Income tax notice response framework 2026: Section 143(1), 143(2), 148, 139(9), 142(1) complete guide

Income tax notice email/SMS aaya hai? First reaction: panic. But most notices are routine processing (Section 143(1) intimation — gets issued for every return). Only 3-5% returns face actual scrutiny via Section 143(2).

Knowing your notice type is half the battle. Knowing the response timeline + procedure is the other half. Ignored notices escalate from ₹500 routine issue to ₹10K-10L tax demands + scrutiny escalation + appeal proceedings.

This article gives you:

• 8 major notice types decoded
• Time limits for issuance + response
• e-Proceedings portal step-by-step
• Appeal mechanism if assessment goes against you
• Faceless assessment scheme impact
• 7 common notice mistakes
• Action plan for every scenario

# Notice typology — 8 major types

# Quick reference

# Section 143(1) — The Routine Intimation

# What it is

Automated processing intimation issued after Income Tax Department processes your ITR. EVERY ITR receives an intimation (or it's deemed accepted within 12 months).

# Types of 143(1) intimations

1. Acceptance — No adjustments. Refund (if any) processed.
2. 143(1)(a) Prima facie adjustment — Department identifies mismatch and proposes adjustment.
3. Demand — Additional tax payable due to adjustments.

# Common 143(1)(a) adjustment triggers

• Form 26AS TDS vs ITR TDS mismatch
• AIS income vs ITR income mismatch
• Computational errors (slab tax calculation, surcharge, cess)
• Disallowed deductions (proof not uploaded for 80G, 80D, etc.)
• Capital gains computation differences

# Response window

30 days from intimation date.

# Response options

# Non-response

30 days passed → adjustment deemed accepted → demand becomes recoverable, refund (if any) reduced.

# Where to access

e-Filing portal → Pending Actions → e-Proceedings → "Pending Intimation 143(1)"

# Section 143(2) — Scrutiny Selection Notice

# What it is

Selective scrutiny notice triggering detailed assessment under Section 143(3).

# When issued

Within 3 months from end of FY of return filed.

Example:

• ITR for FY 2024-25 filed 30 July 2025
• FY end of filing = 31 March 2026
• 143(2) can be issued till 30 June 2026

# Why selected

• Random selection (CASS — Computer-Assisted Scrutiny Selection)
• High-risk indicators (large refund, sudden income change, AIS mismatches)
• Specific intelligence (search/survey-based)
• Threshold-based (e.g., income > ₹50L)

# Response procedure

1. Notice received via portal + email + SMS
2. Login → e-Proceedings → Respond
3. Provide documents requested: - Bank statements - Form 16, 26AS, AIS - Investment proofs - Expense documentation - Foreign asset details (if applicable)

1. AO may request more documents via subsequent notices
2. Video conference hearing (if requested under Faceless Assessment)
3. Final 143(3) assessment order

# Time limit for assessment

12 months from end of FY of relevant AY under Section 153.

# Penalty for non-response

Section 271AB — ₹10,000 per default + scrutiny escalation.

# Section 142(1) — Inquiry Notice

# What it is

Pre-assessment inquiry notice under Section 142(1). Asks for specific information from taxpayer.

# When issued

• Before completing assessment (with 142(1)(i))
• If return not filed (with 142(1)(ii))
• For specific information (with 142(1)(iii))

# Common 142(1) requests

• File ITR if not filed
• Provide books of accounts
• Submit bank statements for specific period
• Explain specific transactions
• Provide source of income for high-value items

# Response window

As specified in notice (typically 15-30 days).

# Penalty for non-compliance

Section 272A — ₹10,000 per default. Repeat defaults → escalating penalties.

# Section 148 / 148A — Reassessment for Escaped Income

# What it is

Reassessment notice under Section 148 for income that "escaped" earlier assessment. Most consequential notice type.

