Priya is a software engineer in Bengaluru. One Monday morning, she gets an email from the Income Tax Department saying she has received a notice under Section 143(1). Her heart sinks. She calls her mother, who tells her this means she’s being audited and might go to jail. Her colleague says it’s just a routine thing and to ignore it. Priya has no idea who’s right — or what to do next.

📍 Millions of Indians receive income tax notices every year — most don’t know what to do

Getting an income tax notice can feel scary. But here’s the truth: most income tax notices are not alarming. Many are routine system-generated communications asking for minor clarifications. The key is knowing which type of notice you received, what it means, and responding correctly within the deadline.

Ignoring a notice, however, is never the right move — and that is where real trouble begins.

8+
Different types of IT notices under the Act
15–30
Days typical response window for most notices
200%
Penalty on tax evaded if concealment is proven
🧘

First Things First — Stay Calm and Do This

Immediate steps when you receive any income tax notice

The moment you receive a notice — whether by email, on the income tax portal, or by post — do these three things before anything else:

1
Verify Authenticity

Check if the Notice is Genuine

All real income tax notices have a Document Identification Number (DIN) printed on them. Go to the Income Tax e-filing portal (incometax.gov.in) → Services → Verify Notice / Order Issued by ITD → Enter the DIN. If the notice doesn’t have a DIN or if it doesn’t match on the portal — it may be fraudulent. Do not respond to or pay anything based on a fake notice.

2
Identify the Section

Read the Section Number Carefully

Every income tax notice mentions the section of the Income Tax Act under which it is issued (e.g., Section 143(1), Section 139(9), Section 148). This section number tells you exactly what the department wants from you and how serious the notice is. This is the single most important piece of information on the notice.

3
Note the Deadline

Find the Response Deadline — Don’t Miss It

Every notice has a response deadline. Mark it on your calendar immediately. Missing this deadline can result in ex-parte assessment (the department decides your tax without hearing your side), penalties, and in serious cases, prosecution. Even if you need more time, you can request an extension — but you must do this before the deadline.

📌
All Notices Are Now Digital — Check Your e-Filing Portal

From 2021 onwards, the Income Tax Department issues all notices only through the e-filing portal (incometax.gov.in) and registered email. If you haven’t logged into the portal in a while, do it today — you may have unread notices waiting for you under e-Proceedings section.

📬

Types of Income Tax Notices — And What Each One Means

From routine intimations to serious scrutiny — know the difference

The Income Tax Act has several sections under which notices are issued. Each has a very different meaning and requires a very different response. Here’s a complete breakdown:

🟢
Low Severity
Routine / Informational
Sec 143(1), 139(9), 154
🟡
Medium Severity
Needs Documentation
Sec 143(2), 142(1), 133(6)
🔴
High Severity
Scrutiny / Serious
Sec 148, 156, 271, 276
Sec 143(1)
Intimation / Mismatch Notice
🟢 Very Common — Usually Routine

What it means: This is an automated intimation from the Income Tax Department’s computer system. It compares your filed ITR with data from Form 26AS, AIS, and employer/bank records. It either confirms your return is accepted as-is, or flags a mismatch.

Common reasons: Difference in TDS credit, income not declared, wrong deduction claimed, or arithmetic error in ITR.

What to do: If it shows a refund or zero demand — just keep it as acknowledgement. If it shows a demand — either pay it or file a rectification (Form 139(9)) if you believe it’s wrong.

Sec 139(9)
Defective Return Notice
🟢 Common — Usually Fixable

What it means: Your ITR has been filed but the department has found it to be “defective” — meaning it is incomplete or has an error that makes it technically invalid.

Common reasons: Filed wrong ITR form, incomplete schedules, TDS claimed without income declared, PAN mismatch, or balance sheet not attached for business returns.

What to do: Respond through the e-filing portal within 15 days by correcting the defect and re-submitting. If you don’t respond, your ITR is treated as not filed — which has serious consequences.

Sec 143(2)
Scrutiny Assessment Notice
🟡 Medium — Needs Serious Attention

What it means: Your return has been selected for detailed scrutiny. The officer wants to examine your income, deductions, and tax claims in depth. This is not random — your return was flagged by a risk assessment system.

Common reasons: High deductions vs income ratio, large cash deposits, mismatch with Form 26AS/AIS, sudden income spikes, or high-value transactions reported by banks/registrars.

What to do: Respond with supporting documents within the deadline. Strongly recommended to hire a CA for this notice. Never ignore it.

Sec 142(1)
Notice to Furnish Documents / File Return
🟡 Medium — Respond Fully

What it means: Issued during an assessment proceeding. The officer is asking you to either: (a) file your ITR if you haven’t, or (b) produce specific accounts, documents, or explanations to support what you’ve declared.

