Income Tax Demand Notice 143(1) – Complete Guide for Indian Taxpayers

📋 Income Tax Guide • India

Income Tax Demand Notice
Section 143(1) — Complete Guide

Everything Indian taxpayers need to know about CPC intimation, tax demands, refunds, rectification, and responding to the e-filing portal — explained with visuals, tables, and timelines.

📅 Updated 2026

⏱️ 12 min read

🇮🇳 For Indian Taxpayers

📊 At a Glance

Months Time Limit to Issue Intimation

Days to Respond to a Demand

Monthly Interest under Section 220(2)

154

Section for Rectification Request

What Is Section 143(1) Intimation?

Receiving an email from the Income Tax Department titled “Intimation under Section 143(1)” can make any salaried employee, business owner, or freelancer nervous. Take a deep breath — in most cases, this is not a tax demand notice at all. It is a routine acknowledgement that your Income Tax Return (ITR) has been processed by the Centralised Processing Centre (CPC), Bengaluru.

🔍 Quick Definition: The intimation under Section 143(1) of the Income Tax Act, 1961 is a preliminary assessment communication sent automatically after your ITR is processed electronically. It compares the income, deductions, TDS, TCS, advance tax, and self-assessment tax declared by you with data available in Form 26AS, AIS (Annual Information Statement), and TIS (Taxpayer Information Summary).

🎯 Three Possible Outcomes

Every 143(1) intimation falls into one of three categories. Here’s a visual breakdown:

Distribution of 143(1) Outcomes

Common Reasons for Tax Demand

✓

Scenario 1: No Demand, No Refund

Figures in both columns match. Your return is accepted as filed. No action required. Save the intimation as proof that ITR is processed.

💰

Scenario 2: Refund Due

You’ve paid more tax than your liability. Refund will be credited to your pre-validated bank account via SBI as refund banker.

⚠

Scenario 3: Tax Demand Raised

Additional income tax liability due to mismatch or disallowance. You must respond within 30 days on the e-filing portal.

📌 Why Does the IT Department Issue 143(1)?

Think of this intimation as a computerised review of your return — a summary assessment, not a detailed scrutiny. It is fundamentally different from a Section 143(2) scrutiny notice or a Section 148 reassessment notice.

⏰ Time Limit: Under current provisions of the Income Tax Act, the intimation must be issued within 9 months from the end of the financial year in which the return was filed. If no intimation arrives within this period, your self-assessment is deemed accepted.

📑 Key Components of the Intimation

When you open the PDF intimation, you’ll see a side-by-side comparison table. Here’s what each column represents:

📝 As Provided by Taxpayer

Gross total income declared

Chapter VI-A deductions claimed (80C, 80D, 80G)
Total taxable income
Tax payable as per ITR

TDS / TCS / advance tax claimed
Rebate under Section 87A

⚙️ As Computed under 143(1)

Income verified via Form 26AS / AIS

Deductions allowed after validation
Recomputed taxable income
Tax with surcharge & Health Education Cess

TDS credit confirmed
Interest under Section 234A, 234B, 234C

📌 Document Identification Number (DIN): Every intimation carries a unique DIN on top. Always quote this number in any correspondence or response on the e-filing portal.

⚠️ Top 10 Reasons for Mismatch & Demand

#	Reason	Section / Form Involved	Severity
1	TDS mismatch with Form 26AS / AIS	Form 26AS	🔴 High
2	Under-reported bank / FD interest	Section 56	🔴 High
3	Disallowance of 80C / 80D / HRA	Chapter VI-A	🟡 Medium
4	Arithmetical error in return	Section 143(1)(a)	🟢 Low
5	Wrong rebate under Section 87A	Section 87A	🟡 Medium
6	Mismatch between Form 16 and ITR	Form 16	🔴 High
7	Wrong tax regime selection	Section 115BAC	🔴 High
8	Capital gains computation error	Section 45, 48	🟡 Medium
9	Foreign income / assets not reported	Schedule FA	🔴 High
10	Prima facie inconsistency	Section 143(1)(a)	🟡 Medium

💻 How to Download the 143(1) Intimation

Login

Visit incometax.gov.in and login with PAN and password.

Navigate

Go to e-File → Income Tax Returns → View Filed Returns.

Select AY

Choose the relevant Assessment Year for which intimation is needed.

Download

Click Download Intimation Order to get the PDF.

Open PDF

Password: PAN (lowercase) + DOB (DDMMYYYY).

📨 How to Respond to a Demand Notice

If your intimation shows a tax demand, you have three response options on the e-filing portal:

👍

Option 1: Agree with Demand

Pay tax via Challan ITNS 280 selecting (400) Tax on Regular Assessment. Then submit response with CIN on portal.

⚖️

Option 2: Disagree with Demand

Select reason (already paid, wrong TDS credit, etc.) and upload supporting documents — Form 26AS, Form 16, challans.

🔧

Option 3: File Rectification

Under Section 154 for apparent mistakes — tax credit mismatch, arithmetic error, or reprocess request.

