ITR Filing Alert: One Mistake Could Cost You ₹25,000! Key Rules Every Taxpayer Must Know Before Filing

With the income tax return (ITR) filing deadline coming up later this month, both salaried and individual taxpayers should file their returns on time. Even if many taxpayers only pay attention to the deadline, little errors in the filing process can result in penalties, notifications from the Income Tax Department, delayed refunds, and any additional tax liability.

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Tax experts say incorrect reporting of income, claiming ineligible deductions, or not checking the return can lead to unnecessary complications. At times, taxpayers could be forced to pay up to ₹25,000 or more in penalties depending on what is the default.

File Before the Deadline

The deadline to file the Income Tax Return is July 31 for most salaried workers who do not require an audit. Filing before the due date avoids late filing fees, paying interest on unpaid taxes, and unnecessary scrutiny.

Early filing also ensures quicker processing of tax refunds.

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ITR Filing 2026: Top 5 Mistakes That Can Delay Your Income Tax Refund

Common Mistakes That Can Be Costly

The most common error is an incorrect ITR form that is incorrect. When filing the wrong ITR return, the return will be rejected, or taxpayers may have to revise it later.

Another common mistake is failing to report all sources of income. Apart from salary, taxpayers must disclose income earned from:

1. Bank interest
2. Fixed deposits
3. Rental income
4. Capital gains
5. Freelance or consulting work
6. Dividend income
7. Other taxable earnings

If you hide or forget to report income, you may be subject to income tax notices from the Income Tax Department.

Verify Form 16 and AIS

As well as filing your return, taxpayers should review their salary information in Form 16 before they submit it to Form 26AS and AIS.

If the records are not in sync, we are not going to get all the data, and it creates a tax notice.

Claim Deductions Carefully

Many taxpayers claim deductions without verifying eligibility.

Make sure deductions under sections such as:

1. 80C
2. Home loan interest
3. Education loan
4. NPS contributionsThey

are backed by valid documents and are eligible under the Income Tax Act.

If deduction claims are made incorrectly, tax demands may be further added, and penalties may be imposed.

Don't Forget E-Verification

Filing the return alone is not sufficient.

After submitting the ITR, taxpayers need to complete e-verification within the prescribed time. An unverified return is considered invalid, meaning no return was filed at all.

Check Bank Details

Tax refunds are credited directly to the bank account linked to the Income Tax Department.

Ensure that:

1. Bank account details are correct.
2. IFSC code is accurate.
3. PAN is linked to the bank account.
4. The account is pre-validated on the income tax portal.

With inaccurate banking information in place, there is a delay in refund processing.

Understand the Penalty Risks

Depending on the nature of the mistake, taxpayers may face:

1. Late filing fees.
2. Interest on unpaid taxes.
3. Penalties for under-reporting or misreporting income.
4. Additional scrutiny by the Income Tax Department.

In some cases, inaccurate reporting or non-compliance could mean financial repercussions as high as ₹25,000 to ₹30,000 or more, and accuracy is just as important as timely filing.

Final Advice

Taxpayers need to avoid rushing through the filing process as the July 31 deadline is coming. Verify all financial information and income details, pick the right ITR form, and complete e-verification after filing.

A few extra minutes spent reviewing the return can help avoid costly mistakes, penalties, and unnecessary legal complications later.