# Mandatory Section 148A pre-procedure (since Finance Act 2021)

Step 1: Section 148A(1) — Show Cause Notice (SCN)

• AO issues SCN explaining why reassessment proposed
• Specifies escaped income amount and basis
• Provides taxpayer opportunity to respond

Step 2: Section 148A(2) — Inquiry

• AO can conduct preliminary inquiry
• Information from third parties

Step 3: Section 148A(3) — Taxpayer Response

• Taxpayer responds within time specified (typically 30 days)
• Documentary support, legal arguments
• Right to reply

Step 4: Section 148A(4) — Order

• AO passes order to either: - Drop the proposal (no reassessment), OR - Approve issuance of 148 notice (with specified authority approval)

Step 5: Section 148 Notice

• Formal reassessment notice
• Taxpayer must file return within specified time (max 3 months from end of month of notice)

# Time limits (post Sept 2024 amendments)

# AY-wise deadline matrix (as of May 2026)

# Notice response strategy

1. Don't ignore — engagement of qualified CA + advocate strongly recommended
2. Section 148A response is critical — strong factual response can prevent 148 notice
3. File ITR if 148 notice issued — within timeline (max 3 months from end of month of notice)
4. Documentation — All bank statements, source documentation, transaction support
5. Appeal options — If reassessment order goes against, CIT(A) appeal within 30 days

# Section 139(9) — Defective Return Notice

# What it is

Notice issued when ITR has errors making it invalid. Most common notice type after 143(1).

# Common defects

# Critical 15-day response window

Non-response in 15 days → Original return treated as NEVER FILED.

Consequences:

• Late filing penalty (₹5,000 under Section 234F)
• Interest under 234A from original due date
• Loss of carry forward benefits
• Scrutiny escalation risk
• Refund forfeited

# Response procedure

1. Login portal → View Filed Returns
2. Identify defective return
3. "Respond to Defective Notice" option
4. Two options: - Agree with defect → Rectify by filing corrected return - Disagree → Submit explanation with reasoning

# Best practice

Agree + Rectify is the standard approach for most defects. Filing revised return with corrected information cleanly resolves the defect.

# Section 156 — Demand Notice

# What it is

Tax demand notice following assessment order, intimating amount payable.

# When issued

• After 143(1) adjustment
• After 143(3) scrutiny assessment
• After 148 reassessment
• After penalty orders (271, 270A)

# Demand contents

• Tax due
• Interest under 234A/B/C
• Penalty (if any)
• Total payable

# Response options

• Pay within 30 days — via Challan 280
• Apply for stay — Section 220(6) — partial payment + stay application
• File appeal — Section 246A CIT(A) within 30 days
• Rectification — Section 154 if mistake apparent

# Section 245 — Refund Adjustment

# What it is

Notice intimating refund adjustment against pending tax demand.

# Process

1. Department identifies pending demand
2. Notifies taxpayer of proposed adjustment via Section 245 intimation
3. 30-day response window to either: - Agree → refund adjusted automatically - Disagree → provide reasoning (e.g., demand already paid)

# Non-response

Adjustment proceeds → reduced or zero refund.

# e-Proceedings portal — step-by-step

# Accessing notices

1. Login income tax e-filing portal (https://www.incometax.gov.in)
2. Navigate to "Pending Actions" → "e-Proceedings"
3. List of all pending notices by AY and section

# Viewing notice details

• Type and section
• Date of issuance
• Response deadline
• Documents requested
• AO details (in faceless assessments, anonymized)

# Submitting response

1. Click "Submit Response" against the notice
2. Type response in text box (or attach as document)
3. Upload supporting documents: - PDF format preferred - Maximum 5MB per file - Multiple files allowed - Naming convention: "NoticeSectionDocumentType_Date.pdf"

1. Digital signature: - Aadhaar OTP (individual non-audit cases) - DSC (Digital Signature Certificate) for audit cases / companies

# Tracking status

• Acknowledgment number generated
• AO response timeline displayed
• Subsequent notices arrive via portal
• Final order via portal

# Faceless assessment specifics

• Random allocation via NeAC (National e-Assessment Centre)
• No physical hearing typically
• Video conference hearing if requested (Section 144B)
• All correspondence via portal
• Specified authority involvement at key stages (Section 151)

# Common notice mistakes

# Mistake #1: Ignoring 143(1) routine intimation

Issue: 30-day window passes → adjustment becomes final demand
Fix: Read every 143(1). Respond even if accepting.

