquiry stage (Sections 131, 133(6)): Each default on a Section 131 summons attracts a separate Rs 10,000 penalty. For Section 133(6), the AO proceeds on the best available information and frames additions for unexplained transactions.
  • Survey (Section 133A): Obstruction of a survey officer is a cognizable offence under Section 275A, punishable with up to 2 years of rigorous imprisonment.
  • Search (Section 132): Deliberate concealment during a search compounds the penalty from 30% to 60% under Section 271AAB and opens the door to prosecution under Section 276C for wilful tax evasion (3 months to 7 years rigorous imprisonment).
  • Reassessment (Sections 148A, 148): Missing the Section 148A deadline means the AO passes the reopening order without hearing the assessee. Missing the Section 148 return-filing deadline results in a best-judgment assessment under Section 144.
  • Post-assessment (Sections 154, 156, 245): A missed Section 156 payment without a stay triggers 1% monthly interest under Section 220(2) and can lead to the TRO attaching bank accounts and immovable property. A missed Section 245 objection window means the refund is adjusted and recovery becomes nearly impossible.

Which Notice Should You Respond to First If You Receive Multiple Notices?

When multiple notices arrive simultaneously, prioritize by consequence severity and deadline tightness.

1
Section 132 Search in Progress — All other notices are secondary. Call a tax advocate immediately. Everything during the search shapes all subsequent proceedings.
2
Section 156 Notice of Demand — 30-Day Window — A demand that lapses without payment or a stay application triggers compounding interest and enforcement action. Pay 20% and file the appeal within 30 days.
3
Section 148A Preliminary Inquiry — 15-Day Window — The shortest deadline of any written notice. A substantive, evidence-backed response here can stop the reassessment before it opens.
4
Section 148 Reassessment Return — 30-Day Window — Filing a complete, accurate return is the strongest procedural defence. A missed deadline results in a Section 144 best-judgment assessment.
5
Section 131 Summons — Date Specified — Respond before the date cited. Request an adjournment in writing if more time is needed. Each missed date is a separate Rs 10,000 penalty.
6
Sections 133(6), 154, 245 — 30-Day Window Each — Handle these after the above but well within their 30-day windows. Section 245 objections should focus on disputing the underlying demand, not just the adjustment itself.

Common Questions

What is the difference between a Section 131 summons and a Section 133(6) information notice?

A Section 131 summons requires personal attendance on oath before the officer; a Section 133(6) notice requires only a written response and production of documents. The summons is backed by civil court powers. A Section 133(6) notice can also be sent to third parties (banks, employers) who had no involvement in any proceeding against the assessee.

Can a Section 148 reassessment notice be issued without first issuing a Section 148A notice?

No — for reassessments on or after 1 April 2021, Section 148A is a mandatory prerequisite. The AO must show the information to the assessee, hear a response, and pass an order under Section 148A(d) before issuing the Section 148 notice. The Supreme Court in Union of India v. Ashish Agarwal (2022) confirmed this sequence is mandatory.

What is the fastest way to stop a Section 245 refund adjustment?

File an objection within 30 days showing that the underlying demand is disputed (under appeal, subject of a rectification application, or already stayed). If the demand is on appeal, submit the appeal acknowledgment and any stay order. The AO cannot adjust a refund against a demand that is validly stayed.

What errors qualify for rectification under Section 154 and what is the time limit?

Section 154 covers mistakes apparent from the record: arithmetic errors, wrong tax rate, missed TDS credit, omitted Section 87A rebate, and interest calculation errors. It does not cover debatable legal questions. The taxpayer can apply within 4 years from the end of the financial year in which the order was passed. The AO must dispose within 6 months of receipt.

If you receive a Section 156 notice of demand, can you pay part of it and dispute the rest?

Yes. Pay the undisputed portion and simultaneously file a Section 246A appeal against the disputed portion with a stay application. Under CBDT guidelines, paying 20% of the disputed demand and filing a pending appeal is the standard basis for a stay. The AO cannot proceed with recovery while a valid stay is in force.

For expert help with any income tax notice, contact the Tradeviser team. Individual notice guides: Section 131Section 132Section 133(6)Section 133ASection 148ASection 148Section 154Section 156