Income Tax Notice Under Section 143(1) — What It Means and How to Respond

Receiving an income tax notice can be alarming. But a notice under Section 143(1) is the most common and least serious type — it is simply the Income Tax Department's automated processing result for your ITR. Here is everything you need to know.

What is Section 143(1)?

Section 143(1) is the initial automated processing of your income tax return by the Centralised Processing Centre (CPC) in Bengaluru. After you file your ITR, the CPC:

1. Checks for arithmetic errors
2. Verifies TDS credits against Form 26AS
3. Checks for incorrect deduction claims
4. Compares your declared income with AIS data

The result is sent to you as an Intimation under Section 143(1) — not a scrutiny notice. It is automated, not a human review.

Types of 143(1) Intimation

1. No Demand, No Refund

Your ITR matches the department's computation. No action required.

2. Refund Intimation

The department agrees you are owed a refund. The refund will be credited to your bank account within 15-45 days.

3. Demand Notice

The department's computation shows you owe additional tax. You must either pay or dispute within 30 days.

4. Proposed Adjustment Notice (143(1)(a))

Before making an adjustment, the department sends a preliminary notice asking you to respond within 30 days. If you do not respond, the adjustment is made automatically.

How to Open the 143(1) Intimation

The intimation is sent to your registered email as a PDF attachment. The password to open it is:

PAN in lowercase + date of birth in DDMMYYYY format

Example: If your PAN is ABCDE1234F and date of birth is June 15, 1990, the password is: abcde1234f15061990

Common Reasons for a Demand Notice

1. TDS Mismatch

The most common reason. The TDS you claimed in your ITR does not match Form 26AS.

Cause: Your employer or bank filed incorrect TDS returns, or you entered the wrong TDS amount.

Solution: Check Form 26AS. If the TDS is correctly reflected there, the error is in your ITR — file a revised return. If TDS is missing from Form 26AS, contact the deductor to correct their TDS return.

2. Income Not Reported

AIS shows income (interest, dividends, capital gains) that you did not report in your ITR.

Solution: If the income is genuine, file a revised return including it. If AIS is incorrect, submit feedback on the AIS portal and respond to the notice explaining the discrepancy.

3. Incorrect Deduction Claim

You claimed a deduction (80C, 80D, HRA) that the department has disallowed.

Common examples:

• 80C claim exceeds ₹1.5L
• HRA claimed under new regime (not allowed)
• 80D premium paid in cash (not allowed)

Solution: If the deduction is valid, provide proof. If it was an error, accept the adjustment and pay the demand.

4. Arithmetic Error

A calculation mistake in your ITR.

Solution: Accept the correction if it is genuinely an error.

How to Respond to a 143(1) Demand Notice

You have 30 days from the date of intimation to respond. Do not ignore it — if you do not respond, the demand becomes final and recovery proceedings begin.

Step 1: Login to the IT Portal

Go to incometax.gov.in and login.

Step 2: Go to Pending Actions

Navigate to Pending Actions → Response to Outstanding Demand

Step 3: Review the Demand

Click on the demand to see the detailed computation. Compare it with your ITR to understand the discrepancy.

Step 4: Choose Your Response

Option A: Agree with the demand If the demand is correct, click Agree and pay the amount online via e-Pay Tax. Include interest under Section 220(2) if applicable.

Option B: Disagree with the demand If you believe the demand is incorrect, click Disagree and provide your explanation with supporting documents.

Option C: File a Revised Return If the error is in your ITR (e.g., you forgot to report income), file a revised return under Section 139(5) before the deadline (March 31, 2027 for FY 2025-26).

Option D: File a Rectification Request If the error is in the department's processing (e.g., TDS not credited), file a rectification request under Section 154 on the portal.

How to File a Rectification Under Section 154

If the demand is due to a processing error (TDS not credited, wrong PAN, etc.):

1. Go to e-File → Rectification
2. Select the assessment year
3. Choose the type of rectification:
   • Tax Credit Mismatch — for TDS issues
   • Return Data Correction — for data entry errors
4. Upload supporting documents (Form 16, Form 26AS)
5. Submit

The rectification is processed within 30-60 days.

What Happens If You Do Not Respond?

If you do not respond within 30 days:

• The demand becomes final
• The department can recover the amount by:
  • Adjusting against future refunds
  • Attaching your bank account
  • Issuing a notice under Section 221 (penalty)

Always respond within 30 days, even if you disagree.

Interest on Demand

If you accept the demand and pay, you must also pay interest:

• Section 234A: 1% per month from the due date of filing to the date of payment
• Section 234B: 1% per month if advance tax was not paid
• Section 220(2): 1% per month from the date of demand to the date of payment

Frequently Asked Questions

Is a 143(1) notice serious?

No. It is an automated intimation, not a scrutiny notice. Most 143(1) notices are resolved by paying a small demand or filing a revised return.

How long does the department have to send a 143(1) intimation?

The department must send the intimation within 9 months from the end of the financial year in which the return was filed. For FY 2025-26 returns filed in July 2026, the intimation must be sent by December 31, 2027.

Can I get a 143(1) notice even if I filed correctly?

Yes. If your employer or bank filed incorrect TDS returns, you may receive a demand notice even though your ITR was correct. In this case, file a rectification request.

What is the difference between 143(1) and 143(2)?

Section 143(1) is automated processing. Section 143(2) is a scrutiny notice — a human officer has selected your return for detailed examination. Section 143(2) is more serious and requires professional assistance.

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