Reasons for Income Tax Notice: Common Causes & How to Respond | Angel One

6 min readUpdated on 10th Jun, 2026by Angel One
An income tax notice is usually issued due to mismatches, delayed filing, incorrect deductions, or unreported income. Timely response and accurate reporting help avoid penalties.
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Receiving an income tax notice can feel stressful at first, but in many cases, it is simply a request for clarification or verification from the Income Tax Department. A mismatch in TDS details, unreported income, high-value transactions, or errors in the ITR can all trigger such notices. 

Understanding why these notices are issued and knowing the proper way to respond can help taxpayers avoid penalties, resolve issues more quickly, and maintain proper compliance with the Income Tax Act. 

Key Takeaways 

  • Mismatch in AIS, Form 26AS, TDS, or reported income is one of the most common reasons for receiving an income tax notice. 

  • High-value transactions, delayed ITR filing, and incorrect deduction of claims can also trigger scrutiny or verification. 

  • Taxpayers should carefully verify financial records and respond to notices within the prescribed timeline. 

  • Proper disclosure, accurate ITR filing, and supporting documents can help reduce compliance issues and penalties. 

What is an Income Tax Notice? 

An income tax notice is an official communication from the Income Tax Department that requires clarification, additional information, or corrective action from a taxpayer.  

An income tax notice may be issued for several reasons, such as a mismatch in TDS details, incorrect income reporting, non-filing of ITR, high-value transactions, or errors found during the processing of the return. The notice usually mentions the relevant section of the Income Tax Act, the reason for issuance, and the response or documents required from the taxpayer within the specified timeline. 

Common Reasons for Income Tax Notice

Below are the most common reasons for receiving an income tax notice. In most cases, these notices are generated when the Income Tax Department detects mismatches between your ITR, AIS, Form 26AS, bank records, or other financial information linked to your PAN. 

  1. Incorrect reporting of income or assets

If income from bank interest, rent, capital gains, or freelance work is missed while filing the ITR, the department may issue a notice seeking clarification or revised details. 

  1. Mismatch between actual and declared income

When the income reported on the return does not match the AIS or TDS records, taxpayers may receive a notice asking them to explain the discrepancy with supporting documents. 

  1. High-value transactions

Large cash deposits, property purchases, high credit card payments, mutual fund investments, or other specified transactions reported under the Statement of Financial Transactions (SFT) may trigger verification if the source of funds is not properly disclosed. 

  1. TDS mismatch or incorrect claims

If the TDS claimed in the ITR differs from Form 26AS or AIS records, the department may issue an income tax notice for correction or clarification. 

  1. Scrutiny or risk-based assessment 

Some returns are selected for limited scrutiny to verify deductions, exemptions, or reported income. 

  1. Delayed or defective ITR filing

Late filing or incomplete return details under Section 139(9) can also lead to notices from the department. 

  1. Refund adjustment against old tax dues 

Tax refunds may be adjusted against pending demands from earlier assessment years. 

  1. Reassessment proceedings (Sections 148 & 148A) 

If the Income Tax Department believes that income has escaped assessment, it must first follow the procedure under Section 148A, which includes providing an opportunity to be heard. After this process, a notice under Section 148 may be issued for reassessment. 

Types of Income Tax Notice

The Income Tax Department issues different types of income tax notices depending on the nature of the discrepancy, verification, or action required from the taxpayer. Understanding these notices can help taxpayers respond correctly and avoid unnecessary penalties or delays. 

Section 

Purpose of Notice 

Section 139(9) 

Issued for defective or incomplete ITR filing 

Section 139(1)  

Issued to taxpayers who have not filed their Income Tax Return despite having taxable income or high-value transactions 

Section 142(1) 

Sent when additional documents or information are required 

Section 143(1) 

Intimation after preliminary processing of the return 

Section 143(2) 

Issued for scrutiny assessment and detailed verification 

Section 143(1)(a) 

Intimation of proposed adjustments during return processing due to mismatches 

Section 148 

Issued when income is believed to have escaped assessment 

Section 156 

Demand notice for pending tax, interest, or penalty 

Section 245 

Intimation for the adjustment of the refund against old tax dues 

Different notices require different responses, making it important to carefully read the section mentioned before taking action. 

Mismatch Between Reported Income and Form 26AS/AIS 

One of the most common reasons for receiving an income tax notice is a mismatch between the income reported in the ITR and the details available in Form 26AS or AIS. The Income Tax Department automatically compares these records during return processing. 

  • Salary income reported in the ITR may differ from Form 16 or TDS records uploaded by the employer. 

  • Interest earned from savings accounts or fixed deposits may appear in AIS but remain unreported in the return. 

  • Dividend income from shares or mutual funds is often missed while filing the ITR. 

