
Five ITR filing mistakes that trigger tax notices: relying only on Form 16, skipping AIS reconciliation, picking the wrong form, missing deductions or capital gains, and failing to e-verify.
The July 31 deadline for filing income tax returns for Assessment Year 2026-27 is weeks away, and taxpayers are beginning to submit. Pre-filled forms have cut the data-entry work, but errors in a rush still lead to refund delays, fresh tax demands, or a notice from the Income Tax Department.
The department has repeatedly told filers to cross-check the information in Form 26AS, the Annual Information Statement and the Taxpayer Information Summary before clicking submit. Here are the five mistakes that surface most often.
1. Relying only on Form 16
Form 16 shows only the salary income your employer reported. It does not capture interest from savings accounts or fixed deposits, dividend income, rental income, freelance earnings, or capital gains from shares and mutual funds. Every one of those must be added to the return. Leaving them out creates a mismatch with the department's own records, which banks, mutual funds, stockbrokers and other entities feed directly into the AIS. That mismatch triggers a notice.
2. Skipping the AIS and Form 26AS reconciliation
Before filing, compare the income you report with what appears in the AIS, TIS and Form 26AS. Those statements already contain data from employers, banks, mutual funds and brokers. If your return omits income that those records show, the department's system flags the discrepancy. The result is either a demand for additional tax or a scrutiny notice.
3. Picking the wrong ITR form
Selecting an incorrect form makes the return defective or slows its processing. ITR-1, for example, is not available to taxpayers who have capital gains, foreign assets, or more than one house property. Those filers need ITR-2 or another applicable form. Check the eligibility conditions for each form before you begin.
4. Claiming deductions without meeting conditions, or missing capital gains
Deductions under Sections 80C, 80D and other provisions have specific eligibility rules. Claiming them without meeting those rules is a common error. Separately, capital gains from shares, mutual funds or property transactions must be disclosed even if the holding period was long enough to make the gain tax-exempt. The disclosure is required for the record; skipping it creates a mismatch with the broker data in the AIS.
5. Filing without e-verification
Submitting the ITR is not the final step. The return must be e-verified within the prescribed time. An unverified return is treated as invalid – legally, it is as if you never filed. If you catch an error before you verify, you can discard the unverified return and file a fresh one, subject to the timelines.
With the deadline approaching, the temptation is to submit quickly and move on. Spending the extra minutes to reconcile income details, choose the correct form, verify deductions and complete the e-verification step can prevent a refund delay or a notice that takes months to resolve.
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