What Is an Income Tax Notice?

An Income Tax Notice is an official communication issued by the Income Tax Department when there is a mismatch, error, or additional verification required in a taxpayer’s return.
Receiving a notice does not always mean a penalty or wrongdoing—many notices are routine, system-generated, and simply need clarification.

In 2025, the ITD has adopted a more advanced AI-based scrutiny system, making notices more accurate and quicker than before.

 1. Section 143(1) – Intimation Notice

This is the most common notice sent after processing your income tax return.

Why You Receive It

• Mismatch in TDS, income, or deductions

• Incorrect tax calculation

• Arithmetical errors

• Adjustment made by CPC

How to Respond

• Log in to the Income Tax Portal

• Compare your ITR with the intimation details

• Accept or disagree with the adjustment

• File a revised return if needed

This notice is not a scrutiny notice, so there is no need to panic.

 2. Section 139(9) – Defective Return Notice

This notice means your return is incomplete or incorrect.

Common Reasons

• Missing income details

• Incorrect ITR form selected

• Missing balance sheet (for businesses)

• Improper tax calculation

How to Respond

• Download the notice

• Correct the errors mentioned

• File the ITR again as “Revised u/s 139(9)” before the deadline

Ignoring this notice can make your ITR invalid.

 3. Section 143(2) – Scrutiny Notice

This is a detailed assessment notice.

Reasons for Scrutiny

• Mismatch in large financial transactions

• High-value deposits

• High expenses but low reported income

• Random selection by AI system

How to Respond

• Submit all supporting documents on the e-Proceedings portal

• Provide evidence for income, deductions, and investments

• Respond within the specified timeline

This is a serious notice; timely compliance is necessary.

 4. Section 148 – Income Escaped Assessment

This notice is issued when the department believes you have not reported some income.

Examples

• Property sale not disclosed

• Foreign income not declared

• Cash deposits not matching your income

How to Respond

• Request the reasons for reopening

• Submit the required documents

• File return again for the specific year

This is one of the most important notices in 2025 due to increased AIS monitoring.

 5. Section 245 – Adjustment of Refund

This notice is sent when your refund is being adjusted against a previous outstanding tax demand.

How to Respond

• Check the outstanding demand on the IT portal

• Agree or disagree with the demand

• If disagreeing, provide supporting documents

Refund will be released only after clearing discrepancies.

 6. Section 144 – Best Judgment Assessment

If you do not respond to notices, the department will assess your income based on available data.

Reasons

• Non-filing of ITR

• Ignoring earlier notices

• Not providing documents

How to Respond

• File your return immediately

• Provide documents and rectifications

• Request for reassessment if necessary

 7. Section 131 – Summons for Inquiry

This is issued during serious investigation.

How to Respond

• Appear before the officer

• Provide original documents

• Respond truthfully

Non-compliance can lead to penalties.

 8. Section 26(1)—Tax Credit Mismatch Notice

Issued when TDS/TCS claimed doesn’t match the tax department database.

How to Respond:

• Check Form 26AS/AIS

• Match data with your claim

• File a correction request or revise your ITR

 How to Respond Correctly to Any Income Tax Notice (2025 Rules)

1. Stay calm and read the notice carefully

Most notices are routine; they simply require clarification.

2. Check the section mentioned

Identify the type of notice (143(1), 139(9), 148 etc.).

3. Verify the accuracy on the Income Tax Portal

Use AIS, 26AS, and Form 16 for reconciliation.

4. Submit the response within the deadline

Usually 10–30 days depending on notice type.

5. Keep records of all submissions

Maintain soft copies of documents, replies, and acknowledgements.

6. Consult a tax expert for scrutiny or Section 148 notices

Incorrect replies can lead to penalties.

 Why Are More Notices Being Sent in 2025?

Because the Income Tax Department now uses:

• AI-based verification

• PAN–Aadhaar linked data

• Real-time AIS financial tracking

• TDS and high-value transaction monitoring

So compliance mistakes get detected faster.

 Frequently Asked Questions (FAQ)

Q1. Does receiving a notice mean I did something wrong?

Not always. Many notices are auto-generated and only require clarification.

Q2. Can I ignore an income tax notice?

No. Ignoring notices may result in penalties, demands, or best judgment assessments.

Q3. How do I avoid notices in the future?

• File accurate returns

• Match AIS/26AS data

• Report all income sources

• Claim only valid deductions

Conclusion

Income tax notices are common and often routine, but they must be handled correctly. In 2025, the department is more digitally advanced, so even small mismatches can trigger notices. Understanding the type of notice and responding on time can help you avoid penalties and maintain clean tax compliance.