Income Tax Notices: Types, Reasons & How to Respond in 2026 Manthan Experts March 10, 2026 Blog, Income Tax Consultancy, ITR e-Filing Introduction In India, the Income Tax Department sends various types of notices to taxpayers for different reasons, ranging from routine information requests to serious tax discrepancies. Receiving an Income Tax notice can often cause panic, but not all notices are issued due to default or mistakes. These notices can be for simple verification, assessment of your income, or reminders for non-compliance. Understanding the nature of the notice, its purpose, and how to respond is crucial to avoid legal complications and ensure smooth communication with the tax authorities. This guide will help you understand different types of Income Tax notices, why they are issued, and the appropriate actions to take upon receiving them. Here are the main types of income tax notices, along with the relevant sections and reasons: Section 139(9) – Defective Return Notice The Income Tax Department issues a Section 139(9) notice when a filed Income Tax Return (ITR) is considered defective or incomplete due to missing or incorrect information. This notice allows taxpayers to rectify the defects within a specified time to avoid rejection of the return. Reasons for Receiving Section 139(9) Defective Return Notice A return is considered defective if: Mandatory details like PAN, income details, or tax payments are missing Mismatch between declared income and tax payments Incomplete return filing without submitting essential schedules Filing ITR-1 or ITR-4 despite having income not allowed under these forms Claimed deductions without providing income details Not attaching audit reports (if applicable) Errors in TDS or advance tax claims Incorrect bank details for refund Action: The taxpayer must rectify the defect within a specified time frame. Time Limit to Respond You need to respond to the defective return notice within 15 days from the date of receiving the notice. However, the Assessing Officer may grant an extension if requested. What Happens If You Don’t Respond? If you fail to rectify the defect within the given time, your ITR will be treated as invalid, meaning it will be considered as if you never filed it. This can result in: Loss of tax refunds Late filing penalties Interest under Section 234A, 234B, and 234 Section 143(1) – Intimation Notice The Section 143(1) Intimation Notice is one of the most common notices issued by the Income Tax Department after processing your Income Tax Return (ITR). This notice is not always a cause for concern but serves as a communication regarding the preliminary assessment of your return. It informs you whether your return has been accepted as it is, or if there are any discrepancies in the tax calculation. Reason for Receiving Section 143(1) Intimation Notice The notice is issued after the Income Tax Department automatically processes your return through its Centralized Processing Centre (CPC). The reasons for this notice can be: Confirmation that the return is accepted without any discrepancies Mismatch between the income declared by the taxpayer and the department’s calculation Error in claiming deductions or exemptions Discrepancy in TDS or Advance Tax payments Excess or shortfall of tax payments Mathematical errors or incorrect reporting of income Action: Review the Notice Download and carefully review the notice. Check the comparison between the department’s calculation and your return. Choose the Correct Response If you agree with the demand, pay the outstanding tax amount online. If you disagree, file a Rectification Request under Section 154 by providing supporting documents. Time Limit to Respond You must respond to the notice within 30 days from the date of receiving the intimation. If no response is submitted, the department assumes you agree with the demand and initiates recovery proceedings What Happens If You Ignore the Notice? Missing the deadline may lead to: Automatic adjustment of refund (if any) against the demand Penalty and interest on the pending tax amount Legal action or tax recovery proceedings Section 142(1) – Notice for Filing Income Tax Return The Section 142(1) Notice is issued by the Income Tax Department to taxpayers to ensure timely filing of Income Tax Returns (ITR) or to gather additional information for an ongoing assessment. This notice is typically sent when the taxpayer has either not filed their return or if further details are required to complete the assessment process. It is important to respond to this notice promptly to avoid legal consequences. Reason for Receiving Section 142(1) Notice The Income Tax Officer can issue a Section 142(1) Notice under the following circumstances: Non-Filing of ITR: When a taxpayer has not filed their ITR within the due date, despite having taxable income. Preliminary Inquiry Before Assessment: If the department requires additional information, documents, or explanations to verify the details in the return already filed. Mismatch in Reported Income: When the department suspects under-reporting of income or non-disclosure of certain income sources. High-Value Transactions: If the taxpayer is involved in high-value transactions (such as property purchase, large cash deposits, or investments) without filing an ITR. What Action Should You Take? Download and Read the Notice Carefully Understand the exact reason mentioned in the notice and the details requested by the Assessing Officer. File the Income Tax Return (if not filed) If the notice is for non-filing of ITR, immediately file your return along with the late fee and interest applicable under Section 234F and Section 234A/B/C. Submit Information (if requested) If the notice requires additional documents (like bank statements, property purchase deeds, or expense details), upload scanned copies of the required documents online. Time Limit to Respond The response to the Section 142(1) notice must be submitted within the time specified in the notice (usually 15 to 30 days). If more time is needed, the taxpayer can request an extension from the Assessing Officer. What Happens If You Ignore the Notice? Ignoring the notice can result in: Best Judgment Assessment under Section 144 Penalties under Section 271(1)(b) (₹10,000 for each failure) Prosecution under Section 276CC (if taxable income exceeds ₹25 lakh) Section 143(2) – Scrutiny… Continue reading Income Tax Notices: Types, Reasons & How to Respond in 2026