  • Capital gains from shares, mutual funds, or property sales may not match broker or registrar data available with the department. 

  • Incorrect TDS claims or duplicate entries can also trigger verification notices. 

To avoid such issues, taxpayers should carefully verify AIS, Form 26AS, and supporting financial documents before filing the return. Accurate reporting helps reduce the chances of receiving an income tax notice later. 

Things To Do After Receiving an Income Tax Notice 

Receiving an income tax notice does not always mean there is a serious violation. However, ignoring the notice or missing response deadlines can lead to penalties, scrutiny, or additional tax demands. Here are some important steps taxpayers should follow: 

  1. Read the notice carefully: Check the section mentioned in the notice, understand the reason for issuance, and note the deadline for submitting the response. 

  1. Verify all tax and income details: Compare the notice details with your ITR, AIS, Form 26AS, salary slips, bank statements, and other financial records. 

  1. Correct errors without delay: If the notice relates to delayed filing, defective returns, or incorrect reporting, file a revised return under Section 139(5) or an updated return under Section 139(8A), as applicable, within the prescribed timelines. 

  1. Submit a proper response online: Upload accurate documents and respond clearly through the income tax portal to avoid additional scrutiny or penalties later. 

How to Check and Respond to an Income Tax Notice

Taxpayers can easily check and learn how to respond to income tax notices online through the official income tax portal. Responding within the specified timeline is important to avoid penalties or further scrutiny. 

  • Log in to the income tax e-filing portal using your PAN, password, and captcha credentials. 

  • Go to the “Pending Actions” or “e-Proceedings” section to view the issued notice and related details. 

  • Carefully read the notice number, section, response deadline, and documents requested by the department. 

  • Compare the notice details with your ITR, AIS, Form 26AS, salary records, and bank statements before replying. 

  • Upload supporting documents and submit a clear response online if clarification or correction is required. 

  • Download and save the acknowledgement receipt after successful submission for future reference. 

A timely and accurate response can help resolve most income tax notice issues smoothly without additional complications. 

What Happens If You Ignore an Income Tax Notice?

Ignoring an income tax notice can lead to serious financial and legal consequences. The Income Tax Department may treat non-response as non-compliance, especially if the notice relates to undisclosed income, defective returns, or pending tax demands. 

Failure to respond within the prescribed timeline can result in penalties, additional interest on unpaid taxes, or adjustment of pending refunds against outstanding dues. In scrutiny-related cases, the department may proceed with assessment based on available records, which can increase the tax liability. 

Repeated non-compliance may also trigger detailed scrutiny, reassessment proceedings under relevant sections of the Income Tax Act, or further verification of financial transactions. In certain situations, legal action or prosecution may also be initiated for willful tax evasion. 

Responding promptly with accurate documents and explanations is the best way to avoid unnecessary complications and resolve notice-related issues efficiently. 

Tips to Avoid Income Tax Notices 

Avoiding an income tax notice largely depends on accurate reporting, timely filing, and proper verification of financial records before submitting the ITR. A few careful steps can significantly reduce compliance issues. 

  • Match your ITR details with AIS, Form 26AS, and Form 16 before filing. 

  • Report all income sources, including bank interest, dividends, rental income, and capital gains. 

  • Avoid claiming deductions or exemptions without proper supporting documents. 

  • Disclose high-value transactions and maintain proof of the source of funds. 

  • Verify TDS entries carefully to avoid mismatch-related notices. 

  • Keep salary slips, bank statements, investment proofs, and tax records safely for future verification. 

Accurate disclosure and proper documentation can help taxpayers minimise the chances of receiving an income tax notice later. 

Conclusion  

Receiving an income tax notice is often a routine request for clarification of discrepancies such as income mismatches, high-value transactions, or filing errors, rather than an immediate cause for alarm. Ultimately, the best approach to managing these notices is to maintain transparent financial records, respond promptly through the official e-filing portal, and adhere to filing deadlines to avoid unnecessary penalties and legal complications.  

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FAQs

You may receive an income tax notice due to mismatches in TDS details, unreported income, high-value transactions, delayed ITR filing, or incorrect deductions claimed in the return. 

Yes, claiming deductions or exemptions without proper proof can trigger verification or scrutiny from the Income Tax Department during return processing. 

Yes, if the income or TDS details reported in your ITR do not match Form 26AS or AIS records, the department may issue a notice for clarification. 

No, many notices are routine communications seeking clarification, correction, or supporting documents. Most issues can be resolved through timely responses. 

Taxpayers with mismatched income details, large financial transactions, delayed filing, or incorrect claims generally face a higher chance of receiving notices

Yes, ignoring notices can result in penalties, interest, scrutiny proceedings, refund adjustments, or further legal action under the Income Tax Act. 

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