Quick Answer
An income tax notice is a formal communication from the Income Tax Department requiring you to take a specific action — file a return, furnish information, attend scrutiny, pay a demand, or respond to a reassessment proposal. Each notice type carries a different legal consequence for non-compliance, ranging from penalty (Rs 10,000 per default) to prosecution (rigorous imprisonment up to 7 years). At Virtual Auditor, we handle every category of income tax notice — from routine Section 142(1) inquiries to complex Section 148 reassessment proceedings. Our approach is to first verify the legal validity of the notice itself before addressing the merits, because a procedurally defective notice can be challenged and set aside entirely.
Definition — Section 142(1) (Inquiry Before Assessment): An inquiry notice issued by the Assessing Officer to require the assessee to (a) file a return of income if not already filed, (b) produce or cause to be produced accounts or documents specified in the notice, or (c) furnish information in writing and verified on specified points or matters. This is a preliminary information-gathering tool, not an assessment order.
Definition — Section 143(2) (Scrutiny Notice): A notice issued where the AO considers it necessary to ensure that the assessee has not understated income, has not computed excessive loss, or has not underpaid tax. This notice initiates scrutiny assessment proceedings. It must be served within 3 months from the end of the FY in which the return was furnished (extended to 6 months for returns filed for AYs up to 2017-18).
Definition — Section 148 (Reassessment Notice): A notice issued when the AO has information suggesting income chargeable to tax has escaped assessment for a past year. Post Finance Act 2021, issuance must be preceded by a Section 148A inquiry. Time limits are governed by Section 149: 3 years (general), 10 years (escaped income of Rs 50 lakhs or more).
Definition — Section 156 (Demand Notice): A notice of demand issued under Section 156 after any order of assessment, reassessment, penalty, or interest is passed. It specifies the sum payable and the time within which payment must be made (30 days from service). Non-payment triggers recovery proceedings under Sections 220 to 232.
Section 142(1) — Inquiry Notice: When and Why It Is Issued
Section 142(1) is the Department’s primary information-gathering tool. It operates at three distinct stages and serves three distinct purposes:
Section 142(1)(i) — Notice to File Return
Where an assessee has not filed a return of income for any assessment year, the AO may serve a notice under Section 142(1)(i) requiring the assessee to furnish a return within the time specified in the notice. This is separate from the notice under Section 148 (reassessment) and is used when the AO simply wants the return to be filed — not when the AO has information that income has escaped assessment. The practical difference is significant: a Section 142(1)(i) notice does not carry the procedural safeguards of Section 148A, but it also does not allow the AO to reopen a past assessment.
Response timeline: The time specified in the notice, typically 15 to 30 days. If you need more time, file a written request for extension before the deadline. There is no automatic extension — the AO’s discretion applies.
Consequence of non-compliance: If you fail to file the return within the specified time, the AO can proceed to make a best judgement assessment under Section 144. Additionally, a penalty of Rs 10,000 per default is leviable under Section 272A(1)(d). In cases where the total income exceeds the basic exemption limit, prosecution under Section 276CC for wilful failure to file the return is also possible.
Section 142(1)(ii) — Notice to Produce Documents
During assessment proceedings (whether scrutiny under Section 143(3) or reassessment under Section 147), the AO may require the assessee to produce or cause to be produced accounts or documents specified in the notice. This is the most common type of Section 142(1) notice. It is issued when the AO needs to examine books of account, bank statements, sale deeds, agreements, or any other document relevant to the assessment.
Response timeline: As specified in the notice, typically 7 to 15 days. Under the Faceless Assessment Scheme, the response is uploaded on the e-filing portal.
Consequence of non-compliance: Failure to produce documents can result in: (a) adverse inference drawn against the assessee; (b) disallowance of claims that required documentary support; (c) best judgement assessment under Section 144; and (d) penalty under Section 272A(1)(d).