# Mistake #2: Confusing 143(1) with 143(2)

Issue: Panic over routine processing notice OR ignoring scrutiny notice
Fix: Check section number carefully. 143(1) = routine; 143(2) = scrutiny.

# Mistake #3: Missing 15-day window for 139(9)

Issue: Original return invalidated → late filing penalty + scrutiny
Fix: 15-day calendar alert + immediate revised return filing.

# Mistake #4: DIY response to Section 148 reassessment

Issue: Wrong technical/legal response → reassessment proceeds
Fix: Engage CA + advocate immediately. Cost ₹50K-2L worth it for ₹5-50L exposure.

# Mistake #5: Not uploading supporting documents

Issue: Response without proof → demand finalized
Fix: Always attach bank statements, Form 16, broker reports, etc.

# Mistake #6: Email/paper responses

Issue: Department doesn't accept; deemed non-response
Fix: ALL responses via e-Proceedings portal only.

# Mistake #7: Missing appeal deadlines

Issue: 30-day CIT(A) appeal window passes → only special leave petition possible
Fix: 30-day calendar alert post any adverse order.

# Action plan — Notice received today

# Day 0: Read carefully

• Section number identification
• AY mentioned
• Response deadline
• Amount involved (demand/adjustment)

# Day 1-2: Categorize urgency

• Routine 143(1) acceptance: Low priority
• 139(9) defective: 15 days — immediate action
• 143(2) scrutiny: Moderate urgency, proper response prep
• 148 reassessment: Critical — engage professionals immediately

# Day 3-5: Document gathering

• ITR copy
• Form 16, 26AS, AIS, TIS
• Bank statements for relevant period
• Source documents (sale deeds, investment proofs, salary slips)

# Day 6-10: Response preparation

• Self for routine (143(1), 139(9))
• CA for substantive (143(2), 142(1))
• CA + advocate for complex (148, post-assessment appeals)

# Within deadline: Submit via portal

• Response text + uploaded documents
• Digital signature
• Save acknowledgment

# Follow-up

• Track status weekly via portal
• Respond to subsequent notices promptly
• Maintain organized file of all communications

# References (verified 23 May 2026)

• Income Tax India — Reassessment Proceedings FAQ
• Patron Accounting — Section 148 Notice 2026 Complete Guide
• Tax2win — Section 143(2) Scrutiny Notice Guide
• Tax2win — Section 148 Notice Reassessment Guide
• ClearTax — Types of Income Tax Notices and Time Limits
• PGA & Co — Income Tax Notice Time Limits Updated 2026
• Patron Accounting — Income Tax Section 148 Notices 2026

Disclaimer: Yeh article educational guidance hai based on Income Tax Act 1961 provisions with Income Tax Act 2025 transition (effective 1 April 2026 for Tax Year 2026-27 onwards). Notice handling and response strategies are subject to specific facts of each case. Section 148 reassessment cases require qualified CA + advocate engagement immediately on receipt. Time limits computed on best information as of 23 May 2026; specific cases should consult current Income Tax Department portal updates. Data verified 23 May 2026.

Written by

Prabhakar Kumar

Chartered Accountant (ICAI, Nov 2019)

Founder of VittSphere Technologies. Practicing CA serving 200+ MSME clients across Pune. 86% win-rate at AO and CIT(A) level tax appeals. Writes on Indian taxation, capital gains, and personal finance.