Common reasons: ITR not filed despite income, request for books of accounts, supporting documents for deductions claimed, or property purchase details.

What to do: Respond with exactly what is asked. Do not provide more than what is requested. If documents are voluminous, request additional time in writing through the portal before the deadline.

Sec 148
Reassessment / Reopening Notice
🔴 High — Take Immediately Seriously

What it means: The department believes income “escaped assessment” in a past year — meaning income you earned was not declared or was under-assessed. They are reopening a closed assessment year for re-examination.

Common reasons: Information received from banks, property registrar, foreign accounts, or informants; high-value cash transactions; discrepancy in return vs third-party data.

What to do: File a reply within the deadline, then file a fresh ITR for the relevant year. This is serious — engage a CA immediately. Time limits: Within 3 years if income escaped is under ₹50 lakhs; up to 10 years for amounts above ₹50 lakhs.

Sec 156
Notice of Demand
🔴 High — Pay or Dispute Within 30 Days

What it means: After an assessment is completed (either regular or scrutiny), the department has determined you owe additional tax. This notice formally demands payment of that tax along with interest.

Common reasons: Disallowed deductions, additional income found during scrutiny, TDS credit mismatch, or errors in your original return.

What to do: You must either pay the demand within 30 days OR file an appeal before the Commissioner of Income Tax (Appeals) within the prescribed time if you disagree. Interest continues to accrue at 1% per month if unpaid.

Sec 154
Rectification Notice
🟢 Low — Can Be an Opportunity

What it means: Either the department has found an apparent mistake in your assessment order and is correcting it, OR you have filed a rectification request and this is the response. Section 154 covers “mistakes apparent from records” — obvious arithmetic or data entry errors.

What to do: If the department issued it, review the changes. If you filed the application, check if it was accepted or rejected. You can also proactively file a 154 application if you spot an error in your assessment order.

Sec 133(6)
Information / Third-Party Notice
🟡 Medium — Provide Information Accurately

What it means: The department is seeking information about a third party — usually a person you transacted with. OR you received it because the department suspects you have undisclosed income and wants specific transaction details from you.

Common reasons: Large property purchase, high-value bank transactions, cash deposits above threshold, or foreign remittances flagged by banks or FEMA.

What to do: Provide accurate, honest information with supporting documents. Do not withhold or misrepresent. Non-compliance attracts penalty under Section 272A.

🎯

What Actually Triggers an Income Tax Notice?

Common reasons the IT Department flags your return

The Income Tax Department uses an advanced risk-based selection system called CASS (Computer-Aided Scrutiny Selection) that cross-references data from dozens of sources. Here are the most common triggers:

Trigger What the Department Sees Notice Type Likely
TDS / AIS Mismatch TDS deducted on your PAN (Form 26AS) doesn’t match income declared in ITR Sec 143(1)
Large Cash Deposits Bank reports cash deposits above ₹10 lakh in a year; not reflected in ITR Sec 133(6) / 148
High-Value Property Purchase Property registrar reports sale above ₹30 lakh; buyer hasn’t declared income source Sec 142(1) / 133(6)
Large Deductions vs Low Income You claim ₹1.5L 80C deduction but show very low income; CASS flags the ratio Sec 143(2)
Foreign Income / FEMA Foreign remittances reported by bank or FEMA not declared in ITR Sec 148 / 142(1)
ITR Not Filed Despite Income TDS deducted on salary/FD, but no ITR filed for that year Sec 142(1)
Sudden Income Spike Income increased by 200%+ compared to prior year without explanation Sec 143(2)
Crypto / High-Value Stock Trades Large gains from crypto or stocks reported by exchanges; not in ITR Sec 143(1) / 148
Defective Return Filed Wrong ITR form used, incomplete schedule, or missing documents Sec 139(9)
✍️

How to Respond to an Income Tax Notice — Step by Step

The correct process for any notice received on the e-filing portal
  1. 1
    Login to incometax.gov.in Go to e-filing portal → e-Proceedings (under “Pending Actions”) → View Notices & Orders. Download and read the full notice carefully. Note the section, assessment year, and response deadline.
  2. 2
    Gather all relevant documents Depending on the notice type, collect: ITR acknowledgement, Form 16, Form 26AS, AIS/TIS, bank statements, investment proofs, property documents, or business books — whatever the notice is questioning.
  3. 3
    Consult a CA if the notice is 143(2), 148, or 156 For routine 143(1) intimations, you may handle it yourself. But for scrutiny notices (143(2)), reassessment (148), or demand notices (156), always engage a qualified CA or tax consultant. The stakes are higher and the response needs to be professionally drafted.
  4. 4
    Submit your response online — never ignore All responses must be submitted through the e-filing portal under e-Proceedings. Upload all supporting documents. Be factual, concise, and honest. Do not volunteer information beyond what is asked. Keep a copy of your response and all attachments.
  5. 5
    Request extension if you need more time If the deadline is too tight to gather documents, file an adjournment request through the portal before the deadline — not after. Officers generally grant 1–2 extensions for genuine cases. Never let the deadline pass without any response.
  6. 6
    Follow up on the outcome After your response, the officer will either close the proceedings, issue a further query, or pass an assessment order. Check the e-Proceedings section regularly for updates. If an order is passed against you, you have the right to appeal.
💸