Section 142(1)(iii) — Notice to Furnish Information
The AO may require the assessee to furnish in writing and verified in the prescribed manner, information on such points or matters as the AO considers necessary. This is used for specific queries — for example, the nature and source of a credit entry, details of cash deposits, or the basis for claiming a deduction. The distinction from Section 142(1)(ii) is that this clause requires the assessee to provide explanations and information, not merely produce existing documents.
Section 143(2) — Scrutiny Notice: The Gateway to Full Assessment
A Section 143(2) notice is the starting point of a scrutiny assessment. Without a valid Section 143(2) notice served within the prescribed time, the AO cannot proceed with scrutiny. The notice itself is a jurisdictional prerequisite — an assessment completed without a valid Section 143(2) notice is a nullity.
Time Limit for Service of Section 143(2) Notice
The notice must be served on the assessee within 3 months from the end of the financial year in which the return was furnished. For example, if a return for AY 2025-26 was filed on 31 July 2025 (FY 2025-26), the Section 143(2) notice must be served by 30 June 2026 (3 months from end of FY 2025-26, i.e., 31 March 2026).
If the return is a belated return or revised return filed after the due date, the 3-month clock runs from the end of the FY in which the belated/revised return was furnished. This means a return filed on 31 December 2025 (FY 2025-26) must receive a Section 143(2) notice by 30 June 2026.
Scrutiny Selection Criteria — CASS and Risk Parameters
Cases are selected for scrutiny through the Computer Aided Scrutiny Selection (CASS) system based on risk parameters defined by CBDT. Common triggers include: (a) large cash deposits relative to returned income; (b) high-value transactions reported in AIR/SFT not matching the return; (c) significant refund claims; (d) high turnover with low profit margins; (e) cases flagged by investigation wing or intelligence inputs; and (f) mismatch between TDS/TCS credits and income reported.
Responding to a Section 143(2) Notice — Our Approach
At Virtual Auditor, we follow a structured approach to scrutiny representation:
Step 1 — Verify notice validity. We first check whether the notice was served within the prescribed time limit and whether it was issued by the jurisdictional AO (or the faceless assessment unit, as applicable). An invalid notice is immediately challenged.
Step 2 — Analyse the scope. The notice will specify the issues selected for examination. Under the Faceless Assessment Scheme, the initial notice is followed by specific questionnaires identifying the issues. We map each issue to the relevant return schedules, accounts, and supporting documents.
Step 3 — Prepare documented responses. Every submission is factual, documented, and cross-referenced. We do not provide information beyond what is asked — over-disclosure is a common mistake that creates new lines of inquiry. Each response addresses the specific query with the minimum necessary information supported by documentary evidence.
Step 4 — Attend hearings and manage proceedings. Under the Faceless Scheme, hearings are conducted through video conferencing. We ensure all submissions are uploaded within the specified time, adjournment requests are filed if needed, and every communication is documented.
Section 148 — Reassessment Notice: When the Department Reopens Your Case
A Section 148 notice means the Department proposes to reopen your assessment for a past year because it has information suggesting income has escaped assessment. This is one of the most serious notices a taxpayer can receive, because it effectively reopens a closed chapter.
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Post Finance Act 2021 — Mandatory Section 148A Inquiry
Since 1 April 2021, every Section 148 notice must be preceded by a Section 148A inquiry. The AO must: (a) obtain prior approval from the specified authority; (b) serve a show cause notice providing the information suggesting escaped income; (c) consider the assessee’s response; and (d) pass a reasoned order deciding whether to issue the Section 148 notice. For a detailed analysis, see our Section 148/148A Reassessment Defence Guide.
Time Limits Under Section 149
Section 149(1)(a): Within 3 years from the end of the relevant AY — general limit, no quantum threshold. Section 149(1)(b): Beyond 3 years but within 10 years — only if escaped income is Rs 50 lakhs or more, with PCCIT/CCIT approval. A time-barred notice is void ab initio and cannot be saved by any amount of substantive justification.
