Synopsis: 7 Common everyday mistakes that can trigger Income Tax notices in India such as neglecting to report all income sources (like interest or side jobs), mismatching data with the AIS, high-value cash transactions, and failing to disclose foreign assets are explained in this article.
Many people believe income tax notices are only for big earners or businesses, but in today’s data-linked system, even small mistakes can trigger one. This article walks you through 7 common situations–from unreported income to unexplained gifts and high-value transactions–that can lead to an income tax notice for the average taxpayer.
1. Not reporting or under-disclosing all income
Rahul is a software engineer who works part-time as a freelance tutor. He shows only his salary in his ITR but forgets to include the ₹1.8 lakh he earned from online coaching. The bank reports his interest income and transactions, and the department’s system flags a mismatch. A few months later, Rahul receives an income tax notice asking him to explain the missing income and pay the extra tax plus interest.
2. High-value transactions not explained in ITR
Priya suddenly deposits ₹12 lakh in cash into her savings account over two months to buy a car on loan. Her declared income is only ₹6 lakh a year and she does not show any capital-gain or business income. The bank sends this to the tax department, which notices she cannot justify such a large transaction. Priya gets a scrutiny notice asking her to prove the source of that money.
3. Large or unexplained gifts received (cash / bank)
Arvind’s friend, who runs a business, transfers ₹4.5 lakh to his bank account as a “help during a rough patch.” Arvind mentions nothing in his ITR, assuming it is just a friendly gesture. Gifts from non-relatives exceeding ₹50,000 annually are taxable under Section 56(2)(x) as “Income from Other Sources” . This huge credit can be viewed as unexplained income by IT department. Arvind is given a 142(1) notice inquiring why he did not disclose this amount.
4. Sending or receiving unusual money transfers
Meena regularly sends ₹4 lakh a year to her cousin abroad under “family support,” using different bank accounts and smaller amounts. The department observes recurrent transfers which appear more like a business theme and wonders why she is remitting so much money. Meena receives a notice requesting her proof of source of funds and that it is not a disguised business income.
Also read: Top 10 Income Sources That Are Completely Tax-Free in India (2026)
5. Making false or exaggerated deductions/losses
Vikas operates a small shop and prepares ITR-3 but shows a loss on a yearly basis by recording higher expenses than his actual bills. He states ₹1.5 lakh in HRA, too, without receipts of rent. The department cross-checks his GST-linked sales and bank credits. A notice arrives asking him to submit real rent agreements and bills; otherwise, his losses are disallowed and he must pay tax with penalties.
6. Mismatch in TDS / TCS credits or tax payment
Kavita’s employer deducts TDS correctly, but in her ITR she types the wrong assessment year for one challan. Her Form 26AS shows ₹1.2 lakh of TDS, but her return shows only ₹1 lakh. The system detects this gap and sends her a defective-return notice (139(9)) of the Income Tax Act, which is triggered when the tax department finds inconsistencies between the ITR filed and their records (Form 26AS/AIS). The gap of ₹20,000 is considered a defect, and she must respond within 15 days.
7. Not filing ITR when liable, or using wrong ITR form
Deepak earns only ₹4.5 lakh from salary, so he thinks he does not need to file an ITR. However, he also earns ₹1.2 lakh from selling mutual funds and another ₹80,000 from bank interest. The department’s data shows that combined income and notices he has not filed. Deepak receives a reminder notice asking him to file the correct ITR form and regularize his return.
Conclusion
The modern automated tax system has turned a single minor mistake into income tax notices within a short period of time. Reporting every income properly, explaining big transactions, and ensuring that your ITR is in-line with your bank and TDS information can ensure that you do not look like you are evading scrutiny that might otherwise provoke unwarranted attention.
Written By Jayanth R Pai