Penalties for Ignoring an Income Tax Notice

The real financial cost of non-compliance

Ignoring an income tax notice is not a passive act — it actively makes things worse. Here’s what can happen if you don’t respond:

₹10,000
Penalty under Section 272A
For failure to comply with a notice under Sec 142(1) or 143(2) — ₹10,000 per default, plus prosecution possible.
1% / month
Interest under Section 220(2)
On any unpaid demand (Section 156), interest of 1% per month accrues until full payment — no cap.
50–200%
Penalty under Section 270A
For under-reporting of income: 50% of tax. For willful misreporting or concealment: 200% of tax on the concealed amount.
Ex-Parte
Best Judgement Assessment (Sec 144)
If you don’t respond at all, the officer makes a “best judgement” assessment — usually highly unfavourable, with arbitrary additions to your income. You lose your right to present your side.

🚨 Prosecution is Possible for Serious Non-Compliance

  • Section 276C: Willful attempt to evade tax — imprisonment of 6 months to 7 years, plus fine
  • Section 276CC: Failure to file ITR when tax payable exceeds ₹3,000 — up to 2 years imprisonment
  • Section 277: Making false statements in verification — imprisonment of 3 months to 3 years
  • Prosecution is typically reserved for serious, wilful non-compliance — but the risk increases sharply when notices are repeatedly ignored
⚖️

Do’s and Don’ts When You Receive a Notice

Simple rules that protect you throughout the process

✅ DO These Things

  • Read the notice fully before reacting — understand exactly what is being asked
  • Verify the notice DIN on the e-filing portal immediately
  • Note the response deadline and set reminders
  • Gather supporting documents systematically
  • Consult a CA for any notice other than routine 143(1)
  • Respond online through e-Proceedings — keep a copy
  • Request time extension before the deadline if needed
  • Be truthful and consistent in all responses
  • Keep all communication and document copies safely

❌ DON’T Do These Things

  • Don’t ignore the notice hoping it will go away — it won’t
  • Don’t panic and pay a demand you believe is wrong — appeal first
  • Don’t submit incomplete or incorrect documents
  • Don’t provide more information than what is specifically asked
  • Don’t make payments to anyone claiming to be an IT officer who calls you — all legitimate communication is through the portal
  • Don’t assume a notice means you are being prosecuted
  • Don’t respond to fake notices — verify the DIN first
  • Don’t miss the deadline — even one day late can harm your case
⚖️

Your Rights — You Can Always Appeal

The multi-level appeal hierarchy under Income Tax law

If you disagree with the outcome of any assessment or demand, you have a clear legal right to appeal. Here is the complete appeal chain:

Level Appeal Authority Form to File Time Limit
Level 1 Commissioner of Income Tax (Appeals) — CIT(A) Form 35 30 days from demand notice
Level 2 Income Tax Appellate Tribunal (ITAT) Form 36 60 days from CIT(A) order
Level 3 High Court (on substantial question of law) Writ Petition / Appeal 120 days from ITAT order
Level 4 Supreme Court (final authority) SLP / Civil Appeal 90 days from High Court order
✅
Faceless Appeals — Now Fully Online

Since 2021, all income tax appeals at the CIT(A) level are “faceless” — conducted entirely online through the e-filing portal with no personal appearance before an officer. This means you can file and manage your appeal from anywhere in India, without visiting any tax office.