Defence Strategy for Section 148 Notices
Our defence framework evaluates: (a) time-bar under Section 149; (b) Section 148A procedural compliance; (c) change of opinion (if original scrutiny covered the same issue); (d) absence of valid ‘information’ under Explanation 1 to Section 148; (e) lack of nexus between information and belief; (f) approval from wrong authority; and (g) factual errors in reasons recorded. A single jurisdictional defect is sufficient to quash the notice.
Section 156 — Demand Notice: Understanding and Responding to Tax Demands
A Section 156 demand notice is issued after an assessment order, reassessment order, penalty order, or any order that creates a tax liability. It specifies the sum payable and the deadline for payment (30 days from service).
What Triggers a Section 156 Demand
A demand arises when: (a) the AO makes additions to income during scrutiny, resulting in additional tax; (b) a reassessment order determines additional income; (c) a penalty order under Section 270A or 271(1)(c) is passed; (d) interest is charged under Sections 234A, 234B, or 234C; (e) TDS/TCS credit is denied or reduced; or (f) the intimation under Section 143(1) computes a different tax liability than the self-assessed tax paid.
Response Options for a Section 156 Demand
Option 1 — Pay the demand. If you agree with the demand, pay within 30 days through the e-filing portal (challan ITNS 280, minor head 400 for regular assessment). Interest under Section 220(2) at 1% per month accrues from the expiry of 30 days if payment is not made within time.
Option 2 — File an appeal before CIT(A). If you disagree with the underlying assessment order, file an appeal under Section 246A before the Commissioner of Income Tax (Appeals) within 30 days of the assessment order. The appeal must be filed through the e-filing portal under Form 35. See our detailed Form 35 CIT(A) Appeal Guide for the complete procedure.
Option 3 — Apply for stay of demand under Section 220(6). Pending the appeal, apply to the AO for stay of demand. The CBDT instruction dated 31 July 2017 provides that the AO should normally grant stay if the assessee pays 20% of the disputed demand. This is not automatic — the AO retains discretion, but the instruction provides a strong basis for seeking stay. If the AO refuses stay or demands more than 20%, approach the PCIT/CIT or the ITAT for stay.
Option 4 — File a rectification under Section 154. If the demand arises from a computational error, mistake apparent from the record, or incorrect credit of TDS/TCS, file a rectification application under Section 154 through the e-filing portal. Common rectification grounds include: TDS credit not given despite Form 26AS reflecting it, advance tax not credited, wrong interest computation, and carry-forward losses not allowed despite correct return filing.
Section 131 — Summons: Powers of a Civil Court
A Section 131 summons is qualitatively different from other notices. The AO, exercising powers of a civil court, can compel: (a) attendance of any person and examination on oath; (b) production of books of account and documents; and (c) issuing commissions for examination of witnesses or inspection of accounts.
Non-compliance with a Section 131 summons can result in prosecution under Section 174 IPC (Section 228 BNS) for non-attendance in obedience to a summons, and under Section 175 IPC (Section 229 BNS) for omission to produce documents. These are criminal offences, not merely civil penalties.
When Section 131 Summons Are Typically Issued
Section 131 summons are used when: (a) the Department is conducting an investigation and needs testimony under oath; (b) third parties (such as bankers, brokers, or counterparties) are required to provide information; (c) the assessee has not complied with Section 142(1) notices; and (d) the Department wants to record statements that can be used as evidence in penalty and prosecution proceedings.
Section 133(6) — Power to Call for Information
Section 133(6) empowers the AO (or prescribed income tax authority) to require any person, including a banking company or officer thereof, to furnish information relating to any points or matters useful for the purposes of the Act. Unlike Section 142(1), which is directed at the assessee, Section 133(6) is typically directed at third parties — banks, registrars, demat depositories, or counterparties to a transaction.
If you receive a Section 133(6) notice as a third party, you must comply within the time specified. The notice must specify the information required, and the information must be ‘useful’ for the purposes of the Act. Fishing or roving inquiries that are not connected to any pending proceeding have been struck down by courts.