📈 Cost of Ignoring the Demand Notice

How Interest Accumulates on Outstanding Demand (Section 220(2))

🚨 Consequences of Non-Response:

Interest under Section 220(2) @ 1% per month

Penalty under Section 221 up to the demand amount
Adjustment of future refunds under Section 245
Possible prosecution under Section 276C for wilful evasion

Bank account attachment by Tax Recovery Officer

🔄 143(1) vs Other Income Tax Notices

Many taxpayers confuse different notices. Here’s a clear differentiator:

Section	Type of Notice	Purpose	Action Required
143(1)	Intimation	Summary assessment after CPC processing	Respond if demand raised
143(2)	Scrutiny Notice	Detailed examination of return	Submit details, attend hearings
143(3)	Assessment Order	Final order after scrutiny	Pay demand or appeal
148	Reassessment Notice	Income escaping assessment	File return again
156	Demand Notice	Formal demand after assessment	Pay within 30 days
245	Adjustment Notice	Refund adjusted against past demand	Respond within 30 days
139(9)	Defective Return	Return found defective	Rectify within 15 days
142(1)	Inquiry Notice	Call for further information	Submit requested details

⏱️ Typical Processing Timeline

Day 0

File ITR & E-Verify

Submit return on incometax.gov.in and verify within 30 days using Aadhaar OTP, net banking, or EVC.

Day 15–45

CPC Processing

Centralised Processing Centre, Bengaluru processes your return through automated reconciliation.

Day 30–90

Intimation Received

143(1) intimation arrives via email with DIN. Three outcomes possible — accepted, refund, or demand.

Within 30 days

Respond to Demand (if any)

Pay, disagree, or file rectification under Section 154 on the e-filing portal.

Up to 9 Months

Final Deadline for Intimation

If no intimation by end of 9 months from FY of filing, your self-assessment is deemed accepted.

✅ How to Avoid Receiving a Demand

✓

Reconcile Form 26AS, AIS, and TIS before filing your return.

✓

Verify TDS certificates — Form 16, 16A, 16B, 16C.

✓

Report all income sources — salary, house property, capital gains, business, other sources.

✓

Claim only genuine deductions with valid proofs (LIC, PPF, ELSS, NPS, health insurance).

✓

Select the correct tax regime — old regime vs new regime under Section 115BAC.

✓

Disclose interest income from savings bank, FDs, RDs, bonds, post office schemes.

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Report mutual fund redemptions with correct indexed cost of acquisition.

✓

File before due date under Section 139(1) to avoid Section 234A interest.

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Pay advance tax in 4 installments to avoid Section 234B & 234C interest.

✓

E-verify within 30 days using Aadhaar OTP, net banking, or EVC.

💸 Refund Intimation — The Welcome Version

A refund intimation is the most welcome version of 143(1). Here’s how it flows:

Refund Processing Flow

💡 Did You Know? If your refund is delayed, you’re entitled to interest under Section 244A @ 0.5% per month from 1 April of the assessment year (for returns filed on time) until the date of refund credit.

🔧 Rectification Under Section 154

If the CPC ignored your TDS credit or wrongly disallowed a deduction, file a rectification under Section 154.

Rectification Category	When to Use	Time Limit
Tax Credit Mismatch	TDS/TCS/Advance Tax not considered	4 years from FY end of intimation
Return Data Correction	Wrong income figures considered	4 years from FY end of intimation
Reprocess the Return	Minor recomputation needed	4 years from FY end of intimation
Status Correction	Residential status, gender, etc.	4 years from FY end of intimation

⚖️ Appeal Hierarchy

If rectification doesn’t solve the issue, follow this appeal hierarchy:

Appeal Levels Under Income Tax Act

👔 Tips for Salaried Employees vs Self-Employed

💼 Salaried Employees

Cross-check Part A & B of Form 16 with salary slips
Verify professional tax & ₹50,000 standard deduction

Confirm HRA exemption under Section 10(13A)
Ensure employer’s PAN/TAN is correct
Report NPS contribution under Section 80CCD(2)

Include previous employer income if job changed

💼 Self-Employed / Freelancers

Maintain books of accounts under Section 44AA
Opt for presumptive taxation: 44AD, 44ADA, 44AE

Reconcile GST turnover with ITR income
Report TDS under Section 194J, 194C, 194H
Claim business expenses with valid invoices

Disclose UPI/digital payment receipts

❓ Frequently Asked Questions

Q1. Is 143(1) intimation a notice or just an acknowledgement?

It is technically an intimation, not a notice. However, when it raises a tax demand, it functions as a demand notice requiring action within 30 days.

Q2. How long does it take to receive a 143(1) intimation?

Usually 15 to 90 days after e-verification, but the department has up to 9 months from the end of the financial year of filing.

Q3. What is the password to open the 143(1) PDF?

PAN in lowercase followed by date of birth in DDMMYYYY format. Example: abcde1234f15081985

Q4. Can I revise my return after receiving 143(1)?

Yes, a revised return under Section 139(5) can be filed before 31 December of the assessment year or before completion of assessment, whichever is earlier.

Q5. What if the demand is wrongly raised?

File a rectification under Section 154 or submit a “Disagree with Demand” response on the e-filing portal with supporting documents.

Q6. Can the department adjust my refund against an old demand?

Yes, under Section 245, but only after giving you an opportunity to respond within 30 days.

Q7. Is there a fee to file a rectification?

No, filing a rectification request under Section 154 is completely free of cost on the e-filing portal.

Q8. What if I miss the 30-day response window?

Interest under Section 220(2) @ 1% per month and penalty under Section 221 may apply. You can still respond, but consequences increase with delay.

🎯 Final Word

A 143(1) intimation is not something to fear — it’s the system’s way of telling you that your ITR has been processed. File accurately, reconcile with Form 26AS and AIS, claim only legitimate deductions, e-verify on time, and respond promptly. Treat every intimation as an opportunity to strengthen your financial discipline.

📞 CPC Helpline: 1800-103-0025 / 1800-419-0025

Income Tax Demand NoticeSection 143(1) — Complete Guide