What Is Intimation Under Section 143(1) of The Income Tax Act?

Taxes 16 April 2026
Income Tax Demand Notice 143(1)

Section 143(1) of the Income Tax Act, 1961, provides for the intimation issued by the Income Tax Department.

Moreover, this occurs after the processing of the taxpayer’s Income Tax Return (ITR). Hence, the income tax demand notice 143(1) contains data given in tabular format.

Thus, this tab provides a side-by-side comparison between the data given in the ITR file and the assessment conducted by the Income Tax department.

In this article, we will learn everything about the Income Tax Demand Notice 143(1). Further, we will also learn what you should do when you get served with an Income Tax Demand Notice 143(1). 

What Are The Provisions Related To Intimation Under Section 143(1)? 

What Are The Provisions Related To Intimation Under Section 143(1)

Here is an overview of all the provisions related to the intimation under Section 143(1). 

1. Processing Of The Income Tax Return

The Income Tax department processes the returns. They do it to verify the accurate calculation, claims, and deductions that were made by the taxpayer. 

The Centralised Processing Centre (CPC) of the Income Tax Department mostly does this kind of processing.  

2. Intimation U / S 143(1)

The Income Tax department generally issues an intimation under Section 143(1). Moreover, this happens once the process is completed.  

The department serves this information to the taxpayer. Hence, the department communicates to the taxpayer about the overall result of the processing and computation of tax liability or refund. 

3. Contents Of Intimation

The Income Tax Demand Notice 143(1) contains several pieces of information. Moreover, this includes things like. 

  • Details of income that the taxpayer has declared in their ITR. 
  • Information about the discrepancies and the errors that the AO has identified during the processing.  

Hence, this should include incorrect claims, inconsistencies, and arithmetical errors. 

  • Furthermore, it includes the adjustments made by the income tax department to correct discrepancies and reevaluate tax-related liabilities.  
  • This also includes other details about the tax paid by the taxpayer, such as advance tax, TDS (Tax Deducted at Source), and tax for self-assessment. 
  • The final computation of the taxpayer’s tax refund or liability. 

4. Refund Or Demand

The intimation indicates if there is an additional tax liability (demand). The tintimation also indicates if the taxpayer is eligible to receive a refund.   

Moreover, the taxpayer needs to pay the amount within a specific time period dictated by the Income Tax Demand Notice 143(1). 

5. What Are The Major Options Available To The Tax Payer? 

The taxpayer does not need to take any further action in the process if they agree with the computation and the adjustments made in the intimation.  

However, a taxpayer who disagrees can always challenge the computation or adjustments. Hence, they can file a revised return u /s 139(5).  

They can also request a rectification under Section 154. Moreover, the action has to be taken within the specified time limit. 

6. Response And Communication  

The authorities send the Income Tax Demand Notice 143(1) to the taxpayer’s registered e-mail address. 

Furthermore, the Income Tax department also, at times, sends a physical copy to the postal address.  

Hence, the taxpayer should review the intimation carefully and take the most appropriate action upon receiving an Income Tax Demand Notice 143(1). 

7. How To Find Your Income-Tax Intimation?

Here are the main steps to help you find your Income Tax Intimation.  

  • The user must log in to the income tax website using valid credentials. Moreover, this includes information like (Password and PAN) 
  • Then go to e-file, then navigate to Income Tax Returns, then go to View Field Returns. 
  • Click on the download intimation order. 

8. What Is A Letter of Information u / s 143(1)?

The people use the term assessment for the process of the income tax department examining the return filed by the taxpayer. 

Generally, the IT department carries out a primary assessment of all IT returns filed by the taxpayers.

The Income Tax Department sends an intimation in the form of Income Tax Demand Notice 143(1) during times of internal inconsistencies. 

Additionally, they can also send an Income Tax Demand Notice 143(1) in case of arithmetical errors, issues in the calculation of tax, and verification of discrepancies in payment of tax. 

The Central Processing Centre(CPC) generally handles the preliminary process of evaluation. 

Moreover, the preliminary evaluation process remains completely compromised  

9. Password For Intimation U/S 143 

A password mostly protects the information received under Income Tax Demand Notice 143(1). Hence, you will have to use your PAN number in Lowercase. 

Next to this, add your date of birth in DDMMYYY format. Do not use any space between the given characters. 

What Should We Remember About Income Tax Notices? 

The Income Tax Department generally issues an income tax notice to ensure compliance on the part of the taxpayers. 

Moreover, this does not always mean a legal consequence. Income Tax Demand Notice 143(1) is an intimation.  

On the other hand, section 142(1) of the Income Tax Notice serves as an instrument that allows the department to search for some additional information on the ITRs. 

Frequently Asked Questions

Here are the answers to some of the most commonly asked questions about Income Tax Demand Notice 143(1). 

1. What To Do When You Do Not Receive Your Intimation Under Section 143(1) After The End Of The Specified Period?

The taxpayer should log in to the income tax website using valid credentials and check the status under “View Filed Returns.”  
Hence, the taxpayer should review the intimation carefully and take the most appropriate action upon receiving an Income Tax Demand Notice 143(1).

2. How To Respond To Demand Under Section 143(1)?

The taxpayer needs to pay the amount within a specific time period dictated by the Income Tax Demand Notice 143(1).  
As a result, the taxpayer can challenge the computation or adjustments by filing a revised return u/s 139(5) or requesting a rectification under Section 154.  

3. How To Claim TDS Credit?

The Income Tax Demand Notice 143(1) includes details about the tax paid by the taxpayer, such as TDS (Tax Deducted at Source).  
The Income Tax Department processes the returns to verify the accurate calculation, claims, and deductions made by the taxpayer.  

4. How Much TDS Is Tax Free?

The Income Tax Department processes the returns to verify the accurate calculation, claims, and deductions made by the taxpayer.  
The final computation of the taxpayer’s tax refund or liability determines the applicable tax after considering TDS.

Additional Reading:

Barsha Bhattacharya

Bhattacharya is a senior content writing executive. As a marketing enthusiast and professional for the past 4 years, writing is new to Barsha. And she is loving every bit of it. Her niches are marketing, lifestyle, wellness, travel and entertainment. Apart from writing, Barsha loves to travel, binge-watch, research conspiracy theories, Instagram and overthink.

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