Expert Insight — CA V. Viswanathan, FCA, IBBI/RV/03/2019/12333
The single most common mistake taxpayers make is ignoring income tax notices or responding without professional assistance. Every notice carries a response deadline, and missing that deadline shifts the legal position in the Department’s favour. A Section 142(1) notice ignored leads to best judgement assessment under Section 144. A Section 143(2) notice ignored leads to an ex-parte order with maximum additions. A Section 148 notice ignored forfeits your right to file objections. A Section 156 demand ignored triggers recovery proceedings including bank attachment.
At Virtual Auditor, our first step with every notice is to verify its legal validity — correct section, correct AO, served within time, proper DIN (Document Identification Number). We have successfully challenged notices that were issued without DIN (mandatory since 2019), notices served after the time limit expired, and notices issued by officers without jurisdiction. The validity challenge, when successful, eliminates the entire proceeding without having to engage on merits.
Complete Notice-Response Matrix
Section 142(1) — Response Matrix
Notice type: Inquiry before/during assessment. Response deadline: As specified in notice (typically 15-30 days). Response mode: E-filing portal (Faceless Scheme). Consequence of non-compliance: Best judgement assessment (Section 144) + penalty Rs 10,000 (Section 272A(1)(d)) + possible prosecution (Section 276CC for non-filing). Challenge grounds: Notice not issued by jurisdictional AO; notice issued after completion of assessment; information sought not relevant to assessment; no DIN.
Section 143(1) — Intimation Matrix
Notice type: Intimation of processing (not a formal notice, but requires response if demand is raised). Response deadline: 30 days from demand notice. Response mode: Rectification under Section 154 via e-filing portal, or appeal under Section 246A. Consequence of non-compliance: Demand enforced; adjustment of refunds against demand; interest under Section 220(2). Challenge grounds: Prima facie adjustments not covered under Section 143(1)(a); no intimation before making adjustment; arithmetic or clerical error in processing.
Section 143(2) — Scrutiny Notice Matrix
Notice type: Scrutiny assessment. Response deadline: As specified (typically 15-30 days for each questionnaire). Response mode: E-filing portal (Faceless Scheme); video conferencing for hearings. Consequence of non-compliance: Ex-parte assessment with additions; penalty proceedings under Section 270A/271(1)(c). Challenge grounds: Notice served beyond time limit of Section 143(2); notice not issued by jurisdictional AO/faceless unit; no DIN; CASS selection parameters not met.
Section 148/148A — Reassessment Notice Matrix
Notice type: Reopening of assessment for escaped income. Response deadline: Section 148A(b) response: 7-30 days as specified. Section 148 return: 3 months or as specified. Response mode: E-filing portal. Consequence of non-compliance: Best judgement assessment under Section 144; forfeiture of right to file objections. Challenge grounds: Time-bar under Section 149; non-compliance with Section 148A; change of opinion; no valid information; approval from wrong authority. See our Income Tax Appeal Services Guide for appellate remedies.
Section 156 — Demand Notice Matrix
Notice type: Demand for payment of tax/interest/penalty. Response deadline: 30 days from service. Response mode: Payment via e-filing portal; or appeal under Section 246A; or rectification under Section 154; or stay application under Section 220(6). Consequence of non-compliance: Interest at 1% per month (Section 220(2)); recovery proceedings (attachment of bank accounts, salary, property under Section 226); penalty under Section 221 (amount not exceeding the tax in arrears). Challenge grounds: Underlying order is disputed in appeal; demand is incorrect on facts; TDS/advance tax not credited.
Document Identification Number (DIN) — Validity Check
CBDT Circular No. 19/2019 dated 14 August 2019 mandates that every communication issued by the Income Tax Department — including notices, orders, summons, and letters — must bear a computer-generated Document Identification Number (DIN). A notice issued without DIN is treated as non-est (never issued) and is invalid. The only exception is where the communication is issued in exceptional circumstances with prior written approval of the Chief Commissioner or Director General and the DIN is generated within 15 working days.