❓ Frequently Asked Questions

Q
I got a 143(1) intimation showing a demand of ₹500. Do I need to pay it?
First, check whether the demand is correct. Compare the intimation with your ITR and Form 26AS. If it’s due to a TDS mismatch or minor calculation difference that is indeed correct, pay it online through the portal under “Response to Outstanding Demand”. If you believe it’s wrong (e.g., TDS credit was missed), file a rectification request under Section 154 through the portal. Do not simply ignore a demand, even a small one — interest at 1% per month accrues until it’s resolved.
Q
My return was filed correctly. Why did I still get a notice?
This happens very often. The department’s system cross-checks your ITR against third-party data — banks, employers, property registrars, stock exchanges, and more. Even if your return is completely correct, a mismatch in the database (like a TDS entry recorded under a slightly different PAN) can trigger a 143(1) notice. In most such cases, a simple rectification or response with supporting documents closes the matter quickly.
Q
How long does the Income Tax Department have to issue a notice?
The time limits depend on the notice type. For regular assessment under Section 143(2), the notice must be served within 3 months from the end of the financial year in which the return was filed. For reopening of assessment under Section 148, the limit is 3 years from the end of the relevant assessment year (or up to 10 years if escaped income exceeds ₹50 lakhs and there is evidence of assets outside India or serious fraud). If a notice is received beyond these limits, you can challenge it as time-barred.
Q
I missed the deadline to respond. What should I do now?
Act immediately — do not wait further. File your response as soon as possible, even if it is late. The officer may still consider a late response, especially if accompanied by a genuine explanation (illness, travel, unavailability of documents). Also, check whether an ex-parte assessment order has already been passed. If it has, you can file an appeal before the CIT(A) within 30 days of receiving the order, along with a condonation of delay application explaining why you couldn’t respond in time.
Q
I received a phone call from someone claiming to be an Income Tax officer asking me to pay immediately. Is this real?
Almost certainly a scam. The Income Tax Department does NOT call taxpayers on phone demanding immediate payment. All genuine communication happens through the e-filing portal (incometax.gov.in) and registered email, with a verifiable DIN number. Never pay anyone based on a phone call. Report such calls to the Cybercrime Portal (cybercrime.gov.in) or local police. You can also call the official IT helpline at 1800-103-0025 to verify.
Q
Can a notice be cancelled or withdrawn?
Yes. If the notice was issued in error, or if you successfully demonstrate during proceedings that there is no basis for the assessment, the officer can close the proceedings without any demand. For Section 148 notices, you can file an application challenging the notice itself if it was issued without proper satisfaction being recorded by the officer, or if it is beyond the time limit. Courts have frequently quashed notices that were procedurally defective.

🧑‍💼 How This Affects Different People

👩‍💼
Salaried Employee
  • Most likely to get 143(1) for TDS or deduction mismatch
  • Check AIS vs ITR before filing every year
  • Ensure Form 16 matches what you declared
  • 143(1) is usually resolvable without a CA
  • For 143(2) or 148 — get professional help
💼
Freelancer / Consultant
  • High risk of mismatch — multiple clients deduct TDS
  • Reconcile all Form 16A certificates with AIS
  • Declare all freelance income, even from foreign clients
  • Keep invoices and bank statements for 7 years
  • File ITR-4 or ITR-3 correctly — wrong form triggers 139(9)
🏢
Business Owner / MSME
  • Higher scrutiny risk due to cash transactions
  • All cash deposits above ₹10L are reported to IT Dept
  • Maintain proper books of accounts — required for 142(1)
  • Large property purchases trigger automatic notices
  • Keep a CA on retainer for timely notice responses

💡 The Golden Rules — Remember These Always

Income tax notices are a routine part of India’s tax administration. Here’s what you must never forget:

  • Never ignore — every notice deserves a response, even if it’s just to say the information is correct
  • Verify first — check the DIN on the e-filing portal before doing anything
  • Know your section — the section number tells you everything about severity and required action
  • Deadlines are sacred — missing them turns a manageable situation into a serious one
  • Be honest — contradicting your own documents or making false statements makes everything worse
  • You have rights — you can always appeal, challenge, and contest any order you believe is wrong
  • Get help early — a CA consulted on Day 1 costs far less than one hired after an ex-parte order

🛡️ Best Way to Avoid Notices — File Correctly Every Year

Most income tax notices can be completely avoided with good filing hygiene. Before filing your ITR every year, do these four things:

  • Download and review your Annual Information Statement (AIS) on the portal — it shows everything the department knows about you
  • Match your AIS with your Form 26AS and your own income records — resolve every mismatch before filing
  • Use the correct ITR form for your income type — wrong form = automatic 139(9) notice
  • Declare all income — salary, freelance, rental, capital gains, interest, crypto — even if TDS is already deducted

Received a Notice? Don’t Handle It Alone.

Our income tax experts at TaxServiceMitra.com handle notices under all sections — from routine 143(1) mismatch to complex 148 reassessments. Fast, professional, and confidential.

📞 Get Expert Help Now →

Disclaimer: This article is for informational purposes only and does not constitute legal or tax advice. All section references are to the Income Tax Act, 1961 (applicable until March 31, 2026) and the Income Tax Act, 2025 (applicable from April 1, 2026). Section numbers may change under the new Act — consult the official portal or a qualified CA for updated references. Please consult a qualified tax professional for advice specific to your situation. Published on TaxServiceMitra.com, March 2026.