We verify DIN on every notice received. The DIN can be verified on the e-filing portal. If a notice does not bear a DIN, or if the DIN verification fails, this is a standalone ground to treat the notice as invalid.
Faceless Communication — How Notices Are Served Today
Under the Faceless Assessment Scheme (Section 144B), all notices and communications are served electronically through the e-filing portal. The notice is uploaded to the assessee’s account, and an intimation is sent to the registered email address and mobile number. Service is deemed complete when the notice is uploaded to the portal, irrespective of whether the assessee actually opens or reads it.
This means that failure to regularly check your e-filing account can result in missed notices and consequent best judgement assessments. We advise all our clients to check the e-filing portal at least fortnightly and to ensure the registered email and mobile number are current. For our retainer clients, we monitor the portal on their behalf.
Summary — Action Points
Every income tax notice requires a timely, documented response. Section 142(1) notices require document production within the specified period — non-compliance leads to best judgement assessment. Section 143(2) scrutiny notices initiate full assessment — verify service within time and respond to each questionnaire factually. Section 148 reassessment notices require immediate professional attention — the Section 148A response is your best chance to prevent the reopening before it begins. Section 156 demand notices require payment within 30 days or filing an appeal with stay application. Verify DIN on every notice. At Virtual Auditor, we handle the entire lifecycle — from notice verification to response drafting to appeal representation. Contact us at +91 99622 60333 or check our pricing for service-specific costs.
Frequently Asked Questions
What is a Section 142(1) notice under the Income Tax Act?
A Section 142(1) notice is an inquiry notice issued by the Assessing Officer either before or during assessment proceedings. It can require the assessee to file a return (if not already filed), produce accounts or documents, or furnish information on specified points. It is not a scrutiny notice but may precede one. Non-compliance can lead to best judgement assessment under Section 144 and penalty of Rs 10,000 per default under Section 272A(1)(d).
What is the time limit to respond to a Section 143(2) scrutiny notice?
The assessee must comply within the time specified in the notice, typically 15 to 30 days. The notice itself must be served within 3 months from the end of the financial year in which the return was filed. A notice served beyond this time limit is invalid and the entire scrutiny assessment can be challenged on this ground alone.
What happens if I do not respond to an income tax notice?
For Section 142(1): best judgement assessment under Section 144 plus penalty under Section 272A(1)(d) of Rs 10,000 per default. For Section 143(2): ex-parte assessment with additions based on available material. For Section 148: reassessment on best judgement basis with forfeiture of objection rights. For Section 156: recovery proceedings including attachment of bank accounts, salary, and property.
Can I receive an income tax notice on email?
Yes. Under the Faceless Assessment Scheme (Section 144B), all communications are served electronically through the e-filing portal. The notice is uploaded to your account on incometax.gov.in and an intimation is sent to your registered email and mobile. Service is deemed complete when uploaded to the portal, regardless of whether you actually open it.
What is a Section 156 demand notice and how do I respond?
A Section 156 demand notice is issued after an assessment or penalty order, specifying the tax, interest, and penalty payable. You must pay within 30 days of service. If you disagree, file an appeal before CIT(A) within 30 days and apply for stay of demand under Section 220(6). The CBDT instruction provides that stay should normally be granted if 20% of the disputed demand is paid.
How much does it cost to respond to an income tax notice?
Section 142(1) inquiry response: from Rs 5,000. Section 143(2) scrutiny representation: from Rs 25,000. Section 148 reassessment defence: from Rs 25,000 (response) to Rs 50,000 (complete representation). Section 156 demand dispute with appeal filing: from Rs 30,000. Contact Virtual Auditor at +91 99622 60333 for a case-specific quote.
What is a Section 131 summons and is it different from a notice?
A Section 131 summons carries the powers of a civil court — non-compliance can lead to prosecution under Section 174 IPC (Section 228 BNS). Unlike a Section 142(1) notice, a summons compels attendance for examination on oath and production of books. It is typically used during investigation proceedings or when the Department suspects concealment or evasion.
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